New Building Materials & Construction World, Vol 33, No 9, 2020
As the pace of road construction keeps on increasing, huge quantities of such conventional road c... more As the pace of road construction keeps on increasing, huge quantities of such conventional road construction materials are being consumed, resulting in further depletion of conventional construction materials. It is necessary to use locally available or marginal materials for road works to reduce construction cost and to address environmental concerns in an effective manner. Various guidelines and specifications for road works issued by Indian Roads Congress (IRC) contain many provisions for using industrial wastes in road works. This paper attempts to make a review of such IRC Guidelines/ Specifications.
Getting good quality road construction aggregates in Himalayan region is a challenge since quarry... more Getting good quality road construction aggregates in Himalayan region is a challenge since quarrying is prohibited in view of fragile environmental conditions. Road construction in hilly areas often entails construction of tunnels. The muck excavated after the tunnel excavation comprises of powdered rock, stone fragments and some amount of soil. A study was carried out for laboratory characterisation of tunnel excavation muck to explore the possibility of using it as a road construction material, highlights of which are presented in this paper.
Other District Roads and Village roads combined together are known as 'Rural Roads'. This paper p... more Other District Roads and Village roads combined together are known as 'Rural Roads'. This paper presents an appraisal of quality of road building materials used and construction quality achieved for some of the rural roads, through technical inspections undertaken by CRRI. This work was carried out on 41 rural roads spread across three states
The Himalayas situated along India's northern border rise to considerable heights. While the lowe... more The Himalayas situated along India's northern border rise to considerable heights. While the lower reaches of these mountains experience intense rains, in the higher altitudes heavy snowfall is common. Areas experiencing snowfall can be grouped into two categories: (i) Areas having altitudes between 2500 m to 3000 m where snowfall is not heavy and snow clearance operations are relatively easy (ii) High altitude areas above 3000 m where intensity and periodicity of snowfall is more, and avalanches, frost, blizzards and icing are also encountered Due to the high availability of water from rains and snow in the Himalayan region, many of India's perennial rivers originate here. On the flip side, large amount of moisture in subsoil leads to slope instability and road pavement distress. Pavement performance in the region is affected by freezing and thawing, thermal stresses induced by temperature variations, and Road Pavement Design in Frost Prone Areas High altitude areas which are subjected to heavy snowfall and frost action necessitate special consideration for design and construction of pavements.
Road transport is the most prevalent mode of transport in our country. However, large sections of... more Road transport is the most prevalent mode of transport in our country. However, large sections of our roads still suffer from congestion, inadequate pavement thickness and road safety hazards. Significant segments of population in hilly and tribal areas do not have all weather road accessibility. CSIR-Central Road Research Institute (CRRI), New Delhi has a crucial role to play in the road development programmes being undertaken by the government. Over the years, CRRI has developed many new techniques and solutions to problems affecting road sector. Notable achievements include urban road traffic and air pollution study, techniques for usage of waste materials, safety audits for various sections of national highways, traffic and transportation studies of metropolitan cities, bridge design and rating, providing solutions to premature pavement failures across the country, ground improvement, landslide problem mitigation, etc. The present article provides a glimpse of activities of CRRI and summarizes significant achievements during 2013-14.
This paper describes a simple systematic procedure, which is being adopted in India for the overl... more This paper describes a simple systematic procedure, which is being adopted in India for the overlay design of rigid pavements. The basic criteria of overlay design should prevent the flexural stresses, induced in the surfacing layer and the existing pavement, from exceeding the corresponding flexural strength of concrete. The design of overlay for airfields and roads is specified, and a computer program for the evaluation of their rigid pavements is also being prepared. For the evaluation of rigid airfield pavements, the ACN-PCN method is being adopted, and the local classification number (LCN), defining the load of an aircraft, is also used sometimes. Indian Roads Congress Special Publication No. 17 presents recommendations about overlays on cement concrete pavements, especially for roads. The paper gives its specifications or formulae for: (1) traffic; (2) condition of existing pavement; (3) partially bonded overlay; (4) unbonded overlay; and (5) fully bonded overlay. As far as possible, existing cement concrete pavements, requiring strengthening, should be overlaid at the first sign of distress, while the slab is still only slightly cracked.
The portland cement used for construction of rigid pavements is an energy intensive material and ... more The portland cement used for construction of rigid pavements is an energy intensive material and hence efforts are being made to find substitute materials for partial replacement of cement in concrete, and conserve energy. On the other hand, utilisation of coal for generation of power is increasing rapidly. This has resulted in production of large quantities of fly ash from coal burning power plants. Fly ash from thermal power plants can be used as an admixture to concrete for saving cement as well as to provide solutions for its disposal problems. Use of fly ash in concrete would be an environmentally friendly way of utilising a waste material like fly ash. Currently fly ash finds application in road pavement structure, mainly for sub-base /base course and embankment. Fly ash admixed concrete can be a very good material for construction of pavement. It is generally designed as a partial replacement of cement or aggregate or both. This paper describes the different methods of using fly ash in concrete as a paving material, advantages gained by using fly ash in concrete and mechanism of durability increase in fly ash admixed concrete. The experiences of CRRI for using fly ash admixed concrete are also highlighted.
The paper reports results of laboratory and semi-field investigations, for evaluating various imp... more The paper reports results of laboratory and semi-field investigations, for evaluating various important properties of lime-granulated blast furnace slag (GBFS) concrete of different mix proportions, for construction of both semi-rigid and rigid pavements. The paper also highlights the types of reaction products formed and techno-economic aspects of the material. Concrete specimens with different mix proportions were subjected to a battery of tests to ascertain: workability; long term compressive strength and flexural strength; drying shrinkage, tensile and shear strength; Poisson's Ratio, and durability. The reaction products formed during the reaction of lime- GBFS binder were identified by x-ray diffraction (XRD), differential thermal analysis (DTA) and infra red analysis (IR) methods. Studies were also carried out using the loading frame in the heavy test bed area. Pavement slabs were constructed using: (a) lime-GBFS concrete as the base course material; (b) lime-GBFS as the wearing course material. Both the slabs were subjected to plate load tests to ascertain their deflection characteristics and load bearing capacity. The results of these tests are presented.
Road transport is the most prevalent mode of transport in our country. However, large sections of... more Road transport is the most prevalent mode of transport in our country. However, large sections of our roads still suffer from congestion, inadequate pavement thickness and road safety hazards. Significant segments of population in hilly and tribal areas do not have all weather road accessibility. CSIR-Central Road Research Institute (CRRI), New Delhi has a crucial role to play in the road development programmes being undertaken by the government. Over the years, CRRI has developed many new techniques and solutions to problems affecting road sector. Notable achievements include urban road traffic and air pollution study, techniques for usage of waste materials, safety audits for various sections of national highways, traffic and transportation studies of metropolitan cities, bridge design and rating, providing solutions to premature pavement failures across the country, ground improvement, landslide problem mitigation, etc. The present article provides a glimpse of activities of CRRI...
The behavior of stone columns in soft marine clay under a cement concrete road pavement was exami... more The behavior of stone columns in soft marine clay under a cement concrete road pavement was examined through PLAXIS 2D. It is a well-known fact that modeling in 2D will require less computational effort compared to a full 3D analysis. The main difficulty with regard to PLAXIS 2D modeling of stone columns is the conversion of the stone column grid to a 2D stone trench structure. Different approaches (enhanced soil parameter, embedded beam element and equivalent column method) are available in modeling of stone column in PLAXIS 2D. However, not much literature is available for choosing the proper approach in PLAXIS 2D modeling of stone column in soft marine clay. The aim of this paper is to establish the suitable approach which provides better results with minimal effort for modeling in PLAXIS 2D. A case study, of work carried out at Mumbai for the road pavement between Wadala Depot and Chembur, provides the basis for PLAXIS 2D modeling. The sub-soil profile in this stretch comprises ...
Use of construction and demolition (C&D) waste aggregates in road works is a widely accepted prac... more Use of construction and demolition (C&D) waste aggregates in road works is a widely accepted practice in many countries, such as Denmark, USA, UK, France, Japan, etc. But unfortunately, its usage for road construction is negligible in India. Delhi City produces about 3000 tonnes of construction and demolition waste every day. Re-utilisation or recycling is an important strategy for management of such waste. Recycling of aggregate material from construction and demolition waste can help to reduce the demand-supply gap for aggregates, conserve depleting sources of good quality stone aggregates, and decrease environmental degradation due to quarrying activities. To evolve more avenues for utilisation of C&D waste in the area of road construction, Central Road Research Institute (CSIR), New Delhi carried out a 'Feasibility Study on Use of Construction & Demolition (C&D) Waste in Road Works.' In this study a detailed laboratory investigation was done on C&D samples collected from...
This paper describes a simple systematic procedure, which is being adopted in India for the overl... more This paper describes a simple systematic procedure, which is being adopted in India for the overlay design of rigid pavements. The basic criteria of overlay design should prevent the flexural stresses, induced in the surfacing layer and the existing pavement, from exceeding the corresponding flexural strength of concrete. The design of overlay for airfields and roads is specified, and a computer program for the evaluation of their rigid pavements is also being prepared. For the evaluation of rigid airfield pavements, the ACN-PCN method is being adopted, and the local classification number (LCN), defining the load of an aircraft, is also used sometimes. Indian Roads Congress Special Publication No. 17 presents recommendations about overlays on cement concrete pavements, especially for roads. The paper gives its specifications or formulae for: (1) traffic; (2) condition of existing pavement; (3) partially bonded overlay; (4) unbonded overlay; and (5) fully bonded overlay. As far as po...
The paper reports results of laboratory and semi-field investigations, for evaluating various imp... more The paper reports results of laboratory and semi-field investigations, for evaluating various important properties of lime-granulated blast furnace slag (GBFS) concrete of different mix proportions, for construction of both semi-rigid and rigid pavements. The paper also highlights the types of reaction products formed and techno-economic aspects of the material. Concrete specimens with different mix proportions were subjected to a battery of tests to ascertain: workability; long term compressive strength and flexural strength; drying shrinkage, tensile and shear strength; Poisson's Ratio, and durability. The reaction products formed during the reaction of lime- GBFS binder were identified by x-ray diffraction (XRD), differential thermal analysis (DTA) and infra red analysis (IR) methods. Studies were also carried out using the loading frame in the heavy test bed area. Pavement slabs were constructed using: (a) lime-GBFS concrete as the base course material; (b) lime-GBFS as the ...
The portland cement used for construction of rigid pavements is an energy intensive material and ... more The portland cement used for construction of rigid pavements is an energy intensive material and hence efforts are being made to find substitute materials for partial replacement of cement in concrete, and conserve energy. On the other hand, utilisation of coal for generation of power is increasing rapidly. This has resulted in production of large quantities of fly ash from coal burning power plants. Fly ash from thermal power plants can be used as an admixture to concrete for saving cement as well as to provide solutions for its disposal problems. Use of fly ash in concrete would be an environmentally friendly way of utilising a waste material like fly ash. Currently fly ash finds application in road pavement structure,mainly for sub-base /base course and embankment. Fly ash admixed concrete can be a very good material for construction of pavement. It is generally designed as a partial replacement of cement or aggregate or both. This paper describes the different methods of using f...
The NH-39 in the stretch between km 162.00 in Nagaland and km 236.1 in Manipur experiences freque... more The NH-39 in the stretch between km 162.00 in Nagaland and km 236.1 in Manipur experiences frequent landslides at different locations which cause disruption to the traffic and damages to the road infra structures and agricultural land. One of the severely affected locations on NH - 39 at km 221 in the Manipur state, experienced unprecedented subsidence and landslide phenomenon in 2008. This failure has been classified as a compound landslide. Multi-directional tension cracks are observed all over the landslide area. The soil has high clay content as verified by shrinking and swelling observed in the field. About 7m high gabion wall constructed earlier have sunk and distorted. Another old gabion retaining wall down below, has also been broken and moved. Slope stability Analysis was carried out by GEO 4 software. The paper highlights the outcome of the study along with design of suitable remedial measures for its prevention based on the field and laboratory investigations. .
The advent of geosynthetics has dramatically transformed the practice of geotechnical engineering... more The advent of geosynthetics has dramatically transformed the practice of geotechnical engineering around the world. Boom in road infrastructure development in our country has led to enhanced demand for cost effective new construction materials like geosynthetics. During last decade geosynthetic materials has been used in numerous ways as reinforcement in road infrastructure. This paper discuss the potential application of geosynthetic materials specially geogrid and geotextile form the perspective of reinforcement in bituminous pavement and associated road infrastructure. Expected benefits in terms of improvement in service life, reduction in overall thickness and ease of construction in difficult areas are discussed in detail. Utilization of geosynthetic materials for subgrade stabilization, as base reinforcement and overlay reinforcement with stress absorbing interlayer are discussed in detail. This paper also presents few case studies, involving pioneering use of geosynthetic materials enumerating design and construction approach with their success stories.
New Building Materials & Construction World, Vol 33, No 9, 2020
As the pace of road construction keeps on increasing, huge quantities of such conventional road c... more As the pace of road construction keeps on increasing, huge quantities of such conventional road construction materials are being consumed, resulting in further depletion of conventional construction materials. It is necessary to use locally available or marginal materials for road works to reduce construction cost and to address environmental concerns in an effective manner. Various guidelines and specifications for road works issued by Indian Roads Congress (IRC) contain many provisions for using industrial wastes in road works. This paper attempts to make a review of such IRC Guidelines/ Specifications.
Getting good quality road construction aggregates in Himalayan region is a challenge since quarry... more Getting good quality road construction aggregates in Himalayan region is a challenge since quarrying is prohibited in view of fragile environmental conditions. Road construction in hilly areas often entails construction of tunnels. The muck excavated after the tunnel excavation comprises of powdered rock, stone fragments and some amount of soil. A study was carried out for laboratory characterisation of tunnel excavation muck to explore the possibility of using it as a road construction material, highlights of which are presented in this paper.
Other District Roads and Village roads combined together are known as 'Rural Roads'. This paper p... more Other District Roads and Village roads combined together are known as 'Rural Roads'. This paper presents an appraisal of quality of road building materials used and construction quality achieved for some of the rural roads, through technical inspections undertaken by CRRI. This work was carried out on 41 rural roads spread across three states
The Himalayas situated along India's northern border rise to considerable heights. While the lowe... more The Himalayas situated along India's northern border rise to considerable heights. While the lower reaches of these mountains experience intense rains, in the higher altitudes heavy snowfall is common. Areas experiencing snowfall can be grouped into two categories: (i) Areas having altitudes between 2500 m to 3000 m where snowfall is not heavy and snow clearance operations are relatively easy (ii) High altitude areas above 3000 m where intensity and periodicity of snowfall is more, and avalanches, frost, blizzards and icing are also encountered Due to the high availability of water from rains and snow in the Himalayan region, many of India's perennial rivers originate here. On the flip side, large amount of moisture in subsoil leads to slope instability and road pavement distress. Pavement performance in the region is affected by freezing and thawing, thermal stresses induced by temperature variations, and Road Pavement Design in Frost Prone Areas High altitude areas which are subjected to heavy snowfall and frost action necessitate special consideration for design and construction of pavements.
Road transport is the most prevalent mode of transport in our country. However, large sections of... more Road transport is the most prevalent mode of transport in our country. However, large sections of our roads still suffer from congestion, inadequate pavement thickness and road safety hazards. Significant segments of population in hilly and tribal areas do not have all weather road accessibility. CSIR-Central Road Research Institute (CRRI), New Delhi has a crucial role to play in the road development programmes being undertaken by the government. Over the years, CRRI has developed many new techniques and solutions to problems affecting road sector. Notable achievements include urban road traffic and air pollution study, techniques for usage of waste materials, safety audits for various sections of national highways, traffic and transportation studies of metropolitan cities, bridge design and rating, providing solutions to premature pavement failures across the country, ground improvement, landslide problem mitigation, etc. The present article provides a glimpse of activities of CRRI and summarizes significant achievements during 2013-14.
This paper describes a simple systematic procedure, which is being adopted in India for the overl... more This paper describes a simple systematic procedure, which is being adopted in India for the overlay design of rigid pavements. The basic criteria of overlay design should prevent the flexural stresses, induced in the surfacing layer and the existing pavement, from exceeding the corresponding flexural strength of concrete. The design of overlay for airfields and roads is specified, and a computer program for the evaluation of their rigid pavements is also being prepared. For the evaluation of rigid airfield pavements, the ACN-PCN method is being adopted, and the local classification number (LCN), defining the load of an aircraft, is also used sometimes. Indian Roads Congress Special Publication No. 17 presents recommendations about overlays on cement concrete pavements, especially for roads. The paper gives its specifications or formulae for: (1) traffic; (2) condition of existing pavement; (3) partially bonded overlay; (4) unbonded overlay; and (5) fully bonded overlay. As far as possible, existing cement concrete pavements, requiring strengthening, should be overlaid at the first sign of distress, while the slab is still only slightly cracked.
The portland cement used for construction of rigid pavements is an energy intensive material and ... more The portland cement used for construction of rigid pavements is an energy intensive material and hence efforts are being made to find substitute materials for partial replacement of cement in concrete, and conserve energy. On the other hand, utilisation of coal for generation of power is increasing rapidly. This has resulted in production of large quantities of fly ash from coal burning power plants. Fly ash from thermal power plants can be used as an admixture to concrete for saving cement as well as to provide solutions for its disposal problems. Use of fly ash in concrete would be an environmentally friendly way of utilising a waste material like fly ash. Currently fly ash finds application in road pavement structure, mainly for sub-base /base course and embankment. Fly ash admixed concrete can be a very good material for construction of pavement. It is generally designed as a partial replacement of cement or aggregate or both. This paper describes the different methods of using fly ash in concrete as a paving material, advantages gained by using fly ash in concrete and mechanism of durability increase in fly ash admixed concrete. The experiences of CRRI for using fly ash admixed concrete are also highlighted.
The paper reports results of laboratory and semi-field investigations, for evaluating various imp... more The paper reports results of laboratory and semi-field investigations, for evaluating various important properties of lime-granulated blast furnace slag (GBFS) concrete of different mix proportions, for construction of both semi-rigid and rigid pavements. The paper also highlights the types of reaction products formed and techno-economic aspects of the material. Concrete specimens with different mix proportions were subjected to a battery of tests to ascertain: workability; long term compressive strength and flexural strength; drying shrinkage, tensile and shear strength; Poisson's Ratio, and durability. The reaction products formed during the reaction of lime- GBFS binder were identified by x-ray diffraction (XRD), differential thermal analysis (DTA) and infra red analysis (IR) methods. Studies were also carried out using the loading frame in the heavy test bed area. Pavement slabs were constructed using: (a) lime-GBFS concrete as the base course material; (b) lime-GBFS as the wearing course material. Both the slabs were subjected to plate load tests to ascertain their deflection characteristics and load bearing capacity. The results of these tests are presented.
Road transport is the most prevalent mode of transport in our country. However, large sections of... more Road transport is the most prevalent mode of transport in our country. However, large sections of our roads still suffer from congestion, inadequate pavement thickness and road safety hazards. Significant segments of population in hilly and tribal areas do not have all weather road accessibility. CSIR-Central Road Research Institute (CRRI), New Delhi has a crucial role to play in the road development programmes being undertaken by the government. Over the years, CRRI has developed many new techniques and solutions to problems affecting road sector. Notable achievements include urban road traffic and air pollution study, techniques for usage of waste materials, safety audits for various sections of national highways, traffic and transportation studies of metropolitan cities, bridge design and rating, providing solutions to premature pavement failures across the country, ground improvement, landslide problem mitigation, etc. The present article provides a glimpse of activities of CRRI...
The behavior of stone columns in soft marine clay under a cement concrete road pavement was exami... more The behavior of stone columns in soft marine clay under a cement concrete road pavement was examined through PLAXIS 2D. It is a well-known fact that modeling in 2D will require less computational effort compared to a full 3D analysis. The main difficulty with regard to PLAXIS 2D modeling of stone columns is the conversion of the stone column grid to a 2D stone trench structure. Different approaches (enhanced soil parameter, embedded beam element and equivalent column method) are available in modeling of stone column in PLAXIS 2D. However, not much literature is available for choosing the proper approach in PLAXIS 2D modeling of stone column in soft marine clay. The aim of this paper is to establish the suitable approach which provides better results with minimal effort for modeling in PLAXIS 2D. A case study, of work carried out at Mumbai for the road pavement between Wadala Depot and Chembur, provides the basis for PLAXIS 2D modeling. The sub-soil profile in this stretch comprises ...
Use of construction and demolition (C&D) waste aggregates in road works is a widely accepted prac... more Use of construction and demolition (C&D) waste aggregates in road works is a widely accepted practice in many countries, such as Denmark, USA, UK, France, Japan, etc. But unfortunately, its usage for road construction is negligible in India. Delhi City produces about 3000 tonnes of construction and demolition waste every day. Re-utilisation or recycling is an important strategy for management of such waste. Recycling of aggregate material from construction and demolition waste can help to reduce the demand-supply gap for aggregates, conserve depleting sources of good quality stone aggregates, and decrease environmental degradation due to quarrying activities. To evolve more avenues for utilisation of C&D waste in the area of road construction, Central Road Research Institute (CSIR), New Delhi carried out a 'Feasibility Study on Use of Construction & Demolition (C&D) Waste in Road Works.' In this study a detailed laboratory investigation was done on C&D samples collected from...
This paper describes a simple systematic procedure, which is being adopted in India for the overl... more This paper describes a simple systematic procedure, which is being adopted in India for the overlay design of rigid pavements. The basic criteria of overlay design should prevent the flexural stresses, induced in the surfacing layer and the existing pavement, from exceeding the corresponding flexural strength of concrete. The design of overlay for airfields and roads is specified, and a computer program for the evaluation of their rigid pavements is also being prepared. For the evaluation of rigid airfield pavements, the ACN-PCN method is being adopted, and the local classification number (LCN), defining the load of an aircraft, is also used sometimes. Indian Roads Congress Special Publication No. 17 presents recommendations about overlays on cement concrete pavements, especially for roads. The paper gives its specifications or formulae for: (1) traffic; (2) condition of existing pavement; (3) partially bonded overlay; (4) unbonded overlay; and (5) fully bonded overlay. As far as po...
The paper reports results of laboratory and semi-field investigations, for evaluating various imp... more The paper reports results of laboratory and semi-field investigations, for evaluating various important properties of lime-granulated blast furnace slag (GBFS) concrete of different mix proportions, for construction of both semi-rigid and rigid pavements. The paper also highlights the types of reaction products formed and techno-economic aspects of the material. Concrete specimens with different mix proportions were subjected to a battery of tests to ascertain: workability; long term compressive strength and flexural strength; drying shrinkage, tensile and shear strength; Poisson's Ratio, and durability. The reaction products formed during the reaction of lime- GBFS binder were identified by x-ray diffraction (XRD), differential thermal analysis (DTA) and infra red analysis (IR) methods. Studies were also carried out using the loading frame in the heavy test bed area. Pavement slabs were constructed using: (a) lime-GBFS concrete as the base course material; (b) lime-GBFS as the ...
The portland cement used for construction of rigid pavements is an energy intensive material and ... more The portland cement used for construction of rigid pavements is an energy intensive material and hence efforts are being made to find substitute materials for partial replacement of cement in concrete, and conserve energy. On the other hand, utilisation of coal for generation of power is increasing rapidly. This has resulted in production of large quantities of fly ash from coal burning power plants. Fly ash from thermal power plants can be used as an admixture to concrete for saving cement as well as to provide solutions for its disposal problems. Use of fly ash in concrete would be an environmentally friendly way of utilising a waste material like fly ash. Currently fly ash finds application in road pavement structure,mainly for sub-base /base course and embankment. Fly ash admixed concrete can be a very good material for construction of pavement. It is generally designed as a partial replacement of cement or aggregate or both. This paper describes the different methods of using f...
The NH-39 in the stretch between km 162.00 in Nagaland and km 236.1 in Manipur experiences freque... more The NH-39 in the stretch between km 162.00 in Nagaland and km 236.1 in Manipur experiences frequent landslides at different locations which cause disruption to the traffic and damages to the road infra structures and agricultural land. One of the severely affected locations on NH - 39 at km 221 in the Manipur state, experienced unprecedented subsidence and landslide phenomenon in 2008. This failure has been classified as a compound landslide. Multi-directional tension cracks are observed all over the landslide area. The soil has high clay content as verified by shrinking and swelling observed in the field. About 7m high gabion wall constructed earlier have sunk and distorted. Another old gabion retaining wall down below, has also been broken and moved. Slope stability Analysis was carried out by GEO 4 software. The paper highlights the outcome of the study along with design of suitable remedial measures for its prevention based on the field and laboratory investigations. .
The advent of geosynthetics has dramatically transformed the practice of geotechnical engineering... more The advent of geosynthetics has dramatically transformed the practice of geotechnical engineering around the world. Boom in road infrastructure development in our country has led to enhanced demand for cost effective new construction materials like geosynthetics. During last decade geosynthetic materials has been used in numerous ways as reinforcement in road infrastructure. This paper discuss the potential application of geosynthetic materials specially geogrid and geotextile form the perspective of reinforcement in bituminous pavement and associated road infrastructure. Expected benefits in terms of improvement in service life, reduction in overall thickness and ease of construction in difficult areas are discussed in detail. Utilization of geosynthetic materials for subgrade stabilization, as base reinforcement and overlay reinforcement with stress absorbing interlayer are discussed in detail. This paper also presents few case studies, involving pioneering use of geosynthetic materials enumerating design and construction approach with their success stories.
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of geosynthetic materials specially geogrid and geotextile form the perspective of reinforcement in bituminous pavement and associated road infrastructure. Expected benefits in terms of improvement in service life, reduction in overall thickness and ease of construction in difficult areas are discussed in detail. Utilization of geosynthetic materials for subgrade stabilization, as base reinforcement and overlay reinforcement with stress absorbing interlayer are discussed in detail. This paper also presents few case studies, involving pioneering use of geosynthetic materials enumerating design and construction approach with their success stories.
of geosynthetic materials specially geogrid and geotextile form the perspective of reinforcement in bituminous pavement and associated road infrastructure. Expected benefits in terms of improvement in service life, reduction in overall thickness and ease of construction in difficult areas are discussed in detail. Utilization of geosynthetic materials for subgrade stabilization, as base reinforcement and overlay reinforcement with stress absorbing interlayer are discussed in detail. This paper also presents few case studies, involving pioneering use of geosynthetic materials enumerating design and construction approach with their success stories.