Rama Rizana

King Fahd University of Petroleum and Minerals, Civil Engineering, Graduate Student

Muhammadiyah University of Yogyakarta, Civil Engineering, Alumnus

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I am Rama Rizana, now I am studying in Master of Science Program - Department of Civil Engineering, concentration Transportation Engineering - King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia.Previously I graduated from Civil Engineering Department, Universitas Muhammadiyah Yogyakarta, Indonesia. I also became teaching and course laboratory assistant there.I love reading, writing, blogging and playing badminton.

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Papers by Rama Rizana

Persentasi Studi Sains, teknik dan manajemen di Arab Saudi

by Rizki Syaputra and Rama Rizana

Persentasi studi sains, teknik dan manajemen di Arab sudi. 1. Ummul Qura University: www.uqu.edu... more

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A mini review on percent time-spent-following (PTSF) as the service measure for two-lane highways

Communications in Science and Technology, 2018

Percent Time Spent Following (PTSF) is used by the Highway Capacity Manual (HCM) as one of the se... more Percent Time Spent Following (PTSF) is used by the Highway Capacity Manual (HCM) as one of the service measures to assess the level-of-service of two-lane highways since the 2000 edition. But, the problem facing to estimate this parameter is that the difficulty to measure it directly in the field. From several studies, it is known that the HCM analytical procedures applied in PTSF estimation produces inconsistent results with the 3 s surrogate measure and most of them are overestimate. This paper presents a review on estimating PTSF on two-lane highways from several studies that adopted HCM procedures.

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Presentasi Studi Sains, Teknik, Manajemen di Arab Saudi - ver 1.0

Presentasi mengenai studi sains, teknik dan manajemen di Arab Saudi. Banyak yang masih belum tau ... more Presentasi mengenai studi sains, teknik dan manajemen di Arab Saudi. Banyak yang masih belum tau bahwa studi di Arab Saudi tidak hanya untuk bidang agama saja, bahkan beberapa kampus di Arab Saudi sudah diakui untuk bidang sains, teknik dan bidang non agama lainnya. Di dokumen ini, saya rangkum berbagai info penting terkait studi sains, teknik dan manajemen di Arab Saudi, meliputi beberapa fakta terkait studi di Arab Saudi, persyaratan pendaftaran, alur dan jadwal pendaftaran.

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Pengaruh Penggunaan Limbah Plastik Polipropilena sebagai Pengganti Agregat pada Campuran Laston terhadap Karakteristik Marshall

Pertumbuhan jumlah penduduk yang pesat dalam beberapa dekade terakhir berbanding lurus dengan pen... more Pertumbuhan jumlah penduduk yang pesat dalam beberapa dekade terakhir berbanding lurus dengan peningkatan jumlah konsumsi berbagai sumber daya alam. Hal ini berimplikasi pada timbulnya permasalahan alam, khususnya penggunaan agregat alam yang semakin lama semakin meningkat, terlebih di bidang konstruksi bangunan Teknik Sipil. Sudah seharusnya hal ini menjadi perhatian untuk mencari alternatif material atau bahan pengganti agregat alam tersebut. Salah satu material yang bisa digunakan adalah limbah plastik yang digunakan pada penelitian ini adalah jenis Polipropilena (PP). Limbah plastik banyak dihasilkan setiap tahunnya namun sedikit yang dapat dimanfaatkan. Penelitian ini dilakukan untuk mengetahui pengaruh dari penggunaan PP sebagai pengganti agregat dalam campuran Lapis Aspal Beton (Laston) ditinjau dari karakteristik Marshall dengan menggunakan tiga persentase kadar aspal, yakni 5%, 6% dan 7% dan kadar PP yang digunakan adalah 0%, 2%, 5%, dan 10%. Masing-masing variasi dibuat sebanyak dua sampel (duplo). Dari pengujian Marshall yang dilakukan didapatkan hasil bahwa penggunaan PP cenderung meningkatkan nilai stabilitas, kelelehan, VIM, VMA dan Marshall Quotient (MQ). Adapun nilai VFA cenderung menurun seiring dengan penambahan kadar PP yang digunakan.

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Fiber-Reinforced Soil

Most buildings and other civil engineering construction projects are started as raw land. The fir... more Most buildings and other civil engineering construction projects are started as raw land. The first step to be performed is site investigation in order to know the situation of the site. It is difficult to find location that has perfect soil properties. One of the alternative to handle this problem is by modifying the existing soil. Hausmann (1990) distinguished the ground improvement or modification or stabilization into four groups, one of them is modification by inclusion and confinement or it is called as soil reinforcement. The concept of this method is by utilizing the properties of the materials used to resist tensile stress. There are several materials that can be used in this group, such as fiber. Two types of fiber-reinforcing soil based on the distribution of fiber within the soil, pattern-fibrous and randomly-distributed. In this paper, randomly distributed-reinforced soil is discussed.

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