Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain
Idharmahadi Adha
Universitas Lampung
Civil Engineering, Building, Construction & Architecture Other

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PEMANFAATAN ABU SEKAM PADI SEBAGAI PENGGANTI SEMEN PADA METODA STABILISASI TANAH SEMEN Idharmahadi Adha
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 15, No 1 (2011): Edisi April Tahun 2011
Publisher : UNIVERSITAS LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sub base course and base course are the layers under the surface course. Generally, materials of sub base course or base course are fine aggregates and coarse aggregates. But some locations in field, sometimes can not be found the aggregates to use as the material construction. Portland cement is always used as the additive material in soil stabilization method, but cost of portland cement is very high. One of the solution is used mixture of rice husk ash and portland cement as the additive material to stabilized of soils. The result of research, showed that mixing of rice husk ash material and portland cement can be able to increase of soil plasticity properties and bearing capacity and shear strength of soils. Based on testing of bearing capacity at 9% prosentage of rice husk ash material and portland cement, with curring time in 28 days, can be recommended that soil stabilization be used as base course in pavement structure of highway engineering, where CBR Laboratory value is 120% in unsoked CBR and 102% in soaked CBR.
Analysis of Supportive Lower Structure Building on Overpass Construction In The Sumatera Trans Toll Road Dian Erlisa Lidyawati; Idharmahadi Adha; Ofik Taufik Purwadi
Jurnal Rekayasa Sipil dan Desain Vol 8, No 1 (2020): Edisi Maret 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Every light or heavy load construction recquires a supportive foundation, the foundation must be calculated to be able to guarantee the stability of the building to its own weight, building loads and external forces. Pillar foundation is used as a building foundation when the land under the building does not provide sufficient carrying capacity to carry the weight of the building and its load. This research was carried out on one of the bridges on the Trans Sumatra Toll Road. A pillar foundation is used to the toll road project. The purpose of this research is to determine the bearing capacity of the foundation on the pier and abutment from the results of load on the upper construction. Based on the results of the carrying capacity of abutment is obtained 60 cm diameter of pile with 6 pieces, and the bridge’s pillar is 60 cm of pile 15 pieces. While the main reinforcement diameter is 22 mm as much as 6 pieces, with Ø10 strap and 250 mm distance.  Keywords: Foundation, Pillar, Pile, Pile Carrying Capacity
Co-Authors Dian Erlisa Lidyawati Ofik Taufik Purwadi