Study on HDPE Mixed with Sand as Backfilled Material on Retaining Structure

4th International Conference on Civil and Environmental Engineering for Sustainability

地球科学;生态环境科学;经济学

Talib, Z.A.^1

Department of Infrastructure and Geomatics Engineering, Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), Parit Raja, Batu Pahat, Johor

86400, Malaysia^1

关键词: Backfill material;    Direct shear test;    High density polyethylene(HDPE);    Permeability test;    Relative density;    Retaining structure;    Sand and gravels;    Sieve analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/140/1/012153/pdf
DOI  :  10.1088/1755-1315/140/1/012153

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The failure of the retaining wall is closely related to backfill material. Granular soils such as sand and gravel are most suitable backfill material because of its drainage properties. However two basic materials are quite heavy and contribute high amount of lateral loads. This study was to determine the effectiveness High Density Polyethylene (HDPE) as a backfill material. HDPE has a lighter weight compare to the sand. It makes HDPE has potential to be used as backfill material. The objective of this study is to identify the most effective percentage of HDPE to replace sand as a backfill material. The percentage of HDPE used in this study was 20%, 30%, 50%, 75% and also 100%. Testing involved in this study were sieve analysis test, constant head permeability test, direct shear test and relative density test. The result shows that the HDPE can be used as backfilled material and save the cost of backfill material.