Open AccessStability performance of demolition waste composite as landfill liner
Author(s) -
Mochamad Arief Budihardjo,
Mochtar Hadiwidodo,
Irawan Wisnu Wardhana,
E G Praptomo,
Budi Prasetyo Samadikun,
Annisa Sila Puspita,
Bimastyaji Surya Ramadan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/896/1/012001
Subject(s) - lime , demolition , bentonite , composite number , leachate , geotechnical engineering , cohesion (chemistry) , direct shear test , materials science , permeability (electromagnetism) , geosynthetic clay liner , environmental science , waste management , composite material , hydraulic conductivity , shear (geology) , geology , engineering , civil engineering , metallurgy , chemistry , soil water , soil science , biochemistry , organic chemistry , membrane
Landfill liner is one of the essential components that prevent leachate infiltration of the soil from causing pollution. A liner has specific design criteria to function optimally. This study analyses the permeability and stability value of the mixture of composite materials consisting of demolition waste, bentonite, and lime materials. This study using some methods include falling head method for permeability test and direct shear strength for stability test. Based on the results of this research, it can be seen that the mixture of demolition waste and bentonite to composite can reduce the internal shear angle and increase the cohesion. While lime provides a fluctuating value for cohesiveness, it can increase the internal shear angle. The best mixture to be used as an alternative composite liner is the V6 composite which has a demolition waste composition of 79%, 20% bentonite, and 1% lime with a permeability coefficient value of 8.526 × 10 −7 cm/s.