Open AccessVariation in Geotechnical Behavior of Bentonite-Soil Blends in the Salty Environment of Liner
Author(s) -
Hrithik Nath
Publication year - 2020
Publication title -
international journal of innovative science and research technology
Language(s) - English
Resource type - Journals
ISSN - 2456-2165
DOI - 10.38124/ijisrt20aug537
Subject(s) - leachate , bentonite , consolidation (business) , geotechnical engineering , atterberg limits , environmental science , permeability (electromagnetism) , compaction , groundwater , soil test , hydraulic conductivity , soil water , environmental engineering , waste management , geology , soil science , engineering , chemistry , biochemistry , accounting , membrane , business
Waste management is one of the most critical issues in Bangladesh. Every day thousands of people are dumping their daily household wastes in some specific dumping sites. The leachate that is being generated from these wastes is changing the quality of the soil by mixing with the surrounding soil and is also contaminating the groundwater. Several components such as water and different varieties of salt are found in the leachate. This paper represents the findings of a recent study on the effect of inorganic NaCl salt on certain geotechnical properties of clay soil mixed with bentonite used as a liner material. The clay soil was collected from a local household waste dump in the Khanabari area of Khulna district. The soil was mixed with different percentages of bentonite (10% & 20%) to test the effect of various concentrations (0M, 0.1M & 1M) of inorganic salt. For this reason, laboratory tests like compaction test, liquid limit test, 1-D consolidation test, permeability test, free swell test and pH test were performed. Finally, it was concluded that a salty environment could have a significant effect on the mixture's geotechnical characteristics.