Enhanced Performance of Earthen Blocks, Modified by Geo-net and Coir Fibers
Author(s):
Abhijit Das, Jhuma Mitra, Bharat Sarkar, Prasenjit Das, Debraj Das
Keywords:
Soils, geo-net, coir fiber, rammed earthen blocks, modified earthen blocks, shear strength, compressive strength.
Abstract
Earthen structures are known to be cost-effective and relatively simple to construct, making them ideal for remote areas and low-income groups. These structures can be built with locally available eco-friendly materials. Such designs are typically made of soil blocks. However, such blocks are weak in compressive and shearing strength. The main objective of this work is to compare earthen blocks modified by geonet and coir fibers with rammed earthen blocks of the same soil. In terms of compressive and shear strength, to verify this method of soil modification. The modification is accomplished by combining coir fibers with soil and laying out the geo-net horizontally with uniform vertical spacing. The block is made up of well-graded soil, coir fibers (at a rate of 1% of the soil's weight), and geo-net (placed horizontally with uniform spacing) and measures 7 x 7 x 7 cm. 6 days in the open air and one day in the oven at 100 C. There were three types of blocks made: I standard rammed earth blocks, (ii) blocks modified with coir fibers, and (iii) blocks modified with both coir fibers and geo-net. Three blocks from each type were tested and compared in terms of compressive and shear strength. The results show that the blocks modified with geonet and coir fibers have significantly increased compressive and shear strength.
Article Details
Unique Paper ID: 157235

Publication Volume & Issue: Volume 9, Issue 6

Page(s): 339 - 346
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