• Sanjay B. Rajpara
• Mayur G. Vanza

Expansive soils are considered as highly problematic soil because of the volume change behavior. When the light weight structure is resting over expansive soil, due to change in moisture content the soil expands, due to this the cracks are developed in the structure. Further these cracks expand and lead to structure failure. To overcome above problem, test series were conducted with micropile and micropile with geotextile to investigate the expansive characteristics of the soil. This paper present the result of experimental investigation carried out for understanding the effectiveness of geotextile micropile system. For this purpose the tank of size 75cm x 75cm x 75cm was used. The test tank was filled with the black cotton soil up to 20 cm depth at optimum moisture content and maximum dry density. Soil was filled in the tank in four equal layers with proper compaction to achieve required dry density and optimum moisture content, then the micropile group in a square pattern with the footing plate of size 15cm x 15cm x1cm is installed and the results are compared with only footing plate without micropiles. (The 30cm layer above compacted soil layer is filled with water) For the second stage the non-woven geotextile layer of the size of footing plate is fixed with the group of micropile in a square pattern with the help of nut and bolt arrangement as a single layer at a depth of 0.33B and as a double layer at a depth of 0.33B and 0.67B from the footing plate. It is observed that there is 62% reduction in heave by using four micropiles and 86% and 93% reduction in heave by using four micropiles with single geotextile layer and double geotextile layer.

Expansive soil; Heave; Micropile; Geotextile

"Control of Heave Action Using Micropile with Geotextile Layer in Expansive Soil ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.265-269, April-2019, Available :http://www.jetir.org/papers/JETIR1904539.pdf

"Control of Heave Action Using Micropile with Geotextile Layer in Expansive Soil ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp265-269, April-2019, Available at : http://www.jetir.org/papers/JETIR1904539.pdf