Plasticity and Strength Characteristics of Expansive Soil Treated with Xanthan Gum Biopolymer

2020 ◽  
pp. 649-663
Author(s):  
Suresh Prasad Singh ◽  
Ritesh Das ◽  
Debatanu Seth
Keyword(s):  
Xanthan Gum ◽  
Expansive Soil ◽  
Strength Characteristics

scholarly journals Sustainable Improvement of Expansive Clays Using Xanthan Gum as a Biopolymer

2019 ◽  
Vol 5 (9) ◽  
pp. 1893-1903 ◽  
Author(s):  
Jayaprakash Reddy Joga ◽  
B.J.S. Varaprasad
Keyword(s):  
Xanthan Gum ◽  
Soil Stabilization ◽  
Expansive Soil ◽  
Dry Density ◽  
Maximum Dry Density ◽  
Direct Shear Tests ◽  
Sustainable Improvement ◽  
Curing Period ◽  
Proctor Test ◽  
Gum Content

In this study, Biopolymers are used as an attempt to create sustainable environment by eliminating the negative environmental impacts of using traditional admixtures in soil stabilization. Xanthan Gum is used as a biopolymer to treat expansive soil. A series of tests like, Standard Proctor Test, Unconfined Compressive Strength (UCS), One-Dimensional Consolidation and Standard Direct Shear tests were conducted on virgin soil and biopolymer (0, 0.5, 1, 1.5, 2, 2.5%) treated soils. The results revels that by addition of biopolymer content Maximum Dry Density (MDD) of soil decreases and Optimum Water Content (OMC) increases. The UCS value is increased by 4 times for the addition of 1% xanthan gum to soil for 28 day curing period. Compressibility of soil is deceased by 65% for 28day curing period. Shear parameters of treated soil shows improvement with addition of xanthan gum content. For further examination, SEM analyses were conducted on the tested samples and revealed that the soil fabric had white lumps and pores in the soil structure were filled with cementitious gel. Moreover, the resistance towards shear and compressibility of treated samples increased with curing times. Therefore, use of Xanthan Gum for soil stabilization is a solution for eco-friendly soil stabilizing material.

scholarly journals Strength Characteristics of Compacted Fly Ash Treated Expansive Soil due to Wetting-Drying Cycles Repetition

2021 ◽  
Vol 9 (7) ◽  
pp. 2117-2128
Author(s):  
Hasriana Hasriana ◽  
Hamkah Hamkah ◽  
Melly Lukman ◽  
Zubair Saing
Keyword(s):  
Fly Ash ◽  
Expansive Soil ◽  
Strength Characteristics

Effect of chemical stabilisation on index and engineering properties of a remoulded expansive soil

2021 ◽  
pp. qjegh2020-142
Author(s):  
E. Ramanjaneya Raju ◽  
B. R. Phanikumar ◽  
M. Heeralal
Keyword(s):  
Expansive Soil ◽  
Dry Weight ◽  
Liquid Limit ◽  
Strength Characteristics ◽  
Engineering Properties ◽  
Compaction Characteristics ◽  
Swell Index ◽  
Granulated Blast Furnace Slag ◽  
Free Swell ◽  
Furnace Slag

This note presents the effect of lime, cement, fly ash and ground granulated blast furnace slag (GGBS) on free swell index (FSI), liquid limit (LL), plasticity index (PI), compaction characteristics, hydraulic conductivity (k) and strength characteristics of an expansive soil. The effect of the above chemicals on California bearing ratio (CBR) was also presented. Lime content was varied as 0%, 1%, 2%, 4% and 6% and the amounts of other additives were varied as 0%, 5%, 10%, 15% and 20% by dry weight of the soil. FSI, LL and PI decreased significantly with increasing additive contents. Compaction characteristics also improved with increasing additive contents. Strength characteristics showed improvement at higher additive contents especially at higher curing periods. CBR (determined in soaked condition) also increased significantly with increasing additive contents.

Evaluating the Strength Characteristics of Lime and Metakaolin Stabilized Expansive Soil

2018 ◽  
pp. 239-248 ◽  
Author(s):  
Venkateswarlu Dumpa ◽  
Rajesh Vipparty ◽  
Anjan Kumar Mantripragada ◽  
G. V. R. Prasada Raju
Keyword(s):  
Expansive Soil ◽  
Strength Characteristics
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