Study on strength characteristics of critical state for expansive soil

2013 ◽  
pp. 177-180
Keyword(s):  
Critical State ◽  
Expansive Soil ◽  
Strength Characteristics

scholarly journals RESEARCH ON MODEL FITTING AND STRENGTH CHARACTERISTICS OF CRITICAL STATE FOR EXPANSIVE SOIL

2013 ◽  
Vol 19 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Zhiqing Li ◽  
Chuan Tang ◽  
Ruilin Hu ◽  
Yingxin Zhou
Keyword(s):  
Critical State ◽  
Model Fitting ◽  
Expansive Soil ◽  
Dry Density ◽  
Initial Water Content ◽  
Test Results ◽  
Stress Strain ◽  
Initial Water ◽  
Curve Model ◽  
Shearing Strength

According to Mengzi expansive soil, consolidated drained tests and undrained tests are carried on under saturated and remoulded conditions. The stress-strain characteristics of saturated soil are researched systematically under different confining pressure, initial dry density, initial water content, shearing rate and drainage condition. The inherent unity of diversity of shearing strength for the same samples measured by different experimental methods is indicated according to the normalization of critical state test results. And the failure lines in p ‘- q - ν space of remoulded saturated expansive soil under consolidated drained and undrained conditions are attained. The hyperbolic curve model can fit well the weak hardening stress-strain curves and the exponential curve model can fit the weak softening stress-strain curves. The test results can provide technical parameters and theoretical help for shearing strength variation of slope during rainfall and strength state of soil structure in normal water level.

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.

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