scholarly journals Influence of coir fiber reinforcement on shear strength parameters of cement modified marginal soil mixed with fly ash

2020 ◽  
Author(s):  
G.V. Praveen ◽  
Pandu Kurre
Keyword(s):  
Shear Strength ◽  
Fly Ash ◽  
Fiber Reinforcement ◽  
Coir Fiber ◽  
Shear Strength Parameters ◽  
Strength Parameters ◽  
Marginal Soil

scholarly journals Enhancement of Shear Strength Parameters of Clayey Soil by using Polypropylene Fiber

2019 ◽  
Vol 9 (2) ◽  
pp. 3536-3540
Keyword(s):  
Shear Strength ◽  
Soil Properties ◽  
Clayey Soil ◽  
Polypropylene Fiber ◽  
Fiber Reinforcement ◽  
Waste Materials ◽  
Shear Strength Parameters ◽  
Strength Parameters ◽  
Unconfined Compression Test ◽  
Foundation Soil

When the foundation soil is not strong enough to hold on with the loads transmitted to it .At such places the structure could be damaged, in order to eliminate this threat the soil properties such as stability, shear strength, durability etc are enhanced by mixing it with different admixtures such as lime, cement etc .At some occasions fibers (obtained from waste materials)are used to enhance the soil properties. In past a large number of studies have shown the effectiveness of such mixing materials at considerable percentages. It has been studied that the outcome of such materials when used in soil improvement techniques is handsome. In this examination the polypropylene fiber ,obtained from waste materials has been used. The different percentages of fiber reinforcement are used and the corresponding changes in the shear strength parameters are examined. The effects of polypropylene fiber reinforcement on the soil samples are examined by carrying out Direct Shear Test and Unconfined Compression Test

Reliability Method to Estimate Shear Strength Parameters

2011 ◽  
Vol 52-54 ◽  
pp. 1752-1756
Author(s):  
Li Hong Chen ◽  
Yu Fei Zhao
Keyword(s):  
Shear Strength ◽  
Linear Regression ◽  
Moment Method ◽  
Limit State ◽  
Safety Evaluation ◽  
Regression Method ◽  
Linear Regression Method ◽  
Shear Strength Parameters ◽  
Strength Parameters ◽  
Reliability Method

The design and safety evaluation of a geotechnical project is influenced by the shear strength parameters of geo-material. Moment method and linear regression method are the mainly used methods to estimate the shear strength parameters. But moment method is always over estimate the variation of strength parameters due to the smaller sample size, meanwhile the conventional linear regression method cannot obtain the standard deviation. Base on the reliability theory, a new method employing Solver add-in of spreadsheet was developed to calculate the shear strength parameters. The method was simplified by the principle that the shortest distance form origin point to the limit state surface in the normalization space was the reliability index. Four hundred and four samples of direct shear tests of rock mass from many large hydraulic projects in China were analyzed by four statistic methods including the new proposed one. Comparing results of different methods indicated that the new reliability statistic method had good performance than the traditional ways.

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