Determination of Resilient Modulus of Layered Bio-stabilized Soil

2021 ◽  
pp. 581-588
Author(s):  
V. Divya ◽  
M. N. Asha
Keyword(s):  
Resilient Modulus ◽  
Stabilized Soil

scholarly journals A Methodology for Determination of Resilient Modulus of Asphaltic Concrete

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
A. Patel ◽  
M. P. Kulkarni ◽  
S. D. Gumaste ◽  
P. P. Bartake ◽  
K. V. K. Rao ◽  
...  
Keyword(s):  
Resilient Modulus ◽  
Triaxial Tests ◽  
Asphaltic Concrete ◽  
Empirical Relationships ◽  
Cyclic Triaxial Tests ◽  
Electronic Circuitry ◽  
Quality Check ◽  
R Value ◽  
Vast Variation

Resilient modulus, , is an important parameter for designing pavements. However, its determination by resorting to cyclic triaxial tests is tedious and time consuming. Moreover, empirical relationships, correlating to various other material properties (namely, California Bearing Ratio, CBR; Limerock Bearing Ratio, LBR; R-value and the Soil Support Value, SSV), give vast variation in the estimated results. With this in view, an electronic circuitry, which employs bender and extender elements (i.e., piezo-ceramic elements), was developed. Details of the circuitry and the testing methodology adopted for this purpose are presented in this paper. This methodology helps in determining the resilient modulus of the material quite precisely. Further, it is believed that this methodology would be quite useful to engineers and technologists for conducting quality check of the pavements, quite rapidly and easily.

Field and Laboratory Determination of Subgrade Resilient Modulus and its Application in Pavement Design

2014 ◽  
Vol 43 (5) ◽  
pp. 20140106 ◽  
Author(s):  
Richard Ji ◽  
Tommy Nantung ◽  
Nayyarzia Siddiki ◽  
Tao Liao ◽  
Daehyeon Kim
Keyword(s):  
Resilient Modulus ◽  
Pavement Design ◽  
Laboratory Determination

Prediction of resilient modulus of frozen unbound road materials using soil-freezing characteristic curve

2018 ◽  
Vol 55 (8) ◽  
pp. 1200-1207 ◽  
Author(s):  
Junping Ren ◽  
Sai K. Vanapalli
Keyword(s):  
Resilient Modulus ◽  
Characteristic Curve ◽  
Soil Freezing ◽  
Subzero Temperature ◽  
Proposed Model ◽  
Road Materials ◽  
Frozen State ◽  
Drying Conditions ◽  
Semi Empirical

The resilient modulus is a key parameter required in the mechanistic design of pavements. Experimental determination of the resilient modulus requires elaborate equipment for testing and requires trained personnel; for this reason, it is expensive. There are several models for predicting the resilient modulus for unbound road materials that take into account the influence of wetting and drying conditions. However, well-established models are not available for the prediction of the resilient modulus of these materials in a frozen state. In this paper, a semi-empirical model, which uses a soil-freezing characteristic curve as a tool, is proposed for predicting the variation of the resilient modulus with subzero temperature and the associated cryogenic suction for frozen soils. Experimental data on seven different pavement unbound materials were used to validate the proposed model. It is shown that the model can reasonably predict the resilient modulus of the investigated soils that are in a frozen state. More investigations on different types of soils would be useful to better understand the strengths and limitations of the proposed model.

Determination of the Resilient Modulus under Anisotropic Stress Conditions

IFCEE 2021 ◽  
2021 ◽  
Author(s):  
Ceren Aydin ◽  
Mustafa Hatipoglu ◽  
Bora Cetin ◽  
Halil Ceylan
Keyword(s):  
Resilient Modulus ◽  
Stress Conditions ◽  
Anisotropic Stress

Laboratory Performance Evaluation of Cement-Stabilized Soil Base Mixtures

2000 ◽  
Vol 1721 (1) ◽  
pp. 19-28 ◽  
Author(s):  
Louay N. Mohammad ◽  
Amar Raghavandra ◽  
Baoshan Huang
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Unconfined Compressive Strength ◽  
Resilient Modulus ◽  
Flexible Pavements ◽  
Indirect Tensile Strength ◽  
Treated Soil ◽  
Stabilized Soil ◽  
Indirect Tensile ◽  
Soil Mixtures

In-place cement-stabilized soils have served as the primary base material for the majority of noninterstate flexible pavements in Louisiana for many years. These materials are economically and easily constructed and provide outstanding structural characteristics for flexible pavements. However, these cement-treated materials crack due to shrinkage, with the cracks reflecting from the base to the surface. A laboratory study examined the performance of four different cement-stabilized soil mixtures recently used in the construction of test lanes at the Louisiana Pavement Testing Facilities. Laboratory tests included the indirect tensile strength and strain, unconfined compressive strength, and indirect tensile resilient modulus tests. The four mixtures were ( a) in-place-mixed cement-treated soil with 10 percent cement, ( b) plant-mixed cement-treated soil with 10 percent cement, ( c) plant-mixed cement-treated soil with 4 percent cement, and ( d) plant-mixed cement-treated soil with 4 percent cement and fiber reinforcement. The results indicated that there was no significant difference in performance between the plant-mixed and in-place-mixed cement-treated soil mixtures. The inclusion of fiber to the cement-treated soil mixture significantly increased the indirect tensile strain and the toughness index. Increases in compaction effort maintained or significantly increased the indirect tensile strength and unconfined compressive strength. Increases in curing period maintained or significantly increased indirect tensile and unconfined compressive strength as well as the resilient modulus of the mixtures.

scholarly journals LIQUID LIMIT VALUES OBTAINED BY DIFFERENT TESTING METHODS

2017 ◽  
Vol 50 (2) ◽  
pp. 778 ◽  
Author(s):  
G. Kollaros
Keyword(s):  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Liquid Limit ◽  
Natural Soil ◽  
Cone Penetrometer ◽  
Atterberg Limit ◽  
Limit Values ◽  
Soil Material ◽  
Stabilized Soil

Specifications in European countries include a variety of methods for determining the liquid limit based on Casagrande type devices and on the fall cone penetrometer. The results of a comparative study of the liquid limits determined using these two fall-cone methods are presented for lime stabilized soil. Soil material sampled in the area of Evros Regional Unit has been stabilized with lime in order to enhance its engineering characteristics. The soil and the soil-lime mixtures subjected in Atterberg limit testing. The liquid limit values were correlated through a linear regression analysis with the rest of the consistency limits of both the natural soil and its mixtures with various lime contents. The correlation coefficients in all cases were high, with those referring to results obtained by the Casagrande method to be dominant. The comparison of liquid limit values determined by either method showed that there is a systematically good correlation between them, with the decrease rate in function of the lime content in the mixture to be more intense in the case of the drop-cone procedure. There is a need for a universal specification for the determination of the consistency limits. 

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