International Journal of Information Science and Computing
Year : 2014, Volume : 1, Issue : 1
First page : ( 1) Last page : ( 24)
Print ISSN : 2348-7437.

A Study on Geosynthetic Application for Sustainable Construction

Jain Rajesh Kumar

Bharat Group of Colleges, Punjab, India. Email: rajmeerutcity@gmail.com

Abstract

Geosynthetics have been widely used as construction materials for soil reinforcement in civil engineering. RAP samples suggest that the proportion of particle close to 0.425 mm was quite large. Therefore material passing the 0.425 are non plastic. The required tensile strength of the geosynthetic is controlled by the vertical spacing of the layers. Reduction factors are used to account for installation damage, chemical and biological conditions. A minimum thickness of 150 mm of fill must be maintained between the tracks of the construction equipment and the reinforcement at all times. The RAP showed particle size less than 37.5 mm and may have contributed to the high densities. The maximum size, mean size (d₅₀), coefficient of curvature (Cc), and coefficient of uniformity (C_u) of the RAP aggregate were found to be 12.5 mm, 2.0 mm, 0.85, and 8.33, respectively. The high value of specific gravity was attributed to the porosity of the material. The average viscosity of the asphalt binder was 1.408 Pa-s. The kinematic viscosity of the asphalt binder at 135°C was found to be 1.408 Pa-s. Air voids can not be eliminated altogether by compaction but they generally be reduced to 5%. The CBR of RAP at the moisture content corresponding to 98% was found to be 24.8%. Average minimum and maximum index densities were found to be 1.415 g/cm3 and 1.740 g/cm3 respectively. The maximum dry density of the RAP was 1.96 g/cm3, which corresponds to the optimum moisture content (OMC) of 6.6%. Addition of RAP increased the resilient modulus properties of DGABC. The average interaction coefficient and interface efficiencies of cohesion and friction angle between geocell and RAP were found to be 0.477, 0.292, and 0.853, respectively. The geocell-RAP interface cohesion and friction angle were found to be 8.95 kPa and 11.06° respectively. In addition, the cohesion and friction angle of RAP were found to be 30.68 kPa and 12.90° respectively.

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Keywords

Geosynthetic, Polyethylene Polymer, Safety factor, Compacrion CBR, Shear stress, Triaxial compression.

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