A Study on Interfacial Shear Parameters of Rock Flour with Geotextile from Modified Direct Shear Box and Pull out Test

S.G. Narayana Reddy; Prof. C.N.V Satyanarayana Reddy; Md Shakeel Abid

CALL FOR PAPERS : Feb-2026

Submission Last Date

25-Feb-26

Submit Manuscript Online

FOR AUTHORS

FOR REVIEWERS

ARCHIEVES

DOWNLOADS

Open Access

A Study on Interfacial Shear Parameters of Rock Flour with Geotextile from Modified Direct Shear Box and Pull out Test

Author(s):

S.G. Narayana Reddy , KAKATIYA INSTITUTE OF TECHNOLOGY & SCIENCE; Prof. C.N.V Satyanarayana Reddy, Andhra University; Md Shakeel Abid, KAKATIYA INSTITUTE OF TECHNOLOGY & SCIENCE

Keywords:

Rock Flour, Shear parameters, Pullout test, Modified shear box test

Abstract:

At present, rock flour is used as a basement filling material and as alternate to fine aggregate in concrete making. The rock flour of its abundant availability at rock crushing plant and its granular character can be assessed for its usage as better engineering material particularly in reinforced soil constructions by evaluating with reinforcing materials. The grain size, strength and frictional properties of rock flour are to be evaluated for using it as fill material in reinforced soil constructions. In present study, laboratory investigations are carried out to establish the properties of rock flour and then to evaluate its interfacial friction characteristics with geotextiles. Both Modified direct shear test and Pullout test are conducted using rock flour and geotextiles (woven and non-woven) to evaluate interfacial shear parameters in dry and wet condition. The geology of the parent rock is also studied for interfacial shear parameters of strength characteristics of rock flour. The study revealed better interaction of rock flour with non- woven geotextile compared to woven geotextile. The interfacial shear parameters determined from pull out tests are observed to be less (30-40%) compared to the values obtained from modified direct shear box tests.