stabilization of river terraces and natural soil slopes in rangelands by means of tree roots as a reinforcement agent is an environmental adopted method which needs to be developed. in this research a series of tests was carried out on soil blocks containing willow roots and without roots using a large scale in situ direct shear test apparatus. the results were analyzed based on direct shear th...

Expansive soil is collected near the mirchi yard gutur district, where NH 5 expansion is taking place. This study revealed that the fiber reinforcement improves the CBR values in admixture stabilized soil. In the present work, an attempt is made to compare the quantity of the earth required for the sub grade with and without fly ash stabilization, for 1.5% of fiber and 15 % of fly ash the thick...

This research was performed to investigate the behavior of strip footing on geosynthetic reinforced sandy soil and to study the effect of different parameters contributing to their performance using laboratory model tests. The parameters investigated in the study included top layer spacing (u), width of reinforcement (b), vertical spacing between layers (s) and number of reinforcement layers (N...

In order to design civil structures that are supported by soils, the shear strength parameters of soils are required. Due to the large particle size of coarse-grained soils, large direct shear tests should be performed. In this study, large direct shear tests on three types of coarse grained soils (4.5 mm, 7.9 mm, and 15.9 mm) were performed to evaluate the effects of particle size on the shear...

In difficult soil conditions, engineers sometimes choose to combine reinforced soil and spread footings instead of deep foundations. Among the available techniques for soil reinforcement, vibro stone columns are frequently used to reduce the liquefaction risk, improve the soil properties and improve the overall seismic performance. While there are different models available to evaluate the bear...

This project was undertaken to study the biodegradability of PLA-KF biocomposite in different conditions; soil burial and immersion in water. The samples were buried in soil for 40 days to investigate the degradability of biocomposites. As for water absorption tests, the samples were immersed in three different types of water which were river water (pH 6), tap water (pH 7) and sea water (pH 7.5...