Assessment of glass fiber-reinforced polyester pipe powder in soil improvement
Baki BAĞRIAÇIK , Ahmet BEYCIOĞLU , Szymon TOPOLINSKI , Emre AKMAZ , Sedat SERT , Esra Deniz GÜNER
Front. Struct. Civ. Eng. ›› 2021, Vol. 15 ›› Issue (3) : 742 -753.
Assessment of glass fiber-reinforced polyester pipe powder in soil improvement
This study investigates the use of glass fiber-reinforced polyester (GRP) pipe powder (PP) for improving the bearing capacity of sandy soils. After a series of direct share tests, the optimum PP addition for improving the bearing capacity of soils was found to be 12%. Then, using the optimum PP addition, the bearing capacity of the soil was estimated through a series of loading tests on a shallow foundation model placed in a test box. The bearing capacity of sandy soil was improved by up to 30.7%. The ratio of the depth of the PP-reinforced soil to the diameter of the foundation model (H/D) of 1.25 could sufficiently strengthen sandy soil when the optimum PP ratio was used. Microstructural analyses showed that the increase in the bearing capacity can be attributed to the chopped fibers in the PP and their multiaxial distribution in the soil. Besides improving the engineering properties of soils, using PP as an additive in soils would reduce the accumulation of the industrial waste, thus providing a twofold benefit.
shallow foundation / sandy soil / bearing capacity / soil improvement / pipe powder
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The Author(s) 2021. This article is published with open access at link.springer.com and journal.hep.com.cn
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