MATEC Web Conf.
Volume 280, 2019The 5th International Conference on Sustainable Built Environment (ICSBE 2018)
|Number of page(s)||7|
|Published online||08 May 2019|
Effect of urease enzyme and clay mixture in shear strength properties of sand
1 Undergraduate student, Universitas Indonesia, Department of Civil Engineering, 16424 Depok, Indonesia
2 Lecturer, Universitas Indonesia, Department of Civil Engineering, 16424 Depok, Indonesia
3 Researcher, Indonesian Institute of Sciences (LIPI), Research Center of Biotechnology, 16911 Cibinong, Indonesia
* Corresponding author: firstname.lastname@example.org
The utilization of environmentally friendly materials in soil stabilization has grown in the last decade. Recent studies have shown that adding urease enzyme in calcium chloride and urea solution will improve the shear strength properties of sand. The purpose of this paper is to introduce the usage of clay to improve the performance of calcite produced in the mixture of urease enzyme and calcium chloride-urea solution. This mixture is then mixed manually with the clay-sand mixture and its effect is further tested using a direct shear test conducted at every two weeks of curing. The test is carried out to determine the development of the shear strength properties of the stabilized sand. The results from the test show that there is a rise in the cohesion value of the sand due to the addition of the clay mixture.
© The Authors, published by EDP Sciences, 2019
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