Effect of increasing urease enzim concentration on shear strength properties sand clay biocementation

Himamul A'La, Wiwik Rahayu, Puspita Lisdiyanti

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Environmentally friendly soil improvement materials have been developed over the past decade. Utilization of biotechnology in biocementation for engineering geotechnical materials has been proven to increase the shear strength of soils. This biocementation method uses the urease enzyme mixed with a solution of urea and calcium chloride. The purpose of this study was to determine the effect of increasing the concentration of the urease enzyme in sand soil stabilized with biocementation and clay addition. This research will be compared with previous studies with a ratio of 1:4. Mixing is done manually and tested using direct shear and permeability testing. Curing time for the biocementation process is carried out for two and four weeks. The result of this test is the increase in shear strength of soil due to the addition of clay and the biocementation process of the urease enzyme.

Original languageEnglish
Article number012029
JournalIOP Conference Series: Earth and Environmental Science
Issue number1
Publication statusPublished - 12 Mar 2020
Event3rd International Conference on Eco Engineering Development, ICEED 2019 - Solo, Indonesia
Duration: 13 Nov 201914 Nov 2019


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