Open AccessResearch on the Effect of Urease on the Energy Absorption in Shanghai Clay by Unconfined Compressive Test
Author(s) -
Jili Qu,
Ke Xiong
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/719/4/042060
Subject(s) - urease , compressive strength , absorption (acoustics) , chemistry , geotechnical engineering , materials science , mathematics , composite material , engineering , enzyme , biochemistry
Urease was attempted to improve the quality of soil as a novel material rising in recent years. The unconfined compressive tests (UCT) have been carried out on soils mixed with urease at a series of concentration. The unconfined compressive strength (UCS), energy absorption (E i ), cumulative energy absorption (E i total ) of 4 types of samples was also analyzed to evaluate the effect of reinforcement. Results from tests show that a certain concentration of urease has a positive effect on UCS and E i of the clay, and it appeared best with the concentration of 3g/L. Urease of 4g/L achieved the maximum value in energy absorption within certain strain range. Conclusion is differed for E i total as the values of samples mixed with urease are all decreased compared to control sample. It is important for civil engineers to understand the stabilizing mechanism of urease for design and construction of civil engineering project.