Journal of Dalian Maritime University >
2017 , Vol. 43 >Issue 4: 117 - 121
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2017.04.017
Experimental study on hydrate properties of elevated temperature sintering mucky soil
Received date: 2017-06-09
Revised date: 2017-07-18
Online published: 2017-07-18
To determine the feasibility of applying high temperature sintering mucky soil treatment into foundation pit support, the hydrolysis test of sintered mucky soil was conducted to study its change law of compressive strength under different sintering temperature and time, and the mechanism of the experiment was briefly analyzed. Experiment results show that: (1) With the hydrolysis time increasing, the single-axial compressive strength of high temperature sintering mucky soil decreases gradually, and finally stabilizes. (2) Applying high temperature sintering mucky soil into foundation pit support acquires satisfactory effect. The most reasonable sintering temperature and time is 800℃, 3 hours respectively. The uniaxial compressive strength of the treated soil decreases by about 28% and remains at over 3 MPa after hydrolysis.(3)The high temperature sintering mucky soil makes the microstructure compact and produces Ca2SiO4 and so on, which makes the strength increase. Some of the material after hydrolysis can maintain its own structure, so the strength will eventually become stable. In summary, it is easy to treat mucky soil with high temperature sintering method, which is significant for saving project cost and shortening construction period.
LIU Yun-zhuang , YI Nan-gai , ZHONG Lin , ZHANG Dong . Experimental study on hydrate properties of elevated temperature sintering mucky soil[J]. Journal of Dalian Maritime University, 2017 , 43(4) : 117 -121 . DOI: 10.16411/j.cnki.issn1006-7736.2017.04.017
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