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高性能同步注浆材料专用外加剂的研制
收稿日期: 2013-07-29
修回日期: 2014-01-20
网络出版日期: 2014-03-20
Development of Additives Dedicated for Preparing Highperformance Simultaneous Grouting Material
Received date: 2013-07-29
Revised date: 2014-01-20
Online published: 2014-03-20
周少东 , 林文书 , 王红喜 , 许可 , 林建平 , 王彪 , 丁庆军 . 高性能同步注浆材料专用外加剂的研制[J]. 隧道建设, 2014 , 34(3) : 205 -211 . DOI: 10.3973/j.issn.1672-741X.2014.03.004
Bentonite, attapulgite clay, hypromellose cellulose, hydroxyethyl cellulose, FDN water reducer and polycarboxylate water reducer are used to be compounded with sodium gluconate to develop HMA additive, so as to prepare highperformance simultaneous grouting material on basis of mucks produced in shield tunneling. The test results show that the simultaneous grouting material with HMA additive has good workability, with the initial fluidity being up to 210 mm and the fluidity loss being very small; the simultaneous grouting material can prevent the segments from upfloating effectively; the simultaneous grouting material has a consistence value of around 10 cm, a bleeding rate of almost 0 and good resistance to water dispersion, and the simultaneous grouting material has a 28 d amphibious strength ratio up to more than 0.90. These results indicate that HMA additive is very suitable for preparing highperformance simultaneous grouting material.
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