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The Application of Superfine Sulphoaluminate Cement-based Grouting Material

Author: CaiBingTuan
Tutor: GuanXueMao
School: Henan Polytechnic University
Course: Mining Engineering
Keywords: Grouting The ultrafine sulphoaluminate cement Grouting parameters Construction technology
CLC: TD265.4
Type: Master's thesis
Year: 2011
Downloads: 192
Quote: 1
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Abstract


Organic grouting material as consolidation of soft coal and rock material , can effectively control the soft coal and rock spalling , but their high price to have had a great impact on the economic benefits of the coal mine . Therefore, for superior performance, low-cost ultra - fine sulfur aluminate cement-based grouting material in the soft coal or rock has a very important practical significance . First, a pilot study on the ultrafine sulphoaluminate cement-based grouting material ratio : selection of anhydrite grouting material compressive strength was significantly higher than that of dihydrate gypsum used in the same dosage Note pulp material age compressive strength ; gypsum content in less than 40% , the lime dosage of 5% of the compressive strength of the grouting material is greater than the lime dosage for 10% of the grouting material compressive strength, gypsum dosage more than 40% , lime content greater than 10% of the compressive strength of the grouting material lime dosage of 5% of the compressive strength of the grouting material ; sodium bentonite can improve slurry suspension, and the grouting material setting time shortening , BR early strength agent can significantly improve the early strength of the grouting material . Secondly, also the the grouting material flow and consolidation grouting material coal strength research , the study found that after of consolidation coal 2h age of ultra - fine sulfur aluminate cement-based grouting material of compressive strength higher than age of organic the grouting material consolidation coal compressive strength . Again , the grouting material in the soft coal and rock in key research on site grouting test , the ultrafine sulphoaluminate cement-based grouting material has good Note : in 5MPa grouting pressure nature , close to the grouting material consumption and organic Remy material ; displacement observation before and after coal and rock grouting reinforcement roadway , on drilling peep and ultrasonic testing : grouting reinforcement , compaction, coal crushing coal and rock gap increase in body integrity and stability ; no significant difference in the effect of ultra - fine sulfur aluminate cement-based grouting material with organic Remy grouting material grouting . Finally, the analysis of the economy on the ultrafine sulphoaluminate cement-based grouting material drawn: replace the organic grouting material to the ultrafine sulphoaluminate cement-based grouting material , you can make the grouting costs reduced by 70 % above , the economy is substantial.

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CLC: > Industrial Technology > Mining Engineering > Mine design and construction > Underground construction > Roadway special construction method > Grouting
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