磨细石灰岩-水玻璃系统灌浆材料的性能及其影响因素

 研究了白云质石灰岩 水玻璃灌浆材料的粘度、凝胶时间、结石体强度、固砂强度等性能，结果表明：浆材粘度小，流动性好，凝固时间在6～20 h内可调，40℃养护下结石体强度达1～3 MPa，固砂强度达2～6 MPa。从石灰岩角度研究了不同品质石灰岩、石灰岩细度、不同液固比等对浆材固砂强度的影响，结果表明：白云质石灰岩中MgO含量越高，细度越大，浆材固砂强度越高。以石灰岩∶水玻璃∶水=1∶0.6∶0.1为配方(重量比)的浆材，综合性能好，可实现单液灌浆。

Properties of ground limestone-water glass grout material and their affecting factors

The properties of dolomite limestone water glass grout material were studied, including cohesion, setting time, calculus strength and mortar strength. Results showed that its flow ability is good, setting time can b e controlled from 6 hours to 20 hours with different ratios of liquid to solid , calculus strength and solidified mortar strength of limestone water glass samples(4 cm.4 cm.16 cm) cured at 40℃ can reach 1～3 MPa and 2～6 MPa respectively. The effects of various kinds of lime stones ,their sizes of grains, various ratios of liquid to solid on mortar strength were discussed. Research results showed that the higher the MgO content is and finer the grain sizes ,the higher the mortar strength will be. When limestone:water glass :water is 1∶0.6∶0.1(weight rat io of formula),this grout with good comprehensive properties can be obtained and can practise single liquid grouting.