首页|玻化微珠-水泥/水玻璃隔热注浆材料正交试验

玻化微珠-水泥/水玻璃隔热注浆材料正交试验

Orthogonal Experiment of Glazed Hollow Bead-Cement/Sodium Silicate Thermal Insulation Grouting Material

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目的 为解决深部矿井开采出现的高温热害问题,提出以玻化微珠为掺合料的水泥/水玻璃注浆材料进行隔热支护的新思路.方法 采用正交试验的方法,研究水灰比(因素A)、玻化微珠掺量(因素B)、水玻璃与水泥浆体积比(因素C)3种因素对注浆材料性能的影响.结果 获得最优配比为A1B3C3,90d抗压强度为20.2MPa,即水灰比为0.6,玻化微珠掺量为45kg/m3,水玻璃与水泥浆体积比为0.6.3种因素对抗压强度的影响顺序为水灰比影响最大,其次是水玻璃与水泥浆体积比,最后是玻化微珠掺量;对于胶凝时间,水玻璃与水泥浆体积比有较为显著影响,玻化微珠掺量、水灰比影响较小;对于结石率,玻化微珠掺量和水灰比影响显著,其中后者影响更为显著,最后是水玻璃与水泥浆体积比,结石率最大可接近.结论 该种新型隔热注浆材料强度大、结石率大,能够满足井下注浆施工的要求,对于井巷主动隔热环境控制有一定参考.
Objective In view of the problem of high temperature heat damage in deep coal mine,the new idea of cement-water glass liquid grouting material with glazed hollow bead as admixture was put forward.Methods With orthogonal test method,the effects of three factors on the properties of grouting materials were studied,including water-cement ratio(Factor A),glazed hollow bead content(Factor B),and volume ratio of sodium silicate slurry to cement(Factor C).Results The optimal ratio was A1B3C3 with the highest compressive strength of 20.2MPa,i.e.the water-cement ratio of 0.6,glazed hollow bead content of 45kg/m3,and the volume ratio of sodium sili-cate slurry to cement of 0.6.The influence order of three factors on the compressive strength under 90-day curing ages was the water-cement ratio(the greatest),the volume ratio of sodium silicate slurry to cement and the glazed hollow bead content.For the gelling time,the volume ratio of sodium silicate slurry to cement had a signifi-cant impact,and the effect of glazed hollow bead content and water-cement ratio was small.For the concretion rate,the glazed hollow bead content and water-cement ratio had a significant impact,the later having a significant effect.The concretion rate can be close to 1 at most.Conclusion This new type of thermal insulation grouting ma-terials has high strength and concretion rate,which can meet the requirements grouting construction and has cer-tain reference for active thermal environment control of mine.

grouting materialglazed hollow beadorthogonal teststrengthgelling timeconcretion rate

姚韦靖、刘涛、蔡海兵、许小健、马祥、钟能

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安徽理工大学土木建筑学院,安徽 淮南 232001

芜湖市勘察测绘设计研究院有限责任公司博士后工作站,安徽芜湖 241000

安徽理工大学矿山建设工程安徽省高校重点实验室,安徽 淮南 232001

注浆材料 玻化微珠 正交试验 强度 胶凝时间 结石率

矿山建设工程安徽省高校重点实验室开放基金资助项目安徽省住房城乡建设科学技术计划项目安徽省研究生创新创业实践项目国家级大学生创新创业训练计划项目

GXZDSYS20221062023-YF0482022cxcysj112202210361031

2024

10.3969/j.issn.1672-1098.2024.03.007

安徽理工大学学报(自然科学版)
安徽理工大学

安徽理工大学学报(自然科学版)

影响因子：0.331
ISSN：1672-1098
年,卷(期)：2024.44(3)