Research on Influence of Water-Cement Ratio on Reinforcement Effect for Permeation Grouting in Sand Layer
Research on Influence of Water-Cement Ratio on Reinforcement Effect for Permeation Grouting in Sand Layer
复制标题
水灰比对砂层渗透注浆加固效果的影响研究
DOI：
10.1155/2020/5329627
复制
发表时间：
2020-03
影响因子：
--
通讯作者：
Qingsong Zhang
中科院分区：
文献类型：
--
作者：
Zhipeng Li;Lianzhen Zhang;Yuntian Chu;Qingsong Zhang
为研究砂层渗透注浆加固效果，研制了一套注浆试验装置，该装置由动力装置、承压浆液罐和多个试验架组成。选取抗压强度、变形模量和渗透系数作为注浆加固效果的评价指标。测定了不同水灰比水泥浆和养护时间下的注浆加固效果。在实验室条件下，得到了渗透灌浆加固效果与水灰比和养护时间的定量关系式。结果表明，浆液水灰比对注浆加固效果有明显影响。灌浆体的力学性能和抗渗性能与水灰比呈负相关。灌浆体在单轴压缩过程中有两种不同的破坏模式：低水灰比时的整体破坏模式和高水灰比时的局部破坏模式。当高水灰比的水泥浆渗透到砂层中时，会出现泌水现象，导致灌浆体性能不均匀，灌浆体上部性能较低，下部性能较高。
In order to study permeation grouting reinforcement effect in the sand layer, a set of grouting test device is developed, which consists of a power device, a pressure-bearing slurry tank, and several test frames. Compressive strength, deformation modulus, and permeability coefficient are selected to be the evaluation index of grouting reinforcement effect. Grouting reinforcement effect under different water-cement ratio of cement slurry and curing time were measured. Eventually, under laboratory conditions, fitting formulas have been obtained which describe the quantitative relationship between reinforcement effect of permeation grouting and water-cement ratio and curing time. Results show that water-cement ratio of slurry has obvious effect on grouting reinforcement effect. Mechanical performance and impermeability of the grouted body are negative-correlated with water-cement ratio. There are two different destruction patterns for the grouted body in uniaxial compression process: global destruction pattern at low water-cement ratio and local destruction pattern at high water-cement ratio. If cement slurry at high water-cement ratio is permeated into the sand layer, water bleeding phenomena will appear and lead to inhomogeneous performance of the grouted body, with lower performance in the upper part and higher performance in the lower part of the grouted body.
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多孔介质中水泥浆的强度和过滤稳定性
影响因子：
6.9
作者：
Zilong Zhou;Xin Cai;Xueming Du;Shanyong Wang;Dan Ma;Haizhi Zang
通讯作者：
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影响因子：
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DOI：
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发表时间：
2016-10
影响因子：
0.7
作者：
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通讯作者：
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DOI：
10.1002/nag.785
发表时间：
2009-11-01
影响因子：
4
作者：
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通讯作者：
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DOI：
10.1016/0148-9062(85)92155-2
发表时间：
1985-05
期刊：
--
影响因子：
--
作者：
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通讯作者：
B. Brady;E. T. Brown