| （超）细水泥在压滤作用下的浆液性能研究 |
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| 引用本文： | 黄立维,王克祥,黄纪村,邢占清.（超）细水泥在压滤作用下的浆液性能研究[J].水利与建筑工程学报,2021,0(2):155-160. |
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| 作者姓名： | 黄立维 王克祥 黄纪村 邢占清 |
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| 作者单位： | 1．中国水利水电科学研究院，北京100038；2．北京中水科工程集团有限公司，北京100040；3．中国三峡建设管理有限公司，北京100038； |
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| 基金项目： | 中国长江三峡集团有限公司科研项目(BHT/0772);中国水科院基本科研专项(EM0145C092018;EM0145B462016)。 |
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| 摘 要： | （超）细水泥浆液在高灌浆压力作用下的流动性能和强度指标是灌浆设计中水灰比、浆液级配、屏浆时间等施工参数选择的重要依据，也是评价灌后被灌体力学性能、耐久性等灌浆效果的重要因素。目前主要通过室内成模进行流动性能和抗压强度测试的方法进行相应研究，忽略了灌浆压力、排水条件、地质条件等因素的影响，不能真实反映灌浆过程中浆液在不同灌浆压力作用下流动性能和抗压强度。文章进行了室内压滤灌浆试验，得到了不同水灰比（超）细水泥浆液经过不同压力和时间压滤作用后的马氏漏斗粘度和结石体28ｄ抗压强度，并通过构建硬化浆体的结构模型，建立了（超）细水泥抗压强度的计算模型，计算了不同水灰比在不同压滤强度下的28ｄ抗压强度，可为灌浆工程（超）细水泥浆液配比优选、灌浆参数确定和灌浆效果评价提供依据。
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| 关 键 词： | （超）细水泥 压滤效应 压滤强度 |
Slurry Performance of Ultra Fine Cement Under Pressure Filtration |
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| HUANG Liwei,WANG Kexiang,HUANG Jicun,XING Zhanqing.Slurry Performance of Ultra Fine Cement Under Pressure Filtration[J].Journal of Water Resources Architectural Engineering,2021,0(2):155-160. |
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| Authors: | HUANG Liwei WANG Kexiang HUANG Jicun XING Zhanqing |
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| Affiliation: | (China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Beijing IWHR Corporation,Beijing 100040,China;China Three Gorges Projects Development Co.,Ltd.,Beijing 100038,China) |
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| Abstract: | The flow performance and strength index of ultra fine cement slurry under high grouting pressure is an important basis for the selection of construction parameters such as water cement ratio,slurry gradation and grouting screen time in grouting design,and also an important factor for evaluating the grouting effect such as mechanical properties and durability of the grouted body after grouting.At present,the corresponding research is mainly carried out through the indoor molding method for the flow performance and compressive strength test,which ignore the influence of grouting pressure,drainage conditions,geological conditions and other factors,therefore it can not truly reflect the flow performance and compressive strength of the slurry under different grouting pressure in the grouting process.In this paper,the indoor pressure filtration grouting test was carried out,and the Mahalanobis funnel viscosity and 28 d compressive strength of stone body of different water cement ratio ultra fine cement slurry after different pressure and time pressure filtration were obtained.Through the construction of the structure model of hardened slurry,the calculation model of ultra fine cement compressive strength was established,and the 28d pressure resistance of different water cement ratio under different pressure filtration strength was calculated.This research can provide the basis for optimizing the proportion of ultra-fine cement slurry and determining the grouting parameters and evaluating the grouting effect. |
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| Keywords: | ultra cement slurry pressure filtration property influence on strength of pressure filtration |
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