掺石灰石粉矿渣水泥砂浆的孔结构与抗渗性能

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发布时间：2020-01-06 00:00:00

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掺石灰石粉矿渣水泥砂浆的孔结构与抗渗性能

Pore structure and impermeability of slag cement mortar mixed with limestone powder

2024年第10期

石灰石粉；矿渣水泥基材料；砂浆；孔结构；抗渗性能

Limestone powder; Slag cement-based material; Mortar; Pore structure; Impermeability

2024年第10期

10.19761/j.1000-4637.2024.10.079.05

国家自然科学基金项目（52178232）；浙江省自然科学基金资助项目（LY23E080010）。

蒋志律1，杨涛1，杨梦盈1，付传清1，李强2

1.浙江工业大学土木工程学院，浙江杭州 310023；2.浙江水利水电学院建筑工程学院，浙江杭州310018

蒋志律1，杨涛1，杨梦盈1，付传清1，李强2

蒋志律,杨涛,杨梦盈,等.掺石灰石粉矿渣水泥砂浆的孔结构与抗渗性能[J].混凝土与水泥制品,2024(10):79-83.

JIANG Z Y,YANG T,YANG M Y,et al.Pore structure and impermeability of slag cement mortar mixed with limestone powder[J].China Concrete and Cement Products,2024(10):79-83.

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摘要：为了研究石灰石粉对矿渣水泥砂浆抗渗性能的影响，进行了不同掺量石灰石粉矿渣水泥砂浆的抗压强度、孔结构与水渗透系数试验，根据压汞法得到了砂浆的孔隙率和孔径分布，分析了石灰石粉对临界孔径和阈值孔径大小的影响，通过GEMS热力学模拟分析了不同石灰石粉掺量下的砂浆水化产物含量的变化，运用Katz-Thompson方程建立了特征孔径与水渗透系数之间的关系。结果表明：随着石灰石粉掺量的增加，砂浆的临界孔径减小，抗压强度降低；当石灰石粉掺量达到20%时，矿渣水泥砂浆的抗渗性能仍优于纯水泥砂浆组。 Abstract: In order to study the effect of limestone powder on the impermeability of slag cement mortar, tests were conducted on the compressive strength, pore structure, and water permeability coefficient of slag cement mortar with different contents of limestone powder. The porosity and pore size distribution of the mortar were obtained by mercury intrusion porosimetry, and the influence of limestone powder on the critical pore size and threshold pore size was analyzed. The changes in the hydration product content of the mortar under different contents of limestone powder were analyzed by GEMS thermodynamic simulation. The relationship between characteristic pore size and water permeability coefficient was established using the Katz Thompson equation. The results show that with the increase of limestone powder content, the critical pore size of mortar decreases and the compressive strength decreases. When the content of limestone powder reaches 20%, the impermeability of slag cement mortar is still better than that of pure cement mortar group.

英文名 : Pore structure and impermeability of slag cement mortar mixed with limestone powder

刊期 : 2024年第10期

关键词 : 石灰石粉；矿渣水泥基材料；砂浆；孔结构；抗渗性能

Key words : Limestone powder; Slag cement-based material; Mortar; Pore structure; Impermeability

刊期 : 2024年第10期

DOI : 10.19761/j.1000-4637.2024.10.079.05

文章编号 :

基金项目 : 国家自然科学基金项目（52178232）；浙江省自然科学基金资助项目（LY23E080010）。

作者 : 蒋志律1，杨涛1，杨梦盈1，付传清1，李强2

单位 : 1.浙江工业大学土木工程学院，浙江杭州 310023；2.浙江水利水电学院建筑工程学院，浙江杭州310018

蒋志律1，杨涛1，杨梦盈1，付传清1，李强2

蒋志律,杨涛,杨梦盈,等.掺石灰石粉矿渣水泥砂浆的孔结构与抗渗性能[J].混凝土与水泥制品,2024(10):79-83.

JIANG Z Y,YANG T,YANG M Y,et al.Pore structure and impermeability of slag cement mortar mixed with limestone powder[J].China Concrete and Cement Products,2024(10):79-83.

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参考文献

引用本文

Abstract: In order to study the effect of limestone powder on the impermeability of slag cement mortar, tests were conducted on the compressive strength, pore structure, and water permeability coefficient of slag cement mortar with different contents of limestone powder. The porosity and pore size distribution of the mortar were obtained by mercury intrusion porosimetry, and the influence of limestone powder on the critical pore size and threshold pore size was analyzed. The changes in the hydration product content of the mortar under different contents of limestone powder were analyzed by GEMS thermodynamic simulation. The relationship between characteristic pore size and water permeability coefficient was established using the Katz Thompson equation. The results show that with the increase of limestone powder content, the critical pore size of mortar decreases and the compressive strength decreases. When the content of limestone powder reaches 20%, the impermeability of slag cement mortar is still better than that of pure cement mortar group.

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掺石灰石粉矿渣水泥砂浆的孔结构与抗渗性能

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