纳米SiO2对掺膨胀剂碱矿渣砂浆力学及收缩性能的影响

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发布时间：2020-01-06 00:00:00

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纳米SiO2对掺膨胀剂碱矿渣砂浆力学及收缩性能的影响

Effect of Nano-SiO2 on Mechanical and Shrinkage Properties of Alkali-activated Slag Mortar with Expansion Agent

2021年第10期

碱激发矿渣；纳米SiO2；膨胀剂；抗压强度；收缩性能

Alkali-activated slag; Nano-SiO2; Expansion agent; Compressive strength; Shrinkage performance

2021年第10期

10.19761/j.1000-4637.2021.10.091.04

国家自然科学基金项目（52008003）；安徽省重点研究与开发项目（201904a07020081）。

田翔，陈佩圆，娄星，李进

安徽理工大学土木建筑学院，安徽淮南 232001

田翔，陈佩圆，娄星，李进

田翔,陈佩圆,娄星,等.纳米SiO2对掺膨胀剂碱矿渣砂浆力学及收缩性能的影响[J].混凝土与水泥制品,2021(10):91-94.

TIAN X,CHEN P Y,LOU X,et al.Effect of Nano-SiO2 on Mechanical and Shrinkage Properties of Alkali-activated Slag Mortar with Expansion Agent[J].China Concrete and Cement Products,2021(10):91-94.

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摘要：研究了纳米SiO2掺量对掺膨胀剂碱矿渣砂浆抗压强度、自收缩、干燥收缩和孔隙率的影响。结果表明：膨胀剂的掺入有助于减少碱激发矿渣砂浆的自收缩和干燥收缩，但会显著降低早期强度；掺入2%纳米SiO2可基本补偿由于掺入膨胀剂造成的强度损失，且对碱矿渣砂浆自收缩和干燥收缩的影响较小；适量纳米SiO2的掺入可显著降低掺膨胀剂碱矿渣砂浆的孔隙率。 Abstract: The effects of nano-SiO2 content on the compressive strength, self-shrinkage, dry shrinkage and porosity of the alkali-activated slag mortar(AASM) with expansion agent were analyzed. The results show that the addition of expansive agent can reduce the self-shrinkage and dry shrinkage of AASM, but can significantly reduce its early strength. The addition of 2% nano-SiO2 can basically compensate the strength loss caused by the addition of expansive agent, and has little effect on the self-shrinkage and dry shrinkage of AASM. Appropriate amount of nano-SiO2 can significantly reduce the porosity of AASM with expansion agent.

英文名 : Effect of Nano-SiO2 on Mechanical and Shrinkage Properties of Alkali-activated Slag Mortar with Expansion Agent

刊期 : 2021年第10期

关键词 : 碱激发矿渣；纳米SiO2；膨胀剂；抗压强度；收缩性能

Key words : Alkali-activated slag; Nano-SiO2; Expansion agent; Compressive strength; Shrinkage performance

刊期 : 2021年第10期

DOI : 10.19761/j.1000-4637.2021.10.091.04

文章编号 :

基金项目 : 国家自然科学基金项目（52008003）；安徽省重点研究与开发项目（201904a07020081）。

作者 : 田翔，陈佩圆，娄星，李进

单位 : 安徽理工大学土木建筑学院，安徽淮南 232001

田翔，陈佩圆，娄星，李进

田翔,陈佩圆,娄星,等.纳米SiO2对掺膨胀剂碱矿渣砂浆力学及收缩性能的影响[J].混凝土与水泥制品,2021(10):91-94.

TIAN X,CHEN P Y,LOU X,et al.Effect of Nano-SiO2 on Mechanical and Shrinkage Properties of Alkali-activated Slag Mortar with Expansion Agent[J].China Concrete and Cement Products,2021(10):91-94.

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摘要

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结论

参考文献

引用本文

摘要：研究了纳米SiO₂掺量对掺膨胀剂碱矿渣砂浆抗压强度、自收缩、干燥收缩和孔隙率的影响。结果表明：膨胀剂的掺入有助于减少碱激发矿渣砂浆的自收缩和干燥收缩，但会显著降低早期强度；掺入2%纳米SiO₂可基本补偿由于掺入膨胀剂造成的强度损失，且对碱矿渣砂浆自收缩和干燥收缩的影响较小；适量纳米SiO₂的掺入可显著降低掺膨胀剂碱矿渣砂浆的孔隙率。

Abstract: The effects of nano-SiO₂ content on the compressive strength, self-shrinkage, dry shrinkage and porosity of the alkali-activated slag mortar(AASM) with expansion agent were analyzed. The results show that the addition of expansive agent can reduce the self-shrinkage and dry shrinkage of AASM, but can significantly reduce its early strength. The addition of 2% nano-SiO₂ can basically compensate the strength loss caused by the addition of expansive agent, and has little effect on the self-shrinkage and dry shrinkage of AASM. Appropriate amount of nano-SiO₂ can significantly reduce the porosity of AASM with expansion agent.

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