纳米SiO2气凝胶水泥基复合材料中水的形态分布规律研究

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发布时间：2020-01-06 00:00:00

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纳米SiO2气凝胶水泥基复合材料中水的形态分布规律研究

Study on moisture morphology distribution of nano-SiO2 aerogel cement based composites

2024年第11期

纳米SiO2气凝胶；水泥基复合材料；T2谱；水分分布；吸水

Nano-SiO2 aerogel; Cement based composite; T2 spectrum; Moisture distribution; Water absorption

2024年第11期

10.19761/j.1000-4637.2024.11.012.05

国家自然科学基金面上项目（51976205）。

周暘1，黄冬梅1，*，丰桢敏1，2，杨建红1

1.中国计量大学能源环境与安全工程学院，浙江杭州 310018；2.服务型制造研究院，浙江杭州 311199

周暘1，黄冬梅1，*，丰桢敏1，2，杨建红1

周暘,黄冬梅,丰桢敏,等.纳米SiO2气凝胶水泥基复合材料中水的形态分布规律研究[J].混凝土与水泥制品,2024(11):12-16.

ZHOU Y,HUANG D M,FENG Z M,et al.Study on moisture morphology distribution of nano-SiO2 aerogel cement based composites[J].China Concrete and Cement Products,2024(11):12-16.

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1000

英文名 : Study on moisture morphology distribution of nano-SiO2 aerogel cement based composites

刊期 : 2024年第11期

关键词 : 纳米SiO2气凝胶；水泥基复合材料；T2谱；水分分布；吸水

Key words : Nano-SiO2 aerogel; Cement based composite; T2 spectrum; Moisture distribution; Water absorption

刊期 : 2024年第11期

DOI : 10.19761/j.1000-4637.2024.11.012.05

文章编号 :

基金项目 : 国家自然科学基金面上项目（51976205）。

作者 : 周暘1，黄冬梅1，*，丰桢敏1，2，杨建红1

单位 : 1.中国计量大学能源环境与安全工程学院，浙江杭州 310018；2.服务型制造研究院，浙江杭州 311199

周暘1，黄冬梅1，*，丰桢敏1，2，杨建红1

周暘,黄冬梅,丰桢敏,等.纳米SiO2气凝胶水泥基复合材料中水的形态分布规律研究[J].混凝土与水泥制品,2024(11):12-16.

ZHOU Y,HUANG D M,FENG Z M,et al.Study on moisture morphology distribution of nano-SiO2 aerogel cement based composites[J].China Concrete and Cement Products,2024(11):12-16.

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摘要

参数

结论

参考文献

引用本文

摘要：为了研究纳米SiO₂气凝胶对水泥基复合材料水分分布机制的影响，采用LF-NMR技术对室温环境下不同掺量（0、5%、7%、10%）纳米SiO₂气凝胶水泥基复合材料（AIC）吸水30 min后的T2信号进行了测试，在真空饱和的条件下，采用孔隙体积内饱水度描述AIC吸水前后含水量空间变化。结果表明：AIC0、AIC5、AIC7、AIC10试件的T2谱最高峰的峰面积所占比例分别为83.0%、78.7%、79.3%、79.6%，掺入纳米SiO2气凝胶降低了最高峰的峰面积；当纳米SiO₂气凝胶掺量由0增至10%时，AIC试件的吸附水、毛细管水及孔隙水饱水度均减小；纳米SiO₂气凝胶能降低AIC的自由水存储性能。

Abstract: In order to investigate the effect of nano-SiO₂ aerogel on the water distribution mechanism of cement based composites, the T2 signals of cement based composites with different nano-SiO2 aerogel contents(0、5%、7%、10%) after 30 min of water absorption at room temperature environment were tested by LF-NMR technique. The spatial variation of water content before and after water absorption of AIC specimens was described using the degree of water saturation in the pore volume under vacuum saturation conditions. The results show that the percentage of peak area of the highest peak of T2 spectra of AIC0, AIC5, AIC7, and AIC10 is 83.0%, 78.7%, 79.3%, and 79.6%, respectively, and adding nano-SiO₂ aerogel reduces the peak area of the highest peak. When the content of nano-SiO₂ aerogel increases from 0 to 10%, the adsorption water, capillary water, and pore water saturation of AIC specimens all decrease. Nano-SiO₂ aerogel can reduce the free water storage performance of AIC.

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纳米SiO2气凝胶水泥基复合材料中水的形态分布规律研究

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