文献类型：期刊文献

中文题名：原状稻壳灰及磨细灰对水泥胶砂强度和微观结构的影响

英文题名：Effect of undisturbed rice husk ash and ground ash on strength and microstructure of cement mortar

作者：杨一凡[1];何智海[2]

机构：[1]陕西省高性能混凝土工程实验室,渭南714000;[2]绍兴文理学院土木工程学院,312000

年份：2019

卷号：0

期号：10

起止页码：92

中文期刊名：混凝土与水泥制品

外文期刊名：China Concrete and Cement Products

收录：北大核心2017、北大核心

基金：国家自然科学基金青年科学项目(51602198);绍兴文理学院学生科技创新重点项目;陕西省高性能混凝土工程实验室开放基金课题资助项目(SHPC201707)

语种：中文

中文关键词：原状稻壳灰;胶砂;强度;微观结构;粉磨

外文关键词：Rice husk ash without processing;Cement mortar;Strength;Microstructure;Grind

中文摘要：针对当前原状稻壳灰储量大,难以资源化利用的困境,研究了原状稻壳灰及其粉磨对水泥胶砂强度的影响,结合扫描电镜和氮吸附法分析其影响机理,同时比较其与粉煤灰对胶砂性能的影响。结果表明,原状稻壳灰显著降低了水泥胶砂强度,且随着其掺量的增加,其降低幅度越来越大;原状稻壳灰粉磨极大地增加了胶砂强度,与基准胶砂强度相近,大于粉煤灰胶砂;原状稻壳灰劣化了胶砂内部结构,且随着其掺量地增加,其内部结构越来越疏松多孔;原状稻壳灰粉磨有利于改善细化其内部孔结构。

外文摘要：At present, there are large reserves of rice husk ash without processing which is difficult to be utilized as resource, so the effect of rice husk ash without processing and its grind product on the strength of cement mortar was studied, and the mechanism was analyzed and revealed by the scanning electron microscopy and nitrogen adsorption method, which was also compared with the effect of fly ash. The results indicate that rice husk ash without processing obviously reduces the strengths of cement mortar, and with the increase of its content, the reduction is larger and larger. However, the grind product of rice husk ash without processing greatly increases the strengths of cement mortar, close to those of the control mortar and more than those of cement mortar containing fly ash. Rice husk ash without processing degrades the internal structure of cement mortar, which is looser and looser with the increase of its content. The grind product of rice husk ash without processing is beneficial to refining and improving the internal pore structure.