玻璃纤维增强水泥基材料组成优化设计与性能

doi:10.11896/cldb.18070194

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Abstract To obtain the high performance and good durability glass fiber reinforced cementitious composites (GRC), multi factor experimental design method (include: water-binder ratio, binder-sand ratio, content of glass fiber and supplementary cementitious materials) was used in this study to prepare a novel type of GRC based on long-term performance. The development of mechanical properties of GRC was evaluated, meanwhile, the hydration products and micro-structure of GRC was investigated by scanning electronic microscope (SEM) and X-ray powder diffraction (XRD). Test results showed that the optimal parameter of GRC prepared contained: water-binder ratio was 0.30—0.38; binder-sand ratio was 1∶0.5—1∶2; glass fiber content was 2% (volume content). The flexural strength of GRC prepared by plain Portland cement obviously declined after curing 28 d. However, the flexural strength of GRC which used the fly ash or silica fume as supplementary cementitious materials to replace part of Portland cement was improved at a long-term hydration process, because the fly ash and silica fume could be reacted with Ca(OH)₂ and effectively reduced the alkalinity of hydrated paste during the hydration process. Thus, the long-term flexural strength of GRC was stable by using fly ash or silica fume to prepare GRC.

Key words： glass fiber reinforced cementitious composites (GRC) alkali resistance glass fiber mechanical properties compositions design

Published: 19 June 2019

CLC number:

D430.45

Fund:This work was financially supported by the Research on GRC material mix design and hatch manufacturing technology for prefabricated cabin (SGTYHT/14-JS-188), National Natural Science Foundation of China (51678143), the Fundamental Research Funds for the Central Universities, Postgraduate Research ＆ Practice Innovation Program of Jiangsu Province (SJCX17_0024).

About author:: Wangtian Zhang, School of Materials Science and Engineering, Southeast University, master of engineering, focusing on the research of fiber reinforced cement-based materials.Yunsheng Zhang, School of Materials Science and Engineering, Southeast University, professor. His research areas include geopolymer materials,high performance and ultra high performance cement based composites, durabilityand service life prediction of concrete subjected to the action of combinedseveral deterioration factors.

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	ZHANG Wangtian
	ZHANG Yunsheng
	WU Zhitao
	LIU Naidong
	YUAN Difei

Cite this article:

ZHANG Wangtian,ZHANG Yunsheng,WU Zhitao, et al. Optimization Design and Properties of Glass Fiber Reinforced Cementitious Composites[J]. Materials Reports, 2019, 33(14): 2331-2336.

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http://www.mater-rep.com/EN/10.11896/cldb.18070194 OR http://www.mater-rep.com/EN/Y2019/V33/I14/2331

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