Experimental study on the properties of polyvinyl alcohol fiber reinforced cementitious composites with super early strength

被引：2
|
作者：
Zhu, Fawang [1 ]
Yang, Caiqian [1 ]
Miao, Mengyao [2 ]
机构：
[1] Southeast Univ, Sch Civil Engn, Key Lab Concrete & Prestressed Concrete Struct, Minist Educ, Nanjing 210096, Peoples R China
[2] Cent South Architectural Design Inst Co Ltd, Wuhan 430071, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 330卷
基金：
中国国家自然科学基金;
关键词：
Composite materials; Super early strength; Hydration heat; Mechanical property; Microstructure;
D O I：
10.1016/j.matlet.2022.133264
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new type of polyvinyl alcohol (PVA) fiber reinforced cementitious composites (RCC) was proposed with super early strength. The hydration heat of the PVA-RCC with various contents of retarder and superplasticizer was studied. The effects of retarder, water-binder ratio (w/b) and PVA fiber on the mechanical properties of the composites were investigated as well. The experimental results showed that the peak hydration heat rate increased with the increase in the retarder content, whereas the total hydration heat decreased. The superplasticizer boosted both the peak hydration heat rate and the total hydration heat. The compressive and flexural strength of the composites declined as the w/b increased. The retarder had a detrimental effect on the early strength but a little influence on the later strength. The PVA fibers had little effect on the mechanical properties of the composites, and the micromorphology revealed that there was a reasonable range of the PVA fibers content.
引用
收藏
页数：4
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