Research on Influence Factors of Performance of Ultra-high Performance Seawater Sea-sand Concrete

被引：0
|
作者：
Zhu D. [1 ,2 ]
Li L. [1 ,2 ]
Guo S. [1 ,2 ]
机构：
[1] Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, Hunan University, Changsha
[2] College of Civil Engineering, Hunan University, Changsha
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2022年 / 49卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Compressive strength; Flexural strength; Orthogonal design; Short fiber; Ultra-high performance seawater sea-sand concrete;
D O I：
10.16339/j.cnki.hdxbzkb.2022039
中图分类号：
学科分类号：
摘要：
The study investigated the influence factors of the ultra-high performance seawater sea-sand concrete (UHPSSC), and optimized its overall performance. The orthogonal experiments were first conducted to study the effects of water binder ratio, sand binder ratio, silica fume content and fly ash content on the mechanical properties and fluidity of UHPSSC, and the optimal mix design is obtained. Then, based on the optimal mix proportion from the orthogonal test, the effects of volume fraction and short-cut fiber type on the mechanical properties of UHPSSC were studied, including polypropylene fiber, polyvinyl alcohol fiber, basalt fiber, alkali resistant glass fiber, ultra-high molecular weight polyethylene fiber and steel fiber. The results show that the most influential factors on the fluidity, the flexural strength and the compressive strength are water binder ratio, water binder ratio and fly ash content. Based on the comprehensive evaluation of mechanical performance and flowability, the optimized mix design is the dosage of cement, silica fume, fly ash, water and sea sand per cubic meter of concrete is 491 kg, 140 kg, 70 kg, 112 kg and 631 kg, respectively. Meanwhile, the enhancing effect of steel fiber on the mechanical performance of UHPSSC is most obvious. © 2022, Editorial Department of Journal of Hunan University. All right reserved.
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页码：187 / 195
页数：8
相关论文
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