Effect of three-step mixing technology based on vibratory mixing on properties of high-strength concrete

2018 6th International Conference on Mechanical Engineering, Materials Science and Civil Engineering

材料科学;机械制造;土木建筑工程

Zhao, Kaiyin^1 ; Zhao, Lijun^1 ; Liu, Shanshan^1 ; Hou, Jinru^1

Key Laboratory of Highway Construction Technology and Equipment, Ministry of Education, Chang'An University, Xi'an

710064, China^1

关键词: Contrast tests;    High strength concretes;    Mixing method;    Mixing process;    Mixing technology;    Multi-step;    Plastic viscosity;    Research results;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/542/1/012003/pdf
DOI  :  10.1088/1757-899X/542/1/012003

来源: IOP

【 摘 要 】

A large number of experimental studies have shown that both vibratory mixing and multi-step mixing processes can improve the workability of concrete and improve the strength and durability of high-strength concrete(HSC). In this paper, for C60 HSC, two kinds of mixin g methods: conventional compulsory mixing and vibratory mixing, two kinds of mixin g technology: one-step mixing technology and three-step mixing technology are used to carry out contrast test. The purpose is to study the influence of mixing meth od and mixing technology on the performance of HSC. The research results show that compared with the one-step mixin g technology, the three-step mixing technology can significantly reduce the plastic viscosity of the concrete, improve its fluidity, and significantly improve the compressive strength at the age of and after 28 days and 56 days under the condition of the conventional compulsory mixing and the vibratory mixing. And the study found that the most suitable mixing method and mixin g technology for C60 HSC are vibratory mixing method and three-step mixing technology.