Study on durability of ultra high performances concrete with aeolian sand

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Wang, Jurui^1 ; Ou, Zhongwen^1 ; Liu, Jinming^1 ; Xiong, Zhiqing^1 ; Wang, Jingwei^1 ; Wang, Yueyang^1 ; Luo, Wei^1 ; Liu, Yang^1

Dept. of Military Installation, Army Logistics University of PLA, Chongqing

401311, China^1

关键词: Aeolian sand;    Economic benefits;    Freeze-thaw cycles;    High strength concretes;    Ordinary concretes;    Splitting tensile strength;    Ultra high performance;    Ultra high performance concretes;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022017/pdf
DOI  :  10.1088/1755-1315/300/2/022017

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Compared with ordinary concrete and high strength concrete, ultra-high performance concrete has more excellent mechanical properties and durability. It has great social and economic benefits to prepare ultra-high performance aeolian sand concrete using aeolian sand as aggregate. It is of great significance to study the durability of ultra-high performance aeolian sand concrete. The mechanical properties and durability of ultra-high performance concrete are analyzed and compared by optimizing mix ratio and optimizing mix ratio. The test results show that the compressive strength of ultra-high performance aeolian sand concrete loses obviously after 300 freeze-thaw cycles. However, the splitting tensile strength is not affected by the number of freeze-thaw cycles; the strength of ultra-high performance aeolian sand concrete is not affected by sulfate immersion; with the increase of the number of drywet cycle-sulfate erosion coupling cycles, the compressive strength and splitting tensile strength of ultra-high performance aeolian sand concrete decrease rapidly at first, then increase gradually, and then decrease rapidly.