Study on Mechanical Properties and Durability Performance of Pervious Concrete Containing Recycled Aggregate

被引：0
|
作者：
Zhang C. [1 ,2 ]
Ren P. [1 ,2 ]
Deng P. [1 ]
Zhu Z. [1 ]
Gao X. [1 ]
Guo S. [1 ,2 ,3 ]
机构：
[1] College of Civil Engineering, Hunan University, Changsha
[2] Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education（Hunan University）, Changsha
[3] Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, Changsha
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2023年 / 50卷 / 03期
关键词：
durability; high-performance pervious concrete; mechanical performance; permeability; recycled aggregate;
D O I：
10.16339/j.cnki.hdxbzkb.2023042
中图分类号：
学科分类号：
摘要：
This study aims to comprehensively improve the mechanical properties，permeability and durability of the pervious concrete with recycled aggregate through optimization of cementitious matrix and adding recycled fine aggregate with different content. Firstly，the simplex-centroid design method was used to optimize the ternary cement⁃ ing system composed of cement（C），fly ash（FA）and silica fume（SF），and the high-performance cementitious ma⁃ trix is obtained. Then，the effects of high-performance cementitious matrix and recycled aggregate content（0%，30% and 50%）on mechanical properties and durability of pervious concrete were analyzed. The experimental results show that the compressive strength and freeze-thaw durability of pervious concrete with recycled aggregate can be sig⁃ nificantly improved by using high-performance cementitious materials，and it can also meet the permeability require⁃ ments. When the recycled aggregate content is 0%，30% and 50%，the 28 d compressive strength is increased by 72.4%，100% and 44.2%，respectively；the mass loss of 50 freeze-thaw cycles was 1.5%，2.2% and 2.5%，respec⁃ tively. In addition，it is found that the failure mode of pervious concrete with recycled aggregate is related to the per⁃ formance of cementitious material and the content of recycled aggregate，which can provide a reference for the design and application of pervious concrete with recycled aggregate. © 2023 Hunan University. All rights reserved.
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页码：185 / 194
页数：9
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