Mechanical Properties of Curb Recycled Aggregate Concrete after High Temperature

被引：0
|
作者：
Liu P. [1 ,2 ]
Wang M. [1 ,2 ]
Li Q. [1 ,2 ]
机构：
[1] Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, Xuzhou
[2] School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2022年 / 25卷 / 12期
关键词：
concrete; curb recycled aggregate; high temperature; mechanical property;
D O I：
10.3969/j.issn.1007-9629.2022.12.003
中图分类号：
学科分类号：
摘要：
To investigate the effect of high temperature on the mechanical properties of concrete with curbs recycled aggregate， the mechanical properties of concrete were tested after high temperature. Combined thermogravimetric analysis and differential scanning calorimetry， the effect of replacing aggregate coarse and fine categories and temperatures on the mechanical properties of concrete was studied. The results show that the curb coarse aggregate at 573 ℃ shows a prominent heat absorption peak， while the curb fine aggregate mortar at 430 ℃ and 750-850 ℃ shows a pronounced heat absorption peak. The compressive strength， splitting tensile strength， and modulus of elasticity of curb coarse and fine aggregate concrete all decrease gradually with the increase of temperature. Compared with the room temperature， the compressive strength decreases slowly at 400 ℃ and decreases by 60.1% and 55.1% at 800 ℃； the splitting tensile strength decreases significantly at 600 ℃ and decreases by 74.6% and 70.4% at 600 ℃； the modulus of elasticity decreases significantly at 600 ℃ and decreases by 89.8% and 90.9% at 600 ℃， respectively. © 2022 Tongji University. All rights reserved.
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页码：1233 / 1240
页数：7
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共 17 条
  • [1] WANG Shuxin, XIONG Hui, XIE Xinghua, Influence of recycled aggregate alternative methods on concrete mechanical properties［J］, China Harbour Engineering, 41, 4, pp. 24-28, (2021)
  • [2] KONG Liang, MENG Yanyu, GU Yuanyuan, Et al., Freeze‑thaw resistance of granite waste recycled concrete pavement brick［J］, Bulletin of the Chinese Ceramic Society, 40, 5, pp. 1545-1553, (2021)
  • [3] HAO Tong, TIAN Wenqin, CAO Liqiang, Et al., Large amount of waste granite stone powder on the mechanical properties of mortar［J］, Concrete, 3, pp. 103-106, (2021)
  • [4] JAIN A, GUPTA R, CHAUDHARY S., Sustainable development of self‑compacting concrete by using granite waste and fly ash［J］, Construction and Building Materials, 262, (2020)
  • [5] BINICI H, AHSOGAN O., Durability of concrete made with natural granular granite，silica sand and powders of waste marble and basalt as fine aggregate［J］, Journal of Building Engineering, 19, pp. 109-121, (2018)
  • [6] CHENG Yunhong, YANG Sihui, ZHANG Jingyu, Et al., Effect of substitution of ceramic fine aggregate on compressive strength of concrete［J］, Journal of Northeastern University（Natural Science）, 41, 11, pp. 1661-1666, (2020)
  • [7] REN Fei, Effects of scrap ceramics manufactured sand on the performance of concrete［J］, New Building Materials, 48, 2, pp. 66-68, (2021)
  • [8] WANG Liang, WANG Zhiwei, Study on the strength and durability of coal gangue fine aggregate concrete［J］, Concrete, 3, pp. 153-155, (2018)
  • [9] CHEN Keyu, WU Dazhi, HU Juntao, Et al., Impact of the substitution of river sand by waste glass on the properties of the geopolymer mortar［J］, Journal of Building Materials, 25, 6, pp. 577-584, (2022)
  • [10] ZHAN Xuewu, XING Yiqiang, WU Xiaopeng, Et al., Study on closed‑pore foamed ceramics using granite scraps by orthogonal experiment［J］, Bulletin of the Chinese Ceramic Society, 39, 8, pp. 2650-2655, (2020)
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