Carrier Properties of Recycled Aggregates and Its Application in Self-healing Concrete

被引：0
|
作者：
Liu C. [1 ,2 ]
Lü Z. [2 ,3 ]
Xiao J. [2 ]
Bai G. [3 ]
机构：
[1] College of Science, Xi'an University of Architecture and Technology, Xi'an
[2] School of Civil Engineering, Tongji University, Shanghai
[3] College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2020年 / 23卷 / 06期
关键词：
Carrier type; Microorganism; Optimal mix ratio; Recycled aggregate; Self-healing concrete;
D O I：
10.3969/j.issn.1007-9629.2020.06.011
中图分类号：
学科分类号：
摘要：
The porous recycled aggregate was used as a carrier of bacillus to prepare concrete with automatic crack repair function. At the same time, based on the expanded perlite carrier, diatom mud carrier and no carrier. The comparative study of the repair characterization was carried out. The results show that the carrier group has better repair performance than the group without carrier. The specimens of the recycled aggregate carrier show the best repair effect when cracked for 28days, and the maximum width of crack repair reaches 0. 27mm. At the same time, the influence of carrier particle size, bacterial liquid concentration, carrier ratio and crack width on self-healing efficiency is analyzed. Based on the test results analysis, the optimal mix ratio design scheme is proposed. © 2020, Editorial Department of Journal of Building Materials. All right reserved.
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页码：1337 / 1344
页数：7
相关论文
共 27 条
  • [1] LAWN B., Fracture of brittle solids, (1993)
  • [2] ZHANG X W, LI S Y, QIN Y, Et al., New method for investigating crack development in concrete using an ultrahigh-speed camera, ASCE-Journal of Material Civil Engineering, 31, 1, (2019)
  • [3] SHI X M, XIE N, KEITH F, Et al., Durability of steel reinforced concrete in chloride environments: An overview, Construction and Building Materials, 30, pp. 125-138, (2012)
  • [4] YI S T, HYUN T Y, KIM J K., The effects of hydraulic pressure and crack width on water permeability of penetration crack-induced concrete, Construction and Building Materials, 25, pp. 2576-2583, (2011)
  • [5] SHAIKH F., Effect of cracking on corrosion of steel in concrete, International Journal of Concrete Structures & Materials, 12, 1, pp. 53-64, (2018)
  • [6] TANG L P, UTGENANNT P, BOUBITSAS D., TANG L P, Prediction of durability and service life of reinforced concrete structures, Journal of the Chinese Ceramic Society, 43, 10, pp. 1408-1419, (2015)
  • [7] WANG Yanlei, SUN Huijie, CAO Mingmin, Analysis of durability service life of steel-concrete composite beams under environmental erosion, Journal of Building Structures, 36, pp. 355-359, (2015)
  • [8] MATIN D H, PETER G, CHRISTOPH L, Et al., Self-healing materials, Advanced Materials, 22, pp. 5424-5430, (2010)
  • [9] KIM V T, DE BELIE N., Self-healing in cementitious materials-A review, Materials, 6, 6, pp. 2182-2217, (2013)
  • [10] MIN W, BJORN J, METTE G., A review: Self-healing in cementitious materials and engineered cementitious composite as a self-healing material, Construction and Building Materials, 28, 1, pp. 571-583, (2012)
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