Study on the Crack Resistance Properties of Manufactured Sand Concrete

Abstract:

In order to solve the problem of workability and durability of concrete caused by poor particle shape and morphology of manufactured sand and high content of stone powder, which leads to crack problems of concrete, the tensile strength, elastic modulus, shrinkage performance and adiabatic temperature rise performance of manufactured sand concrete were studied in this paper. And the cracking risk factor (the reciprocal of the anti cracking safety factor) of the concrete with the special admixtures and the crack resistant functional materials was calculated by according to GB 50496-2018. The experimental results show that the elastic modulus and tensile strength at the age of 28 d of the test concrete are increased from 31.0 GPa to 34.6 GPA and 2.91 MPa to 4.23 MPa, respectively. The shrinkage performance and adiabatic temperature rise of the concrete are reduced from 98 με to 65 με and 38.9°C to 38.4°C, respectively. The risk factors of surface and center crack resistance of mass concrete floor are 0.52 and 0.75, so the concrete under inspection will not crack.

• Periodical: Materials Science Forum (Volume 1033)
• Pages: 178-182
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1033.178
• Online since: June 2021
• Authors: Rui Jun Gao*, Hao Wu, Chao Liu
• Keywords: Adiabatic Temperature Rise, Crack Resistance, Manufactured Sand, Shrinkage Property

References

[1] Y. Q. Liang, L. C. Wang, Prediction of corrosion-induced cracking of concrete cover: A critical review for thick-walled cylinder models, Ocean Eng. 213 (2020) 107688.

DOI: 10.1016/j.oceaneng.2020.107688

[2] W. Zeng, Y. N. Ding, Y. L. Zhang, F. Dehn, Effect of steel fiber on the crack permeability evolution and crack surface topography of concrete subjected to freeze-thaw damage, Cem. and Concr. Res. 138 (2020) 106230.

DOI: 10.1016/j.cemconres.2020.106230

[3] H. Wang, J. P. Li, L. Li, H. H. Chen, Service life of underground concrete pipeline with original incomplete cracks in chlorinated soils: Theoretical prediction, Constr. Build. Mater. 188 (2018) 1166-1178.

DOI: 10.1016/j.conbuildmat.2018.08.184

[4] S. Suleman, S. Needhidasan, Utilization of manufactured sand as fine aggregates in electronic plastic waste concrete of M30 mix, Meter. Today: Proc. 33 (2020) 1192-1197.

DOI: 10.1016/j.matpr.2020.08.043

[5] Y. B. Li, X. Ruan, Experimental study on crack resistance of manufactured sand concrete, Chin. and for. highw. 33 (2013) 248-251.

[6] Y. H Huang, G. X Liu, S. P Huang, R. Rao, C. F. Hu, Experimental and finite element investigations on the temperature field of a massive bridge pier caused by the hydration heat of concrete, Constr. Build. Mater. 192 (2018) 240-252.

DOI: 10.1016/j.conbuildmat.2018.10.128

[7] J. Michael, S. H.Smith, S. A. Durham, M. G. Chorzepa, Crack control in concrete walls through novel mixture design, full-scale testing, and finite element analysis, Constr. Build. Mater. 166 (2018) 301-314.

DOI: 10.1016/j.conbuildmat.2018.01.081