Experimental Study on Sulfate Wetting–Drying Cycle of Metal Tailings Powder Concrete

Wu, Ruidong; Zou, Min; Liu, Juanhong; Zhang, Guangtian; Zhang, Yueyue

doi:10.3389/fmats.2022.858517

Cited by 2 publications

(1 citation statement)

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“…Both the bending load and dry-wet cycle can accelerate the damage process of sulfate attacking concrete. Wu Ruidong et al [25] carried out the sulfate dry-wet cycle test of concrete with different contents of metal tailings powder. The results show that the proper addition of metal tailings powder can improve the sulfate corrosion resistance of C50 concrete.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Microstructure of Rubber Concrete under Coupling Action of Sulfate Attack and Dry–Wet Cycle

Heng

Pang

2023

Sustainability

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In order to study the mechanical properties of rubber concrete (RC) with different rubber particle sizes after dry–wet cycles in a sulfate environment, apparent morphology analysis, mass loss analysis, relative dynamic elastic modulus analysis, compressive strength loss analysis, internal microscopic characteristics and deterioration degree analysis of ordinary concrete (NC) and rubber concrete after dry–wet cycles were compared and analyzed. The results show that with the increase in the number of dry–wet cycles, the surface caves of rubber concrete increase, the internal microcracks develop and penetrate, and the macroscopic strength increases first and then decreases significantly. The high elasticity of rubber effectively improves the expansion force caused by sulfate attack and the dry–wet cycle. The deterioration degree of RC in each dry–wet cycle stage is obviously better than that of NC. When the rubber particle size is 0.85 mm, the performance of the sample is the best. After 120 days of dry–wet cycle, the compressive strength is reduced by 37.4%, and the compressive strength of concrete with a rubber particle size of 0.85 mm is reduced by 11.2%. After cyclic loading, the deterioration degree of concrete is 5.1% lower than that of ordinary concrete.

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Section: Introductionmentioning

confidence: 99%