Compressive Strength and Chloride Ion Permeability Test of Concrete Incorporating Fly Ash and GGBS with Diverse Water Binder Ratio

Gehlot, Tarun; Sankhla, Suresh Singh; Parihar, Sangeeta

doi:10.4028/www.scientific.net/msf.1048.311

Cited by 1 publication

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References 7 publications

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“…At the same time, when the IOT content was higher (>40%), the compressive strength decreased. This change trend was similar to that found in the results of other studies [27][28][29] on ordinary concrete.…”

Section: Compressive Strengthsupporting

confidence: 91%

Study on Erosion Characteristics and Mechanisms of Recycled Concrete with Tailings in Salt Spray Environments

Zhan

et al. 2022

Buildings

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To improve the utilization efficiency of iron tailings (IOT) and recycled coarse aggregate (RCA), the mechanical properties, erosion depth and other erosion characteristics of recycled aggregate concrete (RAC) with different IOT amounts were studied in salt spray erosion environments and the erosion mechanisms were analyzed by SEM technology. The results showed that at the same erosion age, IOT caused the compressive strength and splitting tensile strength of RAC to tend to first increase and then decrease, with the optimum mixing amount being approximately 40%. Under the same conditions, the erosion depth of RAC was much higher than that of ordinary concrete. The erosion depth first decreased and then increased with an increasing amount of IOT. When the IOT content was 30–40%, the salt spray erosion depth reached its minimum. The solidification coefficient K1 first decreased and then increased with the increase in iron tailings content. At its lowest point, the iron tailings content was approximately between 30% and 50%, which demonstrated that the higher the salt spray erosion age, the larger the solidification coefficient. Through SEM microscopic images, it could be seen that the appropriate amount of iron tailings caused the formation of salt spray erosion crystals and that the effect of physical expansion pressure caused a reduction in the porosity of RAC and a slight increase in its mechanical properties and salt spray erosion resistance. When the iron tailings content was large, the optimal mix ratio of the concrete also changed and then harmful pores and cracks were regenerated. Therefore, resistance to salt spray erosion was weakened. The research in this paper provides a theoretical basis for the engineering application of recycled concrete with tailings in salt spray environments.

show abstract

Section: Compressive Strengthsupporting

confidence: 91%

Study on Erosion Characteristics and Mechanisms of Recycled Concrete with Tailings in Salt Spray Environments

Zhan

et al. 2022

Buildings

View full text Add to dashboard Cite

show abstract

Compressive Strength and Chloride Ion Permeability Test of Concrete Incorporating Fly Ash and GGBS with Diverse Water Binder Ratio

Cited by 1 publication

References 7 publications

Study on Erosion Characteristics and Mechanisms of Recycled Concrete with Tailings in Salt Spray Environments

Study on Erosion Characteristics and Mechanisms of Recycled Concrete with Tailings in Salt Spray Environments

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