| Autor: |
Packrisamy, Kavitha, Jayakumar, Karthikeyan |
| Zdroj: |
Arabian Journal of Geosciences; Mar2022, Vol. 15 Issue 5, p1-11, 11p |
| Abstrakt: |
The construction industry can be more sustainable by utilizing solid waste as building materials. In this work, the combined effect of ceramic tile waste (CTW) and fly ash (FA) on the compressive strength and permeability of concrete was studied. CTW was used as a partial to complete substitute for crushed sand (10% to 100%), and FA was used as a partial substitute for cement (30%). Replacement of 40% of crushed sand with CTW led to the maximum compressive strength. With 40% CTW, the compressive strength of 30% fly ash concrete increased by 7.2% at 7 days, 9.5% at 28 days, and 8.5% at 56 days. At 30% to 50% of CTW, the combined action of CTW and FA resulted in the maximum reduction in pore connectivity of concrete and thus increased resistance to chloride penetration. X-ray diffraction analysis demonstrated that the incorporation of CTW converts the Ca(OH)2 into a C-S–H gel and thus enhanced the compressive strength of concrete. Prediction analysis for the compressive strength of concrete was carried out using the Box-Behnken design (BBD). To graphically illustrate the individual and combined effect of CTW and FA, contour plots and surface plots were constructed. A linear regression analysis was used to generate a correlation between the compressive strength and chloride permeability of fly ash concrete. The present study can be considered to supplement the current knowledge available on the utilization of industrial waste in concrete construction and its prediction analysis. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink