EVALUATION OF THERMAL EFFECTS ON SLAG CEMENT CONCRETE’S STRENGTH PROPERTIES.

EVALUATION OF THERMAL EFFECTS ON SLAG CEMENT CONCRETE’S STRENGTH PROPERTIES.

Cement Based Composites (CEBACOM)
Volume 1 - Issue 3 - October 2020

Wasiu Ajagbe Sesugh Terlumun Michael Tiza

Abstract

This work examines the thermal resistance of cement slag concrete. The physical, chemical, and mechanical characteristics of concrete change with heat-fire. The effect of thermal load on cement slag concrete output must be measured because of the crucial role of thermal resistance in concrete structure performance and operation. The concrete cubes were produced and cured for 28 days and then subjected to varying temperatures range of 100°C, 150°C, 200°C, 250°C, and 300°C. Hardness and compressive strength were variations measured at 30, 45, and 60 minutes, the sample results were compared to those of ordinary Portland cement used for the study. The findings of this experiment demonstrate that strength loss was 0.45% at 100 °C, 1.75% at 150 °C, 2.67% at 200°C, 5.98% at 250°C and 12.04 % at 300 °C, the hardness property increased from 100° to 150°C but decreased with higher temperatures. However, normal concrete loss at 300 °C exceeds 20 percent of its compressive strength. This means that higher temperatures have negative effects on concrete strength. From the test, however, it has been noted that there was an insignificant loss of strength of concrete at temperatures below 250°C and however, above 250 °C a noteworthy loss of concrete strength was observed. The results indicate that slag concrete has a significantly higher thermal resistance potential than traditional concrete, and can, therefore, be used even in industrial applications.

Keywords

Thermal strength, Compressive Strength, Hardness, Slag Cement, Concrete.
https://doi.org/10.36937/cebacom.2020.003.003