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This study aims to understand how mild temperature exposure affects the compressive strength of Grade 20 concrete.

June 19, 2026Iconic Research and Engineering Journals

Effect of Mild Temperature Exposure on the Compressive Strength of Grade 20 Concrete: An Experimental Investigation for Tropical Construction Applications

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This study aims to understand how mild temperature exposure affects the compressive strength of Grade 20 concrete.
Produced 72 cube specimens using a 1:2:4 mix with a water/cement ratio of 0.6.
Exposed specimens to temperatures of 40, 60, 80, 100, and 120 °C for one hour, followed by air cooling for 24 hours.
Tested compressive strength in uniaxial compression against unheated control specimens after various curing periods.
At 7 and 14 days, exposure up to 100 °C increased compressive strength by 16.4%.
At 21 days, strength decreased by 23.3% at 120 °C, showing a significant loss.
At 28 days, reductions in strength at 40–120 °C were 1.6%, 7.9%, 10.1%, 11.1%, and 16.4%, respectively, with residual strength at 120 °C of 26.3 N/mm².

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Implication

Experimental investigation reveals compressive strength changes in grade 20 concrete after mild temperature exposure, supporting tropical construction applications.

Cite This Study

Francis et al. (2026) studied this question.

synapsesocial.com/papers/6a34dcea65a5b0777af2cd0f https://doi.org/10.64388/irev9i12-1718996

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Implication

Experimental investigation reveals compressive strength changes in grade 20 concrete after mild temperature exposure, supporting tropical construction applications.

Effect of Mild Temperature Exposure on the Compressive Strength of Grade 20 Concrete: An Experimental Investigation for Tropical Construction Applications

Key Points

Discussion

Implication

Cite This Study

Effect of Mild Temperature Exposure on the Compressive Strength of Grade 20 Concrete: An Experimental Investigation for Tropical Construction Applications

Key Points

Discussion

Implication

Cite This Study

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