PRELIMINARY RESULTS OF STUDY ON THE INFLUENCE OF CURING TEMPERATURE ON THE COMPRESSIVE STRENGTH OF FLY ASH CONCRETE
Tóm tắt
The global expansion of infrastructure is propelling the construction sector towards increased cement usage. However, cement production not only reduces natural resources but also affects the living environment by emitting a significant amount of greenhouse gases. To promote sustainable construction practices, reusing industrial waste into construction materials should be considered. This study was conducted to evaluate the possibility of replacing cement with fly ash in civil concrete, to increase the efficient use of natural resources and minimize the impact on the environment. The study proposes varying the proportion of fly ash in the concrete mix (ranging from 0% to 40%) and examining its impact on the final compressive strength of low-calcium fly ash concrete (FAC) under high-temperature curing conditions. Evaluation parameters include mass loss under dry conditions, wet and dry densities, and the maximum compressive strength attained to assess the durability of FAC. Preliminary results indicate that curing FAC specimens at 70°C leads to enhanced compressive strength. Furthermore, FAC demonstrates marginally higher wet density compared to traditional concrete, highlighting its versatility as a construction material. The study recommends prioritizing FAC usage in projects exposed to sunlight, considering its cost-effectiveness and environmental advantages. These initial insights provide valuable experimental data for advancing FAC utilization in residential construction.
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DOI: https://doi.org/10.54607/hcmue.js.21.9.4255(2024)
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