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Título : Quantifying the effect of construction site factors on concrete compressive strength using designed experiments
Autor : Santamaria, Jorge
Valentin, Vanessa
Huerta, Gabriel
Palabras clave : CONCRETE
CONSTRUCTION SITE FACTORS
UNSTRUCTURED FACTORS
COMPRESSIVE STRENGTH
PREDICTION MODEL
OPERATING CONDITIONS
Fecha de publicación : 2019
Editorial : Quito
Citación : Santamaria, J.L., Valentin, V. and Huerta, G. (2019) Quantifying the effect of construction site factors on concrete compressive strength using designed experiments, Int. J. Experimental Design and Process Optimisation, 6, (1): 26–49.
Resumen : Both structured and unstructured factors affect concrete compressive strength. Structured factors, e.g., raw materials, affect concrete production. Unstructured factors, e.g., local conditions, affect concrete quality during the construction phase. The effects of structured factors on concrete metrics are well understood, while there is limited understanding on the effects of unstructured factors. A full 25 factorial design was conducted to quantify the effect of five construction site factors including crew experience, compaction method, mixing time, curing humidity and curing temperature. A linear regression model was developed considering significant affecting factors. Model adequacy was evaluated through residual plots. The results indicate that compaction method, mixing time, curing humidity and curing temperature affect concrete compressive strength significantly, with curing temperature having the highest percent contribution (50.0%). The final regression model was used to create a decision-support tool that enables construction workers to find operating conditions and take corrective actions to preserve concrete quality.
URI : http://www.dspace.uce.edu.ec/handle/25000/17415
ISSN : 2040-2260
2040-2252
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