Alexandre Almeida Del Savio , Darwin La Torre Esquivel , Enrique Pasquel Carbajal , Flávio de Andrade Silva
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引用次数: 0
Abstract
This study addresses the gap in research on large-scale high-performance concrete (HPC) structures that exhibit self-compacting characteristics and high compressive strength through a detailed case study. It examines the temperature evolution due to hydration heat in a significant HPC structure consisting of an L-shaped reaction slab and wall arrangement. It is heavily reinforced and constructed for a structural laboratory in Lima, Peru. The investigation involved comprehensive instrumentation of the laboratory's reaction slab and wall to assess the impact of boundary conditions on temperature dynamics. Utilizing fifteen thermocouples, temperatures were monitored at various depths, and their progression over time was analyzed. Findings revealed that the peak temperatures reached 78.3°C in the slab and 74.6°C in the wall. Notably, the timing of formwork removal played a critical role in the thermal behavior of the reaction wall, significantly affecting its heating and cooling rates compared to the reaction slab. Despite these variations, the maximum established temperature gradients were not surpassed. Furthermore, the study critically evaluates the ACI method for predicting peak temperatures, identifying an average prediction error of 11.25 % against experimental outcomes. These insights contribute valuable data on the thermal performance of HPC in substantial structural elements, with broader implications for design and construction practices.
期刊介绍:
Case Studies in Construction Materials provides a forum for the rapid publication of short, structured Case Studies on construction materials. In addition, the journal also publishes related Short Communications, Full length research article and Comprehensive review papers (by invitation).
The journal will provide an essential compendium of case studies for practicing engineers, designers, researchers and other practitioners who are interested in all aspects construction materials. The journal will publish new and novel case studies, but will also provide a forum for the publication of high quality descriptions of classic construction material problems and solutions.