A Study on Concrete for Civil Engineering Structures to be Constructed in Hot Weather
By Kinki Chapter "Research Committee on Current State and Measures of Hot Weather Concrete Construction”
Concrete Journal, Vol.57, No.4, Apr. 2019
- Synopsis
- This paper reports the results of experimental and analytical study regarding the five items that need to be considered when the concrete temperature during placing is expected to exceed 35°C, as indicated in the Japan Society of Civil Engineers' “Standard Specifications for Concrete Structures-Materials and Construction". No remarkable changes in the quality of fresh concrete and hardened concrete and the workability of concrete were observed at the 35°C temperature demarcation point. The points of note regarding design and construction, and reference data to take countermeasures were shown On the other hand, with regard to thermal cracking and high-temperature history at an early age, the results showed that it is necessary to clarify the performance requirements and consider effective measures from the planning and design stages.
- Keywords:
- hot-weather concrete, fresh properties, compressive strength, pumpability, thermal cracking, high-temperature history at an early age
