Control of Thermal Crack in Mass Concrete Using Automated Curing System

Abstract

New thermal crack control system for mass concrete was developed to increase quality and to save construction period and cost. The principle of this system is that the curing water having proper temperature is supplied automatically to the surface of mass concrete member to keep the temperature difference between center and surface of concrete less than generally recommended temperature difference (20℃). Mock-up test was conducted to investigate the validity of newly developed curing system. As a result, no crack was founded in the specimen using automated curing system developed in this study, while many cracks occurred in another specimen without automated curing system. It was also confirmed that the strength and the durability of the concrete cured by automated curing system were improved.

A Study on the Thermal Crack Control of Large Turbine Foundation using Automated Curing System

“…Applied curing water on the surface of mass concrete keeps the temperature difference between center and surface of the structure below the threshold of specification. [5] This system can reduce the occurrence probability of thermal cracks, and the validity of this system has been already turned out from the application of mock-up test [6] and construction field. [7][8][9] …”

“…[5] This system can reduce the occurrence probability of thermal cracks, and the validity of this system has been already turned out from the application of mock-up test [6] and construction field. [7][8][9] …”