Early-Age Strength of Ultra-High Performance Concrete in Various Curing Conditions

Materials

Jong-Sup Park¹  Young Jin Kim¹  Jeong-Rae Cho¹  Se-Jin Jeon² 

[1] Structural Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Gyeonggi-do 411-712, Korea; E-Mails:;Department of Civil Systems Engineering, Ajou Univeristy, Suwon-si, Gyeonggi-do 443-749, Korea

关键词: Ultra-High Performance Concrete;    curing;    strength;    cast-in-place;   

DOI  :  10.3390/ma8085261

来源: mdpi

【 摘 要 】

The strength of Ultra-High Performance Concrete (UHPC) can be sensitively affected by the curing method used. However, in contrast to the precast plant production of UHPC where a standard high-temperature steam curing is available, an optimum curing condition is rarely realized with cast-in-place UHPC. Therefore, the trend of the compressive strength development of UHPC was experimentally investigated in this study, with a focus on early-age strength by assuming the various curing conditions anticipated on site. Concrete specimens were cured under different conditions with variables including curing temperature, delay time before the initiation of curing, duration of curing, and moisture condition. Several conditions for curing are proposed that are required when the cast-in-place UHPC should gain a specified strength at an early age. It is expected that the practical use of UHPC on construction sites can be expedited through this study.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.