The paper has studied the effects of different curing methods, curing temperature and curing time on the mechanical properties and microstructure of UHPC, and optimized the curing technology. The results showed that the optimal curing technology was that the UHPC was cured in hot water at 90°C for 48h and then maintained in standard curing. The super high performance concrete with large dimensional stability, strong freeze-thaw resistance and durability was produced.

Heqing Zhu. Curing Technology of Ultra-high Performance Concrete (UHPC). International Journal of Engineering Technology and Construction (2024), Vol. 5, Issue 1: 51-58. https://doi.org/10.38007/IJETC.2024.050106.

[1] Yan Peiyu. Development and current status of ultra-high performance concrete (UHPC). Science and Technology Navigation, 2010 (15): 36-41.

[2] Porteneuvea C, Korbb J, Petitb D, et al. Structure-texture correlation in ultra-high Performance concrete: a nuclear magnetic resonance study. Cement and Concrete Research, 2002, 32 (1): 7-101.

[3] Yang Shengjiang. Experiment on the mechanical properties of RPC concrete under different curing systems. Low Temperature Building Technology, 2013, 181 (05): 20-22.

[4] Ge Xiaoli, Liu Jiaping, Wang Yujiang, et al. Influence of later hydration of unhydrated cement particles on the properties of UHPC. Journal of Civil, Architectural and Environmental Engineering, 2016, 38 (01): 40-45.

[5] Wang Qiuwei, Wang Zhiwei, Tao Yi, et al. Experimental study on the influence of mix proportion and curing system on the strength of reactive powder concrete. Journal of Xi'an University of Architecture and Technology (Natural Science Edition), 2017, 49 (03): 382-387.

[6] Liao Juan, Zhang Tao, Ji Wenzhan, et al. Influence of curing system on the strength and toughness of reactive powder concrete (RPC). Sichuan Building Science, 2013, 39 (06): 257-260.

[7] Xu Haibin, Deng Zongcai. Experimental study on the mechanical properties of a new type of ultra-high performance concrete. Concrete, 2014, 294 (04): 20-23.