چکیده مقاله
This paper investigates the effect of various moisture and temperature curing regimes on the early stage compressive strength of ultra high performance concrete UHPC The primary aim of this research is to determine the optimal curing conditions for achieving maximum compressive strength in this advanced concrete type The UHPC mixture utilized in this study included sand as the fine aggregate, high purity silica fume, Type 1 Portland cement, water, and a polycarboxylate based superplasticizer for reducing the water to cement ratio A key aspect of UHPC curing process is the activation of silica fume, which requires suitable temperature for chemical reactions in order to develop superior mechanical properties Therefore, this study examined the impact of different moisture and temperature conditions on 50 mm cubic samples The UHPC specimens were cured at three temperatures: 25°C ambient temperature , 50°C, and 110°C, to clearly observe the effect of temperature on the pozzolanic reactions of silica fume and cement hydration process Submerged water curing at 110°C proved to be the most effective method for enhancing UHPC early stage compressive strength, leading to the attainment of the highest compressive strength These findings emphasize the importance of providing sufficient moisture alongside appropriate temperature to accelerate reactions and optimize UHPC performance
کلیدواژهها
نویسندگان
Newsha Sadeghi
Department of Civil and Environmental Engineering, School of Engineering, Shiraz University, Shiraz, Iran
Peyman Esmaeilpour
Department of Civil and Environmental Engineering, School of Engineering, Shiraz University, Shiraz, Iran
Naghmeh Safaei
Department of Civil and Environmental Engineering, School of Engineering, Shiraz University, Shiraz, Iran
Ali Reza Vosoughi
Department of Civil and Environmental Engineering, School of Engineering, Shiraz University, Shiraz, Iran
شیوه ارجاع
Sadeghi, Newsha and Esmaeilpour, Peyman and Safaei, Naghmeh and Vosoughi, Ali Reza,1404,Investigation of the influence of various curing regimes on the early-stage compressive strength of ultra-high-performance concrete,14th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات چهاردهمین کنگره بین المللی مهندسی عمران29 مهر 1404 · تهران