艾洪祥1,刘 洋1,郑海康1,李绍纯2,岳彩虹1,宁江萌1
艾洪祥,刘洋,郑海康,等.不同养护温度对再生混凝土性能的影响[J].混凝土与水泥制品,2022(12):28-31.
ZHENG H K,LI S C,YUE C H,et al.Effect of Different Curing Temperatures on the Properties of Recycled Concrete[J].China Concrete and Cement Products,2022(12):28-31.
不同养护温度对再生混凝土性能的影响
艾洪祥1,刘 洋1,郑海康1,李绍纯2,岳彩虹1,宁江萌1
艾洪祥,刘洋,郑海康,等.不同养护温度对再生混凝土性能的影响[J].混凝土与水泥制品,2022(12):28-31.
ZHENG H K,LI S C,YUE C H,et al.Effect of Different Curing Temperatures on the Properties of Recycled Concrete[J].China Concrete and Cement Products,2022(12):28-31.
摘 要:研究了在低湿环境下,不同养护温度(-40、-20、0、20、40、60 ℃)对再生混凝土工作性、力学性能、耐久性能的影响。结果表明:当养护温度为40 ℃时,再生混凝土28 d的抗压强度最佳,相比于常温(20 ℃)养护下的抗压强度提高了17%;过低或过高的养护温度都会对再生混凝土的抗裂性能造成影响;温度为40 ℃时的养护效果最优,试件内部密实度高,再生混凝土的耐久性能好。
Abstract: The effects of different curing temperatures (-40, -20, 0, 20, 40, 60 ℃) on the workability, mechanical properties and durability of recycled concrete in low humidity environment were studied. The results show that when the curing temperature is 40 ℃, the compressive strength of recycled concrete at 28 d is the best, which is 17% higher than that at room temperature(20 ℃). Too low or too high curing temperature will affect the anti cracking performance of recycled concrete. The curing effect is optimal when the temperature is 40 ℃, the internal compactness of the specimen is high, and the durability of recycled concrete is good.
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