胡涌瓊
胡涌瓊.攪拌站廢水對混凝土抗凍性能與力學性能的影響研究[J].混凝土與水泥制品,2022(1):89-94.
HU Y Q.Influence of Wastewater from Concrete Mixing Station on the Frost Resistance and Mechanical Properties of Concrete[J].China Concrete and Cement Products,2022(1):89-94.
攪拌站廢水對混凝土抗凍性能與力學性能的影響研究
胡涌瓊
胡涌瓊.攪拌站廢水對混凝土抗凍性能與力學性能的影響研究[J].混凝土與水泥制品,2022(1):89-94.
HU Y Q.Influence of Wastewater from Concrete Mixing Station on the Frost Resistance and Mechanical Properties of Concrete[J].China Concrete and Cement Products,2022(1):89-94.
摘 要:研究了攪拌站廢水摻量(25%、35%、45%)對混凝土凍融循環后的質量損失、外觀形態、動彈性模量及抗壓強度的影響規律,建立了摻廢水混凝土的凍融損傷模型。結果表明:當廢水摻量為25%時,試件的質量損失較大,但抗壓強度及動彈性模量仍高于普通混凝土;當廢水摻量為35%和45%時,混凝土的抗凍性能得到顯著提高,但廢水摻量為45%的混凝土動彈性模量下降較快,廢水摻量為35%的混凝土抗凍性能最佳;建立的凍融損傷模型能夠較好地反映摻廢水混凝土的凍融損傷演化規律。
Abstract: The effects of the content of wastewater from concrete mixing station(25%, 35%, 45%) on the mass loss, appearance, dynamic elastic modulus and compressive strength of concrete after freeze-thaw cycle were studied, and the freeze-thaw damage model of concrete mixed with wastewater was established. The results show that when the content of wastewater is 25%, the mass loss of the specimen is large, but the compressive strength and dynamic elastic modulus are still higher than those of ordinary concrete. When the wastewater content is 35% and 45%, the frost resistance of concrete is significantly improved, but the dynamic elastic modulus of concrete with wastewater content of 45% decreases rapidly, and the frost resistance of concrete with wastewater content of 35% is the best. The established freeze-thaw damage model can better reflect the freeze-thaw damage evolution law of concrete mixed with wastewater.
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