摘   要：研究了陶粒掺量对透水混凝土孔隙率、抗压强度、透水性能及抗冻性能的影响。结果表明，随着陶粒掺量的增加，透水混凝土的连续孔隙率、透水系数逐渐增大，抗压强度逐渐减小。当陶粒掺量为30％时，透水系数最大，达到了3.10 mm/s，此时抗压强度为11.7 MPa。经过25次冻融循环后，当陶粒掺量达25%以上时，透水混凝土发生冻融破坏。 Abstract: The influence of ceramic content on the measured porosity, mechanical properties, water permeability and frost resistance of pervious concrete was studied. The results show that the measured porosity and permeability coefficient of pervious concrete increase gradually with the increase of ceramic content, while the compressive strength decreases. when the ceramic content is 30%, the water permeability coefficient is the largest, reaching 3.10 mm/s, and the compressive strength is 11.7 MPa. After 25 freeze-thaw cycles, when the ceramic content is 25% or more, the pervious concrete is damaged by freezing and thawing.

李骁男,朱跃华,辛晓斌,等.陶粒掺量对透水混凝土性能影响研究[J].混凝土与水泥制品,2020(8):92-94. LI X N,ZHU Y H,XIN X B,et al.Effect of Ceramsite Content on the Performance of Pervious Concrete[J].China Concrete and Cement Products,2020(8):92-94.

摘   要：研究了不同粉煤灰取代率的再生混凝土在硫酸盐-冻融耦合环境下的质量损失率和相对动弹性模量的变化规律，并采用两参数Weibull函数建立了寿命预测模型。结果表明，在硫酸盐-冻融耦合环境下，随着冻融次数的增加，各组试件的相对动弹性模量和质量均呈现先上升后下降的趋势；当粉煤灰取代率为30%时，试件在硫酸盐-冻融耦合环境下的耐久性最优，最多可经受362次硫酸盐-冻融循环后才会失效。 Abstract: The mass loss rate and relative dynamic elastic modulus of recycled concrete with different replacement rate of fly ash under sulfate-freeze-thaw coupling environment were studied, and the life prediction model was established by using two-parameter weibull function. The results show that the relative dynamic elastic modulus and mass of each group of specimens increase first, and then decrease with the increase of freeze-thaw times under sulfate-freeze-thaw coupling environment. When the replacement rate of fly ash is 30%, the durability of specimens under sulfate-freeze-thaw coupling environment is the strongest, and it will fail only after 362 sulfate-freeze-thaw cycles at most.

冯琦,王宇斌.硫酸盐-冻融耦合环境下粉煤灰再生混凝土的耐久性研究[J].混凝土与水泥制品,2020(8):88-91. FENG Q,WANG Y B.Study of the Durability of Fly Ash Recycled Concrete Under Sulfate-freeze-thaw Coupling Environment[J].China Concrete and Cement Products,2020(8):88-91.

王钢,董玉文,郑磊,等.基于冲击波技术的透水混凝土抗冻性能研究[J].混凝土与水泥制品,2020(8):83-87. WANG G,DONG Y W,ZHENG L,et al.Experimental Study on Frost Resistance of Pervious Concrete Based on Impact Elastic Wave Method[J].China Concrete and Cement Products,2020(8):83-87.