- 臧旭航1,朱平華1,王新杰1,陳春紅1,劉 惠1,許 鳴2
2021年第1期
摘要
引用本文
摘 ? 要:研究了不同凍融工況下黏附砂漿含量對高強再生透水混凝土抗凍耐久性的影響,并用SEM對其微觀機理進行了分析。結果表明,300次凍融循環后,以相對動彈性模量不低于60%和抗壓強度損失率不高于25%為失效準則,確定了再生粗骨料黏附砂漿的界限含量分別為41.19%和43.89%。在設計使用年限分別為100年、50年和30年的嚴寒地區高度飽水條件下,再生粗骨料最大黏附砂漿含量分別為33.00%、38.94%和40.27%。
Abstract: The influence of attached mortar content on the frost resistance of high strength recycled pervious concrete under different freeze-thaw conditions was studied, and the microscopic mechanism was analyzed by SEM. The results show that after 300 freezing-thawing cycles, taking the relative dynamic elastic modulus of not less than 60% and the loss rate of compressive strength not more than 25% as the failure criterion, the limit content of recycled coarse aggregate attached mortar is determined to be 41.19% and 43.89%, respectively. When the designed service life is 100 years, 50 years and 30 years respectively, the maximum attached mortar content of recycled coarse aggregate applied for structural concrete is 33.00%, 38.94% and 40.27%, respectively.
臧旭航,朱平華,王新杰,等.再生骨料黏附砂漿含量對人工成孔透水混凝土抗凍性的影響[J].混凝土與水泥制品,2021(1):80-84,99.
ZANG X H,ZHU P H,WANG X J,et al.Effect of Recycled Aggregate Attached Mortar Content on Frost Resistance of Artificial Porous Pervious Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):80-84,99.