摘要
首先从水胶比、再生粗骨料质量及掺量、矿物掺合料种类与掺量以及硫酸盐侵蚀4个因素入手对再生混凝土路面砖强度影响的研究进展进行了归纳总结,指出降低水胶比、提高再生粗骨料的质量、掺加适量的矿物掺合料是提高再生混凝土路面砖强度的有效途径。简要介绍了再生混凝土路面砖的耐磨性、抗冻性以及干燥收缩性,认为应考虑复杂环境下再生混凝土路面砖的性能。提出了再生混凝土路面砖亟待解决的一些关键问题,包括荷载与环境因素耦合下再生混凝土路面性能变化规律与演变机理。
Recent advances on the influence of several factors on strength property of recycled concrete pavement brick were summa- rized comprehensively, including the water - binder ratio, quality and dosages of recycled coarse aggregate, type and volumes of mineral additions and sulfate attack.It was pointed out that lower water -binder ratio,recycled coarse aggregate with high quality and mineral admixture with appropriate amount were effective ways to enhanced strength of recycled concrete road brick. Then, abrasion resistance, anti - frost performance and dry shrinkage of recycled concrete pavement brick were introduced briefly. Properties of recycled concrete road brick were also considered in the complicated surroundings.Finally, some key scientific issues in performances of recycled concrete pavement brick were put forward, including change regulation and evolution mechanism of properties of recycled concrete road brick subjected to load and multi - environmental factors simultaneously.
出处
《混凝土》
CAS
北大核心
2016年第2期140-144,共5页
Concrete
基金
国家自然科学基金(51278073)
江苏省产学研合作前瞻性联合研究项目(BY2013024-17
BY2014037-30
BY2015027-23)
关键词
再生混凝土
路面砖
性能
进展
recycled concrete
pavement brick
property
advance
