再生骨料混凝土增强技术研究现状分析

Present situation of recycled aggregate concrete enhancement-technology research

同天然骨料相比,再生骨料的表观密度小、堆积密度小、孔隙率大、吸水率大、压碎指标值较大,所以用再生骨料配制的混凝土强度和工作性能都差于原生混凝土。针对再生混凝土强度和工作性能较低等问题,从再生骨料强化方法和预先处理等措施出发,分析研究了目前再生混凝土增强技术和增强方式的研究现状,提出了再生骨料增强技术在以后的研究及应用中需进一步研究的若干问题,对以后再生骨料增强技术研究和应用工作提供一定的参考价值。

Compared with natural aggregate,recycled aggregate＇s apparent density,bulk density is lower,the porosity,water absorption,crushing index value is larger,so prepared with recycled aggregate concrete strength and work performance are worse than native of concrete.As the recycled concrete has lower strength and work performance,from the enhanced pre-treatment methods and measures,the article analyzed the current situation of enhancing technology and proposed a number of issues for future research and provided a reference value in the future research and application.