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早强混凝土被用于维修高速公路水泥混凝土路面,结合广西南坛高速公路,提出一种二次搅拌投料工艺,可以有效解决早强混凝土运输距离较短的问题。并结合室内实验对外加剂掺量的研究,得到了最适合于广西南坛高速公路的早强混凝土二次搅拌配合比设计方案,最后把实验方案用于现场试验路,路用性能和取芯效果良好,获得的早强混凝土性能参数为实体工程水泥混凝土路面养护提供了科学依据。
Early strength concrete is used to repair the cement concrete pavement of expressway. Combined with Guangxi Nanning Expressway, a secondary mixing feeding process is proposed, which can effectively solve the problem of short transportation distance of early strength concrete. Combined with the laboratory experiments on the admixture of the amount of research, the most suitable for the South Expressway in Guangxi early strength concrete mixing ratio of the second design, and finally the experimental program for the on-site test road, road performance and coring Good results obtained early strength concrete performance parameters for the physical engineering cement concrete pavement maintenance provides a scientific basis.