摘要
研究目的:通过分析外加剂中有害物的测控项目及质量控制模式和对国内、国际标准的对比,以及对现场使用情况的分析,总结出可行的外加剂有害物的测控项目和质控模式;提出符合我国国情的测控项目及改善现行质控模式的有效方法。研究结论:现行的混凝土外加剂有害物是单元质控模式(即只控制外加剂本身有害物含量)已不适应现场的需要,通过对外加剂国内、国际标准的对比分析,建议改用实用和可操作的双元质控模式(既要控制外加剂本身有害物含量,又要控制外加剂带入混凝土中有害物总量)。双元质控模式符合当前铁路客运专线建设推广应用聚羧酸高性能减水剂,保证混凝土耐久性的要求。
Research purposes： Based on the analyses and comparison of the test items and quality control mode for the nuisance in concrete admixture at home and abroad, the suitable and effective way is offered for improving the control modes and the test items for the nuisance in the concrete admixture.
Research conclusions：The present single item control mode for the nuisance in concrete admixture, namely only control of the content of the nuisance in concrete admixture, can not meet the needs, so it is suggested that the double items control modes, namely control of both the content of the nuisance in concrete admixture and the content of nuisance brought into soil, should be adopted for the nuisance in concrete admixture, which can satisfy the requirements of using the Polycarboxylate high performance water reducer and guaranteeing the concrete durability for construction of passenger dedicated line.
出处
《铁道工程学报》
EI
北大核心
2009年第1期7-10,共4页
Journal of Railway Engineering Society
关键词
混凝土外加剂
有害物
质控模式
聚羧酸高性能减水剂
concrete admixture
nuisance
control modes
Polycarboxylate high performance water reducer
