预拌混凝土对散装水泥质量的特殊要求  

The Quality of Ready-mixed Concrete on the Special Requirements of Bulk Cement

作　　者：朱金才[1] 刘丽丽[2] 王从军[3] 李洪军[3] 

机构地区：[1]淮安市散装水泥及商品混凝土管理办公室,江苏淮安223001 [2]淮安市建筑工程检测中心有限公司,江苏淮安223001 [3]淮安市捷达混凝土有限公司,江苏淮安223002

出　　处：《中国包装科技博览（混凝土技术）》2010年第10期105-108,共4页China Science and Technology Review

摘　　要：本文介绍了随着预拌混凝土的推广应用，作为预拌品混凝土企业，对散装水泥除了要求其正常指标合格外，还应考虑到市场的要求、季节变化在凝结时间方面的控制要求、混合材的掺量与品种的要求、含碱量的要求、对石膏掺量的要求、与外加剂的适应性要求、细度要求、体积稳定性要求、耐久性要求、混凝土裂缝控制要求等特殊要求，从而提高混凝土质量。In recent years, with the popularization and application of ready-mixed concrete, bulk cement consumption is also increasing. Bulk cement and packaged cement compared to the benefits of bulk cement selfevident, but the only cement plant, ＂with its benefits,＂ but failed to ＂abandon its drawbacks＂ to contribute. In recent years, the temperature of bulk cement factory generally too high, then transported to the mixing station depot and cooling problems, concrete placement temperature high, an increase of concrete cracking due to thermal stress and the tendency of early. In people＇s traditional thinking way, the concrete is designed according to strength, quality of cement concrete producers also stressed the strength of demand, the higher strength concrete is considered higher quality. Such a development, resulting in cracks in concrete structures in recent years, especially the increasingly common phenomenon of early cracking. The traditional thinking is no longer a universal concept, it is necessary to update some concepts and construction.

关 键 词：预拌混凝土 散装水泥 外加剂适应性 特殊要求 混凝土质量 

分 类 号：TU528.52[建筑科学—建筑技术科学]