Application and study of compensating shrinkage concrete 大体积补偿收缩混凝土中膨胀剂的使用效能
Some problems on the application of expansion admixture and compensated shrinkage concrete 耐磨抗冲击补偿收缩混凝土的研究
Research and application on c80 high strength concrete with performance of compensating shrinkage 80补偿收缩混凝土研发与应用
Research on compensating shrinkage of high strength concrete incorporated with expansive admixture 引入膨胀剂的高强混凝土的收缩补偿研究
The expansive characteristics of new mgo - based expansive materials and the compensating shrinkage of cement paste with high c3s content were investigated 摘要主要研究了新型镁质膨胀材料对高c3s含量(质量分数为64 . 4 % )水泥浆体收缩的补偿作用。
The testing results and theoretical analysis showed that they can respectively reduce , restrain and compensate shrinkage of the concrete , while can ’ t worsen its mechanical property 试验结果和理论分析表明,减缩剂、聚丙烯纤维和膨胀剂分别对砌块材料产生了减缩、限缩和补偿收缩的效果,且不影响材料的力学性能。
Making use of traditional methods of compensating shrinkage , that is , added with appropriate expansion agent , compensating for the shrinkage of super high strength & high performance concrete has been realized 本研究采用传统的补偿收缩方法,在超高强混凝土中掺入合适的膨胀剂后,达到了补偿超高强混凝土收缩的目的。
The process of structure formation of acic is studied by means of xrd , sem and so on . meanwhile , the cause and mechanism of the acic compensating shrinkage have been analyzed , and the composition , structure and the rule of durability influence of acic have also been proved up 通过xrd 、 sem等微观测试手段研究了钢渣防渗抗裂混凝土的结构形成过程,分析其补偿收缩原因及机理,探明了钢渣防渗抗裂混凝土相组成、结构及其对耐久性的影响规律。
Incorporating with mineral admixtures could control the tendency of evening shrinkage of hpc , but the effect is not much remarkable . and the expansive agent uea could compensate shrinkage , but different curing conditions have significant effects on the volume stabilization of hpc . it is necessary to enhance the water curing at the young age and try the best to prolong the curing time 本文对高性能混凝土体积稳定性的特点及其补偿措施进行了系统的研究,主要包括:指出了水胶比对高性能混凝土体积稳定性的影响;分析了掺矿物外加剂高性能混凝土体积稳定性的特点;研究了联合掺加矿物外加剂和膨胀剂对高性能混凝土收缩的补偿效果;探索了用膨胀型中热水泥来配制高性能混凝土对收缩的改善。
If stone ballast block blended with shrinkage - reducing agent , polypropylene fiber and expansion agent can reduce its own shrinkage while can ’ t worsen its own other properties , it is undoubted that modification of stone ballast block is beneficial to prevent crack in wall filled with stone ballast block , because these modification materials can respectively reduce , restrain and compensate shrinkage of concrete 在混凝土砌块中掺加减缩剂、聚丙烯纤维和膨胀剂等减缩、限缩和补偿收缩材料如能降低砌块的收缩率,且不劣化砌块的其它性能,则无疑有利于砌块墙体的开裂防治。首先进行砌块材料的改性试验研究。