混凝土组分对早期抗裂性能影响研究  

Research on the Effect of Constitutes on Cracking Resistance of Concrete at Early Ages

作　　者：李跃[1] 黄俊[2] 彭少民[3] 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074 [2]武汉理工大设计研究院,武汉430070 [3]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《武汉理工大学学报》2007年第S2期66-68,共3页Journal of Wuhan University of Technology

摘　　要：利用国内最新研发的温度-应力试验机针对混凝土的早期抗裂性能进行了一系列研究,得出混凝土早期温度、应力、变形的发展规律。结果表明,温度已不再是唯一影响早期混凝土开裂的决定性因素,应同时考虑混凝土内部温度和应力的发展过程。相对于传统的单因素实验方法,温度-应力试验能真实全面地反映混凝土早期温度、应力、变形及其发展情况,而且综合考虑了影响混凝土早期开裂的其他因素,是目前研究混凝土开裂机理最有效的方法。By using the newest temperature-stress testing machine, the cracking resistance of concrete at early ages is studied and the evolution rules of temperature,stress,deformation are achieved.And conclusions are that: Temperature rising due to hydration heat is not directly correlated with cracking,but the temperature and stress evolution process should be taken into consideration in the same time.Compared with conventional sole factor methods,temperature-stress test can reflect the temperature,stress,deformation and their development at early ages comprehensively,and consider besides the temperature change all factors which influence the early age cracking.

关 键 词：混凝土组分 早期 抗裂性能 温度-应力试验 

分 类 号：TU528[建筑科学—建筑技术科学]