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近十几年来人们开发了几种新的高性能混凝土,具有较高或超高强度、自密实的、用常规重质或轻质集料配制的混凝土即属此类。这些混凝土在结构工程中得到实际应用先决条件除了强度和耐久性以外,还包括其与时间相关的变形性能,这同样需要有足够的认识,本文认为在这方面还存在知识缺陷。下文将对高性能混凝土蠕变和收缩的有关知识进行概括介绍,在此还包括对高强轻质混凝土变形性能方面新的研究成果进行简单介绍
In recent decades, several new high-performance concrete have been developed and are of higher or super high strength, self-compacting concrete formulated with conventional heavy or light aggregate. In addition to the strength and durability, these concrete-related pre-requisites of practical application in structural engineering, including their time-dependent deformation properties, also need to be sufficiently recognized that there is also a knowledge deficit in this regard. The following text will give an overview of the creep and shrinkage of high performance concrete, which also includes a brief introduction of the new research results on the deformability of high strength lightweight concrete