REVIEW OF MECHANICAL PROPERTIES OF HSC AT
REVIEW OF MECHANICAL PROPERTIES OF HSC AT
复制标题
HSC AT 机械性能综述
DOI：
--
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
N. Carino
中科院分区：
文献类型：
--
作者：
L. Phan;N. Carino
混凝土的力学性能的实验结果汇编时，暴露于快速加热，如在火灾中。重点放在具有高原始抗压强度的混凝土上，即高强混凝土（HSC）。编译的测试数据进行了分类的测试方法和类型的骨料使用和比较的行为差异。对比结果表明，在室温至约450°C的范围内，HSC和普通强度混凝土（NSC）的力学性能存在明显差异。当温度高于450°C时，差异缩小。还提出了这些测试结果与现有的规范规定的高温对混凝土强度的影响进行了比较。结果表明，欧洲规范的规定和欧洲国际杜比顿（CEB）的设计曲线更适用于NSC比HSC。事实上，与HSC测试结果相比，这些规定是不安全的。研究表明，缺乏轻质高强混凝土和高强混凝土在恒定预加载下加热来模拟高强混凝土柱的应力条件的实验数据。
A compilation of experimental results on the mechanical properties of concrete when exposed to rapid heating as in a fire are presented. Emphasis is placed on concretes with high original compressive strengths, that is, high-strength concretes (HSCs). The compiled test data were categorized by the test methods and the types of aggregate used and compared for behavioral differences. The comparison revealed distinct difference in mechanical properties of HSC and normal-strength concrete (NSC) in the range between room temperature and approximately 450°C. The differences narrowed at temperature above 450°C. Also presented is a comparison of these test results with existing code provisions on the effects of elevated temperature on concrete strength. It is shown that the Eurocode provisions and the Comites Euro-International Du Beton (CEB) design curves are more applicable to NSC than to HSC. In fact, these provisions are unsafe when compared with HSC test results. The study showed a lack of experimental data for lightweight HSC and HSC heated under a constant preload to simulate the stress conditions in HSC columns.