RESTRAINED SHRINKAGE TESTS OF FIBER-REINFORCED CONCRETE RING SPECIMENS - EFFECT OF CORE THERMAL-EXPANSION

被引：36

作者：

KOVLER, K

SIKULER, J

BENTUR, A

机构：

[1] National Building Research Institute, Faculty of Civil Engineering, Technion-Israel Institute of Technology, Technion City, Haifa

来源：

MATERIALS AND STRUCTURES | 1993年 / 26卷 / 158期

关键词：

D O I：

10.1007/BF02472616

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Restrained shrinkage tests of fresh concrete using conventional ring specimens with a steel core are sometimes not effective because of their relatively low cracking sensitivity. Modified ring specimens with a Perspex core having a high coefficient of thermal expansion were developed with the object of obtaining a test method which can provide cracking sensitivity results within a short time. An analysis of stress distribution is presented, taking into account the geometry and elasticity characteristics of the ring and core in specimens subjected to restrained shrinkage and heating. For tests of fresh plain and fibre-reinforced concretes, a Perspex core with additional stress concentrators (wedges) was used.

引用

页码：231 / 237

页数：7