标准编号：ISO 21914:2019
中文名称：纤维增强水泥基复合材料的四点弯曲试验方法 弯矩 曲率曲线
英文名称：Test methods for fibre-reinforced cementitious composites — Bending moment — Curvature curve by four-point bending test
发布日期：2019-07
标准范围
This document specifies the test method for obtaining bending moment-curvature curves of fibre- reinforced cementitious composites (FRCCs) through four-point bending test of prism specimens.
It is applicable to FRCCs that show separated multiple cracks under pure bending before maximum load. NOTE Separated multiple cracks means two or more independent cracks visible to the eye occurring in the constant moment span from the bottom side over half depth of the specimen before maximum load is observed, as shown in Figure 1. For the purpose of confirmation of cracks, spraying up the specimen surface using an alcohol solution or acetone makes observations easier. The formation of multiple cracks is associated with deflection hardening behaviour. For FRCCs that do not show separated multiple cracks, see ISO 19044.
标准预览图
立即下载标准文件