Research for determination conversion coefficient of compression strength of ultra high performance concrete (UHPC)

Abstract

In Vietnam, Ultra High Performance Concrete (UHPC) technology is receiving more and more attention and is widely applied in the construction of general construction infrastructure, as well as traffic infrastructure (road bridges). But because we have not yet issued a set of National Standards on UHPC as well as the differences between foreign standards, the research, structural
design and acceptance and assessment still face certain difficulties. Typical is the conversion of strength values on different specimen sizes such as cylinders and cubes. This article will present studies on the influence of mold size as well as the conversion coefficient of UHPC compressive strength test results.

Keywords: Ultra High Performance Concrete – UHPC; test mould; compressive strength; cylinders test mould; cube test mould; conversion coefficient of strength.