Acessibilidade / Reportar erro
Articles • Matéria (Rio J.) 23 (3) • 2018 • https://doi.org/10.1590/S1517-707620180003.0518   copy

Comparative study between strain gages for determination of autogenous shrinkage

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The Carlson-type strain gages are the most suitable for the measurement of autogenous shrinkage. However, your high cost is usually a limiting factor for your employment. A more economical alternative would be the use of Self-Temperature-Compensation Gages to be embedded in concrete. The main objective of this work was to verify if Self-Temperature-Compensation Gages can be used instead of the Carlson type to determine the autogenous shrinkage in high performance concrete. It was carried out measurements of the autogenous shrinkage, for the same concrete mix, using the two types of extensometers. The difference in the means of the autogenous shrinkage results between these two types of extensometers was typically less than 10x10-6 m/m.

Keywords
high strength concrete; autogenous shrinkage; Carlson

Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro, em cooperação com a Associação Brasileira do Hidrogênio, ABH2 Av. Moniz Aragão, 207, 21941-594, Rio de Janeiro, RJ, Brasil, Tel: +55 (21) 3938-8791 - Rio de Janeiro - RJ - Brazil
E-mail: revmateria@gmail.com
Acompanhe os números deste periódico no seu leitor de RSS