Title: Maturity Function for Concretes Made With Various Cements and Admixtures

Author(s): Nicholas J. Carino and Rajesh C. Tank

Publication: Materials Journal

Volume: 89

Issue: 2

Appears on pages(s): 188-196

Keywords: admixtures; cements; concretes; mathematical models; maturity; models; mortars (materials); strength; temperature; Materials Research

DOI: 10.14359/2275

Date: 3/1/1992

Abstract:
The "rate constant model" is proposed for estimating relative strength gain of concrete under different isothermal curing conditions. The key feature of the model is the relationship between curing temperature and the rate constant for relative strength development. The strength-versus-age relationships of seven concrete and mortar mixtures under three curing temperatures were studied. The rate constants were determined by using an hyperbolic strength-age function. It was found that a simple exponential function described the observed variations of the rate constant with curing temperature. It is shown that the relative strength development of concrete can be estimated from its temperature history using parameters determined experimentally from tests of isothermally cured mortar specimens.