A Comparison of test methods for early-age behavior of cementitious materials

Title: A Comparison of test methods for early-age behavior of cementitious materials
Author(s): J.W. Bullard, M. D’Ambrosia, Z. Grasley, W. Hansen, N. Kidner, D. Lange, P. Lura, T.O. Mason, J. Moon, F. Rajabipour, G. Sant
Paper category : conference
Book title: 2nd International RILEM Symposium on Advances in Concrete through Science and Engineering
Editor(s): J. Marchand, B. Bissonnette, R. Gagné, M. Jolin and F. Paradis
Print-ISBN: 2-35158-003-6
e-ISBN: 2351580028
Publisher: RILEM Publications SARL
Publication year: 2006
Nb references: 27
Language: English

Abstract: A wide range of tests has been reported that can be used for probing different aspects of the chemical and structural properties of cement paste and concrete at early ages. In principle, these tests should be complementary and their results could be integrated to develop a broader understanding of early-age behaviour. Under the auspices of the Center for Advanced Cement Based Materials (ACBM), an inter-laboratory study was undertaken to compare the results of several of these different test methods on a single cement. A large quantity of cement was homogenized by the Cement and Concrete Reference Laboratory (CCRL), as part of their proficiency sample program, and distributed to several ACBM researchers for independent testing. Aggregates for making mortar were supplied from a single source (graded Ottawa sand). Tests on pastes and mortars included calorimetry, compressive strength, Vicat needle penetration, chemical shrinkage, autogenous shrinkage, AC-impedance spectroscopy, time domain reflectometry, and ultrasonic shear wave reflectometry. Numerical simulations of the same materials were undertaken for comparison. Results from these tests will be compared with respect to the way in which they capture solidification and strength development.

Online publication: 2006-08-02
Classification: 3.2 Theme 2: From Fresh to Hardened Concrete
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2351580028.053