ACI SP-259

Sponsored by ACI Committee 231

This CD-ROM consists of twelve papers that were presented at technical sessions sponsored by ACI committee 231, Properties of Concrete at Early Ages, at the 2009 ACI Spring Convention in San Antonio, TX. The subject matter of these papers includes: (1) the development of concrete properties and microstructure at early ages, (2) test methods for assessing early-age volume change and cracking potential, (3) construction operations timing, (4) computer simulations of early-age behavior, and (5) mechanisms that end the concrete dormant period.

Contents: SP-259--1
Early Age Stiffening of Cement Paste Using Ultrasonic Wave Reflection.
by C. Chung, J.S. Popovics, and L.J. Struble

SP-259--2
Experimental Study on Restrained Drying Shrinkage Cracking of Concrete Using Acoustic Emission.
by M. Ozawa, S. Uchida, T. Kamada, and H. Morimoto

SP-259--3
Continuous Ultrasonic Assessment of Elastic Modulus of Cementitious Materials through Setting and Early Strength Gain.
by K.V. Subramaniam and J. Lee

SP-259--4
Early Age Properties Development of Concrete with Different Slag Contents
by A. Darquennes, S. Staquet, A. Kamen, M.-P. Delplancke-Ogletree, and B. Espion

SP-259--5
Identifying the Fluid-to-Solid Transition in Cementitious Materials at Early Ages Using Ultrasonic Wave Velocity and Computer Simulation.
by M. Dehadrai, G. Sant, D. Bentz, and J. Weiss

SP-259--6
Detecting Solidification Using Moisture Transport from Saturated Lightweight Aggregate.
by R. Henkensiefken, G. Sant, T. Nantung, and J. Weiss

SP-259--7
Evaluation of a Quick Heat Generation Index Test for Characterization of Cementitious Materials.

by T.D. Rupnow, V.R. Schaefer, and K. Wang

SP-259--8
Flocculation in Cement Pastes Measured through Use of Laser Microscopy
by R.P. Ferron, C. Negro, and S.P. Shah

SP-259--9
Effects of Accelerating Admixture on Flowable Fill Strength.
by W. Lovencin and F.T. Najafi

SP-259--10
Flocculation Behavior of Cement Pastes Containing Clays and Fly Ash.
by N. Tregger, H. Knai, and S.P. Shah

SP-259--11
Monitoring the Liquid to Solid Transition in Concrete with Conventional Tests.
by J. Abel, R.C.A. Pinto, and K.C. Hover

SP-259--12
Simulation of Volume Changes of Cement Paste at Early Age.
by I. Jaouadi, A. Guidoum, and K. Scrivenerstandard.