Paper Title:
Influence of SO3 Content on Drying Shrinkage Cracking Resistance of Cement-Fly Ash Stabilized Crushed-Stones
  Abstract

The cement-fly ash stabilized crushed-stones are prepared with different cements, which SO3 contents are 1.8%,2.6%,3.4%,4.2%,5.0%,5.8% and 8.8%,and their 28d splitting strengths, 28d resilient modulus’s, expansion -shrinkage and dry shrink anti cracking coefficients are studied. On these bases, the influence of SO3 content of cement on shrinkage cracking resistance is analyzed. The mechanism of compensating shrinkage by micro expansion in pavement base and the function of SO3 on cement-fly ash binder are also explored in paper. It is proved that the increase of SO3 content in a suitable scope (1.8%-5.8%) can improve the drying shrinkage cracking resistance of cement-fly ash stabilized crushed-stones when the content of fly ash is 10%。But the structure and the performance of materials will be destroyed if the SO3 content of cement increases excessively (>8.8%).

  Info
Periodical
Materials Science Forum (Volumes 620-622)
Edited by
Hyungsun Kim, JienFeng Yang, Tohru Sekino and Soo Wohn Lee
Pages
279-282
DOI
10.4028/www.scientific.net/MSF.620-622.279
Citation
X. Chen, M. K. Zhou, Z. Y. Fan, "Influence of SO3 Content on Drying Shrinkage Cracking Resistance of Cement-Fly Ash Stabilized Crushed-Stones", Materials Science Forum, Vols. 620-622, pp. 279-282, 2009
Online since
April 2009
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