Journal of the Society of Materials Science, Japan
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
Original Papers
Fundamental Study on Low-Temperature Autoclaving Focused on the Water Cement Ratio and Silica Fume Content
Shin YAMAGUCHIMasami UZAWANaofumi IWASAKIYoji OGAWAYoshinari ITOHOsamu MACHINAGA
Author information
JOURNALS FREE ACCESS

2013 Volume 62 Issue 10 Pages 615-620

Details
Abstract

This paper describes a fundamental study conducted for establishing a technique of low-temperature autoclave curing, with the focus placed on the water cement ratio and silica fume content. The experimental results showed that silica fume-added specimens cured at 150°C had similar compressive strength to those cured at 180°C. The low-temperature autoclave curing was made possible by the addition of silica fume which increased the gel porosity and reduced the total porosity through accelerated pozzolanic reaction. In addition, the gel porosity did not show significant change against the autoclave curing temperature in the presence of silica fume. This was considered to be the key factor in the mechanism of low-temperature autoclave curing. It was also demonstrated in this study that the presence of tobermolite was not an essential requirement for the high strength development in which C-S-H played a predominant role.

Information related to the author
© 2013 by The Society of Materials Science, Japan
Previous article Next article
feedback
Top