MATEC Web Conf.
Volume 253, 20192018 International Conference on Materials Science and Manufacturing Engineering (MSME 2018)
|Number of page(s)||9|
|Section||Material Properties & Characterization|
|Published online||14 January 2019|
Volume Deformation Characteristics of Concrete Mixture during Thermal Curing Process
School of Civil Engineering, Central South University, No 22 South Shaoshan Rd, 410075, Changsha, Hunan, PR China
a Corresponding author : Niesh2013@126.com
Expansion deformation of concrete mixture during steam curing process was a kind of unrecoverable volume expansion which would definitely affect the performance of concrete component. Because there were a few researches on expansion deformation of concrete mixture during thermal curing process, a new test method composed of constant temperature water bath, eddy current measurement sensor and data processing program was developed to measure the expansion deformation. The volume deformation characteristics of a typical concrete used for preparing track slab of China high-speed railway were investigated. Test results indicated that volume deformation of concrete mixture could be divided into 2 stages. One was rapid expansion at heating stage and another one was slow shrinkage at constant temperature stage. Besides, the addition of combination of flying ash, slag, nano-silica and nano-calcium carbonate was benefit for controlling the eventual expansion deformation during the whole thermal curing process. Study could be an important reference for heightening quality of steam-cured concrete.
© The Authors, published by EDP Sciences, 2019
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