Experimental Research on the Wettability of Recycled Aggregate Concrete with Fly Ash
Yuanchen Guo*, 1, 2, Xue Wang2, Jueshi Qian1
Identifiers and Pagination:Year: 2013
First Page: 232
Last Page: 236
Publisher Id: TOCIEJ-7-232
Article History:Received Date: 20/7/2013
Revision Received Date: 15/9/2013
Acceptance Date: 16/9/2013
Electronic publication date: 15/11/2013
Collection year: 2013
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Material adsorption, the reverse process of evaporation diffusion, directly reflects the wettability of materials. Wettability is one of the main factors that affect the drying shrinkage of materials. A device that measures the wettability of recycled aggregate concrete (RAC) with fly ash is proposed in this study based on pore structure theory. The isothermal absorption curve of RAC is examined with different fly ash contents. Results show that as the recycled aggregate replacement rate increases, the moisture absorption capacity of RAC gradually increases. The addition of fly ash improves the porosity of RAC structures and reduces material wettability.