Ulster University Logo

Investigation of the moisture influence on permeation properties of alkali-activated slag concrete

Yang, Kai, Nanukuttan, Sreejith, Yang, Changhui, Magee, Bryan, Ye, Jianxiong and Basheer, PAM (2016) Investigation of the moisture influence on permeation properties of alkali-activated slag concrete. In: International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Concrete with Supplementary Cementitious Materials, Technical University of Denmark, Lyngby, Denmark. RILEM. 10 pp. [Conference contribution]

Full text not available from this repository.

URL: https://files.conferencemanager.dk/medialibrary/2A179311-431D-479F-9B86-AC05B769477E/images/Concrete_Supp_Cem_Mat_conf_proceedings.pdf

Abstract

This study reports an experimental investigation designed to assess the influence of near- surface moisture contents on permeation properties of alkali-activated slag concrete (AASC). Three AASC and normal concretes with compressive strength grades ranging from C30 to C60 were tested under five different drying periods. Assessment of moisture distribution was achieved using 100 mm diameter cores with drilled cavities. Results indicate that air permeability of AASC is very sensitive to the moisture content and its spatial distribution, especially at relative humidity above 65%. To control the influence of moisture on permeation testing, the recommendation of this paper is that AASC specimens should be dried in controlled conditions at 40 oC for 10 days prior to testing. It was also concluded from this study that AASC tends to perform less well, in terms of air permeability and sorptivity, than normal concrete for a given strength grade. This conclusion reinforces the need to further examine AASC properties prior to its widespread practical use.

Item Type:Conference contribution (Paper)
Keywords:permeation, durability, alkali-activated slag concrete
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Studies Allied to Built Environment Research (SABER)
ID Code:36912
Deposited By: Dr Bryan Magee
Deposited On:13 Feb 2017 15:18
Last Modified:17 Oct 2017 16:27

Repository Staff Only: item control page