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Hydrogen-rich water revealed benefits in controlling the physical and mechanical performances of cement mortar

Title
Hydrogen-rich water revealed benefits in controlling the physical and mechanical performances of cement mortar
Author
조병완
Keywords
Cement mortar; Admixture; Hydrogen-rich water; Physical and mechanical properties; Analytical model
Issue Date
2015-12
Publisher
ELSEVIER SCI LTD
Citation
CONSTRUCTION AND BUILDING MATERIALS, v. 100, Page. 31-39
Abstract
The present investigation deals with the effectiveness of hydrogen-rich water in controlling the physical and mechanical performances of cement mortar. In this study, the different concentrations of hydrogen-rich water (0.2, 0.3, 0.4, and 0.5 ppm) were used to fabricate the mortar samples. The impact of the hydrogen-rich water was evaluated analyzing the setting time, flow table value, bulk density, water absorption, apparent porosity, compressive strength and flexural strength of the cement mortar samples. Analyzing the results, the final setting time of the control, as well as 0.5 ppm hydrogen-rich water based cement, is measured to be 257 +/- 3 min and 14 +/- 3 mm, respectively. Additionally, the compressive as well as flexural strength of 7 days cured 0.5 ppm hydrogen-rich water based cement mortar is found to be 59% and 30% higher, respectively, as compared to that of the control mortar. This could be primarily governed by the formation of the greater extent of hydrated cement product in the presence of hydrogen-rich water. Therefore, it is demonstrated that the hydrogen-rich water behaves like a cement set accelerator admixture. Finally, a model has been proposed to explain the overall performances of hydrogen water based cement mortar. (C) 2015 Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0950061815303755?via%3Dihubhttp://hdl.handle.net/20.500.11754/29546
ISSN
0950-0618; 1879-0526
DOI
10.1016/j.conbuildmat.2015.09.014
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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