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http://dx.doi.org/10.7844/kirr.2015.24.1.12

Effect of Gypsum on Hydration Properties of Natural Hydraulic Lime  

Moon, Ki-Yeon (Korea Institute of Limestone and Advanced Materials)
Choi, Moon-Kwan (Korea Institute of Limestone and Advanced Materials)
Cho, Kye-Hong (Korea Institute of Limestone and Advanced Materials)
Cho, Jin-Sang (Korea Institute of Limestone and Advanced Materials)
Ahn, Ji-Whan (Korea Institute of Geoscience and Mineral Resources)
Hong, Chang-Woo (Department of Civil Engineering, Korea National University of Transportation)
Publication Information
Resources Recycling / v.24, no.1, 2015 , pp. 12-20 More about this Journal
Abstract
In this study, change of hydration property with contents and type of gypsum in ternary natural hydraulic lime containing blast furnace slag and gypsum was investigated. Anhydrite, hemihydrate and dihydrate were added 3 % and 10 %, respectively in natural hydraulic lime adding blast furnace slag 20 %. Hydration and physical behavior due to solubility and reactivity of different types of gypsum were analyzed in early hydration. As a result of analysis of hydration properties, in all samples, hydrates such as ettringite and C-S-H were produced in early hydration, and amount of hydrates with increase of hydration time was increased. In the case of compressive strength, when contents of gypsum are 3 %, it was higher compressive strength than other specimens. At hydration 28 days, for addition of anhydrite and hemihydrate, compressive strength was more than adding dihydrate.
Keywords
Natural hydraulic lime; Blast furnace slag; Anhydrite; Hemihydrate; Dihydrate; hydration;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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