期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 157, 期 -, 页码 151-160出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2017.09.092
关键词
Alkaline activated cements; Volcanic pozzolan; Granulated blast furnace slag; Binary systems; Geopolymers; Synergy
资金
- project PUZOGEOH (COLCIENCIAS - Cementos Argos SA and Universidad del Valle) [592-2012, 0484-2013]
- Center for Excellence in New Materials (CENM)
- Instituto de Ciencias de la Construccion Eduardo Torroja (IETcc-CSIC) in Madrid-Spain
- COLCIENCIAS [617]
- Ministry of Economy, Industry and Competitiveness [BIA2013-47876-C2-1-P]
The production and characterization of a cement and mortar based on the alkaline activation of a high content (>= 70%) of natural volcanic pozzolan (NP) and the synergic effect of the addition of granulated blast furnace slag (GBFS) up to 30% were performed. NaOH and a mixture of NaOH + Na2SiO3 were used as activators. The results of this study highlight the possibility of obtaining a binder with a compressive strength of up to 125 MPa at 28 days of curing (25 degrees C). The optimal alkaline cement that was obtained can be categorized as GU- and LH-type cement according to the ASTM C1157 standard. (C) 2017 Elsevier Ltd. All rights reserved.
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