Factors influencing properties of phosphate cement-based binder for rapid repair of concrete

Authors
Citation
Qb. Yang et Xl. Wu, Factors influencing properties of phosphate cement-based binder for rapid repair of concrete, CEM CONCR R, 29(3), 1999, pp. 389-396
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
CEMENT AND CONCRETE RESEARCH
ISSN journal
0008-8846 → ACNP
Volume
29
Issue
3
Year of publication
1999
Pages
389 - 396
Database
ISI
SICI code
0008-8846(199903)29:3<389:FIPOPC>2.0.ZU;2-7
Abstract
Phosphate cement-based binders were prepared by mixing MgO powder (M) with NH4H2PO4 powder (P) and borax powder (B). Effects of various factors includ ing the amount of retarder B, P/M ratio, fineness of hi, and addition of fl y ash and environment temperature on setting time and mechanical properties of magnesium phosphate cement-based binder (MPB) were investigated. Result s showed that the setting time and early strength of MPB were mainly contro lled by the amount of B, the fineness of M, and temperature, but that these factors had little influence on the final strength of the binder. It is in teresting that MPB sets and hardens within 1 h, even at -10 degrees C. A se tting and hardening mechanism on MPB is proposed. (C) 1999 Elsevier Science Ltd. All rights reserved.