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Physicochemical characteristics of acrylic‐acid polymer‐impregnated cement pastes
Author(s) -
Gad E. A. M.,
ElSukkary M. M. A.,
Sayed W. M.,
AboElEnein S. A.
Publication year - 1995
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280620315
Subject(s) - materials science , compressive strength , cement , portland cement , acrylic acid , composite material , curing (chemistry) , polymerization , monomer , polymer , benzoyl peroxide
Various Portland cement pastes were made using water cement ratios of 0·20, 0·25, 0·35 or 0·40 and then cured for 1, 3, 7, 28, 90 or 180 days. These pastes were impregnated with acrylic acid monomer under vacuum and the monomer‐impregnated samples were then treated at two different temperatures, 40 or 60°C, for the polymerization process, using benzoyl peroxide as initiator. Several physicochemical studies were carried out on each cement paste; these studies include compressive strength tests, bulk density, compressive strength versus gel/space ratio relationships, polymer load, X‐ray diffraction analysis and differential thermal analysis. Results have indicated that compressive strength improvement in acrylic acid‐polymer impregnated cement pastes is mainly dependent on initial water/cement ratio, curing time and gel/space ratio. The results of X‐ray diffraction analysis and differential thermal analysis indicated that the intrusion of polymer into the cement paste matrix does not affect the phase composition of the Portland cement hydration products.