ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Aggregate with a water content 〈1 wt % is normally needed for the production of polymer concrete (PC). This increases the cost and complexity of the process. In this study, PC with a compressive strength of 〉2000 psi (〉13.78 MPa) at an age of 1 hr at 24°C was produced by mixing resorcinol phenol-formaldehyde (RPF) resin with portland cement and aggregate containing 1-10% water. The addition of ∼14.7-17.5% type III portland cement to the PC formulation produced an acceleration in the rate of the condensation-type polymerization reaction and improved the properties of the composite. The cause of the accelerative effect was found to be the electropositive bivalent metallic ions of calcium and magnesium released from the cement grains in an aqueous medium. Conversely, the trivalent metallic ions from cement such as Al3+ and Fe3+ have no effect on the rate of polymerization of RPF resin.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1981.070260502
