MODIFICATION OF CEMENT MORTARS BY POLYMER LATEX

The polymer systems of vinyl latex, epoxy latex/resin, and phenol form aldehyde were used to modify sand-cement mortar at room temperature. T he compressive strength increased with an increase of the latex/resin concentration, with the addition of CaCl2 or CaCO3, and with the addit ion of superplasticizer. Tensile and flexural strengths also increased with polymer incorporation. The porosity of the modified mortar decre ased with the addition of resin. The percentage of water absorption an d acid solubility were found to decrease for the latex/resin modified samples. (C) 1997 John Wiley & Sons.