Title:
Properties of Polymer-Modified Mortars Using Styrene-Butyl Acrylate Latexes With Various Monomer Ratios
Author(s):
Yoshihiko Ohama, Katsunori Demura, Masami Hamatsu, and Masara Kakegawa
Publication:
Materials Journal
Volume:
88
Issue:
1
Appears on pages(s):
55-61
Keywords:
acrylic resins; drying shrinkage; latex (plastics); monomers; plastics, polymers, and resins; polymer-cement concrete; porosity; strength; styrene; water; Material Research
DOI:
10.14359/2374
Date:
1/1/1991
Abstract:
The effect of the monomer ratio of copolymer latexes, such as styrene-butadiene and ethylene-vinyl acetate latexes, on the properties of polymer-modified mortars using the latexes has already been published in a few papers, but such an effect relating to styrene-acrylic ester-modified mortars has not surfaced until recently. This paper deals with the effect of the monomer ratio on the typical properties of the polymer-modified mortars with styrene-butyl acrylate latexes. The polymer-modified mortars using the styrene-butyl acrylate latexes polymerized with various styrene-butyl acrylate monomer ratios are prepared with different polymer-cement ratios, and tested for pore-size distribution, flexural and compressive strengths, water absorption, and drying shrinkage. From the test results, the effects of the monomer ratio and polymer-cement ratio on their typical properties are discussed. In conclusion, the properties are affected to a great extent by both monomer ratio and polymer-cement ratio.