Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6722017 | Construction and Building Materials | 2014 | 8 Pages |
Abstract
Using Poly(styrene-co-hydroxyethyl methacrylate) (P(St-co-HEMA)) microsphere with a core-shell structure as the modifier, a new polymer-modified waterproof mortar was developed with steel slag, iron tailings and fly ash as aggregates. Effects of cement-aggregate ratio, polymer-cement ratio and defoamer-cement ratio on performances of this mortar were investigated. The factor design was used to determine the optimal conditions: polymer-cement ratio, 12Â wt.%; cement-aggregate ratio, 1:2.5; defoamer-cement ratio, 0.8Â wt.%. The product conformed to Chinese norms. Furthermore, the mortar with P(St-co-HEMA) as the modifier gave better mechanical properties and water resistance compared to those with commercial ethylene-vinyl acetate copolymer (EVA) and styrene-acrylic copolymer (SAE) as modifiers. Microstructures of these polymer-modified mortars were compared and discussed.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Liu Shao-jie, Hu Qian-qian, Zhao Feng-qing, Chu Xiao-meng,