Article ID Journal Published Year Pages File Type
6722017 Construction and Building Materials 2014 8 Pages PDF
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, 12 wt.%; cement-aggregate ratio, 1:2.5; defoamer-cement ratio, 0.8 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.
Related Topics
Physical Sciences and Engineering Engineering Civil and Structural Engineering
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