Study on Influences of Superplasticizer with Waste Plexiglas (WPS) on Cement Paste and Mortar
In this paper, superplasticizer was synthesized from waste plexiglas and sodium allysulfonate (WPS). Poly(methyl methacrylate-co-ethyl acrylate) grafling sodium allysulfonate (PMMA-g-AS) was prepared through reactive extrusion in self-single screw extruder and hydrolysis reaction. The structures of the WPS were characterized by FT-IR spectrometer. The results show that structures of the WPS are clear. Properties of WPS and traditional naphthalene sulfonated formaldehyde condensates (FDN) were investigated, when water-cement ratio (W/C = 0.29) and the dosage of superplasticizer is 0.6 wt.% of cement, water reducing rate of mortar is 22.1%, which is 7.3% higher than that of FDN. BWP of the mortar of WPS is 1.4%. In addition, the compressive strengths of mortar of 3 d, 7 d and 28 d are higher than that of FDN, respectively, indicating that over-all performance of WPS reaches the standard of superplasticizer and its ratio of performance to cost is higher than FDN.
Liangchi Zhang, Chunliang Zhang and Zichen Chen
G. Zheng et al., "Study on Influences of Superplasticizer with Waste Plexiglas (WPS) on Cement Paste and Mortar", Advanced Materials Research, Vols. 328-330, pp. 579-582, 2011