EFFECT OF THE SYNTHESIS TEMPERATURE OF POLYCARBOXYLATE-BASED SUPERPLASTICIZER ON THE PERFORMANCE OF CONCRETE

Good quality Polycarboxylate superplasticizers (PCEs) production is increasingly important due to development of theconstruction industry in the world. In this study, modified PCEs were synthesized via free-radical polymerization of TranslatedPolyethylene Glycol (TPEG), Thioglycolic Acid (TGA) and Acrylic Acid (AA), in the presence of initiator and chain transferagent according to molecular structure design principle in different initiatory temperatures (40 and 60 ${}^oC$). The effects of PCEssynthesized at different temperatures on the concrete such as water cutting, workability and compressive strength of 7 and 28 days’have been examined. Fourier transform infrared spectroscopy (FTIR) was used for structural characterization.