Characterization data of reference industrial polycarboxylate superplasticizer VP 2020/15.2 used for Priority Program DFG SPP 2005 “Opus Fluidum Futurum - Rheology of reactive, multiscale, multiphase construction materials”

An industrial polycarboxylate superplasticizer sample has been chosen to be used in the Priority Program 2005 of the German Research Foundation (DFG SPP 2005). The molecular properties such as molar masses (Mw, Mn), polydispersity index (PDI) and macromononmer conversion rate of this superplasticizer sample were determined via Size Exclusion Chromatography (SEC) and its specific anionic charge amount was obtained via charge titration. Furthermore, the dispersing effectiveness of this superplasticizer sample was assessed through ‘min-slump’ tests in pure OPC (CEM I 42.5 R) and in a limestone-calcined clay (LCC) cement. Moreover, adsorption of the superplasticizer on both cements and dosage-dependent development of the zeta potential of the cement suspensions were captured. The data shall be used for the ongoing research within the Priority Program.本数据集选取一款工业级聚羧酸系减水剂（polycarboxylate superplasticizer）样品，用于德国研究基金会（German Research Foundation，DFG）优先项目2005（DFG SPP 2005）。通过体积排阻色谱（Size Exclusion Chromatography，SEC）测定了该减水剂样品的摩尔质量（重均摩尔质量Mw、数均摩尔质量Mn）、多分散性指数（PDI）及大分子单体转化率，并通过电荷滴定法测得其特定阴离子电荷量。此外，分别在纯硅酸盐水泥（CEM I 42.5 R）与石灰石煅烧黏土水泥（limestone-calcined clay cement，LCC）体系中开展“最小坍落度”试验，以评估该减水剂的分散性能。同时还表征了该减水剂在两种水泥表面的吸附行为，以及水泥悬浮液的ζ电位（zeta potential）随掺量的变化规律。本数据集将用于该优先项目项下的后续研究工作。