The impact of two different dialyzed styrene-acrylate polymer dispersions on the early hydration of OPC was studied. The polymer particles of both dispersions show a similar particle size distribution and high charge due to carboxylic groups on the surface of the particles. Both dispersions also show similar adsorption behavior. The hydration of the OPC was studied at a polymer concentration below the initial adsorption in order to evaluate possible reasons for the interaction of the polymer particles with cement hydration. It can be shown that the polymer particle with the lower glass transition temperature Tg shows a stronger impact on cement hydration, which cannot be explained by any influence on the pore solution composition or the initial dissolution of cement phases. Hence, the adsorption mechanism seems to be the most likely cause of the interaction of the polymers with hydrating cement.

中文翻译：

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聚合物的玻璃化转变温度 (Tg) 对早期 OPC 水合的影响：对热流、相演变和孔溶液化学的完整研究

研究了两种不同的透析苯乙烯-丙烯酸酯聚合物分散体对 OPC 早期水合的影响。由于颗粒表面上的羧基，两种分散体的聚合物颗粒显示出相似的粒度分布和高电荷。两种分散体也表现出相似的吸附行为。在低于初始吸附的聚合物浓度下研究 OPC 的水化，以评估聚合物颗粒与水泥水化相互作用的可能原因。可以看出，具有较低玻璃化转变温度 Tg 的聚合物颗粒对水泥水化的影响更大，这不能用对孔隙溶液组成或水泥相的初始溶解的任何影响来解释。因此，