The aim of this study is to determine the physical properties of the polymer in plasticizers used for self-compacting cement pastes by environmental scanning electron microscopy (ESEM) method. Images of fresh cement paste containing cement, water, and plasticizer prepared by using 3 different types of plasticizer were examined by ESEM. Lignosulfonate-based, naphthalene sulfonate-based, and polycarboxylate-based plasticizers were added to the cement paste at a rate of 1% by weight of the cement. Images of the fresh cement pastes were obtained using ESEM within the first 3−5 min after mixing. As a result, the presence of electrostatic and steric effect forces of cement pastes prepared with the polycarboxylate-based additive was determined by ESEM analysis. In the ESEM analysis of the self-compacting cement paste, the diameter of the polymer that forms the steric force effect of the polycarboxylate-based additive was measured as 100−160 nm and the polymer length was 1−2 μm. The presence of an electrostatic force was determined from the brightness around the cement particles by ESEM image analysis.

本研究的目的是通过环境扫描电子显微镜 (ESEM) 方法确定用于自密实水泥浆的增塑剂中聚合物的物理性质。用 ESEM 检查了用 3 种不同类型的增塑剂制备的含有水泥、水和增塑剂的新鲜水泥浆的图像。将木质素磺酸盐基、萘磺酸盐基和聚羧酸盐基增塑剂以水泥重量的 1% 的比例添加到水泥浆中。在混合后的前 3-5 分钟内使用 ESEM 获得新鲜水泥浆的图像。因此，通过 ESEM 分析确定了用聚羧酸盐基添加剂制备的水泥浆的静电和空间效应力的存在。在自密实水泥浆体的 ESEM 分析中，形成基于聚羧酸盐的添加剂的立体力效应的聚合物的直径测量为100-160nm，聚合物长度为1-2μm。通过 ESEM 图像分析从水泥颗粒周围的亮度确定静电力的存在。