A method of making a grout composition which reduces the amount of bleed water from grout used in bonded post-tensioned concrete applications is provided. The method includes forming the grout composition by combining copolymers with other materials into a hydraulic cementitious composition. The copolymers are formed from structural components a) to c) and optionally d) which are mono-unsaturated compounds, with a generally linear macromolecular structure. By reducing the amount of bleed water in bonded post-tensioned concrete applications the grout composition provides protection from corrosion for the steel members, including stranded tendons and solid bars. The reduction in the amount of bleed water is achieved without significantly increasing the viscosity of the grout mixture thereby allowing good pumpability, placement, and maintenance of other properties such as resistance to volume change, long working time and acceptable strength development.
本发明提供了一种灌浆料组合物的制造方法,可减少粘结后张法混凝土应用中灌浆料的渗
水量。该方法包括通过将共聚物与其他材料结合成
水力胶凝组合物来形成灌浆组合物。共聚物由结构组分 a) 至 c) 以及可选的 d) 组成,它们都是单不饱和化合物,一般具有线性大分子结构。通过减少粘结后张法混凝土应用中的渗
水量,灌浆组合物可保护钢构件(包括绞合筋和实心钢筋)免受腐蚀。在减少渗出
水量的同时,不会显著增加灌浆混合物的粘度,从而使其具有良好的可泵性、可浇注性,并保持其他特性,如
抗体积变化性、工作时间长和可接受的强度发展。