阅读说明：本技术 用于任选含辅助胶凝材料的水泥、砂浆或混凝土组合物的凝结硬化加速剂及该加速剂的用途 (Setting and hardening accelerator for cement, mortar or concrete compositions optionally containing supplementary cementitious materials and use of the accelerator ) 是由 沃尔弗拉姆·弗兰克 希尔德·托默森 于 2019-03-05 设计创作，主要内容包括：本申请涉及用于任选地包含水泥替代材料(CSM)的水泥、砂浆或混凝土组合物的凝结和硬化加速剂。加速剂组合物包含硝酸盐水溶液和碱性氢氧化物。特别地,含水加速剂组合物包含30至55w/w％的硝酸盐(以硝酸盐溶液的形式)以及0.02至0.1w/w％的碱性氢氧化物(其溶解在硝酸盐溶液中并且任选地作为加速剂组合物中的氢氧化物沉淀),其中加速剂组合物的pH为至少9.0。在水泥、砂浆或混凝土组合物包含CSM的情况下,加速剂组合物的pH为至少12.0。本申请还涉及根据本申请的加速剂组合物的用途,并且涉及通过使组合物与根据本申请的加速剂(特别是在低温)反应而使水泥、砂浆或混凝土组合物加速的方法。(The present application relates to setting and hardening accelerators for cement, mortar or concrete compositions optionally comprising cement replacement materials (CSM). The accelerator composition comprises an aqueous nitrate solution and an alkaline hydroxide. In particular, the aqueous accelerator composition comprises 30 to 55 w/w% of a nitrate salt (in the form of a nitrate salt solution) and 0.02 to 0.1 w/w% of an alkaline hydroxide (which is dissolved in the nitrate salt solution and optionally precipitated as hydroxide in the accelerator composition), wherein the pH of the accelerator composition is at least 9.0. Where the cement, mortar or concrete composition comprises a CSM, the pH of the accelerator composition is at least 12.0. The present application also relates to the use of the accelerator composition according to the present application and to a method for accelerating a cement, mortar or concrete composition by reacting the composition with an accelerator according to the present application, in particular at low temperatures.)