在拌合物中加入某种外加剂后,新浇筑的混凝土可在负温下逐渐硬化,这种负温混凝土工艺在工程实践中已被广泛运用。所掺的外加剂称为负温硬化剂,我国已有一些工厂专门生产。但由于产量、性能、价格以及其它各方面原因,应用并不普遍。就大多数施工企业而言,倾向于自行选配。各地为此做了大量的试验研究工作,积累了丰富的经验,提出了种类繁多的配方。但由于各地情 After adding an admixture to the mixture, the newly cast concrete gradually hardens at a negative temperature. This negative temperature concrete process has been widely used in engineering practice. The admixed admixture is called negative temperature hardener, and some factories in China have specialized production. However, due to production, performance, price and other reasons, the application is not universal. For most construction companies, they tend to choose their own. For this purpose, a large number of experimental studies have been conducted in various parts of the country, and a wealth of experience has been accumulated. A wide variety of formulations have been proposed. But because of the situation