近日从国家知识产权专利局传来正式回复:由中建西部建设西南公司成都外加剂厂所研发运用《一种混凝土用抗离析剂及其制备方法》获得发明专利的授权,并认为它“填补了国内混凝土专用抗离析解决混凝土离析问题的技术空白”。建筑工程混凝土泵送施工,最基本也是最重要条件之一是混凝土本身必须在一定时间(通常在120~240分钟)内保持较大流动性的工作性能。即:要求其坍落度损失小,且不泌水、不离析。然而,“环境友好型资源节约型”国策的强制推行和目前国内天然砂日益枯竭的现实,我国早已明确规定不得在江河两畔等处随意开采天然砂。这样,促使众多混 Recently, it came formally from the State Intellectual Property Patent Office. It was authorized by the research and development and application of “a kind of anti-segregation agent for concrete and its preparation method” by the admixture plant in southwest China that builds the western part of China State Construction Industry and believes that it “ Fill the domestic concrete anti-segregation to resolve the problem of concrete separation technology blank ”. Construction Concrete pumping construction, one of the most basic and most important condition is the concrete itself must be a certain period of time (usually 120 to 240 minutes) to maintain a larger mobility of the work performance. Namely: Requires its slump loss is small, and does not bleed, do not leave. However, due to the compulsory implementation of the national policy of “environment-friendly and resource-saving” and the current depletion of natural sand in China, China has already clearly stipulated that natural sand should not be arbitrarily exploited at riverside and other places. In this way, prompting many mixed