氯氧镁水泥浆体水化相及其对强度指标影响初探

本文力图从合成氯氧镁水泥的纯相入手,研究浆体的基本水化相及其相变规律。研究表明,用正确的配比,采用人工合成的方法,可以得到氯氧镁水泥的基本水化相,即5·1·8和3·1·8,并指出了这两种水化相的变化规律。采用不同浓度的MgCl_2溶液配制的氯氧镁水泥浆体,其水化相主要是5·1·8和Mg(OH)_2,采用半定量的计算方法,可以得到这两种水化相之比与浆体强度的对应关系,因而正确选择水化相的比例,可以获得最佳强度的水泥浆体。     

HYDRATION PHASES IN MAGNESIUM OXYCHLORIDE CEMENT PASTE AND THEIR INFLUENCE ON THE STRENGTH INDEX

The study is for the purpose of synthesis-ing the pure phases of magnesium oxychloridecement and investigating the basic hydrationphases and the patterns of phase changes.Theresults suggest that the artificial synthesisbased on the correct formulations can yieldthe basic hydration phases of magnesiumoxychloride,i.e.5.1.8 and 3.1.8.The patternsof change between the two phases are described.The hydration phases in magnesiumoxychloride cement prepared with MgCl_2 solu-tions of different concentrations are mainly5.1.8 and Mg(OH)_2.The relationship betweenthe ratio of the hydration phases and thestrength of the cement was calculated using asemiquantitative method.Based on thisrelationship,the cement paste with theoptimum strength can be obtained by choosingthe proper ratio of the hydration phases.     

新型节能非烧粘土砖固化机理的研究

以中国南方劣质红壤土为主要原料,掺入适宜胶结材料制成的节能非烧砖具有能耗低,投资少,工艺简单等突出优点。本文就南方红壤的土质,胶结材料的类型、结构形成及强度发展规律进行了综合的研究、并用X射线衍射,SEM+EDX、压汞试验、化学分析等方法、研究了新型节能非烧砖的结构形成特征。