Applied Activation Techniques on Cement-Slag Mortars and Concretes Год выпуска: 2012Автор: Fathollah SajediИздательство: LAP Lambert Academic PublishingСтраниц: 300ISBN: 9783847338956Описание The use of ground granulated blast furnace slag (ggbfs) as a replacement material instead of cement has many advantages from environmental and economic viewpoints. Ggbfs improves the mechanical properties, but it is a material with latent potential whereas mortars and concretes incorporating ggbfs have lower early strength compared to cement mortars and concretes. This is a major loss and in order to overcome, it needs to be activated. Prior to activation, the optimum level of cement replaced with slag was determined within the range of 40-50% and subsequently an optimum level of 50% was adopted for all the test mixes. Following this, seven methods of activation were used as chemical, thermal, mechanical, chemical-thermal, chemical-mechanical, thermal-mechanical and chemical-thermal-mechanical. The most effective method thermal-mechanical gave the strength levels 3 and 7 days as 62 and 68 MPa. It was proven that some of the activation methods do not have significant effects on...
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Наталья Большое спасибо, после консультаций с вами у руководителя особых замечаний не возникло.
