Papers by Keyword: Complex Binder

Abstract: In this article, the effects of different content and compound ratio of low-grade fly ash and limestone powder on the strength, water requirement and adaptability with admixture of green complex binder were studied, and the influence of particle size distribution and particle morphology on its performance was analyzed. The results indicated that the strength decreased obviously with the increase of mineral content. There was an optimum ratio of fly ash and limestone powder (6:4) at a certain mineral content. Water requirement decreased, and the saturated content of admixture points became small with the increasing of limestone powder. The effects of content on the strength were much more than that of particle size distribution for composite cement with high volume of mineral admixtures.

Abstract: The effect of microfiber produced from recycled waste catalyst on microstructure and mechanical strength of cementitious complex binder was analysed. Complex binder reinforced with 1%, 3% and 5% fibers were exposed to 600, 800 and 1000°C for 3h. The influence of annealing temperature on morphology of fiber reinforced complex binder was analyzed applying SEM, XRD techniques. Experimental results showed that reinforcement with 1% of fiber had advantage on mechanical strength of complex binder up to 800°C. Meanwhile addition of 5% of fiber resulted in lowest values of strength and reduced bulk density of complex binder in all firing temperature range.