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According to the equation (4), the ΔL/L0 can be expressed as following. σ is a constant of powder surface tension, a is the material atom radius, t is the sintering time, T is the sintering temperature, r is the sintering neck radius.
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All the mixed materials was cooked to boiling and needed to let it cold before added with fresh milk, collecting cow’s rumen and yeast.
Once again, the combination of material was mixed well and need to let it doing the fermentation process for about 12 to 24 hours.
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Results and Discussion The effect of curing conditions on the mortar strength of FBC ash-cement clinker system FBC ash is essentially one of pozzolanic activity materials, having higher pozzolanic activity relative to other coal ashes, usually used as admixture in concrete.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (Grant No.51142012 and No.50802082), the Programs for Science and Technology Development of Shandong Province, China (Grant No.2011GGX10705 and No.2010GCG20319) and the Natural Science Foundation of Shandong Province, China (Grant No.ZR2010EM058).
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It has been more and more used as machine tool bed materials, especially in the field of precision and high speed cutting.
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