Ordinary cement combined with refractory castable

Refractory castables as a heat-resistant refractory, all materials in the configuration should be heat-resistant materials, but sometimes, due to the use of parts of the refractoriness is not high, the fire rating is not too high, you can reduce The label is used, for example, the refractory cement for its binder is lowered. The same does not affect its heat rating.

Different aggregate selection and match, with the proportion of 30%, 50%, 70%, taking into account the amount of water as little as possible to avoid cracking of concrete when heated, but also on the admixture of different options and match. Therefore, in the determination of the proportion of the first choice of the same strength level of ordinary concrete ratio as the initial ratio, and then select the different aggregate for mixing test to find the appropriate mix. When there are special requirements, you can also improve the strength level, select the appropriate ratio.