How to let fireproof and pouring makings tenacity increases

The client is being bought fireproof and pouring what should look when makings is fireproof and pouring the compression intensity of makings, choose actually high quality fireproof and pouring makings do not look only only

Its compression intensity, also want to see its tenacity at the same time. Because fireproof and pouring the tenacity of makings is to control its to appear the efficient way of crackle. So how to let

Fireproof and pouring does the tenacity of makings increase?
  Change its tenacity to be about to take corresponding step first, make its structure is changed, come of block up crackle patulous, make its achieve the result that improves tenacity

. At the same time fireproof and pouring the structure of makings also exists have drawback, for example air hole is easy when the master piece outside getting is used product crackle. Say the change is fireproof so irrigate

Note the structure of makings this measure can rise fireproof and pouring the tenacity of makings.