Not too high

According to the concrete strength grade standard, if the crushing value of stones is 7~8, then it means that this value is within the standard range and is not too high. high. As we all know, there are many types of stones, including sedimentary rocks, igneous rocks, metamorphic rocks, etc. Different types of stones have different crushing standard values. If it is a sedimentary rock stone, its crushing value must be less than or equal to 16. If it is a metamorphic rock or igneous rock stone, its crushing value will be smaller, generally between 10 and 13. It can be seen that the stone crushing value of 7~8 is not too high.