Do I understand correctly that if the water resistance grade W4 is indicated for concrete, then at atmospheric pressure a sample cylinder 150 mm high from such concrete will not allow water to pass through from a water column 30 m high (1 atm is equivalent to a balanced column of 10 m of water column. )? And if this concrete sample is at a pressure of 3.8 amt, then the height of the water column should not exceed 2 m?
Thank you, it’s clear and understandable with closed and open seams. What are seams with a width of 1 to 5 mm called? They are most common in cladding.
Could you explain what these groups are and how to use them?
Do I understand correctly that if the water resistance grade W4 is indicated for concrete, then at atmospheric pressure a sample cylinder 150 mm high from such concrete will not allow water to pass through from a water column 30 m high (1 atm is equivalent to a balanced column of 10 m of water column. )? And if this concrete sample is at a pressure of 3.8 amt, then the height of the water column should not exceed 2 m?
What is the Mohs scale? How is surface hardness measured? What values on this scale are typical for ceramic tiles?
Thank you, it’s clear and understandable with closed and open seams. What are seams with a width of 1 to 5 mm called? They are most common in cladding.
What are we talking about here? What are open and closed joints? The seams between the tiles or something.