Table of Contents
How do you stop AAC blocks from cracking?
Crack filler for AAC block walls and plasters weberwall crackbond is a single component, easy to use crack filling mortar , specially designed for filling cracks on AAC block walls and plasters. The high bond strength of the mortar reduces further development of cracks.
Can we drill in AAC blocks?
Earthquake Resistant: The light weight property of AAC blocks makes it an ideal construction material. Faster Construction: As the AAC blocks are very convenient to handle and use ordinary tools which are used to cutting the wood such as drill, band saws, etc. can be easily used for AAC blocks.
Is curing required for AAC blocks?
No curing is required neither for AAC blocks or adhesive. High tensile strength is achieved in less time. As the thickness of the adhesive is very thin, it eliminates the shrinkage cracks in joints.
What causes cracks in AAC block walls?
There are many reasons for cracks in AAC block walls – Shifting or settling in the foundation – This is the main reason why masonry units develop cracks. Improper installation of blocks – If the AAC blocks are not installed properly and lack of required skilled workmanship also caused the blocks to develop crack.
What are the causes of cracks in walls?
Shrinkage in blocks or poor quality of blocks may also cause a crack in a wall. Use of higher grade of cement to make mortar. Use of rich cement mortar i.e. the cement content is higher than specified in the design mix. Use of very fine sand to make mortar i.e. higher silt content or use of sand which is not graded properly.
Why do AAC blocks shrink so quickly?
The number one culprit is drying shrinkage. AAC blocks during the process of manufacturing, as they come out of autoclave, contain high amount of residual moisture to the tune of 25\%. This residual moisture leaves the blocks predominantly in the first 48 hours.
What causes cracks in concrete blocks?
Regularly spaced cracks often are caused by shrinkage of the concrete block. The spacing of such shrinkage cracks depends on the moisture content of the block when installed, the amount of the block’s linear shrinkage, and the humidity in the area where it is installed.