Intent 1:
To limit the probability of:
- an excessively high cement/aggregate ratio, which could
lead to poor workability, excessive compressive strength and attendant
high shrinkage, which could lead to tensile stresses and the cracking
of mortar or masonry units, or
- an excessively low cement/aggregate ratio, which could
lead to weak, porous mortar and inadequate bonding with masonry units.
This is to limit the probability of compromised structural
integrity, which could lead to:
- the structural failure of masonry construction,
- where masonry construction is part of an environmental
separator, the excessive deformation, displacement or failure of required
environmental separation elements, which could lead to deterioration,
which could lead to further compromised structural integrity, or
- in assemblies exposed to moisture or the exterior, damage
and deterioration, which could lead to further compromised structural
integrity.
This is to limit the probability of harm to persons.