§ Mr. Rookerasked the Secretary of State for the Environment how many buildings his Department has inspected following the establishment of the corrosion risks associated with the improper use of calcium chloride as a setting agent for cement; and what were the results of these inspections.
§ Mr. ArmstrongWithin the past 22 months the Property Services Agency has investigated seven buildings following reports of corrosion of reinforcement. In six of these buildings calcium chloride has been found to be present in the concrete, and is considered to be the principal cause of the corrosion.
§ Mr. Rookerasked the Secretary of State for the Environment what advice his Department has given to local authorities concerning the corrosion risks associated with the excessive or improper use of calcium chloride as a setting agent for cement.
§ Mr. ArmstrongNo advice has yet been issued, but we are considering whether any amendment is needed to the building regulations.