Optimix RM740 Repair Mortar (HKHA Class 40)

Product description

A polymer-modified, shrinkage-compensated high-strength lightweight cementitious repair mortar complying with the Hong Kong Housing Authority Class 40 specification and accredited under the HKCI PCCS-RM scheme.

Key features

• Class 40 high-strength repair mortar
• Lightweight, high-build formulation for vertical and overhead work
• Low shrinkage with good adhesion to the substrate
• Resistance to chloride ingress and carbonation with consistent prebatched quality

Applications

• Spalled-concrete repairs requiring Class 40 performance
• Patching of voids, honeycombing and general concrete defects
• Slabs, beam soffits, columns and other vertical or overhead areas
• Reinstatement of defective concrete cover around embedded reinforcement

Selection guidance

RM740 is for Class 40 high-strength repair requirements; RM725 may suit Class 25 work where specified. Follow the latest TDS for repair depth, layer build-up, bonding treatment and curing.

Browse the Optimix product range or other concrete repair mortars. Refer to the latest official TDS attached to this page for technical values, application method and limitations.