Parex LA Repair Concrete

Conforms to the requirements of BS EN 1504-3 R4 classification

DTp BD27/86 Clause 4 and "specification for highways works" Clause 1704.6.

Portland cement, selected aggregates and additives.

6 Months

Store properly in original unopened, sealed and undamaged packaging in dry and cool conditions.

Dmax: 4.0 mm

<0.003%

~11 (kohm.cm)

3.25 litres (13% by mass) per 25kg bag

20mm min. / 500mm max.

Flowing concrete

+5°C min. / +30°C max.

+5°C min. / +30°C max.

This depends on the substrate roughness and thickness of layer applied. As a guide, 1 25kg bag yields approximately 12.5 litres of mortar.

Place the required quantity of water into a suitable forced action mixer such as a creteangle. Slowly add the powder to the water whilst continuously mixing. After all the powder is added mix for a further minute to ensure a smooth lump free consistency is achieved.

Ensure sufficient Parex LA Repair Concrete has been mixed and available so the placing operation can be carried out in one continuous pour. Place from one side of the form until the area is full. When placing through a flexible tube to the bottom of the section, pour slowly and continuously to displace air upwards within the work piece.

For cold weather working consider using warm water to assist with achieving strength gain & other physical properties.

At temperatures between 5°C and 35°C, formwork should be left in place until the compressive strength of the LA Repair Concrete has reached at least 10N/mm2. Once the formwork has been struck any exposed concrete should be cured immediately to ensure full cement hydration and minimise cracking. Use polythene sheeting taped down at edges or other approved method. In cold ambient conditions protect recently placed concrete from freezing.

Clean all tools and application equipment with water immediately after use. Hardened/cured material can only be mechanically removed.