Sika MonoTop 630 Rapid

Sika MonoTop 630 Rapid is a one component fast setting cementitious repair mortar, meeting the requirements of Class R4 of BS EN 1504-3.

Best Uses

Sika MonoTop 630 Rapid is ideal for repairing all types of concrete structures such as horizontal and vertical repairs, hand applied repairs and repairs of floor slabs and car park decks. Sika MonoTop 630 Rapid is suitable for exterior and interior use in place of R1, R2 & R3 mortars.

• Pre-bagged for quality
• Just add water
• High early strength
• Rapid setting
• Contains no chloride admixtures
• Non corrosive to steel
• Can be overcoated

Application

Prepare Concrete and Steel as per datasheet guidance.

Reinforcement Corrosion Protection Coating
Where a reinforcement coating is required the application of a repair mortar shall be applied wet on dry onto the reinforcement corrosion protection. Refer to the System Information above for compatible Sika products and refer to the relevant Product Data Sheet for more detailed information about the reinforcement corrosion product.

Bonding Primer
On a well prepared and roughened substrate a bonding primer is generally not required for this product. When a bonding primer is required, refer to the System Information above for compatible Sika products and refer to the relevant Product Data Sheet for instructions. A small amount of Sika MonoTop®-630 Rapid can also be mixed slightly wetter than normal and used as a scratch coat to fill any deep cavities or pits in the base of the substrate. Any bonding primer shall be applied on a pre-wet substrate and subsequent application of the scratch coat /repair mortar shall be applied wet on wet onto the bonding primer.

Repair Mortar Application
Sika MonoTop®-630 Rapid can be applied manually using traditional techniques. Thoroughly pre-wet the prepared substrate a recommended 2 hours before application. Keep the surface wet and do not allow to dry. Before application remove excess water e.g. with a clean sponge. The surface shall appear a dark matt appearance without glistening and surface pores and pits shall not contain water. When applying first make a scratch coat by firmly scraping the repair mortar over the base of the substrate surface to form a thin layer and fill any deep cavities. Ensure the whole surface to be repaired is covered by the scratch coat. For vertical applications, build up layers from bottom to top by pressing mortar well into the repair area. The surface can be finished according to the surface texture requirements using a float. Do not over-trowel as this may lead to surface cracking.