How to repair concrete decks, pavements & hardstandings

Jun 22

Concrete decks, pavements and hardstandings deteriorate over time due to exposure to severe weather conditions and excessive traffic loading on the surface. Concrete pavements form an essential part of the highway infrastructure in the UK and Ireland, some of which have come to the end of their design life and many which are carrying traffic far in excess of their original planned loadings.

If you have an area which needs attention, what considerations need to be made and what are the most efficient ways you can make a safe and long lasting repair?

Common issues and problems

The first step is to prepare a detailed assessment of the condition of the concrete area before any remedial measures are sought.

Cracking

Excessive shrinkage or thermal movement in new concrete pavements can result in the concrete cracking.

Spalled concrete surface and dusty surface

Areas of the concrete surface can spall and break out due to freeze/thaw damage, impact damage and weak surface of the concrete due to over-watered concrete mixes. The concrete unravels as the aggregate is broken out of the area by constant trafficking and these areas grow in size. Over-watered concrete can result in dusty, friable surfaces.

Broken joints

Badly-constructed joints can break up under traffic loads and lead to parallel cracking and/or spalled concrete at the joint. The concrete breaks away, leaving a wide gap in the joint and the potential for further problems.

Solutions

It is recommend that a detailed assessment of the condition of the area must be made first, Weber can assist you to determine the cause of the problem and prepare the correct specification. The assessment should consider the use of the pavement and the traffic loads to be applied.

Surface repairs

webercem pyratop is ideal for the reinstatement of pavement, deck or hardstanding surfaces up to 15m². The rapid setting mortar with high strength gains is trafficable after 6 hours and is perfect for thin bonded overlay repairs from 25mm to 75mm in depth. As it is a rapid setting product, working bay sizes should be limited to 2m x 3m to allow the product to be mixed, applied and finished in a suitable timescale.

webercem pyrapatch is a fast setting repair concrete for patch and full-depth repairs from 25mm to 100mm. It is ideal for permanent patch repairs or full depth reinstatement if bulked out with a suitable aggregate. It is suitable for small patch repairs up to 2m² and is trafficable in just 3 hours.

Crack repair

webertec EP mortar is a high strength epoxy resin repair system, it has negligible shrinkage and offers high adhesion, making it ideal for concrete repairs to spalled and cracked concrete surfaces. The mortar is stronger than concrete in less than 24 hours and provides 2-3 times the strength of normal concrete.

Surface sealing

Apply webertec aquapel créme to harden the surface of weak concrete. The treatment was been designed for porous concrete in exposed locations to protect against absorption of water, pollutants and freeze/thaw cycles.

webertec mulsibond has exceptional penetrating properties and can used for sealing hairline cracks. This multi-purpose crack sealer has good flexibility and bond strength, sealing the crack helping to prevent further ingress of moisture.

How to repair concrete decks, pavements & hardstandings