About us

We can repair all your concrete Issues in fact any concrete repair including RAAC concrete. A bit about...  RAAC or Reinforced Autoclaved Aerated Concrete is not like traditional reinforced concrete in that it isn't made with aggregate. It's less durable and has a shorter lifespan of around 30-years. That's the main reason why some of it is now running the risk of failure, especially where it's not been well maintained. RAAC Concrete can be found in all building types not just schools, within the construction industry between the 1950's & 1990's but usually found in flat-roofs floors and walls. RAAC is lightweight and porous, making it less dense than traditional concrete. It has a distinct, honeycomb-like structure that can be seen when the material is cut or broken. RAAC has a smooth surface that is free from visible aggregate or coarse materials.

  

List of applications & Solutions below!

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CONCRETE REHABILITATION SOLUTIONS: RAAC, Reinforced Autoclaved Aerated Concrete, RFC, Reinforced Concrete. 

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Types of Concrete repairs/rehabilitation Available... 

CFRP Carbon Fibre Reinforced Plastic. Carbon Fibre Plate Bonding or Carbon Fibre Bonding with a Synthetic Resin prescribed depth 3mm-50mm. Carbon Fibre wrapping. Concrete Repair mortars, Concrete protection, Injection, Leak Sealing, Stitching, Drilling and Plugging, Grout, Structural repair, Reinforcement corrosion protection and bonding primer, Cathodic Protection, Cracks, Dry packing, Grouting method of crack Repair, Surface repair.

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We can install traditional strength concrete c30-c40 we can install upwards of 200 cubic m3 of concrete per day with the use of a concrete pump. we can also provide specialist high strength reinforced concrete an example is diamond-crete c70-c100 strength though higher strengths of concrete are available supplied and delivered by Bardon/aggregate Industries.

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We can provide high spec finishes from a Matt finish to a gloss finish these require from two to three wipes for a Matt and from four to five for a high gloss finish or mirror finish with use of a power float size 24, 36, 48 or if its a large area more than 200 sqm a ride-on power-float would be more suitable!

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With over 20 years experience installing and repairing RFC on large and small projects! we can deliver your project on time and within budget. We have implemented various projects throughout the country usually on a labour only basis. though we may consider supply & Installation.

 

 

 

We have £10 million Fully comprehensive public liability Insurance.

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A bit about the nature of Concrete and why raac concrete precast units are failing!

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Concrete and its very nature is an ever developing environment in fact the word matrix is a perfect way of explaining this! The thing about concrete is that when it reaches its compressive strength say 40n which has to be on the 28th day otherwise its failed and whatever project the concrete has been utilised on would be condemned! but usually this isn't the case. as for concrete cube testing these are tested at four timed intervals 7, 14, 21, 28 days!

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The thing is concrete and the nature of concrete is that once it reaches its compressive strength on the 28th day about 95% it just keeps getting stronger and stronger or harder and harder! claiming the last 5% for about 28 years on average.  And as it gets tighter and tighter well then it reaches a point where negatively goes in the opposite direction combined with expansion contraction and water ingress starts breaking down for the next 50- 100 or so years.

 

This is why RAAC units are crumbling much more quickly with the combination of expansion contraction and wet conditions hot and cold and those chemically pressurised air bubbles start breaking against each other creating well bigger pockets and this leads to the structure becoming severely undermined as fissures are created turning into cracks and eventually causing catastrophic structural failure! plus the raac units/structures usually didn't have enough rebar i.e. steel reinforcement sometimes zero but usually just a few bars untied may I add!  To support the concrete structure but even if they were tied their wasn't enough to support the structure but this would only give the raac concrete structure 10 - 15% structural longevity to the concrete unit! but standard concrete is much more dense and when combined with a comprehensive steel structure gives standard RFC structure 75% structural longevity on top of concrete strength.