MicroTech, a new range of ultra-high performance concretes offering rapid strength gain, superb durability, low permeability and high flexural strength has been launched by CEMEX UK.
CEMEX MicroTech concrete is highly resistant to sulphate, chloride and acid attack and is perfect for a range of harsh environment applications including container handling facilities, recycling centres, chemical and petrochemical installations, sea defence work and distribution centres.
The MicroTech range consists of four variations, all containing microsilica, a by-product of steel manufacture, providing clients with a high performance concrete that can be used on site in exactly the same way as other ready mixed concretes. No additional equipment or treatment is required to attain the performance the material offers.
With an early strength gain, reaching 25N/mm sq within 24 hours, the new concrete was used for the first time at a distribution centre near Milton Keynes. The client, Slate Developments required the supply of 42cu m of a concrete that would provide a robust solution for a busy delivery yard while producing enough early strength to allow traffic on it within 24 hours.
The material used at the depot was the polypropylene fibre reinforced MicroTech PF, one of the four different mixes in the range.
The others are MicroTech SF, which incorporates steel fibres to deliver exceptional performance, MicroTech HS designed to give 28 day compressive strengths in excess of 80N/mm sq and the all-purpose MicroTech S, suitable for most applications.
According to CEMEX UK National Technical Director, Steve Crompton, it is the combination of microsilica and specialist high performance admixtures which makes the concrete very robust. “The microsilica is actually a very fine dust, about as fine as tobacco smoke. When mixed with the concrete it helps to optimize the void structure of the concrete making it very dense.
“Because it is so dense the permeability of the concrete is much lower than standard concrete helping to prevent the ingress of harmful chemicals such as sulfates and chlorides,” he comments.
MicroTech is widely available and can be supplied from all of CEMEX UK concrete plants.
NOTES TO EDITORS:
- For further information and photographs contact Elizabeth Young e. Elizabeth.young@cemex .com t. 01932 583214
- CEMEX Readymix produces a full range of mixes designed for specific applications in the commercial, industrial and civil sectors. These include fibre concretes and Evolution, a range of self-compacting concretes with free-flowing and self-levelling characteristics.
- CEMEX is a global building solutions company and leading supplier of cement, ready-mixed concrete and aggregates. In the UK, CEMEX also produces asphalt, and has a significant share of the concrete-block paving, and concrete block sectors. Additionally, the company is the leading supplier of concrete sleepers to the rail industry and a supplier of PFA cement additives. CEMEX has a national supply network in the UK with over 360 locations, to ensure that quality building materials are available to customers locally. For more information, see www.CEMEX.co.uk, www.CEMEX.com