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what is high performance concrete

 
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Bhaskarboya
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Joined: 05 Nov 2014
Posts: 1

PostPosted: Wed Nov 05, 2014 12:28 pm    Post subject: what is high performance concrete Reply with quote

What is high performance concrete
Why is it said to have performance
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abhy_vivek
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Joined: 26 Jan 2003
Posts: 667
Location: Andheri (E), Mumbai

PostPosted: Mon Nov 24, 2014 12:50 pm    Post subject: Re: what is high performance concrete Reply with quote

Dear Bhaskar,

High Performance Concrete (or Simply called as HPC) is state of the art concrete, developed to cater for all the demands of modern construction projects. HPC has to meet all characteristics like High Strength, High Durability and High Workability. Thus to manufacture HPC apart from regular ingredients of concrete (i.e. Cement, Sand, Aggregates and water) what is needed in pozzolonic materials or strength / performance improving agents like Fly-Ash / GGBS / Micro-Silica. Also to get high workability without increasing water content, 'Super-Plasticisers' are required. HPC also exhibits better tensile and shear strength is properly graded material is chosen and blended with fibers (metal / nylon) etc.

HPC used in PETRONAS tower had M-80 strength and in some parts M-120 (i.e. 120N/mm2) !! In Bandra-Worli sealink project also M-75 was targeted (actual was still higher). Every HPC is designed to meet specific project requirements. Now a days U-HPC i.e. ultra high performance concrete and Hybrid concrete is also being studied and developed in industry. It is also used in a few very rare indudtrial applications. U-HPC is strictly spoken is not a just a concrete or construction material but a 'Chemical' in itself.

The polymers / epoxy and other ingredients used to improve the performance of HPC and U-HPC hikeup the cost of the product. Still due to large industrialisation and technological advancement HPC is now within the reach of normal / mid-size contractors. But U-HPC is still being developed to control the cost.

Hope this preliminary information is more that enough for you to perceive this product.
To know more about HPC, you may read ACI / ACC / ICI / ICJ and other literature.

Regards
Vivek Abhyankar


Bhaskarboya wrote:
What is high performance concrete
Why is it said to have performance
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abhy_vivek
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Joined: 26 Jan 2003
Posts: 667
Location: Andheri (E), Mumbai

PostPosted: Mon Nov 24, 2014 12:54 pm    Post subject: Re: what is high performance concrete Reply with quote

Admin,

Please shift this communication to 'General Discussion' because HPC is no more an Engineering Marvel.

Regards
Vivek Abhyankar


Bhaskarboya wrote:
What is high performance concrete
Why is it said to have performance
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