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Pozzolana cement

 
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sidhudaljeet
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Joined: 26 Jan 2003
Posts: 110

PostPosted: Sat Oct 16, 2004 7:19 pm    Post subject: Pozzolana cement Reply with quote

Hello every body

It is pozzolana cement that is confusing me from last several years, can any one tell what is the reality, is it merely big margin for cement companies or it is really better than OPC

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Jayant Lakhlani
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Joined: 26 Jan 2003
Posts: 191
Location: Rajkot, Gujarat, India

PostPosted: Mon Oct 18, 2004 6:54 am    Post subject: Pozzolana cement Reply with quote

Dear All,

In context of the Portland Pozzolana cement, I would like to share my experience on using high volume of fly ash in the concrete.

At present, we are providing our consultancy services for a road project in which high volume fly ash concrete is being used. In the mix design, the cementitious material comprises of 225 kg of OPC and 225 kg of fly ash per cu. m. of the concrete.

Till date, approximately 1200 cu. m. of the concrete work has been completed and the test results show 28 day compressive strength as 35 Mpa and above. Similarly flexural stregth results are 6.5 Mpa and above.

With 4.5 bags of cement per cu. m. of concrete, the results should be of very much interest to every body associated with the concrete.

I am not having much test data on durability but knowing the chemical action of the fly ash in the concrete, I strongly believe that it must be better than the concrte made with OPC.

Regards.

-Jayant Lakhlani



          
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