By: tfiid

tfiid — Wed, 26 Oct 2011 21:18:41 +0000

Experimental results on biomass silica blended cement bricks were encouraging. We consistently achieved compressive strenth of more than 10 MPa. Dato’ Chu decided to go ahead with a pilot plant to produce blended cement brick in his new factory in Seremban 2.I worked closely with Ken (Siow Kean Shyan), the General Manager of Blacktop to come up with a transportable silo for ash handling and transportation. Four silos were fabricated. Two will be placed on the source of ash where a screw conveyor was designed and installed to facilitate ash collection. Once filled, it will be loaded onto lorry to be transported to the pilot plant. The silo will be tilt up to discharge the content to a hopper connected to a screw conveyor. The blended cement production system has to be reprogrammed to accomodate the biomass silica replacing up to 30% of cement.Although 20% ash gave higher stregnth, durability research for more than 2 years indicated the optimum content is 10% for strength and durability. The findings were repeated in Johor in Teo’s plant. The findings were confirmed.The TIA concrete mix design nomograph was then published. For high strength grade 80 concrete spun pile, we achieved compressive strength greater than 100 MPa for autoclaved concrete. In fact ERL is supported by spun pile containing blended cement.High stregnth concrete is suitable for precast concrete elements where high early strength is desirable. The reduction of size means economy and reduced dead weight.

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By: tfiid