Paving Blocks from Fly Ash , Blast Furnace Slag,Steel Slag, etc.

1.

Title of Product/Design/Equipment

Paving Blocks from Fly Ash , Blast Furnace Slag,Steel Slag, etc.

2.

IPR Status

Patent /Abroad IPR Details

Patent Application No: 1509/KOL/2011

3.

Application/Uses

Manufacturing of Paving Blocks

4.

Salient Technical Features including Competing Features

These Paving blocks are produced from the geopolymerisation of industrial waste such as fly ash, granulated blast furnace slag, steel slag, and red mud in different combinations.

Meets IS 15658:2006 specification

Can be produced in different shapes and sizes with properties equivalent to Ml 5 - M35 grade concrete.

Uses ambient temperature synthesis and generates 30% less C02,35% low embodied energy than conventional equivalent product.

5.

Level/Scale of Development

10 tons/day

6.

Environmental Considerations

The product meets USEPA 1311 specification for toxicity. Also due to 35% low C02 emission and 35% less embodied energy, it falls in the category of green. Due to use of waste and byproduct, it qualifies for 1 point in LEED certification for green building.

7.

Status of Commercialization

Technology transferred and commercialized.

8.

Major Raw Materials to be Utilized

Fly ash conforming to IS 3812, and/or

Ground granulated blast furnace slag conforming to IS

12089:1987, and/or Steel slag with low free lime and metallic iron

Chemical admixture as per IS 9103

Commercial grade Alkali hydroxide/ silicate.

9.

Major Plant Equipment and Machinery Required

Hopper, Batch weighing system, Pan mixer, Vibro-hydraulic press. Curing tanks, Conveyor belt, Dust collection systems, etc.

10.

Techno-Economics

Minimum viable plant size: 50 tons/day Capital cost: Rs. 40 Lakhs (Excluding land and building) Cost of product: Rs. 320-400/ square meter.

11.

Technology Package

(a) Process-Know-how, (b) Details of equipment, (c) Plant Layout, & (d) Quality Assurance Methods. Assistance in setting up the plant on separate terms.