Fly Ash Bricks
An Indian organization is offering an economical way for manufacturing fly ash bricks. The process stipulates mixing of fly ash, sand, lime and a small quantity of chemical accelerator in a desired proportion. Suitable quantity of water is added to prepare a homogenized mix of raw materials. Fly ash being a non plastic material the raw mix is subjected to a pressure of approximately 250 kx/ in a suitable hydraulic press. Formed bricks are then exposed to natural drying, the period of which varies from 48 hours to 72 hours depending upon the weather conditions. Semi dried bricks are cured under steam at a desired pressure and temperature. Steam cured finished bricks are stacked in open during which time they gain further strength. ECONOMIC DATA: Project cost - US$ 2.6 million; Know-how fee - US$ 65,000 for capacity upto 30,000 million/day; Machinery/equipment(FOB) - US$ 1.7 million; Training fee - negotiable. CONTACT DETAILS: Mr. N.K. Sharma - Managing Director, National Research Development Corporation. 20 Zamroodpur Community Centre, Kailash Colony Extension, New Delhi 110 048, India. Tel: (91-11) 648 0767; Fax:(91-11) 646 0506; 647 8010; E-mail: [email protected]; Web:
Sector: Construction
Country: India
Area of Application: construction, bricks manufacturing
Keywords: fly, ash, bricks, construction
Advantages: Fly ash bricks being machine finished and uniform in size will require comparatively less quantity of cement mortar. Outside wall plastering could be avoided as these bricks are smooth and of cement color. These bricks are resistant to salinity and water seepage. Adoption of these bricks will facilitate our country in a significant manner in the conversion of agricultural soil and soil erosion problems faced by our country.
Environmental aspects: Not Applicable
Development Status: Fully Commercialized
Legal Protection: No Legal
Technical specifications: n/a
Transfer Terms: Consultancy , Equipment Supply , Others
Target Countries: Cameroon, Cape Verde, Central African Republic, Chad, China, Congo, Djibouti, Brunei Darussalam, Burundi, Cambodia
Estimated cost (US$):  
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Contact Person: APCTT (UNESCAP)
Address: Asian and Pacific Centre for Transfer of Technology (APCTT) C-2, Qutab Institutional Area
City: New Delhi
Country: India
Zip/Pin Code: 110016

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