Paddy husk as raw material and fuel for making Portland cement

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Cement and Concrete Research; (United States)

DOI:https://doi.org/10.1016/0008-8846(94)90185-6· OSTI ID:7111164

Barkakati, P; Bordoloi, D; Ch Borthakur, P ^[1]

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1. Regional Research Lab., Assam (India). Inorganic Chemistry Div.

Paddy husk has been finding world wide attention for its utilization in various applications. Most of the research in this area, particularly in the field of cement and building materials has been carried out in the development of lime-rice husk ash cementitious materials. However, the strengths of these cements are low. The present paper deals with the utilization of both calorific value and reactive silica of paddy husk for producing Portland cement type clinkers. The physico-chemical and mineralogical properties of the clinkers and cements produced are presented. The burnability of the raw mixes containing husk as fuel is found to be better than those prepared with other fuels following the same process. This is attributed to the high reactivity of the in situ generated silica in the ash and rapid burning and cooling schedule maintained in the process of clinkerization. Cements of various technological properties comparable to ordinary Portland cement can be produced using paddy husk as fuel at a significantly low LSF and low temperature of around 1,300 C. The clinkers generated are soft and porous and the fuel also being a waste material, the cement produced is expected to be of low cost.

• OSTI ID: 7111164
• Journal Information: Cement and Concrete Research; (United States), Journal Name: Cement and Concrete Research; (United States) Vol. 24:4; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

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09 BIOMASS FUELS
092000* -- Biomass Fuels-- Combustion-- (1990-)
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AGRICULTURAL WASTES
ASHES
BUILDING MATERIALS
CEMENTS
CEREALS
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PRODUCTS
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RICE
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