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IS 13757 (1993): Burnt clay fly ash building bricks ...
www.iitk.ac.inNOTE - Burnt clay ftyash bricks having compres sive strength less than 30 N/mm' approximately 300 kgf/em- are covered in this standard and for higher strength, see IS 2180 : 1988 and IS 1077 : 1992. 2 REFERENCES 2.1 The Indian Standards listed in Annex A arc necessary adjuncts to this standard. 3 TERMINOLOGY 3.1 For the purpose of this ...