Slag Cement
IS 455: 1888
Indian Standard
( Reaffiid
1995 1
PORTLAND
SLAG CEMENT-SPECIFICATION
( Fourth Revision )
Second Reprint SEPTEMBER 1998 UDC 666’943
@ BIS 1990
BUREAU
MANAK
OF
BHAVAN, 9
INDIAN
BAHADUR NEW DELHI
STANDARDS
SHAH 110002 e-4 ZAFAR MARG
May 1990
Cenmnt and Concrete Sectional Committee, CED 2
FOREWORD This Indian Standard ( Fourth Revision ) was adopted by the Bureau of Indian Standards on 30 October 1989, after the draft finalized by the Cement .and Concrete Sectional Committee had been approved by the Civil Engineering Division Council. Portland slag cement is obtained by mixing, Portland cement clinker, gypsum and granulated slag in suitable proportions and grinding the mixture to get a thorough and intimate mix between the constituents. It may also be manufactured by separately grinding Portland cement clinker, gypsum and granulated slag and then mixing them intimately.. The resultant product is a cement which has physical properties similar to those of ordinary Portland cement. In addition, it has low heat of hydration and is relatively better resistant to soils and water containing excessive amounts of sulphater of alkali metals. alumina and iron, as well- as to acidic waters, and can, therefore, be ‘used for marine works with advantage. The manufacture of Portland slag cement has been developed primarily to utilize blastfumace slag, a waste product from blastfurnaces. The development of manufacture of this type of cement will considerably increase the total output of cement production in the country and will, in addition, provide a profitable use for an otherwise waste product. The slags obtained from other types of furnaces, but having identical properties as those of granulated blastfumace slag conforming to this standard, may also be used for manufacture of Portland slag cement. This standard was first published in lb53 and subsequently revised in 1962,1967 and 1976. This fourth revision incorporates
Indian Standard
( Reaffiid
1995 1
PORTLAND
SLAG CEMENT-SPECIFICATION
( Fourth Revision )
Second Reprint SEPTEMBER 1998 UDC 666’943
@ BIS 1990
BUREAU
MANAK
OF
BHAVAN, 9
INDIAN
BAHADUR NEW DELHI
STANDARDS
SHAH 110002 e-4 ZAFAR MARG
May 1990
Cenmnt and Concrete Sectional Committee, CED 2
FOREWORD This Indian Standard ( Fourth Revision ) was adopted by the Bureau of Indian Standards on 30 October 1989, after the draft finalized by the Cement .and Concrete Sectional Committee had been approved by the Civil Engineering Division Council. Portland slag cement is obtained by mixing, Portland cement clinker, gypsum and granulated slag in suitable proportions and grinding the mixture to get a thorough and intimate mix between the constituents. It may also be manufactured by separately grinding Portland cement clinker, gypsum and granulated slag and then mixing them intimately.. The resultant product is a cement which has physical properties similar to those of ordinary Portland cement. In addition, it has low heat of hydration and is relatively better resistant to soils and water containing excessive amounts of sulphater of alkali metals. alumina and iron, as well- as to acidic waters, and can, therefore, be ‘used for marine works with advantage. The manufacture of Portland slag cement has been developed primarily to utilize blastfumace slag, a waste product from blastfurnaces. The development of manufacture of this type of cement will considerably increase the total output of cement production in the country and will, in addition, provide a profitable use for an otherwise waste product. The slags obtained from other types of furnaces, but having identical properties as those of granulated blastfumace slag conforming to this standard, may also be used for manufacture of Portland slag cement. This standard was first published in lb53 and subsequently revised in 1962,1967 and 1976. This fourth revision incorporates