IS 12894:2002(W5q@iw7) Indian Standard PULVERIZED FUEL ASH-LIME BRICKS — SPECIFICATION (First Revision ) ICS 691.421.2: [ 666,924 +662.613.13] 0 BIS 2002 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 April 2002 Price Group 2 \ Thus pulverized fuel ash-lime brick is a chemically bonded bricks. the finaI value observed or calculated. Pulverized fuel ash reacts with lime in presence of moisture to forma calcium-silicate hydrate which is a binder material. 17.5. Crushed bottom fuel ash or sand is used in the composition as a coarser material to control water absorption in the final product. This national resource has been gainfully utilized for manufacture of Pulverized fuel ash-lime bricks as a supplement to common burnt clay building bricks leading to conservation of natural resources and improvement in environmental quality. lime and an accelerator acting as a catalyst. Various sizes. shall be rounded off in accordance with I IS 2:1960 ‘Rules for rounding off numerical values ( revised)’. The number of significant places retained in the + rounded off value should be the same as that of the specified value in this standard. expressing the result of a test or analysis. crushed bottom fuel ash or sand is also used in the composition of the raw material. This standard was first issued in 1990 covering modular size bricks of only four class designer that is 7. 10.5. j For the purpose of deciding whether a particular requirement of this standard is complied with. . .. Pulverized fuel ash-lime bricks are generally manufactured by intergrinding or blending various raw materials which are then moulded into bricks and subjected to curing cycles at different temperatures and pressures. . + ?:~ The composition of the Committee responsible for formulation of this standard is given in Annex A. Iime bricks so as to achieve uniformity in the manufacture of such bricks. & Further technological advancement in this field advocated inclusion of more class designation like 3. On occasion as and when required. Pulverized fuel ash commonly known as fly ash is a useful by-product from thermal power stations using pulverized coal as fiel and has considerable pozzolonic activity. Production of d.5.5. These bricks are suitable for use in masonary construction just like common burnt clay bricks.. 12. after the draft finalized by the Building Lime and Lime Products Sectional Committee had been approved by the Civil Engineering Division Council. Pulverized fuel ash-lime bricks are obtained from materials consisting of pulverized fuel ash in major quantity.Building Lime and Lime Products Sectional Committee. This standard lays down the essential requirements of pulverized fuel ash- . --4 ..5. 25 and 30 and non modular sizes. 15 and 20. CED 4 FOREWORD This Indian Standard ( First Revision) was adopted by the Bureau of Indian Standards. class designation and tolerances have been taken on the basis of IS 13757 that is for Burnt clay fly ash building bricks. pulverized fuel ash-lime bricks has already started in the country and it is expected that this standard would encourage j its production and use on mass scale. 4 Hand-moulded bricks of 90 mm or 70 mm height 1727:1967 Methods of test for pozzolanic shall be moulded with a frog 10 to 20 mm deep on one materials (jlrst revision) of its flat sides.1.5 The bricks shall have smooth rectangular faces (Part 2): 1992 Determination of water absorption with sharp corners and shall be uniform in shape and ( second revision ) colour. lB ( see 5. through reference in this text.. The shape standards indicated below : and size of the frog shall conform to either Fig. general qua]ity. warpage and organic matters. 1A or Fig. pozzolana and admixture ( first NOTE — Pulverized fuel ash-lime bricks having wet revision ) compressive strength less than 30 N/mm2 approximately 4139:1989 Specification for calcium silicate 300 kgf/cm2 are covered in this standard and for higher bricks ( second revision) strength ( see IS 2180 and IS 1077 ). Is No.dimensions and physical ( second revision ) requirements of pulverized fuel ash-lime bricks used 3812:1981 Specification for fly ash for use as in buildings.2 The bricks shall be solid and with or without tlog possibility of applying the most recent editions of the 10 to 20 mm deep on one of its flat side. Bricks of 40 or 30 mm height as well as those made by extrusion process may not be provided (Part l): 1992 Determination of compressive with frogs. -A IS 12894:2002 Indian Standard PULVERIZED FUEL ASH-LIME BRICKS — SPECIFICATION (First Revision ) 1 SCOPE IS No. 3. constitute 3. frog 712:1984 Specification for building limes dimensions shall be the same as for modular size bricks.1 for L.. lB. compact and provision of this standard. strength ( second revision ) 3. 1A or Fig.1 Visually the bricks shall be sound. 1 SHAPEANDSIZEOFFROGSINBRICKS 1 . ( third revision) .o-4’g0 1A lB All dimensionsin millimetres. Title This standard lays down the requirements for ( Part 3 ): 1992 Determination of efflorescence classification. building bricks: Wand H). All standards are cracks. 5454:1978 Methods for sampling of clay burnt 2 REFERENCES building bricks (jirst revision) ~’ The following Indian Standards contain provisions 3 GENERAL REQUIREMENTS i which. subject to revision and parties to agreements based on this standard are encouraged to investigate the 3. uniform in shape. FIG. At the time of publication.3 In case of non-modular size of bricks.. Title 3. The bricks shall be free from visible the editions indicated were valid.. 3495 Methods of tests of burnt clay conform to either Fig. 10 T020 R20T -1 40 ~loo * b 41 Lf. the shape and size of the frog shall . 0 ( 300) 25 25.0 ( 250) b) For Non-moduIar Size 20 20.1 shall be within the following limits per 20 given in Table 1. the sample may be divided into rows of 10 bricks each which shall 5. for any reason it is found 190 90 40 impracticable to measure bricks in one row.5 3.IS 12894:2002 4 CLASSIFICATION 5. The tolerance 230 110 70 requirements of length.5 12.2.2. with the non- Ash ) modular sizes.1 Dimensions of cIay and small projections shall be removed. 230 110 30 6 MATERIALS 5. They 5.0 ( 100) ( For 70 mm high bricks ) 7.l A and Fig. 2 .2 Tolerances 4.0 ( 150) Height 1360mmto 1440( 1400* 40mm) 12. the following sizes of the bricks may also be used: Pulverized fuel ash commonly known as fly ash shall conform to Grade 1 or Grade2ofIS3812.1.5 17. loose particles 5.0 ( 200) Length 4520t04680mm(4600 *80mm) 17.5 ( 175 ) Width 2160mmto2240 (2200 *40mtn) 15 15. lB ): these dimensions shall be added together.2 Bottom Ash mm mm mm Bottom ash used as replacement of sand shall not have 70 110 70 l/J length brick more than 12 percent loss on ignition when tested 230 50 70 !4 width brick according to IS 1727.1 Pulverized Fuel Ash (Commonly Known as Fly modular dimensions for the brickwork.1. All blisters.5 (35) 5. Length (L) Width (W) Height (H) NOTE — By the agreement between the purchaser and the manufacturer pulverized fuel ash-lime bricks may mm mm mm be manufactured in other sizes also.5 7. The overall length of the assembled bricks shall be measured with a steel tape Length (L) Width (W) Height (H) or other suitable inextensible measure sufficiently long mm mm mm to measure the whole row at one stretch.1 Pulveriz~d fuel ash-lime bricks shall be classified The dimensions of bricks when tested in accordance on the basis of average wet compressive strength as with 5. If.1 For obtaining proper bond arrangement and 6. 2B and 2C in contact with each lB): other and in a straight line. Measurement by repeated application of short rule or measure shall not be permitted.1.1 The standard modular sizes of pulverized fuel shall then be arranged upon a level surface successively ash-lime bricks shall be as follows ( see Fig. width and height shall remain the same as given above. 2A. bricks: Table 1 Classes of Pulverized Fuel Ash-Lime a) For Modular Size Bricks Length 3720t03880mm( 3800+ 80mm) Width 1760 to 1840 mm ( 1 800*40 mm ) Class Average Wet Compressive Strength Designation not Less Than Height 1760 to 1840 mm ( 1 800*40 mm ) N/mm2 kg f/cm2 ( For 90 mm high bricks ) ( Approx ) 760t0840mm( 800*40 mm) (1) (2) (3) ( For 40 mm high bricks ) 30 30. 1A and as indicated in Fig.1 Twenty ( or more according to the size of 5 DIMENSIONS AND TOLERANCES stack ) whole bricks shall be selected at random from the sample selected under 8.2. Length (L) Width (W) Height (H) 6.0 (50) ( For 30 mm high bricks ) 3.5 (75) 560t0640mm(600* 40mm) 5 5.2 The following non-modular sizes of the bricks be measured separately to the nearest millimetre.5 ( 125 ) 10 10. All may also be used ( see Fig. 5 and 15 percent by mass for higher classes.1 The use of the Standard Mark is governed by shall be limited to the upper limit of the class for the the provisions of the Bureau of Indian Standards Act.5 Additives The bricks. Deleterious materials. after immersion the durability of the bricks such as gypsum.1 Each brick shall be marked in a suitable manner the minimum average wet compressive strength with the manufacturer’s identification mark or initials.3 Sand of three units. 1986 and the Rules and Regulations made thereunder.1 Sampling and criteria for conformity of the bricks pulverized fuel ash-lime bricks shall not be less than shall be as given in IS 5454. The bricks may also be marked with the Standard Mark.2 BIS Certification Marking than 20 percent. the same 9.1 Compressive Strength CONFORMITY The minimum average wet compressive strength of 8. --’- 7. may be used. absorption not more than 20 percent by mass up to class 12. The bricks when tested in accordance with the 6. being the average Bureau of Indian Standards. 1S712. in cold water for 24 h. .. cement. 7 PHYSICAL CHARACTERISTICS 8 SAMPLING AND CRITERIA FOR 7.2 MEASUREMENT OFTOLERANCES OFCOMMONBUILDING BRICKS 6. . -. 7. purpose of averaging.3 Efflorescence Test shall preferably be less than 5 percent.1 FIG. the one specified for each class in 4.2 Drying Shrinkage the use of the Standard Mark may be granted to The average drying shrinkage of the bricks when tested manufacturers or producers maybe obtained from the by the method describedinIS4139.4 Lime procedure laid down in IS 3495 (Part 3 ). shall have average water etc. shall not exceed 0.2.15 percent. The details of conditions under which the licence for 7. such as clay and silt in sand.1 when tested 9 MARKING as described in IS 3495 ( Part 1 ). shall have the rating of efflorescence not more than ‘moderate’ Lime shall conform to Class C hydrated lime of up to Class 12..5 and ‘slight’ for higher classes.4 Water Absorption 6. & IS 12894:2002 2A Measurement of Length 2B Measurement of Width 2C Measurement of Height . NOTE — In case any of the test results of wet compressive strength exceed the upper limit for the class. The wet compressive strength of any individual brick shall not fall below 9. specified for the corresponding class of bricks by more 9.. when tested in accordance with the * Any suitable additive considered not detrimental to procedure laid down in IS 3495 (Part 2 ). GUPTA ( Alternate ) SHRIS. SETHI( Alternate ) Central Building Research Institute. SHRIS. Lucknow( U. New Delhi SHRISATENDER KUMAR Central Soil and Materials Research Station. A. M. Vadodara ( Gujarat ) CHIEFENGINEER RF. Jaipur ( Rajasthan ) SHRIS. SHRIVIMALKUMAR New Delhi SHRIMUKESH ( Alternate ) MATHUR Gujamt Engineering Research Institute. SENGUPTA New Delhi . MACEDO Fly Ash Mission. New Delhi ( Alternate ) SHRIK. VYAS( Ahernafe ) Dyerslime and Chemicals Pvt Ltd. DR K. K. Delhi SHRI A. New Delhi Stint S. GANGADHARAN Research. SHARMA Regions] Engineering College. ) SHRID. Roorkee DRC. P. TANEJA SHRID. KAPODR( Alternate ) Office of the Development Commissioner (SS1). L. K. R. JOHAR ( Alternate SHRI S. New Delhi SHRIKARANKUMARMAHAJAN ( Alternate ) SHRIAsHo~ DALWANI Building Material and Technology Promotion Council. MALHOTRA Central Public Works Department. KANUNGO SHRI R. M. GUPTA Joint Director ( Civ Engg ). SURI ( Akernate ) SHRIMURARIRATNAM Department of Mines and Geology. Designs and Standards Organization (Ministry of DEPUTYDIRECTOR STANDARDS ( B&F) Railways ). L. Roorkee ( UP) SHRIR.IS 12894:2002 ANNEX A ( Foreword) COMMITTEE COMPOSITION Building Limes and Lime Products Sectional Committee. DR R. HAGUE( Alternate ) National Council for Cement and Building Materials. Ministry SHRIA. Kolkata/Ghaziabttd ( U. G. Debra Dun SHRIHARISHMARWAH ( Uttaranchal ) Ministry of Environment and Forests. JAICHANDRAN Rajasthan Housing Board. Government of Rajasthan. SHRIJ. SHARMA Ballabhgarh ( Harymm ) DR M. C. KHAN New Delhi DR M. Warangal. P. L. Andhra Pradesh PROFD. VERMA( Chairman ) Ansisl Properties and Industries Ltd. K. Government of India. K. SINGH( Alternate ) Khadi and Village Industries Commission. P. ALI( Alternate ) National Test House. New DeIhi SHRIS. BIS 4 . Departmrmt of Science and Technology.Director and Head ( Civ Engg ) [Representing Director General (Ek-o&cioMember)1 Member-Secretary SHRIR.%mt V. K. GUJRAL ) Lime Manufacturer Association of Doon Valley. K. BOHRA Udaipur SHRIG. CED 4 Organization Representative(s) Central Building Research Institute. Mumbai DEPUTYCHIEFEXECUTIVE OFFICER DIRECTDR( LIMES) ( Ahernare ) Lime Manufacturers Association of India.SEARCH OFFtCER ( MATSRIAL TESTtNGDIVISION ) ( Alternate) Housing and Urban Development Corporation.ENGINEER ( S&S ) EXECUTIVE ENGINEER ( S&S ) ( Alternate ) Central Road Research Institute. ) ASSISTANT DESIGN ( B&F) (Alternate) ENGINEER BIS Directorate General SHRIS. Delhi SHRIN. S. New Delhi SUPTDG. K. P. JAIN. S. SOOD of Industry. 3239402 ( Common to all offices) Regional Offices: Telephone Central: Manak Bhavan. BHUBANESHWAR. No part of these publications maybe reproduced in any form without the prior permission in writing of BIS. Campus.2541442 { 2542519. Road. Andheri (East) 8329295. Date of Issue Text Affected BUREAU OF INDIAN STANDARDS Headquarters: Manak Bhavan. BANGALORE. 1. This does not preclude the free use. a standard along with amendments is reaffirmed when such review indicates that no changes are needed.P. Khurja. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of ‘BIS Catalogue’ and ‘Standards : Monthly Additions’.3378561 KOLKATA 700054 { 3378626. of necessary details. NAGPUR. E9 MIDC. CHANDIGARH 160022 603843 { 602025 Southern: C. CHENNAI 600113 2541216. V. Sector 34-A. KANPUR. Mare!. BIS. GHAZIABAD. THIRWANANTHAPURAM. type or grade designations. Printed at New India Printing Press. HYDERABAD. GUWAHATI. IV Cross Road. CED 4 ( 6005 ). 1986 to promote harmonious development of the activities of standardization. marking and quality certification of goods and attending to connected matters in the country.Bureau of Indian Standards BIS is a statutory institution established under the Bureau oflndian Standards Act.8327892 Branches : AHMADABAD. RAJKOT.T. This Indian Standard has been developed from Doc : No. it is taken up for revision. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. 9 Bahadur Shah Zafar Marg 3237617 NEW DELH1 110002 { 3233841 Eastern: 1/14 C. Copyright BIS has the copyright of all its publications. Enquiries relating to copyright be addressed to the Director (Publications). FARIDABAD.3379120 Northern: SCO 335-336. LUCKNOW. Scheme VII M. COIMBATORE. New Delhi 110002 Telegrams: Manaksanstha Telephones: 3230131. 1. PUNE. BHOPAL.2541315 Western : Manakalaya. Amendments Issued Since Publication Amend No. NALAGARH.PATNA. if the review indicates that changes are needed. such as symbols and sizes. JAIPUR. I. 9 Bahadur Shah Zafar Marg. T. India . Standards are also reviewed periodically. Kankurgachi 3378499. in the course of implementing the standard.8327858 MUMBAI 400093 { 8327891.3233375.