( Reaffirmed 2001 ) IS:4832(Part I)-1969 Indian Standard SPECIFICATION FOR CHEMICAL RESISTANT MORTARS PART I Flooring Choirman SILICATE Sectional TYPE Committee, Representing and Plastering BDC 5 SHBI M.S.BHATIA Central Publio Works Department Ltd. Caloutta Members Natiouel Rubber Manufacturers Da D. BAXBSJEB DE M. L. BEA~XI= ( Alternate ) Arcop Industries, Ahmedsbed SEBI DINI~EE A. Oaors~~ SHBI RAI~IXLAL A. CxorsaI ( Alternate ) DEPUTY CHIBF MBO~ANIOAL ENGINEEB, INTLOBAL COAOE hfinitstryofBailwsYs FAOTOBY, PERIMBUE DEPUTY DIBIC~~OB ( ABOH ) of India, Bombay Engineer-in-Chief's Branch, Army Headquartera SHBI B. P. hfnxmmrEl (Alternote) Oxy-ohloride Flooring Products Ltd, Bombay SHBI R. BAEILAL DB PBANLAL PATEL ( Alternate ) C!ent~~r;~~lding Research Institute ( CSIR ), DB JO~BPH GBOWE SHBI K. P. ~HOSH DB MORAN RAI ( Alternote ) Modern Tiles & Marble, New Delhi Sasr S. C. KAPOOB SEBI A. C. KAPOOB ( Alternate ) Burmab.Shell Oil Storage & Distributing Co of SHRI M. R. MALYA Tndia Ltd. Bombay DB B. S. BA~SI ( AIternate ) Central Builders' Association, New Delhi SH~I HAZABI LAL YABWAH The Institution of Engineers ( India ). Caloutta SRRI T. R. MEHANDBV Coromendel Prodoritb Pvt Ltd, Madras SHBI M. V. MUBV~APPAN SHBI R. SBINXVASAN ( Alternate ) India Linoleums Ltd. 24 Perganes ( West Bengal : SEBI H. M. NANDKBOLYAB Mabereshtre Engineering Reseeroh Institute, SHBI M. G1.PADAYB Nesik SHBI N. M. Joo ( Alternate ) The Bhor Industries Ltd. Bombay Snar RAYAN M. PATBL SEBI J. M. SHBOPI ( Ahemote ) RIOEABCH. D~EIGNS AND OBOANIZASTANDABD~ TION,LUOKNOW (Alternate 1 The Conorete Aesooiation SHBIP.K. DOOTOB i Continued on pcrlc 2 i BUREAU MANAK OF BHAVAN, INDIAN STANDARDS ZAFAR MARC3 9 BAHADUR SHAH NEW DELHI 110002 IS:4832(Part Members I)-1969 1) ( Continued from page Representing Buildings Organization, New Nation& SHBI RABINDEB SINOH SEIU 0. P. RATBA ( Alternate ) Delhi Nations1 Test Houee, Calcutta SHBI E. K. RAYAOHANDBAN SHBI K. L. BANEBJEB ( Alternate ) Directorate General of Supplier & Dbpode SHB~ G. 8. SAVKAB Bureau of Publio Enterpriaee (Ministry of SHE1 L. cf. SELVAI Finance ) SHBI T. ?d. VARTJ~EBS~ ( Alternut- \ Indian Institute of Arohiteotr, Bombay 8~x1 Q. C. SHABYA E~~wBE~ SUPEBINTENDINQ Public Works Department, Qovemment of Terni1 Nadu (PLANNING & D~srone C~xo~a) DEPXITY Cmer ENOINESUB ( BWILDINQ ) ( Altcrnoie ) SUPXCBINTPNDINQSIJBV~YOB or Central Publio Worka Department WOBEa I SnsvniYoB 01 woxxs I `To SSW I ( Alternate ) &XI R. NAOABAJAN, Director General, BIS ( Ex-o&lo Member 1 3irector ( Civ Eugg ) Secretary SHBI L. RAMAOHAXDBA RAO Deputy Director ( Civ Eugg ), BlS Acid Qsisting Flooring and Cementing Subcommittee, BDC 5 : 6 Bureau of Phblio Materials Convener SHxI L. a. SxLVAY Enterprisee (Minbtry of Finance ) Members The Aeaooisted Cement Compsniea Ltd. Bombay Sass H. N. BANIWJEA Indian Drugs It Phsrmeceutioale Ltd. New Delhi DE L. K_ BEFJL SHBI H. V. BHAEXA~ RAO Refractory Seotionel Committee, SMDC I8 of ISC SHBI DINEBFI A. C~onrsr Arooy Induztrier, Ahmedabed DE K. (f. SHAH (Alternate) Engineer-in-chief's Branch, Army Hssdquartere S~lax K. P. CtIiOSH SHBI B. P. MUXHPIIJII~ ( A/&mute ) Fertilizer Cprqoretlon of India Lta, New Delhi SHBI A. D. &PTA DB R. B. HAJELA Cent;o~r~~ldmg Research Institute ( CSIR ), DE H. A. MONTHIBO SEBIhf.V.bJUBUoAPPAN SEEI SHBI R, SBINI~ASAN ( Alternate ) D. V. RAJADHYAKSHA Flintrook Produotr Pvt Ltd. Bombay Netsoon Yenufseturiug CO, Bombay Sxa~ A&L N. SHAH Cibe of Indis Ltd, Bombay Coromandel Pmdorite Pvt Ltd, Me&se 2 IS:4832(Part I)-1%9 Indian Standard SPECIFICATION FOR CHEMICAL RESISTANT MORTARS PART I SILICATE TYPE 0, FOREWORD 0.1 This Indian Standard was adopted by the Indian Standards Institu.tion on 25 November 1969, after the draft finalized -by the Flooring and Plastering Sectional Committee had been approved by the Civil Engineering Division Council. 0.2 The chemically setting silicate type mortars are resistant to most acids except hydro-fluoric and concentrated ortho-phosphoric acids. They are not resistant to alkalies of any concentration, or to boiling water and steam and are likely to be deteriorated by continued exposure with water or frequent washing with water. The silicate type of mortar is found to be satisfactory to resist nitric, chromic, sulphuric and hydrocblo&c acids and are used for jointing acid-proof bricks or tiles in construction of towers, stacks, t&k-lining, sumps, drains, chemical resistant floors, etc. The potassium silicate type mortar is recommended where resistance to sulphuric acid or mixtures of sulphuric and other For actual method of use of silicate type mortars, acids is required. IS : 4441-1967F shall be referred. 0.3 In the formulation of this standard due weightage has been given to international co-ordination am-&g the standards and practices prevailing in different countries in addition to relating it to the practices in the field in this country. This has been met by deriving assistance from C4661962T ` Tentative specifications for chemically setting silicate and silica types of chemical resistant mortars ' issued by the American Society for Testing and Materials. 0.4 Investigations carried out by the Central Building Research Institute, Roorkee, has also been of assistance. 0.5 This standard contains clause 5.1 which calls for agreement between the purchaser and the.supplier with regard to the limits of chemical resistance. *Code of practice for use of silicate type chemical resistant. mortera. 3 IS:4832(Part 0.6 This standard resistant mortars. I)-1969 is one of a series of Indian Other standards published of practice Standards on chemical so far in the series are: type type ty+ chemical chemical chemical resistant resistant resistant IS : 4441-1967 Code resistant mortars for use of silicate for use of sulphur for use of resin IS : 4442-1967 Code of practice resistant mortars IS : 4443-1967 Code resistant mortars of practice IS : 4456 ( Part I )-I967 Methods of test for mortars: Part I Silicate type and resin type IS : 4456 ( Part II )-I967 Methods of test for mortars: Part II Sulphur type IS : 4832 ( Part III )-I968 Specification for mortars: Part III Sulphur type chemical chemical chemical 0.7 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be roundedoff in accordance with,IS .: 2-1960+. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. 1. SCOPE 1.1 This standard covers the requirements for chemically setting silicate mortars. for bonding chemical-resistant type of chemical resistant masonry units. 2. TERMINOLOGY 2.0 For the purpose of this standard, the following definition shall apply. 2.1 Chemically Setting Silicate Type Chemical-Resistant Mortar - An intimate mixture of a chemically inert solid filler, a setting agent usually contained in the filler and a liquid silicate binder. When the filler and the binder are mixed at ordinary temperatures, a trowelable mortar is formed which subsequently hardens by the chemical reaction between` the eating agent and the liquid silicate binder. 3. MATERIALS 3.1 Binders -The with soda-silica liquid binder wy be a solution molecular ratio of 2'5 to 3.5 and/or of sodium potassium silicate silicate *Rules for rounding off numerioal values ( revfred ). 4 IS:4832(Put I)-1969 with potassium oxide-silica molecular ratio of 1.8 to 2.3. The solution shall have a specific gravity of about 1.3 and shall be capable of forming chemical resistant mortar when mixed with a suitable setting agent and filler material. 3.2 Fillers - The fillers may be silica, quartz, ganister, andesiteor material insoluble in common mineral acids, except hydro-fiuoric other acid;. 3.3 Setting Agent -The setting agentgenerally used is a iiuoride or acid compound which shall react with the silicate binder to form an insoluble silica gel. 4. PHYSICAL REQUIREMENTS 4.1 Chemically setting silicate type chemical resistant mortars satisfy the requirements given in Table 1 when tested in accordance IS : 4456 ( Part I )-1967*. TABLE 1 PHYSICAL REQUIREMENTS OF SILICATE TYPE CHEMICAL RESISTANT MORTARS ( Clauses 4.1, A-3.1 and A-3.3 ) shall with & (1) 1. . PBOPEBTY REQUIBRYENT. TYPB OF MOBTAB F--_-_--7 Sodium Silioate (2) Working time, Min,et 27 f 2'C ( minutes ) Flexursl strength. Mb, kg/cm* ( et 7 deyr ) Compressive strength, Mfn, kg/cm' ( at 7 days ) Bond strength, Min, kg/cm' Absorption of to1uene, Max, percent by weight (3) 16 35 100 6 18 Potassium Silicate 20 49 160 6 13 METHOD or Tmrx, REI TO CL No. or I6 : 4456&m I)- (4) *. 0 7 3 9 2. 3. 4. 6. *Methods of test for ohemioal reeistant mortars : Pert I Silicate type and main type. 5. CHEMICAL RESISTANCE REQUIREMENT 5.1 The limits of chemical resistance may be mutually agreed to between the purchaser and the supplier when tested in accordance with IS : 4456 ( Part I )-1967*. type snd min *Methods of test for ohemioel resirtsnt mortlrrs: Pert 1,Silioste type 5 IS:4832(Part 6. SAMPLING 6.1 The method the criteria I)-1969 of drawing representative samples of the material for conformity shall be as given in Appendix A. and 7. PACKING AND MARKING silicate solution shall be packed in suitable sealed containers. The dry mix shall he properly packaged to prevent The following information shall be -marked ration in storage. on each package: a> Name of manufacturer, No., b) Date of manufacture/batch Net volume/weight in case of solution, 4 d) Net weight in case of dry mix, e) Storage requiremen$4, f 1 Storage life, and g) Date of expiry. 7.1 The airtight deteriolegibly 7.1.1 Each package may also be marked with the.Standard Mark,, NOTE -The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The Standard Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well defined system of inspection, testing and quality control which is devised and supervised by BIS and operated by the producer. Standard marked products are also continuously checked by BIS for conformity to that Details of conditions under which a licence for standard as a further safeguard. the use of the Standard Mark may be granted to manufacturers or producers may be obtained,from the Bureau of Indian Standards. APPENDIX ( Clause 6.1 ) SAMPLING PROCEDURE A-l. A TEST FOR ACCEPTANCE LOT A-l.1 The quantity of binder and filler from the same manufacturing unit offered for inspection in one lot shall be such as to give not less than 1000 kg of the mortar when mixed well by suitable means. 6 IS:4832(Port ascertaining its conformity to the requirements I)-1969 for A-1.2 Samples shall be selected and tested from each lot separately of the specification. A-2. SELECTION -2.1 Since the mortar is obtained by intimately mixing the and he binder which are packed separately, as a first step suitable number e f containers of the filier and binder shall be selected from the lot. 6 he number of containers shall not be less than 10 percent of the total number of containers in the lot. Equal quantities of material shall be taken from each container selected and the filler and the binder-shall be mixed well to give the sample of mortar for the lot. A-3. CRITERIA diler FOR CONFORMITY A-3.1 Specimens shall be taken from the mortar sample and tested for all the requirements given in Table 1 -of this standard. A-3.2 A lot shall be considered as having satisfied the requirements of this specification if the results for all the tests satisfy the relevant requirements of this specification. A-3.3 Re-test - If the sample, when tested, do not comply with the requirements specified in Table 1, another set of sample shall be prepared from the same lot and subjected to the tests. If the second sample also fails to comply with the requirements of Table 1 then the lot represented by the samples shall be rejected. AMENDMENT NO. 1 JUNE l981 TO IS : 4832 ( Part I )-1969 SPECIFICATION FOR CHEMICAL RESISTANT MORTARS PART I SILICATE Alteration (Pages 4 and 5, clause 3.1 ) -Substitute TYPE existing clause: the following for the `3.1 Binders - The liquid binder may be a solution of sodium silicate or potassium silicate with sihca/sodium oxide or silica/potassium oxide molecular ratio of 3 to 3.7. The solution may `have a specific gravity of 1.4 and shall be capable of forming chemical resistant mortar when mixed with a powder consisting of suitable setting agent and filler material.' Addenda the I&!~~ " c ause 5.1) ' Add the following new matter at the end of to ` A general guide for chemical resistance of silicate type mortars various substances is given at Table 1 of IS : 4441-1980t.' ( Page 5, foot-note with `*' mark ) -Add after `*' mark: the following new foot-note `+Code of practice for use of silicate type chemical resktant mortars (jrst r&.&n). (BDCS) Printed at Simco Prtntino Press. Delhi. lndi