Normas Astm

Designation: C 5 – 03

Standard Specification for

Quicklime for Structural Purposes1
This standard is issued under the fixed designation C 5; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates aneditorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

1. Scope 1.1 This specification covers all classes of quicklime such as crushed lime, granular lime, ground lime, lump lime, pebble lime, and pulverized lime, used for structural purposes. 2. Referenced Documents 2.1 ASTM Standards: C 25 Test Methods for ChemicalAnalysis of Limestone, Quicklime, and Hydrated Lime2 C 50 Practice for Sampling, Inspection, Packing, and Marking of Lime and Limestone Products2 C 51 Terminology Relating to Lime and Limestone (As Used by the Industry)2 C 110 Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone2 C 1489 Specification of Lime Putty for Structural Purposes2 E 11 Specification for Wire-ClothSieves for Testing Purposes3 3. Terminology 3.1 Definitions—Unless otherwise specified, for definitions of terms used in this standard, refer to Terminology C 51. 4. Chemical Composition 4.1 The quicklime shall conform to the following requirements as to chemical composition, calculated on a nonvolatile basis:

Calcium Lime Calcium oxide, min, % Magnesium oxide, min, % Calcium and magnesium oxide, min,% Silica, alumina, and oxide of iron, max, % Carbon dioxide, max, %: If sample is taken at place of manufacture If sample is taken at any other place 75 95 5

Magnesium Lime

20 95 5

3 10

3 10

5. Residue 5.1 The quicklime shall contain no more than 15 weight % of residue. 6. General Requirements 6.1 Quicklime shall be slaked and aged in accordance with the printed directions of themanufacturer. The resulting lime putty shall be stored until cool. 6.2 Lime putty prepared in accordance with Appendix X1.4.2 must conform to the requirements of Specification C 1489. 7. Sampling, Inspection, etc. 7.1 The sampling, inspection, rejection, retesting, packaging, and marking shall be conducted in accordance with Methods C 50. 8. Test Methods 8.1 Conformance to chemical requirements shallbe determined in accordance with Test Methods C 25. 8.2 Conformance to plasticity and residue requirements shall be determined in accordance with Test Methods C 110.

1 This specification is under the jurisdiction of ASTM Committee C07 on Lime and is the direct responsibility of Subcommittee C07.02 on Structural Lime. Current edition approved May 10, 2003. Published July 2003. Originallyapproved in 1913. Last previous edition approved in 1997 as C 5 – 79 (1997). 2 Annual Book of ASTM Standards, Vol 04.01. 3 Annual Book of ASTM Standards, Vol 14.02.

9. Keywords 9.1 building (structural); calcium oxide; dolomitic lime; high calcium lime; lime putty; magnesium oxide; plasticity; quicklime; residue; slaking

Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, WestConshohocken, PA 19428-2959, United States.

1

C 5 – 03
APPENDIX
(Nonmandatory Information) X1. SLAKING AND PREPARATION OF LIME PUTTY

X1.1 Introduction X1.1.1 Quicklime can never be used as such for structural purposes; it must always be slaked first. Since the method of slaking is an important factor in determining the quality of the finished product, the following directions for thepreparation of lime putty are given, not as a part of the specification, but as information for the further protection of the purchaser. X1.1.2 Different kinds of lime vary considerably in the way in which they behave with water. A little supervision over the operation of slaking will amply pay for itself by ensuring the production of the greatest possible quantity and the best possible quality of putty....