• ASTM C25-19

ASTM C25-19

Standard Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime

ASTM International, 05/01/2019

Publisher: ASTM

File Format: PDF

$41.00$82.00


Published:01/05/2019

Pages:40

File Size:1 file , 660 KB

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1.1 These test methods cover the chemical analysis of high-calcium and dolomitic limestone, quicklime, and hydrated lime. These test methods are classified as either standard (preferred) or alternative (optional).

1.2 The standard test methods are those that employ classical gravimetric or volumetric analytical procedures and are typically those required for referee analyses where chemical specification requirements are an essential part of contractual agreement between buyer and seller.

1.3 Alternative or optional test methods are provided for those who wish to use procedures shorter or more convenient than the standard methods for the routine determinations of certain constituents. Optional test methods may sometimes be preferred to the standard test methods, but frequently the use of modern and expensive instrumentation is indicated which may not be accessible to everyone. Therefore, the use of these test methods must be left to the discretion of each laboratory.

1.4 The analytical procedures appear in the following order:

 

Section

     Aluminum Oxide 

15

     Available Lime Index 

28

     Calcium and Magnesium Oxide:

      Alternative EDTA Titration Method 

31

     Calcium Carbonate Equivalent 

33

     Calcium Oxide:

      Gravimetric Method 

16

      Volumetric Method 

17

     Carbon Dioxide by Standard Method 

22

     Combined Oxides of Iron and Aluminum 

12

     Ferrous Iron 

Appendix X5

     Free Calcium Oxide 

Appendix X6

     Free Moisture in Hydrated Lime 

21

     Free Moisture in Limestone 

20

     Free Silica 

29

     Insoluble Matter Including Silicon Dioxide:

      Standard Method 

8

      Optional Perchloric Acid Method 

9

     Insoluble Matter Other Than Silicon Dioxide 

11

     Loss on Ignition 

19

     Magnesium Oxide 

18

     Manganese:

      Bismuthate Method 

Appendix X4

      Periodate (Photometric) Method 

27

     pH Determination of Alkaline Earth Solutions 

34

     Phosphorus:

      Titrimetric Method 

Appendix X3

      Molybdovanadate Method 

26

     Silicon Dioxide 

10

     Strontium Oxide 

Appendix X2

     Sulfur Trioxide 

23

     Total Carbon:

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