Specifications and Protocols for Acceptance Tests on Processing Additions in Cement Manufacturing (2008) / Chapter Skim
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From page 65... ...
ATTACHMENTS This section of the report includes two attachments: 1. Proposed Standard Specification for Mineral Processing Additions for Use in the Manufacture of Hydraulic Cements 2.
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67 Proposed Standard Specification for MINERAL PROCESSING ADDITIONS FOR USE IN THE MANUFACTURE OF HYDRAULIC CEMENTS AASHTO Designation: M xxx 1. SCOPE 1.1 This specification pertains to the criteria and tests to be used for determining whether a single mineral processing addition, when used in the recommended amount at the option of the cement producer greater than 1%, up to and including 5.0% by mass in the manufacture of hydraulic cements, meets the requirements as prescribed by definition in specifications M 85 and M 240.
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68 T 196 Air Content of Freshly Mixed Concrete by the Volumetric Method T 231 Capping Cylindrical Concrete Specimens M 85 Portland Cement M 240 Blended Hydraulic Cement 2.2 ASTM Standards: C 33 Concrete Aggregates C 192 Making and Curing Concrete Test Specimens in the Laboratory C 226 Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic Cement C 596 Drying Shrinkage of Mortar Containing Portland Cement D 891 Specific Gravity, Apparent, of Liquid Industrial Chemicals E 203 Water Using Volumetric Karl Fischer Titration 3. MATERIALS 3.1 Cements: 3.1.1 The proposed addition shall be limited in use to a single plant, and the tests and test procedures shall be as specified and at least two pairs of cements shall be prepared from clinker representing each type under specific consideration.
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70 under test. The effect of the addition on the properties of the cement shall also be within the following limits: 4.5.1 The autoclave expansion of cement containing the addition, expressed as a percentage change in length, shall be not more than 0.10 greater than that of the corresponding control cement.
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71 4.5.8 The flexural strength of concrete made with cement containing the addition shall be compared with strengths obtained with the control cement at similar ages up to 28 days. The grand average of these individual strength percentages shall be not less than 90 % of the values for the control cement.
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72 7. TESTS ON CEMENT 7.1 Test cement in accordance with the following standards: 7.1.1 Chemical Analysis of Cement -- T 105.
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73 8.3 Mixing of Concrete -- Mix the concrete in accordance with ASTM C 192 except as follows: Hand mixing will not be permitted. The rated capacity of the machine mixer shall not be more than twice the size of the batch used.
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74 12. REPORT 12.1 The report covering the results of the evaluation of a material proposed for use as a processing addition in the manufacture of portland cement under this specification shall include the following information: 12.1.1 Trade name, source and character of the material, and the amount recommended for use, together with means for determination of the proposed addition in the finished cement, all as furnished by the sponsor, manufacturer, or seller of the addition, 12.1.2 If the proposed processing addition is a liquid, the specific gravity and percent water content by mass, 12.1.3 Detailed results of all analyses and tests prescribed by this specification, and the amount of the addition used, as well as other pertinent information required, 12.1.4 Comparison of test results to determine compliance with the requirements prescribed in 4.4, 12.1.5 Name and location of the laboratory or laboratories that made the tests covered by the report, 12.1.6 Include as an appendix to the report, letters of certification from the various cement manufacturers stating the name of the addition, the amount used, and the type of cement in which used, and 12.1.7 The highest amount of addition that has demonstrated compliance with the specification in a particular type of cement (see 4.4.3)
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75 Proposed Standard Specification for PORTLAND CEMENT AASHTO Designation: M 85-xx ASTM Designation: C 150-xx 1.
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76 T 107, Autoclave Expansion of Hydraulic Cement T 127, Sampling and Amount of Testing of Hydraulic Cement T 131, Time of Setting of Hydraulic Cement by Vicat Needle T 137, Air Content of Hydraulic Cement Mortar T 153, Fineness of Hydraulic Cement by Air Permeability Apparatus T 154, Time of Setting of Hydraulic Cement by Gillmore Needles T 186, Early Stiffening of Hydraulic Cement (Paste Method) M xxx, Mineral Processing Additions for Use in the Manufacture of Hydraulic Cements 2.2.
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77 4.1.4. Any optional physical requirem ents from Table 4, if desired.
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78 portland cement clinker, no additional testing is required. For dosages greater than 1% and up to 5.0% such materials may be used provided they have been shown to meet the requirements of M xxx.
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79 Table 3 -- Standard Physical Requirements Cement Typea Applicable Test Method I IA II IIA III IIIA IV V Air content of mortar, volume, percent:b T 137 Max 12 22 12 22 12 22 12 12 Min -- 16 -- 16 -- 16 -- -- Fineness, specific surface,m2/kg (alternative methods) : c Turbidimeter test: T 98 Average value, mind 160 160 160 160 -- -- 160 160 Min value, any one samplee 150 150 150 150 -- -- 150 150 Average value, maxd -- -- 240f 240f -- -- 240 -- Max value, any one samplee -- -- 245f 245f -- -- 245 -- Air permeability test: T 153 Average value, mind 280 280 280 280 -- -- 280 280 Min value, any one samplee 260 260 260 260 -- -- 260 260 Average value, maxd -- -- 420f 420f -- -- 420 -- Max value, any one samplee -- -- 430f 430f -- -- 430 -- Autoclave expansion, max, percent T 107 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 Strength, not less than the value shown for the ages indicated below: f Compressive strength, MPa (psi)
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80 Table 4 -- Optional Physical Requirementsa Cement Type Applicable Test Method I IA II IIA III IIIA IV V False set, final penetration, min, percent T 186 50 50 50 50 50 50 50 50 Heat of hydration: ASTM C 186 7 days, max, kJ/kg (cal/g)
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81 9.1.9. Time of Setting by Gillmore Needles -- T 154; 9.1.10.
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82 marked on each package. When the cement is an air-entraining type, the words "air-entraining" shall be plainly marked on each package.
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83 A1.3. When the ratio of percentages of aluminum oxide to ferric oxide is 0.64 or more, the percentages of tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium aluminoferrite shall be calculated from the chemical analysis as follows: Tricalcium silicate (C3S)
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84 A1.5.1. An example of the calculation is shown in the following table Sam ple PA Calculation Base Cement Percentage PA in sample 3.7 Analyte % % % SiO 2 19.94 32.44 =(19.94-(32.44*
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85 APPENDIX (Nonmandatory Information)
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86 ABC Portland Cem ent Com pany Qualitytown, NJ Plant Exam ple Cem ent Type II Date March 9, 2002 Production Period March 2, 2002–March 8, 2002 STANDARD REQUIREMENTS M 85, Tables 1 and 3 CHEMICAL PHYSICAL Item Spec. Lim it Test Result I tem Spec.
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