Q61 石棉材料 标准查询与下载
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The degree of fiberization or subdivision of the asbestos fiber bundles in a specimen is related to its resistance to air flow. The number and size of the pores in the specimen are a function of the size of the fiber bundles and determine the resistance to air flow through the plug. Test specimens that have undergone a higher degree of fiberization will yield higher results provided the specimens compared are of similar specific gravities and other properties are not markedly different. These test methods are suitable for specification acceptance, manufacturing control, development, and applied research. It must not be assumed that all test specimens with equal test results have undergone equivalent degrees of fiberization. Some types of asbestos fiberize more readily than others. Particle size distribution and harshness can also influence permeability.1.1 These test methods cover the measurement of the relative degree of openness or degree of fiberization of milled asbestos fiber by air permeability instruments. 1.2 Method A is the recommended procedure and describes a determination by means of the Rapid Surface Area apparatus. This test method is limited to fibers with an effective surface area in the range from 10 to 250 dm2/g [490 to 12 000 ft2/lb]. 1.3 Method B is an alternative procedure and covers the use of the Dyckerhoff apparatus. This test method is limited to fibers within the range from 10 to 600 Dyckerhoff seconds. 1.4 Only those asbestos specimens which are of similar specific gravities will bear strict comparison by these air permeability methods since differences in density result in specimens being tested under different conditions of porosity. 1.5 Samples containing excessive quantities of nonfibrous particles or contaminants will not give reliable or meaningful results. 1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.7 Warning8212;Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysotile asbestos, refer to “Safe Use of Chrysotile: A Manual on Preventive and Control Measures.” 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ^REFERENCE: ASTM Standards: D2590 Test Method for Sampling Chrysotile Asbestos D3879 Test Method for Sampling Amphibole Asbestos (Withdrawn) E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods Other Standard: NNN-P-1475B Federal Specification for Paper, Filter, Ana......
Standard Test Methods for Air Permeability of Asbestos Fibers
- ICS
- 59.060.30 (Mineral and metal fibres)
- CCS
- Q61
- 发布
- 1988
- 实施
Test results give some indication of the apparent fiber length distribution in the sample tested. Sieves are ideally suited to measure particle size and particle size distribution when all three axes of the particle are equidimensional or the particle is of spherical shape. Asbestos fibers differ considerably from these ideal conditions and, therefore, results depart from a true measure of fiber length and length distribution. Characteristics that influence screening efficiency influence test results. Among these are moisture content, degree of fiberization, harshness, and the tendency for fibers to cling together, and of short fibers and fines to cling to longer fibers. In spite of its shortcomings, this test method is particularly useful because of its simplicity and speed and satisfactory reproducibility. The test is suitable for specification acceptance and manufacturing control.1.1 This test method covers a dry screen analysis for asbestos fiber by means of a mechanical sieve shaker. 1.2 This test method is limited in its application to Group 4 and shorter chrysotile asbestos fiber samples as defined in Test Method D3639. However, some short amphibole asbestos fibers may be suitable for evaluation by this method. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.4 WarningBreathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysoltile asbestos, refer to “Safe Use of Chrysotile Asbestos: A Manual on Preventive and Control Measures.” 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific safety hazard, see 1.4. ^REFERENCE: ASTM Standards: D2590 Test Method for Sampling Chrysotile Asbestos D2946 Terminology for Asbestos and Asbestosx02013;Cement Products D3639 Test Method for Classification of Asbestos by Quebec Standard Test D3879 Test Method for Sampling Amphibole Asbestos (Withdrawn) E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
Standard Test Method for Screen Analysis of Asbestos Fibers
- ICS
- 91.100.15 (Mineral materials and products)
- CCS
- Q61
- 发布
- 1988
- 实施
1.1 These test methods cover the measurement of the relative degree of openness or degree of fiberization of milled asbestos fiber by air permeability instruments.1.2 Method A is the recommended procedure and describes a determination by means of the Rapid Surface Area apparatus. This test method is limited to fibers with an effective surface area in the range from 10 to 250 dm2/g (490 to 12000 ft2/lb).1.3 Method B is an alternative procedure and covers the use of the Dyckerhoff apparatus. This test method is limited to fibers within the range from 10 to 600 Dyckerhoff seconds.1.4 Only those asbestos specimens which are of similar specific gravities will bear strict comparison by these air permeability methods since differences in density result in specimens being tested under different conditions of porosity.1.5 Samples containing excessive quantities of nonfibrous particles or contaminants will not give reliable or meaningful results.1.6 The values stated in SI units are to be regarded as the standard. The inch-pound units in parentheses are provided for information only.1.7 Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysotile asbestos, refer to "Safe Use of Chrysotile: A Manual on Preventive and Control Measures."1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Test Methods for Air Permeability of Asbestos Fibers
- ICS
- 59.060.30 (Mineral and metal fibres)
- CCS
- Q61
- 发布
- 1988
- 实施
This test method will give a value of moisture content obtained under specified conditions. This value should not be considered as an absolute moisture content. Results may not compare with those obtained by the same method under different conditions, or by different methods.1.1 This test method covers the determination of the moisture content of asbestos fiber. 1.2 Warning8212;Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysotile asbestos, refer to “Safe Use of Chrysotile: A Manual on Preventive and Control Measures.” 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ^REFERENCE: ASTM Standards: D2590 Test Method for Sampling Chrysotile Asbestos D2946 Terminology for Asbestos and Asbestosx02013;Cement Products D3879 Test Method for Sampling Amphibole Asbestos (Withdrawn)
Standard Test Method for Moisture Content of Asbestos Fiber
- ICS
- 59.060.30 (Mineral and metal fibres)
- CCS
- Q61
- 发布
- 1988
- 实施
1.1 These test methods cover the measurement of the relative degree of openness or degree of fiberization of milled asbestos fiber by air permeability instruments.1.2 Method A is the recommended procedure and describes a determination by means of the Rapid Surface Area apparatus. This test method is limited to fibers with an effective surface area in the range from 10 to 250 dm2/g (490 to 12 000 ft2/lb).1.3 Method B is an alternative procedure and covers the use of the Dyckerhoff apparatus. This test method is limited to fibers within the range from 10 to 600 Dyckerhoff seconds.1.4 Only those asbestos specimens which are of similar specific gravities will bear strict comparison by these air permeability methods since differences in density result in specimens being tested under different conditions of porosity.1.5 Samples containing excessive quantities of nonfibrous particles or contaminants will not give reliable or meaningful results.1.6 The values stated in SI units are to be regarded as the standard. The inch-pound units in parentheses are provided for information only.1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Test Methods for Air Permeability of Asbestos Fibers
- ICS
- 59.060.30 (Mineral and metal fibres)
- CCS
- Q61
- 发布
- 1988
- 实施
The degree of fiberization or subdivision of the asbestos fiber bundles in a specimen is related to its resistance to air flow. The number and size of the pores in the specimen are a function of the size of the fiber bundles and determine the resistance to air flow through the plug. Test specimens that have undergone a higher degree of fiberization will yield higher results provided the specimens compared are of similar specific gravities and other properties are not markedly different. These test methods are suitable for specification acceptance, manufacturing control, development, and applied research. It must not be assumed that all test specimens with equal test results have undergone equivalent degrees of fiberization. Some types of asbestos fiberize more readily than others. Particle size distribution and harshness can also influence permeability.1.1 These test methods cover the measurement of the relative degree of openness or degree of fiberization of milled asbestos fiber by air permeability instruments.1.2 Method A is the recommended procedure and describes a determination by means of the Rapid Surface Area apparatus. This test method is limited to fibers with an effective surface area in the range from 10 to 250 dm2/g (490 to 12000 ft2/lb).1.3 Method B is an alternative procedure and covers the use of the Dyckerhoff apparatus. This test method is limited to fibers within the range from 10 to 600 Dyckerhoff seconds.1.4 Only those asbestos specimens which are of similar specific gravities will bear strict comparison by these air permeability methods since differences in density result in specimens being tested under different conditions of porosity.1.5 Samples containing excessive quantities of nonfibrous particles or contaminants will not give reliable or meaningful results.1.6 The values stated in SI units are to be regarded as the standard. The inch-pound units in parentheses are provided for information only.1.7 Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysotile asbestos, refer to "Safe Use of Chrysotile: A Manual on Preventive and Control Measures."This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Test Methods for Air Permeability of Asbestos Fibers
- ICS
- 59.060.30 (Mineral and metal fibres)
- CCS
- Q61
- 发布
- 1988
- 实施
Normally, results obtained by this test method are reproducible under comparable laboratory conditions. However, it must not be expected that results obtained by different operators at various laboratories and times will be in exact agreement due to some seemingly minor procedural change. Moreover, results for longer fiber grades are influenced to a greater extent by differences in fiber length distribution and characteristics than those of shorter grades.1.1 This test method covers the determination of the length distribution and fines content of milled asbestos fiber by wet classification employing the McNett fiber classifier. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 Warning8212;Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysotile asbestos, refer to “Safe Use of Chrysotile: A Manual on Preventive and Control Measures.” 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ^REFERENCE: ASTM Standards: D2590 Test Method for Sampling Chrysotile Asbestos D2946 Terminology for Asbestos and Asbestosx02013;Cement Products D3639 Test Method for Classification of Asbestos by Quebec Standard Test D3879 Test Method for Sampling Amphibole Asbestos (Withdrawn) E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods ASTM Adjunct: Screen Clearing Device Drawings
Standard Test Method for McNett Wet Classification of Dual Asbestos Fiber
- ICS
- 59.060.30 (Mineral and metal fibres)
- CCS
- Q61
- 发布
- 1988
- 实施
Test method for properties of asbestos paper and board
- ICS
- CCS
- Q61
- 发布
- 1982-04-05
- 实施
- 1982-07-01
Rock wool isolating material for floating floors
- ICS
- 91.120.25
- CCS
- Q61
- 发布
- 1979-03-01
- 实施
This British Standard specifies the requirements for the construction and testing of rubber bonded compressed asbestos fibre jointing material, with or without wire mesh reinforcement, for aerospace purposes.
Specification for rubber bonded compressed asbestos fibre jointing
- ICS
- 49.025.40
- CCS
- Q61
- 发布
- 1973-11-19
- 实施
- 1973-11-19
ASBESTOS BOARD. GENERAL CHARACTERISTICS AND TEST METHODS.
- ICS
- CCS
- Q61
- 发布
- 1969-01
- 实施
- 1968-12-23
