北检（北京）检测技术研究院

These test methods provide accurate and reliable analytical procedures to determine the chemical constituents of limestone quicklime and hydrated lime (See Note 1). The percentages of specific constituents which determine a materialrsquo;quality or fitness for use are of significance depending upon the purpose or end use of the material. Results obtained may be used in relation to specification requirements.

Because quicklime and hydrated lime quickly absorb water and carbon dioxide from the air precision and bias are extremely dependent upon precautions taken during sample preparation and analysis to minimize excessive exposure to ambient conditions.

Note 18212;These test methods can be applied to other calcareous materials if provisions are made to compensate for known interferences.

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:

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 precautionary statements see and .

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:

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 precautionary statements see Notes 11 13 27 47 X2.1 and X5.1.

1.1 These test methods cover physical testing of quicklime and hydrated lime and of limestone not otherwise covered in ASTM standards.

Note 18212;Quicklime and hydrated lime have a high affinity for moisture and carbon dioxide. Caution should be taken to protect both hydrated and quicklime during sampling storage and testing (see Practice C50).

1.1 These test methods cover physical testing of quicklime and hydrated lime and of limestone not otherwise covered in ASTM standards. Note 1Quicklime and hydrated lime have a high affinity for moisture and carbon dioxide. Caution should be taken to protect both hydrated and quicklime during sampling storage and testing (see Practice C 50).

1.2 The test procedures appear in the following order:

1.3 The values stated in SI units are to be regarded as the standard.

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.

1.1 This specification covers high calcium dolomitic and magnesian-hydrated lime for use in asphalt cement or bituminous pavement.

Hydrated lime either calcitic dolomitic or magnesian improves bonding of bitumen and aggregates which reduces susceptibility to moisture damage reduces age hardening by chemically stabilizing polar compounds found in asphalts and increases initial stiffness of asphalt mixtures.

No attempt is made to present requirements for any by-product lime.

This standard does not purport to address the safety concerns 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.

1.1 This specification covers lime and limestone products suitable for chemical uses as shown in . The type designations signify the following:

Note 18212;Lime is used in environmental systems when the control of factors influencing the environment such as gases liquids and solids is required.

1.2 The buyer shall designate the use as listed in Table 1 and may specify one or more of the type designations in 1.1.