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AS 1946-2002 Sterile hypodermic needles for single use 被代替 发布日期 :  2002-09-27 实施日期 : 

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1.1 This test method covers the determination of the time of setting of portland-cement pastes containing quick-setting accelerating admixtures for shotcrete.1.2 The values stated in SI units are to be regarded as the standard.1.3 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.

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The performance of an admixture for shotcrete in the field varies with the composition of the hydraulic cement and sand combination. Since this test method involves the determination of time of setting of a particular combination of hydraulic cement, sand and an admixture, it therefore provides information on the suitability for use of that particular combination in the field.The time of setting of the combination established in the laboratory does not necessarily indicate the time of setting this combination will produce in actual shotcreting in the field.This method is used to determine the effect on time of setting of mortars containing admixtures as compared to a control mortar.The test method is used for comparison in laboratory pre–evaluation studies to demonstrate the effect of shotcrete admixtures in mortar compared with plain mortar and can be used to demonstrate or compare the performance of shotcrete admixtures which produce rapid setting or rapid rheological stiffening of shotcrete.The test method is used to evaluate the relative performance of more than one shotcrete admixture for comparison of performance.The test method is used to determine or verify that no adverse effects on setting time may be experienced with the use of admixtures that are not intended to accelerate or are used to produce stiffening of shotcrete mixtures.Although specific environmental conditions are indicated, the testing environment can be varied to simulate the performance of admixtures in mortars at different temperatures. Such variations are reported as indicated in Section 11.1.1 This is a laboratory test method that covers the determination of the time of setting of hydraulic-cement mortars containing additives for shotcrete for comparison with control mixes containing no additives or to compare the performance of shotcrete mixtures which contain additives that produce rapid setting or rapid stiffening of shotcrete.1.2 The values stated in SI units (see IEEE/ASTM SI 10) are the standard.This standard may involve hazardous materials, operations, and equipment. 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.

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5.1 The purpose of this test method is to establish whether a cement complies with a specification limit on Gillmore time of setting.1.1 This test method covers the determination of the time of setting of hydraulic-cement paste by means of the Gillmore needles.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of 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 the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)21.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM F3212-16(2023) Standard Test Method for Coring Testing of Huber Needles Active 发布日期 :  1970-01-01 实施日期 : 

5.1 This test method determines whether Huber needles are designed and manufactured such that they will not produce a core during simulated implantable port access.5.2 If a needle produces a core during actual use, leaking of the implantable port may occur. Also, the core may be flushed into the port’s reservoir and subsequently into the patient’s body.1.1 This test method covers the qualitative measurement of Huber-type needles’ potential to remove septum material during implantable port access (1).21.2 This test method does not address other issues that may include, but are not limited to, force measurement during the perforation/withdrawal, septum integrity, and any safety issues.1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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