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ASTM-C191:2008 Edition

ASTM-C191:2008 Edition

$40.63

C191-08 Standard Test Methods for Time of Setting of Hydraulic Cement by Vicat Needle

Published By Publication Date Number of Pages
ASTM 2008 8
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1.1 These test methods determine the time of setting of hydraulic cement by means of the Vicat needle. Two test methods are given; Method A is the Reference Test Method using the manually operated standard Vicat apparatus, while Method B permits the use of an automatic Vicat machine that has, in accordance with the qualification requirements of this method, demonstrated acceptable performance.

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 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. See 1.4 for a specific warning statement.

1.4 Warning Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. The use of gloves, protective clothing, and eye protection is recommended. Wash contact area with copious amounts of water after contact. Wash eyes for a minimum of 15 min. Avoid exposure of the body to clothing saturated with the liquid phase of the unhardened material. Remove contaminated clothing immediately after exposure.

1.5 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.

Note 1For the method for determining the time of setting by Gillmore needles, see Test Method C 266 .

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
Summary of Test Method
2 Significance and Use
Apparatus
Reagents and Materials
Sampling
Conditioning
Preparation of Cement Paste
Calculation
3 Report
Manual Vicat Apparatus
Procedure A
Precision and Bias
Automatic Vicat Apparatus
Procedure
4 Performance Requirement (Qualification) for Automatic Vicat Instrument
Requalification of a Method
5 Precision and Bias
Keywords
A1. VICAT APPARATUS
A1.1
6 A2. PERFORMANCE REQUIREMENT (QUALIFICATION) FOR AUTOMATIC VICAT INSTRUMENT
A2.1
A2.2 Hydraulic Cement Samples Required
A2.3 Tests
A2.4 Calculations
A2.5 Standardization
FIG. A1.1
7 A3. REQUALIFICATION OF A METHOD
A3.1
A3.2
A3.3
A3.4
A3.5
X1. SAMPLE QUALIFICATION RESULTS
TABLE X1.1
8 TABLE X1.2

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