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JJF 1208-2008 English PDF

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JJF 1208-2008: Calibration Specification for Apparatus for Determining Penetration of Bituminous Materials
Status: Valid

JJF 1208: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJF 1208-2008English239 Add to Cart 3 days [Need to translate] Calibration Specification for Apparatus for Determining Penetration of Bituminous Materials Valid JJF 1208-2008
JJF 1208-1990English199 Add to Cart 2 days [Need to translate] O.T.N.of Angle Divding Table Primary Standard Obsolete JJF 1208-1990

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Basic data

Standard ID JJF 1208-2008 (JJF1208-2008)
Description (Translated English) Calibration Specification for Apparatus for Determining Penetration of Bituminous Materials
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Classification of International Standard 17.040
Word Count Estimation 10,151
Date of Issue 2008-05-23
Date of Implementation 2008-08-23
Quoted Standard JJF 1001-1998; JJF 1059-1999; JJF 1094-2002; GB/T 4509-1998; JT/T 653-2006; JJG 128-2003
Regulation (derived from) AQSIQ Announcement No. 72 of 2008
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to asphalt penetration instrument calibration.

JJF 1208-2008: Calibration Specification for Apparatus for Determining Penetration of Bituminous Materials


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Apparatus for Determining Penetration of Bituminous Materials People's Republic of China National Metrology Technical Specifications Asphalt penetration instrument calibration specification Posted 2008-05-23 2008-08-23 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Asphalt penetration instrument calibration specification This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on May 23, 2008, and from From August 23, 2008 into effect. Focal point. the National Technical Committee of length measuring geometry Drafted by. Chongqing Institute of Metrology and Quality Inspection This specification length measuring geometry commissioned the National Technical Committee is responsible for interpretation The main drafters of this specification. Jiang Cong (Chongqing Institute of Metrology and Quality Inspection) Tao Lei (Chongqing Institute of Metrology and Quality Inspection) Drafters participate. Liu Yaxiong (Chongqing Institute of Metrology and Quality Inspection)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 Overview (1) 4 Metrological characteristics (1) 4.1 Instrument base level Mounting correctness (1) 4.2 standard needle (including needle, the needle rod and weight) of the total mass (1) 4.3 needle body geometry (1) Conical and cylindrical surface of the body of the needle 4.4 roughness Ra (1) 4.5 Temperature indication error (1) 4.6 length measuring indication error (1) Calibration Condition 5 (3) Environmental conditions 5.1 (3) 5.2 standard and calibration items (3) 6 calibration items and calibration methods (3) 6.1 standard installation correctness instrument (3) 6.2 standard needle (including needle, the needle rod and weight) of the total mass (3) 6.3 needle body geometry (3) 6.4 needle conical and cylindrical surface roughness (4) 6.5 Temperature indication error (4) 6.6 length measuring indication error (4) 7 Calibration Results The expression (4) 8 Recalibration interval (4) The technical requirements of Appendix A metrological characteristics (5) Asphalt penetration instrument calibration specification

1 Scope

This instruction applies to asphalt penetration instrument calibration.

2 Citations

This specification references the following documents. JJF 1001-1998 "common measurement terms and definitions" JJF 1059-1999 "Evaluation and Expression of Uncertainty in Measurement" JJF 1094-2002 "measuring instrument characteristics assessed" GB/T 4509-1998 "Determination of asphalt penetration" JT/T 653-2006 "road asphalt penetration tester" JJG128-2003 "second-class standard mercury thermometer" When using this specification it should be noted that using the currently valid version of the documents cited.

3 Overview

Asphalt penetration tester is to measure the physical properties of the asphalt index instruments. It is used in line with the provisions of shape, size and quality Standard pin, so that the tip surface of bituminous materials tested under specified temperature conditions and in contact with the surrounding support no friction Under rub state, by self-weight into the asphalt. According to the standard needle within a specified period of time measured bituminous material is pressed into the depth of eligible Obtained bitumen has a penetration index. 1 Penetration index represents the indentation depth of 0.1mm. Asphalt penetration tester is divided into manual and automatic. Form the basic structure --- manual asphalt penetration tester shown in Figure 1, the thermometer in the water bath temperature was Shown, manual control is pressed into the length of time to read the indentation depth. --- Automatic form the basic structure of asphalt penetration instrument 2, the inner temperature of the water bath was automatically controlled and FIG. Shows, pressed into the indentation depth and length of time to automatically collect and display.

4 Metrological characteristics

4.1 Installation of the instrument base level correctness 4.2 standard needle (including needle, the needle rod and weight) of the total mass 4.3 needle body (FIG. 3) of the geometric parameters 4.3.1 needle diameter cylindrical portion D. 4.3.2 taper at the small diameter d; needle cone angle φ. 4.3.3 needle cone and cylinder concentricity a. Cone small end of the cone with a vertical axis of the needle deviation 4.3.4 b. The surface roughness Ra 4.4 needle conical and cylindrical 4.5 Temperature indication error 4.6 length measuring indication error

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