SH/T 0781-2005 Test method for miscibility with water of emulsified asphalt

AI-translated method card — human verification pending. This is not an official translation of the standard. Unclear source values remain unverified; check the original standard and product certificate before use.

Incomplete source content: The method principle, some apparatus specifications and part of the report are missing or unreadable in the available source. Precision, a calculation formula and the normative-reference list were not found. Only the available content is translated; the affected sections below remain marked for verification.

Card type: Test method

1. Method number / full name / English name / replacement relationship

• Standard number: SH/T 0781—2005
• Chinese title, translated: Test method for miscibility with water of emulsified asphalt
• English name: Test method for miscibility with water of emulsified asphalt
• Replacement relationship: first publication of this standard (the source states that this is its first publication).
• Adoption relationship stated in the source: modified adoption of Sections 63~65, Miscibility with Water of Emulsified Asphalt, in ASTM D 244-00, Test Methods for Emulsified Asphalts (English edition); redrafted on the basis of ASTM D244-00 Sections 63~65.
• Main differences from ASTM D244-00 Sections 63~65, as stated in the source:
  • The ASTM format was changed to conform to the format of Chinese standards, with editorial language changes;
  • The time for adding distilled water and the stirring speed were added;
  • A test report was added.
• Publication/implementation: published on 2005-11-28; implemented on 2006-06-01.
• Issuing authority: National Development and Reform Commission of the People's Republic of China.
• Technical coordination: Heavy Oil Research Institute, China University of Petroleum (East China).
• Proposed by: China Petrochemical Corporation.
• Drafting organization: Shengli Refinery, Qilu Branch, China Petroleum & Chemical Corporation.
• Principal drafters: Yu Guilian, Yao Dehong and Pei Jianjun.

2. Scope and exclusions

• 1.1 This standard specifies a test method for the stability of emulsified asphalt after mixing with water.
• 1.2 The method applies to medium-setting and slow-setting emulsified asphalt. The extracted scope statement is garbled; this wording follows the source card's contextual reading and requires confirmation against the source standard (source-text extraction).
• 1.3 This standard does not address the safety provisions associated with its use. Users are responsible for establishing suitable safety procedures before use.

3. Principle

• The source extraction of Section 2, Summary of method, is severely incomplete. Only fragments such as 'at 21℃', '2h', 'in emulsified asphalt' and 'examine' can be recognized. A complete statement of the principle is not available and requires confirmation against the source standard (source-text extraction).

4. Reagents and materials (purity / preparation)

• Distilled water: mentioned in source clause 5.2; specifications and purity are not provided in the available source.
• The detailed names and specifications for items 4.1~4.6 are missing from the source extraction and require confirmation against the source standard (source-text extraction).

5. Apparatus

• 4.1 Glass stirring rod: 1 rod.
• 4.2 Capacity: 500mL. The extraction reads 'capacity 500mL'; the following text is missing and requires confirmation against the source standard (source-text extraction).
• 4.3 Graduated cylinder: its name is identifiable in the extraction, but the specification is missing and requires confirmation against the source standard (source-text extraction).
• 4.4 Capacity: 50mL. The extraction includes 50mL with garbled surrounding text; confirmation against the source standard is required (source-text extraction).
• 4.5 Thermometer: 0℃~50℃, with a division of 0.5℃. The extracted range and division read '0°C~50°C, division 0.5°C'; the quantity is unreadable and requires confirmation against the source standard (source-text extraction).
• 4.6 Not found in the available source; confirmation against the source standard is required (source-text extraction).

6. Recommended operating conditions

• Control the temperature during the test between 21℃~25℃. Source clause 5.2 states that the temperature must be maintained at 21~25℃; the extracted text contains '21 -2512' followed by an unreadable character. Confirmation against the source standard is required (source-text extraction).
• Standing temperature: 21℃~25℃ (source clause 5.3).
• Standing time: 2h (source clause 5.3).
• Stirring speed: 1 r/s. Source clause 5.2 contains the garbled fragment '1r/' followed by unreadable text; the source card interprets it contextually as 1 r/s, requiring confirmation against the source standard (source-text extraction).
• Distilled-water addition time: add slowly within 1 minute. Source clause 5.2 states 'add slowly to the emulsified asphalt within one minute'; the extracted wording is garbled and requires confirmation against the source standard (source-text extraction).

7. Sampling and sample preparation

• 5.1 Use a 50mL graduated cylinder to measure 50mL of emulsified asphalt.
• Other sampling and sample-preparation details were not found in the available source.

8. Procedure

• 5.1 Use a 50mL graduated cylinder to measure 50mL of emulsified asphalt.
• 5.2 Use a 150mL graduated cylinder to measure 150mL of distilled water. Add it slowly to the emulsified asphalt within 1 minute while stirring continuously with a glass rod at 1 r/s. Maintain the temperature between 21℃~25℃ during the test. The extraction contains '150m' followed by garbled wording and '150mL distilled water'; the source card contextually interprets the cylinder specification as 150mL, requiring confirmation against the source standard (source-text extraction).
• 5.3 After all the distilled water has been added, leave the emulsion to stand at 21℃~25℃ for 2h.
• 5.4 Examine the emulsified asphalt liquid for visible lumps of coagulated asphalt.

9. Qualitative determination and calculation

• Qualitative determination (source clauses 6.1 and 6.2):
  • In the emulsion after addition of water: the content of source clause 6.1 is missing from the extraction and requires confirmation against the source standard (source-text extraction).
  • If visible lumps of coagulated asphalt are present, the source card interprets the emulsion as failing the stability requirement for mixing with water. The original extracted judgement is garbled; this contextual reading requires confirmation against the source standard (source-text extraction). More coagulated asphalt lumps indicate poorer stability when mixed with water.
  • If no visible lumps of coagulated asphalt are present, the emulsion is judged to pass the stability requirement for mixing with water. The extracted text states that the stability passes; confirmation against the source standard is required (source-text extraction).
• Calculation formula: not found in the available source.

10. Precision

• Not found in the available source.

11. Report

• 6 Test report:
  • 6.1 In the emulsion after water addition: the specific reporting content is missing from the extraction and requires confirmation against the source standard (source-text extraction).
  • 6.2 If visible lumps of coagulated asphalt are present, the emulsion is judged to fail the stability requirement for mixing with water; more coagulated asphalt lumps indicate poorer stability when mixed with water.
  • If no visible lumps of coagulated asphalt are present, the emulsion is judged to pass the stability requirement for mixing with water.
• Note: the foreword states that a test report was added compared with ASTM D244-00 Sections 63~65.

12. References

• Not found in the available source; no list of normative references appears in the available body text.

13. Source and verification

This page is an AI translation of the available Chinese method card. Human verification is pending. It is not an official translation of the standard. Check the source standard and product certificate before use.

14. Quick reference questions