SH/T 0780-2005 Determination of Demulsibility of Emulsified Asphalt

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Card type: Test method

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

• Standard number: SH/T 0780—2005
• Chinese title: Determination of Demulsibility of Emulsified Asphalt
• English title: Determination of demulsibility of emulsified asphalt
• Replacement relationship: This standard is first published (original text: This standard is first published)
• Adoption relationship: Modified adoption of ASTM D 244-00 "Test Methods for Emulsified Asphalt" Chapters 34 to 39 "Demulsibility" (English version), redrafted according to ASTM D 244-00 Chapters 34 to 39
• 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 custodianship: Technical custodianship by the Heavy Oil Research Institute of China University of Petroleum (East China)
• Drafting organization: Shengli Refinery of Qilu Branch, China Petroleum & Chemical Corporation
• Main drafters: Chang Yuyan, Zhang Guangqing, Pei Jianjun

2. Scope of application and non-applicability

• 1.1 This standard specifies the test method for determining the chemical demulsibility of emulsified asphalt.
• 1.2 This standard is applicable to the determination of the chemical demulsibility of rapid-setting and medium-setting anionic and cationic emulsified asphalts.
• 1.3 This standard does not address safety regulations related to use; users of the standard are responsible for establishing appropriate safety procedures before use.
• Non-applicability: no explicitly listed non-applicable objects are provided in the available source.

3. Method principle

• Chapter 2 Significance and use: This method determines whether emulsified asphalt is rapid-setting or medium-setting, or classifies emulsified asphalt as rapid-setting or medium-setting, by adding a specified amount and concentration of calcium chloride solution to anionic emulsified asphalt and a specified amount and concentration of sodium dioctyl sulfosuccinate solution to cationic emulsified asphalt, and testing the amount of asphalt obtained by demulsification from the emulsion.

4. Reagents and materials (purity / preparation)

• 4.7 Anhydrous calcium chloride: analytical reagent. Dissolve (1.11 ± 0.01) g anhydrous calcium chloride in distilled water and dilute to 1 L to prepare a calcium chloride aqueous solution with a concentration of 1.11 g/L. Dissolve (5.55 ± 0.01) g anhydrous calcium chloride in distilled water and dilute to 1 L to prepare a calcium chloride aqueous solution with a concentration of 5.55 g/L.
• 4.8 Sodium dioctyl sulfosuccinate: analytical reagent. Dissolve (8.00 ± 0.01) g sodium dioctyl sulfosuccinate in 992 g distilled water to prepare a sodium dioctyl sulfosuccinate solution with a concentration of 0.8%.
• Other reagents: not provided in the available source.
• Note: In the original text 4.7, "concentration force 1.11g/" is source-text extraction noise; according to the context it should be 1.11 g/L, requires confirmation against the source standard (source-text extraction).

5. Apparatus and equipment

• 4.1 Metal sieve: aperture 1.40 mm, square approximately 125 mm × 125 mm, unframed, three pieces.
• 4.2 Metal container: capacity 600 mL, three.
• 4.3 Metal rod: diameter approximately 7.9 mm, round head, three.
• 4.4 Burette: specification 50 mL, graduation value 0.1 mL.
• 4.5 Balance: one balance with maximum weighing capacity 500 g and sensitivity 0.1 g, and one electronic balance with maximum weighing capacity 200 g and sensitivity 0.01 g.
• 4.6 Thermometer: temperature measurement range 0 ℃ to 50 ℃, graduation value 0.1 ℃.
• Note: The graduation value of 4.4 in the original text is "0.ImL"; according to the context it should be 0.1 mL, requires confirmation against the source standard (source-text extraction); the original text "0CC~50°" of 4.6 is source-text extraction noise; according to the context it should be 0 ℃ to 50 ℃, requires confirmation against the source standard (source-text extraction).

6. Recommended operating conditions

• Constant-temperature conditions for specimen and reagents: (25 ± 0.5) ℃, maintain at 2 min or above (see 5.3).
• Reagent dropping rate: add dropwise at a rate of 1 drops per second (see 5.3).
• Drying conditions: place the metal container, metal rod, and residue together at 163 ℃ to dry to constant mass (see 5.5; the original text "163%" is source-text extraction noise; according to the context it should be 163 ℃, requires confirmation against the source standard (source-text extraction)).
• Other operating conditions: not provided in the available source.

7. Sampling and specimen preparation

• 5.1 Use the test method for residue and distillate oil content of emulsified asphalt to determine the percentage distillation residue content of the emulsified asphalt.
• 5.3 In the 600 mL metal containers of three groups of already weighed components, respectively weigh (100 ± 0.1) g emulsified asphalt (the original text "1000.1g" is source-text extraction noise; according to the context it should be (100 ± 0.1) g, requires confirmation against the source standard (source-text extraction)).
• Other sampling and specimen preparation: not provided in the available source.

8. Analytical procedure

• 5.1 Use the test method for residue and distillate oil content of emulsified asphalt to determine the percentage distillation residue content of the emulsified asphalt.
• 5.2 Record the total mass of each group of metal container, metal rod, and metal sieve components.
• 5.3 In the 600 mL metal containers of three groups of already weighed components, respectively weigh (100 ± 0.1) g emulsified asphalt, and keep the weighed emulsified asphalt specimen and the corresponding reagent at (25 ± 0.5) ℃ 2 min or above. For rapid-setting anionic emulsified asphalt or anionic emulsified asphalt of unknown type, use a burette to measure 35 mL of calcium chloride aqueous solution with a concentration of 1.11 g/L; for medium-setting anionic emulsified asphalt, use a burette to measure 50 mL of calcium chloride aqueous solution with a concentration of 5.55 g/L; for cationic emulsified asphalt, use a burette to measure 35 mL of sodium dioctyl sulfosuccinate solution with a concentration of 0.8%, add dropwise into the emulsified asphalt specimen at a rate of 1 drops per second, stir the material in the metal container rapidly and uniformly while adding dropwise, break up lumps coagulated at the edge of the metal container to ensure sufficient stirring of the reagent and emulsified asphalt, and after completion of the dropwise addition, stir for an additional 2 min.
• 5.4 First use a metal sieve to filter off the undemulsified mixture of emulsified asphalt and reagent, then rinse the metal container, residue, metal rod, and metal sieve with distilled water, break up coagulated lumps, filter off the washing liquid, and repeat the operation until the washing liquid is clear.
• 5.5 Place the metal container, metal rod, and residue together at 163 ℃ to dry to constant mass.
• Note: In the original text of 5.4, "thought distilled water" is source-text extraction noise; according to the context it should be "use distilled water", requires confirmation against the source standard (source-text extraction).

9. Qualitative and quantitative determination and calculation formula

• 6 Calculation: subtract the mass of the metal container, metal rod, and metal sieve components from the total mass of the dried components and residue to obtain the mass of demulsified residue. Calculate the demulsibility according to the following formula:
• Formula (original text source-text extraction incomplete): D = A / B × 100
• Where:
  • D: demulsibility, %;
  • A: average mass of residue from three demulsification tests of the emulsified asphalt specimen;
  • B: mass of distillation residue of the emulsified asphalt sample, %.
• Note: The formula area source-text extraction in the original text is severely incomplete ("y", "X.100", "D", "A", "7", etc.); the above formula and symbol meanings are organized according to the context, requires confirmation against the source standard (source-text extraction).

10. Precision

• 7.1 Specifies the reliability for judging test results of rapid-setting anionic emulsified asphalt (95% confidence level):
• 7.1 (repeatability): The difference between repeated test results by an operator shall not exceed the following value:
  • Demulsibility 30% to 100%: repeatability, percentage of the mean 5
• 7.2 The test results provided between laboratories shall not exceed the following value:
  • Demulsibility 30% to 100%: reproducibility, percentage of the mean 30
• 7.3 Precision is temporarily not specified when using sodium dioctyl sulfosuccinate solution to determine the demulsibility of cationic emulsified asphalt.
• Precision is temporarily not specified when using calcium chloride solution to determine the demulsibility of medium-setting anionic emulsified asphalt.
• Note: The clause numbers source-text extraction of 7.1 and 7.2 in the original text are incomplete ("7.1", "7.1", "22", "7.2", "7.3"); the above numbering is organized according to the context, requires confirmation against the source standard (source-text extraction).

11. Report

• Not provided in the available source.

12. Referenced documents

• SH/T 0099.17 Test method for residue and distillate oil content of emulsified asphalt (normative referenced document)
• Informative appendix A: ASTM D 2397-02 cationic emulsified asphalt standard (as a reference for classification)
• Informative appendix B: ASTM D 977-98 emulsified asphalt standard (as a reference for classification)
• Note: The foreword mentions "SH/T 0099.17—2005 'Test method for residue and distillate oil content of emulsified asphalt'"; in the referenced documents of Chapter 3 no date is noted, requires confirmation against the source standard (source-text extraction).

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 Q&A