MSCR Method, Testing & Analysis
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The document discusses the Multiple Stress Creep Recovery (MSCR) test for asphalt binders. It provides an overview of the test including the testing procedure, goals of investigating linear and non-linear performance, an example of test results on a neat and polymer modified asphalt binder, and how to set up the test using Malvern software. The presentation aims to explain how to perform the MSCR test and understand the results.
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![Thank you for your interest & time! Contact information Presenter: John Casola (US based) (+1) 973-740-1543 [email_address] US Helpdesk: (+1) 508 480 0200 Thank you for joining us!!! An audio recording of this presentation will be available on the Malvern website soon. Check back with us regularly for future relevant seminars! www.malvernevents.com On-Demand Presentations](https://image.slidesharecdn.com/mscrmethodtestinganalysis-123845508198-phpapp01/85/MSCR-Method-Testing-amp-Analysis-54-320.jpg)
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MSCR Method, Testing & Analysis
- 1. Multiple Stress Creep Recovery A review of the technology, test set up and analysis. Presenter: John Casola, Asphalt Market & Products Manager
- 2. Outline Selected excerpts from the recent Binder ETG Paper by John DAngelo & Raj Dongre providing background of the method. Discussion of the relationship to Rutting & Elastic Recovery Specifics of the testing procedure Multiple Stress Creep Recovery How to set up and perform the testing Understanding the test & results Creep and Creep Recovery Analysis
- 3. Selected Excerpts from the Binder ETG
- 4. Overview of the premise: By: John DAngelo & Raj Dongre
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- 7. Relationship Modulus Stress G = --------- Strain Compliance Strain J = --------- Stress
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- 20. Procedures are available for use from both ASTM & AASHTO
- 22. Multiple Stress Creep Recovery (MSCR) Applied Stress 100Pa for a 1 second Creep period Remove the Stress for a 9 second Recovery period Repeated for a total of 10 cycles Applied Stress 3200Pa for a 1 second Creep period Remove Stress for a 9 second Recovery period Repeated for a total of 10 cycles Goal it investigate differences in linear & non-linear performance of the binder.
- 24. Accumulated Strain from Repeated Loading
- 25. Accumulated Strain from Repeated Loading on a Modified Binder
- 26. Example of a Newtonian material Neat binder PG64-28 tested to MSCR at 64 o C Jnr 3200 Jnr 100
- 27. Example of a Visco-Elastic Binder Modified binder PG70-28 tested to MSCR at 70 o C 100Pa 3200Pa Jnr 3200 Jnr 100
- 28. Neat Binder; Max Strain ~60% PG 64-28 at 100Pa
- 29. Neat Binder; Max Strain ~2000% PG 64-28 at 3200Pa
- 30. Polymer Modified Binder; Max Strain ~30% PG 70-28 at 100Pa
- 31. Polymer Modified Binder; Max Strain +700% PG 70-28 at 3200Pa
- 32. Calculations
- 33. Reporting
- 34. Setting Up Malvern Software
- 35. Creep / Creep-Recovery Mode
- 36. Create Creep/Creep Recovery 100Pa; 25mm plates Repeat 9 times 1 Sec Creep Time Linear 10 Data points
- 37. Creep Un-check Default sampling Set to 100 Set to 1 Click to Linear Set to 1 Set to 10 for every 0.1s
- 38. Recovery Un-check Default Sampling Click to Linear Set to 9 Set to 20 for every 0.45s Perform Recovery
- 39. Temperature
- 40. Temperature
- 41. Temperature Options Un-Check All
- 42. No of Repeats
- 43. Save the Parameter File as 100pa
- 44. Create Creep/Creep Recovery 3200Pa; 25mm plates Repeat 9 times 1 Sec Creep Time Linear 10 Data points
- 45. Change Creep Stress to 3200 Just change to 3200
- 46. Save the Parameter as 3200pa
- 47. Job Stream Icon for Test Sequencing
- 48. Add the saved Parameter Files to Script Give it the name MSCR
- 49. Run the Test
- 50. Or, Save Script to Add on User Page
- 51. Add to User Page
- 52. Or, link to another test for automated testing
- 53. In Conclusion Expect to see the specification released in the next 12 months. For any questions, feel free to call or email me or the Malvern Help Desk for any assistance. In the USA +1 508-480-0200 x 350
- 54. Thank you for your interest & time! Contact information Presenter: John Casola (US based) (+1) 973-740-1543 [email_address] US Helpdesk: (+1) 508 480 0200 Thank you for joining us!!! An audio recording of this presentation will be available on the Malvern website soon. Check back with us regularly for future relevant seminars! www.malvernevents.com On-Demand Presentations