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MSCR RESULTS IN OKLAHOMA KENNETH RAY HOBSON, P.E AUGUST 25, 2011 SEAUPG WEBINAR.

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Presentation on theme: "MSCR RESULTS IN OKLAHOMA KENNETH RAY HOBSON, P.E AUGUST 25, 2011 SEAUPG WEBINAR."— Presentation transcript:

1 MSCR RESULTS IN OKLAHOMA KENNETH RAY HOBSON, P.E AUGUST 25, 2011 SEAUPG WEBINAR

2 SUMMARY 1.Data 2.Reporting / Rounding 3.Trends 4.Conclusions 5.Excel Macro Function 6.TA Instruments

3 DATA ER% = ASTM D 6084, 77 o F, RTFO Temp (C)PGSourceER %R100R3200R diffG*/sind RTFOJnr0.1Jnr3.2Jnr diffMSCR Grade A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A

4 DATA ER% = PG Min. 65, PG Min. 75 Temp (C)PGSourceER %R100R3200R diffG*/sind RTFOJnr0.1Jnr3.2Jnr diffMSCR Grade A PG S A PG S A PG S A PG H A PG S A PG V A PG E A PG E A PG E A PG E A PG E A A PG S A PG S A A PG H A

5 REPORTING / ROUNDING 1.Data in Excel File Reported, Not Rounded 2.Computations Used Full Values AASHTO TP 70-4, Percent Recovery Data in Red: Vs.

6 REPORTING / ROUNDING Percent Recovery Data in Red: PG Grade to nearest 0.1 o C? Shown as by TA Instruments, -2 in spreadsheet

7 REPORTING / ROUNDING

8 TRENDS Temp (C)PGSourceER %R100R3200R diffG*/sind RTFOJnr0.1Jnr3.2Jnr diffMSCR Grade A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E PG = PG E

9 TRENDS PG PG E Temp (C)PGSourceER %R100R3200R diffG*/sind RTFOJnr0.1Jnr3.2Jnr diffMSCR Grade A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG E A PG V A PG E

10 TRENDS PG PG S Temp (C)PGSourceER %R100R3200R diffG*/sind RTFOJnr0.1Jnr3.2Jnr diffMSCR Grade A A PG S A PG S A PG S A PG H A PG S A A PG S A PG S A A PG H A

11 TRENDS 1.Most PG 70-28s and All PG 76-28s Grade as PG E 2. J nr3.2 > 4.0 kPa -1 (4 of 12 PG 64-22) Not PG S 3.J nr3.2 < 0.0 kPa -1 (8 of 12 PG 76-28)

12 CONCLUSIONS 1.R 3.2 Limit Needed for: PG and PG (60 Min. and 80 Min.?) 2.Other PG Grade Data Needed for R 3.2 Limits 3.Do Not Round Computations Except for Limit Comparisons

13 EXCEL MACRO FUNCTION Function MSCRGrade(PG As String, TestTemp As Double, Jnr32 As Double, JnrDiff As Double) As String Dim iTestTemp As Double, iJnr32 As Double, iJnrDiff As Double Dim sColdTemp As String, suffix As String Application.Volatile iTestTemp = Round(TestTemp) sColdTemp = Split(PG, "-")(1) iJnr32 = WorksheetFunction.Round(Jnr32, 2) iJnrDiff = WorksheetFunction.Round(JnrDiff, 1) Select Case (True) Case iJnr32 < 0.5 And iJnrDiff <= 75: suffix = "E" Case iJnr32 <= 1 And iJnrDiff <= 75: suffix = "V" Case iJnr32 <= 2 And iJnrDiff <= 75: suffix = "H" Case iJnr32 <= 4 And iJnrDiff <= 75: suffix = "S" Case Else suffix = "NA" End Select If suffix = "NA" Then MSCRGrade = "" Else MSCRGrade = "PG " & iTestTemp & "-" & sColdTemp & " " & suffix End If End Function

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