As a materials engineer working for a highway department, what standard PG asphalt binder grade would you specify for each of the conditions shown in the table below. Show all calculations. Seven-Day MaximumPavementMinimum PavementTemperature, °c Temperature, °CRecommended PG Grade50%98%Case Mean, °CStd. Dev., °CMean, °C Std. Dev., °C ReliabilityReliability1391-323.5541.5-172369252.5

Condition that high/low temperature grade of pavement should satisfy: High temp. Grade ≥ mean…

Seven-Day Maximum Pavement Minimum Pavement Temperature, °C Temperature, °C Recommended PG Grade 50% 98% Case Mean, °C Std. Dev., °C Mean, °C Std. Dev., °C Reliability Reliability 1 39 1 -32 3.5 54 1.5 -17 3 69 5 2.5 2. 2.

Seven-Day Maximum Pavement Minimum Pavement Temperature, °C Temperature, °C Recommended PG Grade 50% 98% Case Mean, °C Std. Dev., °C Mean, °C Std. Dev., °C Reliability Reliability 1 39 1 -32 3.5 54 1.5 -17 3 69 5 2.5 2. 2.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Bituminous Materials

The word 'bituminous' in Bituminous materials come from the word bitumen, which is popularly known as 'asphalt' in the United States. Asphalt is a heavier substance that is obtained by the fractional distillation of crude oil, after removing the lighter components such as gasoline and diesel. Asphalts are known to have good adhesive and waterproofing properties. Depending upon the grade needed, asphalt may be refined several times in the fractional distillation column.

Question

As a materials engineer working for a highway department, what standard PG asphalt binder grade would you specify for each of the conditions shown in the table below. Show all calculations.

Seven-Day Maximum
Pavement
Minimum Pavement
Temperature, °c Temperature, °C
Recommended PG Grade
50%
98%
Case Mean, °C
Std. Dev., °C
Mean, °C Std. Dev., °C Reliability
Reliability
1
39
1
-32
3.5
54
1.5
-17
2
3
69
2
5
2.5

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