What does a 80 100 grade bitumen indicate?
Bitumen of grade 80/100 means that in the bitumen penetration test, when the needle sinks 8 to 10 mm in the bitumen, we find out that the penetration value is between 8 and 10 mm and this type of bitumen is 80/100 bitumen.
What does 80 100 pen asphalt cement mean?
Bitumen Penetration Grade 80/100 is a standard penetration grade Bitumen usually used as a Paving Grade Bitumen suitable for road construction and for the production of asphalt pavements with superior properties. This grade of Bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses.
What do you mean by grade of bitumen?
It measures the distance a standard blunt pointed needle will vertically penetrate a sample of material at 25°C, the load being 100 gram and time of application of load being 5 seconds. The unit of penetration is 1/10 mm. Thus 80/10 grade bitumen means 8 – 10 mm penetration.
How is bitumen grade calculated?
The penetration is measured in mm and it indicates the relative hardness of the bitumen. Higher the penetration, softer is the bitumen. A penetration of 0.6 to 0.7 mm indicates 60/70 penetration grade bitumen.
What is 80 100 as a grade?
B- grade
The percentage score for 80 out of 100 is 80.00%. This is an B- grade.
What is VG in bitumen?
VG Bitumen is usually used in the production of hot mix asphalt. Viscosity Grade Bitumen is petroleum grade bitumen, which produced from fractional vacuum bottom which comes from distillation of crude oil, which feasible appliance and behavior changes according to its temperature.
How is bitumen measured?
Bitumen Tests- Penetration Test It measures the hardness or softness of bitumen by measuring the depth in tenths of a millimeter to which a standard loaded needle will penetrate vertically in 5 seconds. BIS had standardised the equipment and test procedure.
What is a 80 out of 100 grade?
What is an 80 grade?
GRADE POINT VALUES GRADE POINT VALUES A = 100 – 90 4 A = 100 – 93 4.00 B = 89 – 80 3 A- = 92 – 90 3.66 C = 79 -70 2 B+ = 89 – Page 1.
Is 80 a good grade?
A – is the highest grade you can receive on an assignment, and it’s between 90% and 100% B – is still a pretty good grade! This is an above-average score, between 80% and 89% C – this is a grade that rests right in the middle.
How is bitumen content calculated?
The bulk relative density of the material is divided by the MTD of the material from which the VIM is calculated : VIM = (1 – BRD/MTD)x100. The aggregate component of the sample from which the bitumen was extracted during the bitumen content determination is used for the particle size analysis.
What is viscosity of bitumen?
Viscosity grades Bitumen are categorized according to Viscosity (degree of fluidity) grading. The higher the grade, the stiffer the Bitumen. In Viscosity Grade, Viscosity tests are conducted at 60°C and 135°C, which represents the temperature of road surface during summer and mixing temperature respectively.
What is 80% as a grade?
B-
Percent | Letter Grade |
---|---|
83 – 86 | B |
80 – 82 | B- |
77 – 79 | C+ |
73 – 76 | C |
What is 80 100 as a percentage?
Since “per cent” means parts per hundred, if we can convert the fraction to have 100 as the denominator, we then know that the top number, the numerator, is the percentage. Our percent fraction is 80/100, which means that 80100 as a percentage is 80%.
What is the passing grade of 100?
A “B” or higher is typically considered a “good” grade. A D is the lowest passing grade, but it may not fulfill requirements for further courses or college applications. An “A” is 90% to 100%. A grade of 100% is an “A+”.