In a Marshall sample, the bulk specific gravity of mix and aggregates are 2.324 and 2.546 respectively. The sample includes 5% of bitumen (by total weight of mix) of specific gravity 1.10. The theoretical maximum specific gravity of mix is 2.441. The void filled with bitumen (VFB) in the Marshall sample (in%) is __________

In a Marshall sample, the bulk specific gravity of mix and aggregates

1.	In a Marshall sample, the bulk specific gravity of mix and aggregates are 2.324 and 2.546 respectively. The sample includes 5% of bitumen (by total weight of mix) of specific gravity 1.10. The theoretical maximum specific gravity of mix is 2.441. The void filled with bitumen (VFB) in the Marshall sample (in%) is __________
A.	68%
B.	67.7%
C.	68.7%
D.	67%
Answer» C. 68.7%

Discussion

No Comment Found

Related MCQs

A pavement designer has arrived at a design traffic of 100 million standard axles for a newly developing national highway as per IRC:37 guidelines using the following data: Design life = 15 years Commercial vehicle count before pavement construction = 4500 vehicles/day Annual traffic growth rate = 8%. The vehicle damage factor used in the calculation was
The probability that k number of vehicles arrive (i.e. cross a predefined line) in time t is given as ( t)ke- t/k! where is the average vehicle arrival rate. What is the probability that the time headway is greater than or equal to time t1 ?
The width of the expansion joint is 20 mm in a cement concrete pavement. The laying temperature is 20 C and the maximum slab temperature in summer is 60 C. The coefficient of thermal expansion of concrete is 10 10 6 mm/mm/ C and the joint filler compresses up to 50% of the thickness. The spacing between expansion joints should be
The following observations were made of an axle-load survey on a road Axle Load (kN)Repetitions per day35-4580075-85400 The standard axle-load is 80 kN. Equivalent daily number of repetitions for the standard axle-load are
For a 25 cm thick cement concrete pavement, analysis of stresses gives the following values Wheel load stress due to corner loading 30 kg/cm Wheel load stress due to edge loading 32 kg/cm Warping stress at corner region during summer 9 kg/cm Warping stress at corner region during winter 7 kg/cm Warping stress at edge region durng summer 8 kg/cm Warping stress at edge region during winter 6 kg/cm Frictional stress during winter 5 kg/cm Frictional stress during winter 4 kg/cm The most critical stress value for this pavement is
The data given below pertain to the design of a flexible pavement. Initial trafic = 1213 cvpd Traffic growth rate = 8 percent per annum Design life = 12 years Vehicle damage factor = 2.5 Distribution factor = 1.0 The design traffic in terms of million standard axles (msa) to be catered would be
Bilumen is derived from
In a concrete pavement A. temperature stress is tensile at bottom during day time B. load stress is compresive at bottom
Temperature stresses in concrete pavements may cause the slab to crack. If a slab cools uniformly then the crack will develop at the following locations of the slab
Column I below gives a list of physical properties of aggregates which should be determined to judge their suitability in road construction. Column II gives a list of laboratory tests which are conduced to determine these properties. Column I Column II P. Hardness 1. Water adsorption Q. Porosity 2. Impact test R. Toughness 3. Soundness test S. Durability 4. Abrasion test Which of the following matches is correct ?

Discussion

No Comment Found

Related MCQs

Reply to Comment