Q=Discuss various tests used for the quality of aggregate used in flexible pavements. Answer in word format
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Q: Discuss various tests used for the quality of bitumen used in flexible pavements
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Q: = A) Discuss various tests used for the quality of bitumen used in flexible pavements.
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Q: Question 1:Discuss various tests used for the quality of aggregate used in flexible pavements.
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Q=Discuss various tests used for the quality of aggregate used in flexible pavements.
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- Discuss various tests used for the quality of aggregate used in flexible pavements.Q= A) Discuss various tests used for the quality of bitumen used in flexible pavements. B)Discuss various tests used for the quality of aggregate used in flexible pavements. Answer in word formatQ=What is the primary function of the pavement structure? Why do we use high quality materials as we go from bottom to top of the pavement structure? Answer in word format
- Questions 1. Estimate and give examples of calculation for building work of measurements unit in square meter (m²) and cubic meter (m³). 2. Describe in sequences the item, description, unit, quantity, rate and amount of pavement layer construction in Bill of Quantity template.Q, Discuss the following terms briefly: a, Emulsion breaking and Cutback curing, b, Water bound and aggregate base, c, Flexible pavement and Rigid pavements,9.14 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 Table P9.14 (show all calculations and fill in the table)? Table P9.14 Seven-Day Pavement Maximum 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 43 1.5 - 29 2.5 2 51 -18 4 3 62 2.5 10 2
- Given the specifications for an asphaltic concrete mixture and the results of a sieve analysis, determine the proportion of different aggregates to obtain the required gradation. Coarse aggregates: 60% Fine aggregates: 35% Filler: 5%Using the following data for an unreinforced PCC Pavement slab: ▪ Design Strength f`c = 4000 psi ▪ Slab thickness = 12” ▪ Standard deviation of f`c obtained from 20 samples = 200 psi ▪ Ignore any exposure requirement ▪ Use air entrained concrete ▪ Fineness Modulus of Fine Aggregates = 2.60 ▪ Maximum aggregate Size = 2” and nominal maximum aggregate size 1 ½ “ ▪ Bulk oven-dry specific gravity of Coarse Aggregate = 2.60 ▪ Oven-dry rodded density of coarse aggregate = 125 pcf Find the following: a) Required compressive strength b) Water-Cement Ratio c) Coarse aggregate amount (lb/yd3 ) d) If the w/c ratio is 10% reduced, will the quantity of coarse aggregate increase, decrease or remain the same? Explain your answer.Using the following data for an unreinforced PCC Pavement slab:■ Design strength f′c = 4,000 psi■ Slab thickness = 12′′■ Standard deviation of f′c obtained from 20 samples = 200 psi■ Ignore any exposure requirement■ Use air-entrained concrete■ Fineness modulus of fine aggregate = 2.60■ Maximum aggregate size = 2′′ and nominal maximum aggregatesize = 11 2′′■ Bulk oven-dry specific gravity of coarse aggregate = 2.6■ Oven-dry rodded density of coarse aggregate = 125 pcfFind the following:a. Required compressive strengthb. w/c ratioc. Coarse aggregate amount (lb/yd3)d. If the w/c ratio is 10% reduced, will the quantity of coarse aggregate increase, decrease or remain the same? Explain your answer.
- The following figure shows concrete pavement with the layer thickness and elastic modulus as indicated. Assume modulus of rupture of 650 psi, load transfer coefficient of 3.2, serviceability loss from 4.5 to 2.5, and drainage coefficient of 0.9. The bedrock depth and loss of support is not considered for the subgrade. Use the design equation or monograph with 50% reliability to solve the following: 1) Determine the number of ESAL that the pavement can carry before failure. 2) If the daily traffic has 1080 single axles (20-kip), 400 single axles (24-kip), and 680 tandem axles (40-kip), and the annul traffic is the same over the design period, how many years would the concrete pavement last before failure? 8-inch Portland Cement Concrete Ec=4×106 psi 8-inch Granular Subbase Ec=30,000 psi Subgrade Mr = 5000 psiUsing the following data for an unreinforced PCC Pavement slab:■ Design strength f′c = 28 MPa■ Slab thickness = 300 mm■ Standard deviation of f′c obtained from 20 samples = 1.4 MPa■ Ignore any exposure requirement■ Use air-entrained concrete■ Fineness modulus of fine aggregate = 2.60■ Maximum aggregate size = 50 mm and nominal maximum aggregatesize = 37.5 mm■ Bulk oven-dry specific gravity of coarse aggregate = 2.6■ Oven-dry rodded density of coarse aggregate = 2002 kg/m3Find the following:a. Required compressive strengthb. w/c ratioc. Coarse aggregate amount (kg/m3)d. If the w/c ratio is 10% reduced, will the quantity of coarse aggsolve for the average penetration below and after please answer. What is the relation between depth of penetration and strength of asphalt?