Deep strength stabilized based is one of the pavement type listed in ATJ5/85 (2013). What does it mean by deep strength stabilized based? O Having stabilised base with Portland cement Having stabilised base using performance grade bitumen Having stabilised subbase using lime O Having stabilised based using binder only

Deep strength stabilized based is one of the pavement type listed in ATJ5/85 (2013). What does it mean by deep strength stabilized based? O Having stabilised base with Portland cement Having stabilised base using performance grade bitumen Having stabilised subbase using lime O Having stabilised based using binder only

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter20: Design Of Rigid Pavements

Section: Chapter Questions

Problem 5P

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Similar questions

How sensitive are the critical pavement responses to (a) increased tire pressure, (b) increased subgrade strength, (c) Poisson's ratio changes, (d) lime stabilization of top 6 in. of subgrade, (e) asphalt or cement stabilization of base layer, etc.?
Using 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 agg
Using 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 aggregateincrease, decrease or remain the same? Explain your answer.
As a materials engineer working for a highway department, what standard PG asphalt binder grade would you specify for each of the conditions show in the table. Seven-Day Мaximum Minimum Pavement Recommended PG Grade Pavement Temperature, °C Temperature, "C Case 50% 98% Mean, °C Std. Dev., "C Mean, "C Std. Dev., °C Reliability Reliability 39 1 -32 3.5 54 1.5 -17 2 69 2.5 1.
Mark the correct statement: a) The ISC steps are: Compaction, Expansion and Simple Axial Compression b) The MR Resilience Module measures the variation in stress with permanent deformation, there is no rupture in the test c) The MR Resilience Module can be performed in a triaxial cell and dynamic loading that best represents the pavement
A rigid pavement is designed with a 11-inch slab, an E_c of 6 million Ib/in^2, a concrete modulus of rupture of 432 Ib/in^2, a load transfer coefficient of 3.0, an initial PSI of 4.50, and a TSI of 2.5. The overall standard deviation is 0.56, the modulus of subgrade reaction is 190 Ib/in^3, and a reliability of 90% is used along with a drainage coefficient of 0.87. The pavement is designed assuming that traffic is composed entirely of trucks (50 per day). Each truck has one 20-kip single axle and one 42-kip tandem axle (the effect of all other vehicles is ignored). A section of this road is to be replaced (due to different subgrade characteristics) with a flexible pavement having a SN of 5 and is expected to last the same number of years as the rigid pavement. What is the assumed soil resilient modulus? (Assume that all other factors are the same as for the rigid pavement). Please report your answer as a decimal in units of Ib/in^2. For example, report 3000.6 Ib/in^2 as 3000.6.
Civil Engineering - Be able to explain rigid pavement responses Be able to explain critical rigid pavement responses Be able to determine key rigid pavement distresses Be able to explain fatigue cracking (Bottom-up) Bc able to explain fatiguc cracking (Top-down) - Be able to explain joint faulting (Doweled and undoweled) Be able to explain punch outs in (CRCP)
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.
Which Performance Grade asphalt binder would work best in resisting low temperature cracks and which would work best in preventing rutting? a) 58-22 b) 60-20 c) 80-35 d) 82-33
) Flexible pavements suffer from loss of flexibility with aging and become brittle. Explainhow this happens and how it could be treated.
One of the unbound pavement layer road base materials is “Dry-bound Macadam”. When is this material suitable for use? Describe its construction process.
The highest CBR number is required for A. Pavement B. O Subgrade C. O Subbase D. Base