Traffic And Highway Engineering
5th Edition
ISBN: 9781337631020
Author: Garber, Nicholas J.
Publisher: Cengage,
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 18, Problem 14P
To determine
An appropriate asphalt binder for a reliability of 98 percent.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
17. In the Asphalt Institute flexible pavement design approach, Where are the critical stress and strain locations checked?a. Top of the asphalt concrete layerb. Middle of the asphalt concrete layerc. Bottom of the asphalt concrete layerd. Bottom of the asphalt concrete layer and top of the subgrade
Design a pavement for a rural interstate highway. The expected design ESAL is 13x106. The pavement structure is to consist of asphalt concrete with an elastic modulus of 400000psi, a granular base with an elastic
modulus of 26000psi, and a granular subbase with an elastic modulus of 12000psi. The elastic modulus of the subgrade is 8000psi. It is estimated that it will take a week for water to drain from the pavement and that
the pavement will be saturated about 15% of the time. Assume that a reliability level o
about 90% is required and that the initial serviceability index is 4.2 and the final serviceability index is 2.5.
Subject: Transportation Engineering
An asphalt pavement carries a static wheel load of 125 kN. The circular contact radius of the tire is 180 mm and the transmitted load is distributed across a wide area of subgrade at an angle of 47°. The subgrade bearing value is 0.30 MPa while that of the base is 0.60 MPa. Design the thickness of the pavement and that of the base ?
Please give me right solution.. urgenttttttttt help me
Thank you
Chapter 18 Solutions
Traffic And Highway Engineering
Ch. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - Prob. 4PCh. 18 - Given the specifications for an asphaltic concrete...Ch. 18 - Given the particle size distributions of two...Ch. 18 - Given the particle size distributions of two...Ch. 18 - Given four different types of aggregates to be...Ch. 18 - Prob. 9PCh. 18 - Prob. 10P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- Problem No. 1A flexible pavement for an urban interstate highway is to be designed using the AASHTO method to carry a design ESAL of 3 x 106. It is estimated that it takes about a week for water to be drained from within the pavement and the pavement structure will be exposed to moisture levels approaching saturation for 30% of the time. The following additional information is available: Elastic modulus of asphalt concrete = 450,000 psiResilient modulus of base material = 35,000 psiResilient modulus of subbase material = 15,000 psiCBR of subgrade material = 8arrow_forwardAs shown in the figure below, a flexible pavement is consisted of 40 mm dense graded asphalt and 375 mm high standard unbound granular material. Use the Austroads method to characterize the vertical and horizontal modulus of the unbound granular material. Asphalt, Ev=4000 MPa Unbound granular meterial Subgrade, CBR = 5 ttach File Browse Local Files Browse Content Collection 40 mm 375 mmarrow_forwardThe elastic modulus of mid-range aggregate asphalt pavement is 480 MPa while its subgrade has an elastic modulus of 55 MPa. What is the stiffness factor of the flexible pavement? 0.12 0.61 0.34 0.49arrow_forward
- Q1A In a Marshall test, the percentage of asphalt binder by total weight of aggregate is 5.3%. The bulk specifc gravity of aggregate (G)-2.582, the specifc gravity of asphalt binder (G)=1.000, and the density of water 3 (Yw)=1.000 g/cm. If the voids flled with asphalt (VFA) is 70.0% and the effective asphalt binder (Pbe) is 4.0% by total weight of mixture, determine the following properties: a. The absorbed asphalt binder (Pba) b. The bulk specifc gravity of the compacted mixture (Gmb) c. The voids in mineral aggregate (VMA) d. The voids in total mixture (VTM) e. The theoretical maximum specifc gravity of the loose mixture (Gmm) The effective specifc gravity of the aggregate (Gse) الarrow_forwardDiscuss the following terms briefly: Emulsion breaking and Cutback curing, Water bound and aggregate base, Flexible pavement and Rigid pavements Cross slope and side slope of road,arrow_forwardWhat standard PG asphalt binder grade should be selected under the following conditions: The seven-day maximum pavement temperature has a mean of 57°C and a standard deviation of 2°C. The minimum pavement temperature has a mean of -6°C and a standard deviation of 3°C. Reliability is 98%.arrow_forward
- 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 Maximum Pavement Temperature Minimum Pavement Recommended Temperature PG Grade Standard 98% Mean, °C Deviation, °C Reliability Reliability Standard 50% Case Mean, °C Deviation, °C 1 43 1.5 -29 2.5 2 51 -18 4 62 2.5 10arrow_forwardA pavement consists of 5 inches of asphalt underlain by a crushed stone based course. There is no sub base. The asphalt has an elastic modulus of 350,000 psi at room temperature and the base course has a CBR of 70. Determine the thickness of the crushed stone base needed to reach an SN of 2.85. Assume the base course is saturated 5% of the time and drains within a day.arrow_forwardIdentify the following statement whether it is (True) or (False). If your answer is false, give the correct answer? 1- Tie bars are generally provided across transverse joints of rigid pavement. 2- The segregation of asphalt and aggregates which takes place in the presence of moisture is called rutting. 3- The softest grade of asphalt binder which is used for cold areas is 40-50 grade. 4- There must be sufficient air voids in compacted bitumen.arrow_forward
- Give me right solution... Urgent please A 5 tonne wheel load is applied on a pavement and generates a surface deflection of 0.15 mm. A. If the pavement is 125 mm thick, what is the vertical stress at the top of the subgrade? B. If the equivalent radius of tyre contact is 100 mm and Poisson’s ratio is 0.3, what is the pavement’s modulus of elasticityarrow_forwardThe Roman design for their primary U.K. roads generally consisted of layers. 2 3 5 It appears that the first tar macadam pavement was placed in UK France USA Russia coat is to bind the granular base to the asphalt layer. seal prime tack all of the above Normally, a flexible pavement contains: surface layer+base layer surface layer+subgrade layer surface layer+base layer+subgrade layer base layer+subgrade layer The joint spacings of the jointed plain concrete pavement are between O no joint is needed in the JPCP. 300-700 ft 30-100 ft 15-30 ftarrow_forwardAs 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 P9.15 (show all calculations and fill in the table)? TABLE P9.15 Seven-Day Maximum Pavement Temperature Minimum Pavement Recommended Temperature PG Grade Standard Standard 50% 98% Case Mean, °C Deviation, °C Mean, °C Deviation, °C Reliability Reliability 1 39 -32 3.5 54 1.5 -17 2 3 69 2.5arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning