Q, Discuss the following terms briefly: a, Emulsion breaking and Cutback curing, b, Water bound and aggregate base, c, Flexible pavement and Rigid pavements,
Q: A flexible pavement with an allowable subgrade pressure of 0.14MPa and the max. tire pressure equal…
A: Given Data:Wheel load = 52kNsubgrade pressure = 0.14MpaTire pressure = 0.52Mpa
Q: As a materials engineer working for a highway department, what standard PG asphalt binder grade…
A: Case 1: Determine the high temperature grade of the pavement which satisfies the condition High…
Q: Give a summary of rigid pavement design procedure by AASHTO method (1993), and describe the…
A: 1. Summary of Rigid Pavement Design Method: Design procedure of a rigid pavement as per AASHTO…
Q: Emulsion breaking and Cutback curing, Water bound and aggregate base, Flexible pavement and Rigid…
A: Dear student here i am answering accordingly to our company guidelines , so here i can answer only…
Q: Flexible pavements suffer from loss of flexibility with aging and become brittle. Explain how this…
A: One of the prime cause of flexible pavement failure on aging is excessive deformation in subgrade…
Q: 2. Draw typical pavement deterioration curves for two types of pavements (A and B). Pavements A and…
A: Given:- The lifespan of the pavement A = 20 years The lifespan of the pavement B = 40 years The cost…
Q: Describe these five (5) types of pavement deformations (A-E) and then discuss the causes and propose…
A: A) Potholes Reason: Potholes is developed in the pavement due to the usage of poor quality material…
Q: A rigid pavement has a wheel load capacity of 53.95 kN. The allowable tensile stress of concrete is…
A:
Q: What are various failures in Flexible Pavement’s, explain with the help of diagrams?
A:
Q: QS: Select the correct answer for the following multiple-choice questions: 1. In circular loading on…
A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at a…
Q: Define pavement management system (PMS) and describe its benefits
A: Pavement management system is a system analysis of pavement is done in such a way that which method…
Q: Pavement Condition Index (PCI) Survey is developed by US Army Corps of Engineers to quantify the…
A: The Pavement Condition Index is a numerical indicator that rates the general surface condition of a…
Q: Q9. The preventive rehabilitation technique is that which involves: a) surface applications of…
A:
Q: Q2: Select one for each of the following: 1. Tire pressure affects the: a) pavement thickness b)…
A: 1. Answer:- quality of surface course (option b) Explaination:- Tire pressure affects the quality…
Q: Civil Engineering - Be able to explain rigid pavement responses Be able to explain critical rigid…
A: Concrete is an adaptable development material, which is gotten by solidifying a combination of…
Q: Discuss various Design, Construction, and Supervision factors causing pavement failures?
A: Construction of subgrade First spreading of soil is done Additional water is sprayed to obtain…
Q: If the pavement structure number (SN) is equal to 1 and the terminal serviceability index (TSI) is…
A: Given: Structure Number is 1. The terminal serviceability index is 2.5. The tandem axle load is…
Q: Discuss various tests used for the quality of bitumen used in flexible pavements Subject.…
A: Bitumen is a petroleum product obtained by distillation
Q: Pavement design has evolved tremendously in the past few decades. The approach in designing…
A: Solution: Evolution in Pavement Design methods form Empirical to Mechanistic-Empirical: The pavement…
Q: Q5: Select the correct answer for the following multiple-choice questions: 1. In circular loading on…
A: Thank you for the question . As per honour code we will answer the first question since the exact…
Q: Based on the information given, design a pavement for a 2-lane rural road in a flat setting. (a)…
A: Given Data Deign period (n) = 10 years commercial traffic volume (N)< 100 CV/day Traffic volume…
Q: Discuss the following terms briefly: Emulsion breaking and Cutback curing, Water bound and…
A: Pavements: The pavement is a hard surface over the earth strata, to use easy movable for the…
Q: Draw a Schematic diagram of the road cross section showing various structural elements/layers.…
A: Surface course Surface course is the layer directly in contact with traffic loads and generally…
Q: Name three methods of asphalt pavement recycling.
A: There is a strong history of recycling pavement content. Even then, just after the oil embargo…
Q: Discuss cross section of road in rural, urban and hilly area with neat sketches in details. What is…
A: Cross section don't change max in urban or Hilly areas. Only road margin or road boundaries may not…
Q: What is the importance of aborption of aggregate to asphalt concrete? Answer in 3-5 sentences.
A: The importance of absorption of aggregate to asphalt concrete: The most important aggregate…
Q: Pavement Condition Index (PCI) Survey is developed by US Army Corps of Engineers to quantify the…
A: PCI is a numerical index that is used to indicate general condition of a pavement section. It…
Q: which type of asphalt pavement deterioration represented in the picture below?
A: Given the picture of a type of pavement deterioration, To find We are asked to find the type of…
Q: Questions 1. Estimate and give examples of calculation for building work of measurements unit in…
A: Estimating and Costing are intently exactly the same things. The gauge is characterized as the most…
Q: Discuss various tests used for the quality of bitumen used in flexible pavements
A: Bitumen is a complex material with a complex response to stress. All bitumens show viscoelastic…
Q: Discuss cross section of road in rural, urban and hilly area with neat sketches in details. What is…
A: A typical cross section of rural road is shown below: Rural road carry very less traffic so they…
Q: Question 2 It is desired to design pavement layers of a 6. lanes principal arterial in a rural area…
A: Given data:- Thickness of HMA surface, D1 = 8 in Principle arterial in a rural area, R = 90% Design…
Q: Mechanistic design procedure is based on the assumption that a pavement can be modelled as…
A: Solution Pavements can be designed as Flexible and rigid. In the analysis of Flexible pavements,…
Q: Explain the difference of routine, periodic, and special maintenance.
A: We are authorized to answer one question at a time since you have not mentioned which question you…
Q: which type of asphalt pavement deterioration represented in the picture below? *
A: Bleeding is the defect in flexible pavements which occur due to excess use of asphalt or bitumen.In…
Q: Truck A has two single axles. One axle weighs 12,000 Ib and the other weighs 23,000 lb. Truck B has…
A: NOTE : Since you have asked multiple questions, we will solve the first question for you. If you…
Q: Q#4: Discuss the following terms briefly: Emulsion breaking and Cutback curing, Water bound and…
A: Emulsion breaking and Cutback curing 1.Emulsion breaking is the phenomenon of the break down of…
Q: A dual wheel having a load per tire of 4000 Ib, 80 psi pressure and μ = 0.5. Calculate the total…
A: Solution: Given: Wheel load, P = 4000 lb Tyre pressure, p = 80 psi μ=0.5 r = 0, 7, 14 E1 = 10 E2…
Q: Q#3. Discuss root causes and remedial measures of the following distresses occurring in flexible…
A: Root causes and remedial measures of the following distresses occurring in flexible pavements are…
Q: Discuss root causes and remedial measures of the following distresses occurring in flexible…
A: Slippage Failure: Half or crescent moon shaped cracks or deformations in the surface layer of the…
Q: What is Falling Weight Deflectometer? How it can be used to determine potential of voids in rigid…
A: It is a testing device which is to used estimate the physical properties of civil structures such as…
Q: Enumerate the desirable and define the desirable properties of sand and aggregate as pavement…
A: Desirable properties are pavement materials are Strength Hardness Toughness Shape of Aggregates…
Q: Question 1:Discuss various tests used for the quality of aggregate used in flexible pavements.
A: Flexible Pavement; Flexible pavement is those which are surfaced with bituminous material and can be…
Q: A rigid pavement has a wheel load capacity of 53.96 kN. The allowable tensile stress of concrete is…
A: Thickness of pavement is :t=3W4f at centert=3W2f at edge
Q: Q3 (a) Pavement Condition Index (PCI) Survey is developed by US Army Corps of Engineers to quantify…
A: PCI is a numerical index that is used to indicate general condition of a pavement section. It…
Q: 250 cu.m-Column, 185 cu.m-concrete pavement, how many samples? And what type of sample? 2. 750…
A: 1. 7samples of column and 6 samples of concrete pavement
Q: What is Strategic Highway Research Program? What are the main causes of asphalt aging?
A: Strategic Highway Research Program : It made simple classification of cases for Adhesion of ice…
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- Discuss various tests used for the quality of aggregate used in flexible pavements.Discuss 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,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
- 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 aggUsing 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.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.
- 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 psiWhat standard PG asphalt binder grade should be selected under the following conditions:a. The seven-day maximum pavement temperature has a mean of 62°C and a minimum pavement temperature of -15°C. (table9.2) b. According to part a, what is your recommendation for 20 million ESALs and 50 km/h speed? (table ESALs) c. For 50 million ESALs and 80 km/h speed. (table ESALs)Discuss the following terms briefly: I. Emulsion breaking and Cutback curing, III. Flexible pavement and Rigid pavements, VII. Breast wall and retaining wall.
- 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 1.3. a) What is meant by dowel bar? Why it is used in the rigid pavement? b) Design the Dowel Bars for the following parameters: i) Design wheel load = 5100 kg ii) Design load transfer 40% iii) Slab thickness 30 cm iv) Joint width = 2.0 cm v) Modulus of dowel support = 42000 kg/em3 vi) Modulus of elasticity of dowel bar = 2x106 kg/cm2 vii) Modulus of subgrade reaction = 8 %3D viii) Grade of concrete = M 50Using 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.