Construction of rigid pavements quality control in pavement construction comparative study of rigid versus flexible pavements modern materials in pavements. Section 5 rigid pavement construction standard specification for urban infrastructure works 55 edition 1, revision 0 september 2002 testing a testing authority shall be employed by the contractor to carry out all testing. It is not intended as definitive treatise, and it does not encompass the design of flexible pavements. A 2 ft gap is left between the end of the pavement and the beginning of the approach slab. Thus he introduced an economical method of road construction. Maintenance and rehabilitation is to be properly done to prevent the distresses in rigid pavement. Section 5 rigid pavement construction standard specification for urban infrastructure works 51 edition 1, revision 0 september 2002 contents 5 rigid pavement construction 53 5. Rapid pavement construction tools, materials and methods. For critical design, a combination of load stress, frictional stress and warping stress is considered. Rigid pavement design of pavements lec14 part1 youtube. Download pdf of pavement design note civil engineering offline reading, offline notes, free download in app, engineering class handwritten notes, exam notes, previous year questions, pdf free download.
Alpha factor determination from the national airport. Rigid pavement empirical design example pavement interactive. Design flexible and rigid pavements 9design principlespavement components and their roledesign practice for flexible and rigid pavements, ircmethods only. Pavements 12 lectures cement as a pavement material analysis and design of rigid pavements design of runways, taxiways, apron, etc. Rigid pavement free download as powerpoint presentation. Guidelines for the design and construction of rigid pavements highway and transportation engineering, s k khanna and ceg justo 29. Engineers are cautioned that much of pavement design is governed by codes, specifications and practices of public agencies. A project report on design of a flexible pavement for an existing colony. Rigid pavements have sufficient flexural strength to transmit the wheel load stresses to a wider area below. A comparative study on rigid and flexible pavement. Jun 09, 2017 if you found this video helpful then please hit that like button.
Due to this property of pavement, when the subgrade deflects beneath the rigid pavement, the concrete slab is able to bridge over the localized failures and areas of inadequate support from subgrade because of. As a general guide, factors elaborated in section 3. Pavements and surface materials page 2 slabs and paver stone embedded in reinforced concrete are examples of rigid pavement. Concrete pavement construction basics placing dowel baskets dowel bars transfer heavy loads across joints in the pavement, preventing faulting at the joint that can lead to pavement damage. Nov 05, 2016 rigid pavementrigid pavement 21 rigid pavements, though costly in initial investment, are cheap in long run because of low maintenance costs, the cost of construction of single lane rigid pavement varies from 35 to 50 lakhs per km in plain area, rigid pavement have deformation in the sub grade is not transferred to subsequent layers.
Different pavement types use different types of joints and reinforcement to control the forces acting on the concrete pavement. This is an introduction to flexible pavement design for engineers. Compared to flexible pavement, rigid pavements are placed either directly on the prepared subgrade or on a single layer of granular or stabilized. Adequate coefficient of friction to prevent skidding of vehicles, impervious surface, so that subgrade soil is well protected, and long design life with low maintenance cost. Introduction to rigid pavement design ced engineering. It is not intended as definitive treatise, and it does not encompass the design of rigid pavements. Compared to flexible pavement, rigid pavements are placed either directly on the prepared subgrade or on a single layer of granular or stabilized material.
Introduction to pavement design nptel may 3, 2007 granular structure wheel load p figure 19. The rigid pavements are made of portland cement concrete either plain, reinforced or prestressed concrete. An ideal pavement should meet the following requirements. On the contrary, in rigid pavements, wheel loads are transferred to subgrade soil by flexural strength of the pavement and the pavement acts like a rigid plate e. This is an introduction to rigid pavement design for engineers. Numerous other manuals and publications already exist that provide information that is much more detailed. Compared to flexible pavement, rigid pavements are placed either directly on the prepared subgrade or on a single layer of g ranular or stabilized. Types of failures in rigid pavements causes and repair. The design of rigid pavement is based on providing a structural cement concrete slab of sufficient strength to resists the loads from traffic. Chapter 8 pavement joints limited revisions revision 1. Analysis and design of rigid pavements design of runways, taxiways, apron, etc. Sp 62 2004, guidelines for design of cc roads for rural roads. Types of pavements flexible pavement rigid pavement. Rigid pavement is designed and analyzed by using the elastic theory.
Pdf the last century has seen an intensive process of urbanization in rural as well as metro cities. Lecture note course code bce 305 veer surendra sai. Lecture 38 concrete pavement design indian congress method. Engineers must always determine the requirements of the. A typical cross section of the rigid pavement is shown in figure 3. Different types of joints are required like expansion and contraction.
The rigid pavements are made of cement concrete either plan, reinforced or prestressed concrete. Paul guyer is a registered civil engineer, mechanical engineer, fire protection engineer, and architect with over 35 years experience in the design of buildings and related. Pdf a comparative study on rigid and flexible pavement. Then, in 1993, the guide was updated to incorporate. In 1986, the american association of state highway and transportation officials aashto published a comprehensive revision under the title 1986 aashto guide for the design of pavement structures. Ppt pavement design civil engineering ce notes edurev. Rdgn042 pavement design for carriageway construction page 7 of 42 pavement type for different sections andor different lanes on the same road. Properties of rigid pavements components of rigid pavements created by aman dembla help the. View and download powerpoint presentations on rigid pavement ppt. In the design of a rigid pavement, the flexural strength of concrete is the major factor and not the strength of subgrade. Difference between flexible and rigid pavements is based on the manner in which the loads are distributed to the subgrade. Introduction to flexible pavement design ced engineering. Pdf a project report on design of a flexible pavement for. Sudhakar reddy, department of civil engineering, iit kharagpur.
Rigid pavements have su fficient flexural strength to transmit the wheel load stresses to a wider area below. Civil engineering transportation engineering i nptel. Figure 30 is a nomograph that determines the effective modulus of subgrade reaction. A rigid pavement is constructed from cement concrete or reinforced concrete slabs. A typical cross section of the rigid pavement is shown in figure 19. This document is highly rated by civil engineering ce students and has been viewed 362 times. Chapter 4 repair and maintenance of rigid pavenments 4. Department of transportation wsdot desires to improve their knowledge, awareness and retention of rapid pavement construction tools, materials and methods. Overview as the name implies, rigid pavements are rigid i. In this case, the load carrying capacity is mainly due to the rigidity ad high modulus of. Lecture note course code bce 305 transportation engineeringi under revision syllabus. The elastic modulus based on the recoverable strain under repeated loads is called the resilient modulus m r, defined as m r. The asphalt institute in college park, maryland has issued a asphalt thickness and design, manual that suggests that asphalt.
References nptel web courses, transportation, modules irc sp 062. Cut across the e sb cut across m r to the tl vertically meet other line read kvalue k600pci topic 10 aashto rigid pavement design figure 12. Learn for free, pay a small fee for exam and get a certificate. This project discusses the implementation, use and experience of using the following items related to rapid pavement construction. Lecture 36 flexible pavement design indian roads congress. Dc to richmond road in 1919 from the asphalt institute. The ends of the pavement and the approach slab are placed on a sleeper slab that has been previously poured. This lecture includes following topics types of pavements. Design of rigid and flexible pavements by various methods. Pavement design note pdf download lecturenotes for free. Rigid pavements rigid pavements have sufficient flexural strength to transmit the wheel load stresses to a wider area below.
Nptel, online courses and certification, learn for free. Concrete pavement design, construction, and performance. Construction of rigid pavements quality control in pavement construction. Lectures of highway engineering forth stage nov2009 09. This lecture includes following topics design of rigid pavements what are rigid pavements. Flexible pavement are preferred over cement concrete roads as they have a great advantage that these can be strengthened. Grouted concrete roads are in the category of semi rigid pavements. Scribd is the worlds largest social reading and publishing site.
Jun 04, 2016 conclusion rigid pavement distress is a serious issue all over the world, the distresses causes some serious problems at wide range. Common characteristics of good and poorly performing pcc pavements khazanovich et al. Types of pavement flexible pavements and rigid pavements. Apr 08, 2020 ppt pavement design civil engineering ce notes edurev is made by best teachers of civil engineering ce. The plain cement concrete slabs are expected to take up about 45kgcm2 flexural stress. Westergaard is considered the pioneer in providing the rational treatment of the rigid pavement analysis.
A newly constructed cc pavement stretch shall be opened to traffic only after a minimum curing of 28 days. Before we differentiate between flexible pavements and rigid pavements, it is better to first know about them. Example spring 2007 cee 320 pavement purpose load support smoothness drainage spring 2007. The purpose of this appendix is only to provide a brief presentation. Nov 17, 2008 lecture series on introduction to transportation engineering by prof. Use the 1993 aashto empirical equation using the previously calculated esal results and the 1993 aashto empirical rigid pavement design equation the following pavement thickness designs can be calculated. This pressure deformation characteristics of rigid pavement lead westergaard to the define the term radius of relative stiffness in cm is given by the equation. Sudhakar reddy, department of civil engineering, iit kharag. In this case, the load carrying capacity is mainly due to the rigidity ad high modulus of elasticity of the slab slab action. Thickness design on flexible pavement aashto 1993 method. Pavement designuse of cbr method for design of flexible pavement, irc recommendation for design of rigid pavement. The asphalt institute in college park, maryland has issued a asphalt thickness and design, manual that suggests that asphalt thickness for roads be based on the following three factors. Lecture series on introduction to transportation engineering by prof.
Nptel syllabus transportation engineering ii video course introduction to transportation engineering 4 lectures. Mix design methods for asphalt concrete and other hotmix types. This page contains pavement design seminar and ppt with pdf report. Subbase thickness10 subbase modulus30,000 psi subgrade m r10,000 psi to get k. Lecture 39 concrete pavement design pca and aashto. Lectures of highway engineering forth stage nov2009 rigid pavement 094 2 expansion joints. Evaluation of joint and crack load transfer khazanovich and gotlif 2002 2.
Civil engineering advanced transportation engineering nptel. A typical cross section of british roads is given in fig. Conclusion rigid pavement distress is a serious issue all over the world, the distresses causes some serious problems at wide range. Introduction to transportation engineering by prof. Critical condition of stress in the rigid pavement is the maximum flexural stress occurring in the slab due to wheel load and the temperature changes. Rigid pavementrigid pavement 21 rigid pavements, though costly in initial investment, are cheap in long run because of low maintenance costs, the cost of construction of single lane rigid pavement varies from 35 to 50 lakhs per km in plain area, rigid pavement have deformation in the sub grade is not transferred to subsequent layers. In more recent years, changes in earth science curricula have resulted in a trend, at least in a good many parts of the world, in which economic geology has been sidelined. There are two types of pavements based on design considerations i. Design of rigid pavements is based on westergaards analysis, where modulus of subgrade reaction, radius of relative stiffness, radius of wheel load distribution are used.
A terminal joint figure 79 is placed where a pavement ends at a bridge or similar structure. The sleeper slab is finished smooth and allowed to. Find powerpoint presentations and slides using the power of, find free presentations research about rigid pavement ppt. It awesomely motivates me to create more videos for you. The rigid pavement has a slab action and is capable of transmitting the wheel load stresses through a. Prevention of rigid pavement distress is a challenge to the engineers. Load transfer in granular structure bituminous road. Practices vary from state to state, but dowel bars are typically required in eightinch or thicker pavements.
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