This document discusses different types of rigid pavements. It begins by explaining the difference between flexible and rigid pavements based on how they distribute loads. It then describes four main types of rigid pavement: jointed plain concrete pavement, jointed reinforced concrete pavement, continuous reinforced concrete pavement, and pre-stressed concrete pavement. For each type, it provides details on materials and construction methods. In conclusion, it emphasizes that joints are important for rigid pavements and that the four types described are commonly used worldwide.

1. Erbil Polytechnic University
Erbil Engineering College
Highway Engineering Techniques Department
“Report”
“Types Of Rigid Pavements”
By
“hoshang khalid”
“Stage 1“
“engineering material / Lecturer,
“ M.sawash”
Date of Submission: 22 June 2020

2. Types Of Pavements
There are two types of pavements based on design considerations i.e. flexible pavement and rigid pavement. Difference
between flexible and rigid pavements is based on the manner in which the loads are distributed to the subgrade.

3. Types Rigid Pavement
A rigid pavement is constructed from cement concrete or reinforced concrete slabs. Grouted concrete roads are in the
category of semi-rigid pavements.
The design of rigid pavement is based on providing a structural cement concrete slab of sufficient strength to resists the
loads from traffic. The rigid pavement has rigidity and high modulus of elasticity to distribute the load over a relatively
wide area of soil.
1- Jointed plain concrete pavement
2- Jointed reinforced concrete pavement
3- Continuous reinforced concrete pavement
4- Pre-stressed concrete pavement

4. 1- Jointed plain concrete pavement
are plain cement concrete pavements constructed with closely spaced contraction joints. Dowel bars or aggregate
interlocks are normally used for load transfer across joints. They normally has a joint spacing of 5 to 10m.
2-Jointed reinforced concrete pavement
Although reinforcements do not improve the structural capacity significantly, they can drastically increase the joint
spacing to 10 to 30m. Dowel bars are required for load transfer. Reinforcements help to keep the slab together even after
cracks.

5. 3- Continuous reinforced concrete pavement
Continuously reinforced concrete pavements is a type of concrete pavement that does not require any transverse
contraction joints. Transverse cracks are expected in the slab, usually at intervals of 1.5 - 6 ft (0.5 - 1.8 m).is designed
with enough embedded reinforcing steel (approximately 0.6-0.7% by cross-sectional area) so that cracks are held together
tightly.
4- Pre-stressed concrete pavement
Prestressed concrete pavements are designed and produced to be prestressed to bear tensile forces caused by external
loads by various live objects such as vehicles on the roads or aircraft in the airports. Prestressed concrete pavements well
achieve the due performance in their relatively thinner thickness design.

6. Conclusion
Conclusion 1
– Flexible and rigid pavements are made of different surface
material that can withstand different load’s types and distribution
pattern.
Conclusion 2
– Joints are the most important aspect in the construction of rigid
pavements.
Conclusion 3
3 types of rigid pavements i.e. JPCP, JRCP and CRCP are the
most common types of rigid pavements used worldwide.

7. Reference
1- http://www.cdeep.iitb.ac.in/webpage_data/nptel/Civil%20Engineering/Transportation%20Engg%20I/19-
Ltexhtml/p9/p.html
2- www.engineersdaily.com/2011/03/types-of-rigid-pavements
3- https://theconstructor.org/transportation/types-of-pavement-flexible-and-rigid-pavement/9570/
4- http://qu.edu.iq/el/pluginfile.php/76422/mod_resource/content/1/Pavement%20design%20Lectures%20.pdf
5- https://pavementinteractive.org/reference-desk/pavement-types-and-history/pavement-types/