Dates of Pavement Design Lab (8CE4-22)

Name of faculty : Mr. Pradeep Kumar Jain

Roll No. 001-022 Roll No. 023-045

Expriment No. Date of Perform Date of Submission Expriment No. Date of Perform Date of Submission
Design Sheet - 1 20-Mar-2023 20-Mar-2023 Design Sheet - 1 21-Mar-2023 21-Mar-2023
Design Sheet - 2 27-Mar-2023 27-Mar-2023 Design Sheet - 2 04-Apr-2023 04-Apr-2023
Design Sheet - 3 24-Apr-2023 24-Apr-2023 Design Sheet - 3 18-Apr-2023 18-Apr-2023
Design Sheet - 4 01-May-2023 01-May-2023 Design Sheet - 4 02-May-2023 02-May-2023

Roll No. 046-069 Roll No. 070-093

Expriment No. Date of Perform Date of Submission Expriment No. Date of Perform Date of Submission
Design Sheet - 1 15-Mar-2023 15-Mar-2023 Design Sheet - 1 09-Mar-2023 09-Mar-2023
Design Sheet - 2 29-Mar-2023 29-Mar-2023 Design Sheet - 2 20-Apr-2023 20-Apr-2023
Design Sheet - 3 19-Apr-2023 19-Apr-2023 Design Sheet - 3 27-Apr-2023 27-Apr-2023
Design Sheet - 4 03-May-2023 03-May-2023 Design Sheet - 4 04-May-2023 04-May-2023

Roll No. 094-119 Roll No. 120-215

Expriment No. Date of Perform Date of Submission Expriment No. Date of Perform Date of Submission

Design Sheet - 1 10-Mar-2023 10-Mar-2023 Design Sheet - 1 11-Mar-2023 11-Mar-2023

Design Sheet - 2 31-Mar-2023 31-Mar-2023 Design Sheet - 2 25-Mar-2023 25-Mar-2023
Design Sheet - 3 21-Apr-2023 21-Apr-2023 Design Sheet - 3 29-Apr-2023 29-Apr-2023
Design Sheet - 4 05-May-2023 05-May-2023 Design Sheet - 4 06-May-2023 06-May-2023
Index
 Subject: Pavement Design Lab Code : 8CE4-22
Students will be able to…
CO-1 Understand basics of pavements and pavement mix.
CO-2 Design rigid and flexible pavements as per Indian standards.

Program Outcomes (POs)

Subject
COs
Code PO- PO- PO- PO- PO- PO- PO- PO- PO- PO- PO- PO-
1 2 3 4 5 6 7 8 9 10 11 12

CO-1 2 1 2 1 1 2 2 2 3 --- 2 2
8CE4-22

CO-2 3 2 3 3 1 2 2 1 3 --- 3 2

Program Specific Outcomes (PSOs)

Subject Code COs
PSO-1 PSO-2

CO-1 2 3
8CE4-22
CO-2 2 3
 JAIPUR ENGINEERING COLLEGE AND RESEARCH CENTRE
DEPARTMENT OF CIVIL ENGINEEIRNG
8CE4-22 : Pavement Design Lab

Credit : 1 Internal Assessment : 30

0L+0T+2P External Assessment : 20

Design Sheet - 1: Pavement Mix Analysis

1. A mix contains coarse aggregate (SG = 2.7), fine aggregate (SG = 2.9) and mineral
filler (SG = 1.5) in proportion 60 : 35 : 5 by weight. These materials when mixed with
bitumen (SG = 1.01) and compacted to a unit weight of 2300 kg per cum contains 5%
voids. How much bitumen does the specimen certain? How will you arrive at the
optimum bitumen content based on the curves plotted in Marshal test?
2. Describe field method of finding CBR-value of a subgrade. Also explain the method
of design of a flexible pavement using the soaked CBR-value.
3. Enumerate and explain the desirable properties of soil as a highway material. Classify
and discuss the suitability of the soil as a subgrade material from the result of soil
sample given below:
(i) Soil portion passing through 0.074 mm sieve = 60 %
(ii) Liquid limit = 50 %
(iii) Plastic limit = 30 %

4. Differentiate between terms “Hydrophilic aggregates” and “Hydrophobic aggregates”.

 Design Sheet - 2: Pavement Basics

1. Discuss the various causes of disintegration and the major faults occurring in
WBM and surface –treated (asphalt roads) in India.
2. Explain briefly construction procedure and quality control measures for dense
bituminous macadam (DBM).
3. Explain the procedure of conducting impact test as per IS 2386 part IV. What are
the limits for the material to be used for Sub-base, Base course and Surface
course.
4. Differentiate between the following with reference to bituminous construction.
(i) Prime coat and Track coat
(ii) Bituminous concrete and Bituminous macadam
 Design Sheet – 3: Design of Flexible Pavements

1. Design the pavement section by triaxial test method using the following data:

Wheel load = 5100 kg

Radius of contact area = 15 cm

Traffic coefficient, X = 1.5

Rainfall coefficient, Y = 0.9

Design deflection, Δ = 0.25 cm

E-value of subgrade soil Es = 100 kg/cm2

E-value of base course material Eb = 400 kg/cm2

E-value of 7.5 cm thick bituminous concrete surface course = 1000 kg/cm2

Also draw the pavement section with base course. Assume the pavement to consist of
single layer of base course material.

2. Current Truck-traffic Volume (AADTT) for Six-lane freeways are shown in the table
below. A bituminous pavement with a 20 years design life is to be designed according
to the Hveem method. Determine the design ESAL for lane-3 of this freeway. If it is
assumed that traffic-volumes for each truck classification will grow linearly by 25%
over the next 20 years.

Vehicle-type Current traffic volume (AADTT)

2 axle Trucks 1000
3 axle Trucks 500
4 axle Trucks 250
5 axle Trucks or more 1200
Assume:

(i) Lane distribution factor for Lane-3 is 0.80.

(ii) ESAL constant as
 Vehicle-type Current traffic volume (AADTT)

2 axle Trucks 1380

3 axle Trucks 3680
4 axle Trucks 5880
5 axle Trucks or more 13780

3. A traffic survey conducted on four-lane single carriageway road reported traffic of

1400 CVPD (in both directions). Assuming growth rate of 5% design life of 20 years
and vechile damage factor of 3.5. Calculate design traffic to be used in pavement
design in terms of million standards axels (msa). As per IRC, lane distribution factor
= 0.75.

4. Design a flexible pavement of 7.0 m wide carriage way. Out of total present 600
CVPD, 200 CVPD have VDF of 2.5 and remaining vehicles have VDF of 3.5. Design
the flexible pavement if effective CBR of the subgrade is 6.0%. Planning and
construction period is 1.5 year and design life is 15 years. Assume necessary data
suitably. Design template for 6.0% of CBR value is as under:

Design Wearing Binder Base Sub base

Traffic course (mm) course (mm) (mm) (mm)
2 msa 20 SDBC 50 DBMM 225 175
5 msa 25 SDBC 50 DBM 250 210
10 msa 40 BC 65 DBM 250 260
20 msa 40 BC 90 DBM 250 260
 Design Sheet – 4 : Design of Rigid Pavements

1. Calculate the stresses at interior, edge and corner regions of a cement concrete
pavement using Westergaard‟s stress equation, using the following data:
(i) Wheel Load, P = 4100 kg
(ii) Modulus of elasticity of cement concrete , E = 3.3 x 105 kg/cm2
(iii) Pavement thickness , h = 18 cm
(iv) Poisson‟s ratio of concrete, µ = 0.15
(v) Modulus of subgrade reaction, k = 25 kg/cm3
(vi) Radius of contact area, a = 12 cm
2. Differentiate between flexible and rigid pavements.
3. Determine the warping stresses at interior edge and corner region in a 32 cm thick
concrete pavement with transverse joints and longitudinal joints at 4.5 m and 3.6 m
interval respectively. The modulus of subgrade reaction is 6 kg/cm 2/cm. Assume
temperature differential for a day condition to be 150C and radius of contact area is 15
cm. Additional data for cement concrete pavement is given below:
e = 10 x 10-6 per 0C; E = 3 x 105 kg/cm2; µ = 0.15, Cx = 0.80; Cy = 0.45
4. Define radius of relative Stiffness and Equivalent Radius of Resting Section.
Calculate the wheel load stress at corner using Westergaard‟s corner load stress
analysis from the following data:
(i) Design wheel load = 4200 kg
(ii) „E‟ value of cement concrete = 2.8 x 105 kg/cm2
(iii) Thickness of pavement slab = 20 cm
(iv) µ valve of cement concrete = 0.15
(v) Modulus of subgrade reaction = 7.0 kg/cm3
(vi) Radius of contact area = 14.0 cm

5. A rigid pavement of 25 cm thickness of M40 grade of concrete is supported over a

subgrade having modulus of subgrade reaction as 8.0 kg/cm3. If dowel bars are placed
at centre-to-centre spacing of 30 cm, calculate the maximum load carried by a single
dowel which is just below the wheel. Assume wheel load as 4100 kg, participation of
dowel bars in load distribution up to 1.0 × radius of relative stiffness and load to be
transferred by joint as 50%. Poisson‟s ratio of the concrete may be taken as 0.15.