CIVIL DIPLOMA 4TH SEMESTER CONCRETE TECHNOLOGY





CIVIL DIPLOMA 4TH SEMESTER CONCRETE TECHNOLOGY

 


Course Title: CONCRETE TECHNOLOGY

Credits (L:T:P) : 4:0:0

Total Contact Hours: 52

Course Code:

15CE43T

Type of Course: Lectures, Self Study & Student activity

Credit :04

Core/ Elective: Core

CIE- 25 Marks                                                                                                                       SEE- 100 Marks




Pre-requisites: Student should have the knowledge of basics of civil engineering, fundamentals of chemistry and building materials.

Course Objectives:
The student should be able to
1. Adopt the basic knowledge of science and engineering to properties of concrete.
2. Imbibe the culture of professional and ethical responsibilities by following codal provisions in concrete mix design.
3. Identify and solve problems in concrete mix design.
4. Engage in lifelong learning with the advances in concrete technology.

At the end of the course the students should be able to

Course Outcome

CL

Linked PO

Teaching Hrs

CO1

Define concrete; understand the functional role of ingredients in concrete and the application of concrete as a building material.

 

R/U/Ap

 

1,2,3,5

 

9

CO2

Explain the significance of water cement ratio, differentiate the behavior of concrete in fresh and hardened states, and know the fundamental characteristics of fresh and hardened concrete.

 

R/U/Ap

 

1,2,3,4,5

 

17

CO3

Design concrete mixes as per codal provisions.

R/U/Ap/Ay

1,2,3,4,5,6,7

7

CO4

Summarize the sequence and procedure of concreting operations and the importance of joints in concrete structures.

R/U

 

1,2,4,5

 

12

CO5

Discover the need for sustainability and study the usage of waste/ recycled materials in concrete

R/U/Ap/

 

7

 

CO6

Evaluate the effect of the environment on service life performance, properties and failure modes of structural concrete and present it as a case study.

R/U/Ap/ Ay/ C

1,2,3,4,5,

6,7,8,9,10

 

*

Total sessions

52


Legend- R; Remember   U:Understand   Ap: Application Ay: Analysis C:Creation E: Evaluation
* Related to Student activity beyond classroom hours.

Programme outcome Attainment Matrix

 

 

 

 

Course

Programme Outcome

PO1

PO2

PO3

PO4

PO5

PO6

PO7

PO8

PO9

PO10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Concrete technology

3

3

3

3

3

2

2

1

1

1


Level 3- Highly Addressed, Level 2-Moderately Addressed, Level 1-Low Addressed.
Method is to relate the level of PO with the number of hours devoted to the COs which address the given PO. If >40% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 3
If 25 to 40% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 2 If 5 to 25% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 1
If < 5% of classroom sessions addressing a particular PO, it is considered that PO is considered not-addressed.
DETAILED COURSE CONTENT


UNIT

COURSE CONTENTS

HOURS

 

 

 

 

 

 

 

 

1

INTRODUCTION: - Definition of concrete. Advantages of concrete. Uses of concrete in comparison to other building materials.

CONCRETE INGREDIENTS

Cement – Chemical composition, grades of cement, Tests on cement-(fineness, normal consistency, setting time, soundness, and compressive strength)

i) Storing Cement:- (a) Storing of cement in the warehouse., (b) Storing of cement  at site., (c) Effect of storage on strength of cement

Water -Quality of mixing water, Limits on the impurities as per ISI.

Fine aggregate – specific gravity, density, moisture content, bulking, sieve analysis, grading of aggregates, deleterious materials, emerging trends of fine aggregate- manufactured sand.

Coarse aggregate – importance of size, shape and texture, grading of aggregates, sieve analysis, specific gravity, flakiness and elongation index, crushing, impact and abrasion tests. .

Aggregate:- Storing of aggregate on site for maintaining uniformity of moisture and cleanliness.

Admixtures

Chemical admixtures– (uses and effect):- plasticizers, accelerator, retarders and air entraining gents, carboxyclic based admixtures.

Mineral admixtures –fly ash, blast furnace slag, meta-kaolin, Silica fume, rice husk ash.

 

 

 

 

 

 

 

 

 

9

 

 

2

Behavior of concrete

Hydration of cement, Bogue’s compounds, gel/space ratio, Calcium silicate hydrate, calcium hydroxide, calcium aluminates hydrates, water requirement for hydration, Water Cement Ratio- water cement ratio law and conditions under which the law is valid, Effect of various W/C ratios on the physical structure of hydrated cement, internal moisture, temperature, age, and size of specimen. Definition of cube strength

 

 

5


UNIT

COURSE CONTENTS

HOURS

 

of concrete. Relations between water cement ratio and strength of concrete, Structure

of concrete, transition zone,

 

 

 

 

 

 

 

 

 

3

PROPERTIES OF CONCRETE:

Properties of Fresh concrete: Workability – definition, factors affecting workability, measurement of workability by slump, compaction factor, vee-bee, flow tests. Segregation and bleeding.

Properties of hardened concrete:- (a) Strength. Characteristic strength, (b) Durability, (c) Permeability., Factors affecting strength, w/c ratio, maturity concept, effect of aggregate properties, compressive strength, tensile strength, bond strength, modulus of rupture, modulus of elasticity, poisson ratio, the relationship between these parameters., aggregate-cement bond strength. Shrinkage – plastic shrinkage and drying shrinkage, factors affecting shrinkage. Creep – measurement of creep, factors affecting creep, effect of creep.

Durability – definition, significance, permeability, Factors contributing to cracks in concrete – plastic shrinkage, settlement cracks, Thermal expansion, and structural design deficiencies. Concrete in Aggressive Environment: Alkali – Aggregate Reaction, Sulphate Attack, Chloride Attack, Acid Attack, Effect of Sea Water, Carbonation, special coating for Water Proofing, Freezing and thawing,

Tests on hardened concrete – compressive strength, split tensile strength, flexural strength, non-destructive testing of concrete. (d) Dimensional changes. (iii) Quality Control at site:- Control tests on cement, aggregate water and concrete. Concept of quality control.

 

 

 

 

 

 

 

 

12

 

 

4

CONCRETE MIX DESIGN: Concept of mix design, Objectives of mix design, grades of concrete, different methods of mix design, factors affecting mix proportions variables in proportioning, exposure conditions, Design data for moisture, bulkage, absorption and suitable fine aggregate and coarse aggregate ratio, Procedure of mix design as per IS 10262-2009, numerical examples of mix design as per IS 10262- 2009 and IS 456

Adjustment on site for Bulking, water content, Absorption, Workability

 

 

07

 

 

 

 

 

 

 

 

5

CONCRETE OPERATIONS:-

(ii)  Batching:- (a) Batching of cement, (b) Batching of aggregate: Batching by volume, using gauge box, selection of proper gauge box, Batching by weight-spring balances and by batching machines., (c) Measurement of water.

(iii)  Mixing (a) Hand mixing (b) Machine mixing-types of mixer, capacities of mixers, choosing appropriate size of mixers, operation of mixers, mixing of water.(c) Maintenance and care of machines. precautions before, during and after concreting (iv)Transportation of Concrete:- Transportation with and situations of use of the following- pans, wheel barrows, transit mixers, chutes, belt conveyors, pumps, tower cranes.

Ready-mix concrete-manufacturing of ready mix concrete

(v)                   Placement of Concrete :(a) Prior preparation before placement; when put on natural soil, rocky base, specially prepared sub-base (brick soling and water bound macadam base), hardened concrete base, checking of form work, checking provision for joints. (b) Placement of concrete-precautions to be taken.

(vi)                      Compaction :(a) Hand compaction-pavement, narrow and deep members. (b) Machine compaction-types of vibrators-internal and external-Method of handling- suitability for various situations.

(vii)               Finishing concrete slabs-screeding, floating, and trowelling.

 

 

 

 

 

 

 

 

14

UNIT

COURSE CONTENTS

HOURS

 

Hot Weather Concreting- Cold Weather Concreting-under water concreting (viii)Curing:- Object of curing, Method of curing,- conventional and advanced Recommended duration for curing.

(ix)Jointing:- Importance, types, Location

 

 

 

6

Special types of concrete:- sustainability- application of waste/ recycled materials in concrete. Comparison of the following special concrete with conventional concrete- High strength concrete, fiber reinforced concrete, polymer concrete, ferrocement concrete. Foamed concrete, pervious concrete, high density concrete, self- compacting concrete, high performance concrete, Reinforced Cement concrete pavement quality concrete (Composition advantages and specific applications only)

Suggested activity (Case study)

 

 

05


à´·SUGGESTED ACTIVITIES
The topic should be related to the course in order to enhance his knowledge, practical skill &
and lifelong learning, communication, modern tool usage.

1. Prepare a Spread sheet of concrete mix design template which helps to design the concrete mix and prepare practical test report consulting industry.
2. Prepare a detailed search report of Non-destructive test on concrete and present it.
3. Prepare a literature survey on Repairs and rehabilitation of structures.
4. Design a concrete mix as per ACI.
5. Visit your Institute’s Library / internet centre and enlist the books available on the topic given by your teacher. Prepare a bibliography consisting name of the author, title of the book, publication and place of publication. Enlist the magazines, periodicals and journals being available in your library.(any one)
a) Sustainable concrete buildings / Concrete green building
b) Present scope of Epoxy and Polyurethane in construction industry.
c) Strength and durability relationship, volume change in concrete
d) permeability of concrete
e) Alkali aggregate reaction,
f) Chloride attack, sulphate attack etc.
g) Corrosion of steel - causes of corrosion, remedial measure to control
h) Ultrasonic Pulse Velocity - techniques of measuring and factors affecting measurement of Ultrasonic Pulse Velocity
i) Cover meter and Corrosion meter
j) Polymer concrete
k) Fiber reinforced concrete
l) No fines concrete
m) Ferrocement
6. Writing report on (any one)
a) Latest standards, specification, Test methods of ASTM /AASHTO/NRMCA.
b) Case study of Concrete and grunting conducted in any project
 
c) Study on determine physical properties of ingredients of concrete in laboratory
d) Minimum & Maximum cement content on durability of Concrete
e) Schmidt’s rebound hammer test concrete with their limitation
f) Vacuum concrete
g) Shortcreting
h) Vacuum Dewatered Concrete
i) Pavement quality concrete
j) RMC

7. Self-Compacting Concrete (SCC) – Mix Design and methods of testing.
8. Concrete Mix Design by DOE Method.
9. Mix design of fly ash concrete by IS 10262 – 2009.
10. Water permeability test on concrete. NOTE
1. Students should select any one of the above or other topics relevant to the subject approved by the concerned faculty, individually or in a group of 3 to 5. Students should mandatorily submit a written report and make a presentation on the topic. The task should not be repeated among students. Report will be evaluated by the faculty as per rubrics. Weightage for 5 marks Internal Assessment shall be as follows: (Unsatisfactory 1, Developing 2, Satisfactory 3, Good 4, Exemplary5)
2. Reports should be made available along with bluebooks to IA verification officer
Example of model of rubrics / criteria for assessing student activity

 

 

 

Dimension

Students score

(Group of five students)

 

 

 

 

 

Rubric Scale

Unsatisfactory 1, Developing 2, Satisfactory 3, Good 4, Exemplary5

1.Literature

5

 

 

 

 

2.Fulfill team’s roles & duties

2

 

 

 

 

3.Conclusion

3

 

 

 

 

4.Convensions

4

 

 

 

 

Total

13

 

 

 

 

Average=(Total /4)

3.25=4

 

 

 

 

Note: Concerned faculty (Course coordinator) must devise appropriate rubrics/criteria for assessing Student activity for 5 marks One activity to attain last CO (course outcome) may be


given to a group of FIVE students
Note: Dimension should be chosen related to activity and evaluated by the course faculty

 

Dimension

Rubric Scale

1

Unsatisfactory

2

Developing

3

Satisfactory

4

Good

5

Exemplary

1.Literature

Has not included relevant info

Has included few relev ant info

Has included some relev ant info

Has included many relev ant info

Has included all relevant info needed

2. Fulfill team’s roles & duties

Does not perform any duties assigned

Performs very little duties

Performs partial duties

Performs nearly all duties

Performs all duties of assigned team roles

3.Communication

Poor

Less Effective

Partially effective

Effective

Most Effective

4.Convensions

Frequent Error

More Error

Some Error

Rare Error

No Error

Course Delivery: The course will be delivered through lectures, demonstration, site visits, expert lectures.


Course Assessment and Evaluation Scheme:

 

What

To whom

When/Where

(Frequency in the course)

Max Marks

Evidence collected

Course outcomes

 

CIE

IA

Students

Thrice                     test (Average of three tests)

Test 1

20

Blue books

1,2

Test 2

2,3

Test3

4,5

Mini project

05

Report

1,2,3,4,5

SEE

End

Exam

End of the course

100

Answer scripts at

BTE

1,2,3,4,5

 

Student Feedback                 on

course

Students

Middle of the course

 

Feedback forms

1, 2, Delivery of course

End of Course Survey

End of the course

 

Questionnaires

1,2,3,4,5,6

Effectiveness of Delivery of instructions & Assessment Methods


*CIE – Continuous Internal Evaluation *SEE – Semester End Examination
Note: I.A. test shall be conducted for 20 marks. Average marks of three tests shall be rounded off to the next higher digit.


Weightage of Marks and blue print of marks for SEE

 

Unit

 

Major Topics

Questions to be set for SEE

 

 

 

 

A*

 

 

B*

Cognitive Levels

R

U

Ap

Ay

1

Introduction to Concrete and

Concrete Ingredients

9

40%

20%

40%

0%

25

17

1

2

10

5

10

0

2

Behavior of concrete

5

70%

30%

0%

0%

15

10

1

1

10

5

0

0

3

Properties of Concrete

12

50%

50%

0%

0%

30

23

2

2

15

15

0

0

4

Concrete Mix Design

7

21%

20%

20%

40%

25

13

1

2

5

5

5

10

5

Concrete Operations

12

50%

33%

17%

0%

30

23

2

2

15

10

5

0

6

Special types of concrete

7

25%

75%

0%

0%

20

13

2

1

5

15

0

0

Total

52

43%

38%

13%

7%

145

100

9

10

60

55

20

10


A*-SEE QUESTIONS TO BE SET FOR (05MARKS ) in PART – A
B*- SEE QUESTIONS TO BE SET FOR (10MARKS) in PART – B (mix design problem compulsory)

Questions for CIE and SEE will be designed to evaluate the various educational components such as:


Sl.

No

Bloom’s taxonomy

% in Weightage

1

Remembering and Understanding

81

2

Applying the knowledge acquired from the course

13

3

Analysis

7

4

Synthesis ( Creating new knowledge)

0

5

Evaluation

0


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