1. FLIPPED CLASSROOM ACTIVITY CONSTRUCTOR – USING EXISTING CONTENT

2. Table of Contents SECTION SLIDE # 4 18 ABOUT YOU 3
OUT-OF-CLASS SEGMENT 4
IN-CLASS SEGMENT 9
EVALUATION 18
COMMUNITY BUILDING

3. S.Rajakumar Construction Materials Concrete Materials CIVIL ENGG.
Third Year B.E. Civil Engineering Students
ANNA UNIVERSITY, THOOTHUKUDI CAMPUS
(A Constituent college of Anna University, Chennai)

4. Out-of-class Activity Design-1
Learning Objective(s) of Out-of-Class Activity
At the end of watching the videos student should be able to
Learn about Concrete and the admixtures(Apply Level)
Materials used for concrete (Understand Level)
The performance of concrete – strength of concrete (Apply Level)
Key Concept(s) to be covered
Chemical and mineral admixtures.
Cement and Aggregates
Concrete performance by Indian standard code IS 456

5. Out-of-class Activity Design - 2
Video 1 :
Video 2 :
Video 3 :
Video 4 :
Video 5 :
Main Video Source URL
License of Video
CC-BY-SA common you tube license details on NPTEL visit
Mapping Concept to Video Source
CONCEPT
VIDEO SEGMENT
DURATION
(in min)
Concrete components V
8.00
Cement and Aggregate V
8.10
Merits and demerits of concrete V
8.50
Composite material V
6.30
Concrete performance V
8.28
TOTAL DURATION
39.18 min

6. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
Concrete as composite material and the admixtures used in concrete
Q. Concrete and admixtures
1) Concrete components
2) What are chemical admixtures and Uses of mineral admixtures
3)Types of cement used for concrete
10 minutes
Watch V1 and then answer Q1
Watch V1 and then answer Q2
Watch V2 and then answer Q3

7. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
Merits and demerits of concrete, Composites of concrete material
Q1.What are the advantages and dis advantages of concrete
Q2. Normal strength concrete and high performance concrete
10 minutes
Watch V3 and then answer Q1 and Watch V4 and then answer Q2

8. Out-of-class Activity Design - 3
Aligning Assessment with Learning Objective
Learning Objective
Assessment Strategy
Expected Duration
(in min)
Additional Instructions (if any)
Performance of concrete
Q. Designation of normal strength of concrete
10 minutes
Submit answers to all questions 3 hours before coming to class.
Total activity duration
30 minutes

9. In-class Activity Design -1
Learning Objective(s) of In-Class Activity
At the end of the class, students will be able to,
Learn the composite materials of concrete like cement, sand, aggregate and admixtures (Understand Level)
How Strength of concrete affect the quality of concrete (Apply Level)
Key Concept(s) to be covered
Admixtures
Types of cement

10. In-class Activity Design -2
Active Learning activity(ies) that you plan to do
Real world problem solving using.
Latest construction materials
Whether admixtures helps in increasing the strength of concrete
Concept clarification using.
How the strength of concrete can be obtained very correctly
i. use the mix ratio with respect to design mix
ii. Proper manpower
iii. Use of quality material
iv. Proper supervision

11. In-class Activity Design -2
Peer Instruction Strategy – What Teacher Does
Pose the two PI questions at the start of the class and provide summary of basic identities and expression simplification.
Q 1: For ensuring quality of concrete, use
A.single sized aggegates
B.two sized aggregate
C.graded aggregates
D.coarse aggregates.

12. In-class Activity Design -2
Peer Instruction Strategy – What Teacher Does
 Q 2: Curing a concrete for long period ensures better
A.volume stability
B.Strength
C.water resistance
D.water tightness and durability
E.all the above.

13. In-class Activity Design -2
Peer Instruction Strategy – What Student Does
Individual response from the student are very theoretical for the questions
Discuss with peers and come to consensus :
After discussion students have vast knowledge with the aggregate and curing concept.
Instructors Explanation:
The graded aggregates are used that the students will learn from the theory part itself as graded aggregates will properly bond between all other composite materials.
the answer all are similar and also all the answer option are correct volume stability, Strength water resistance, water tightness and durability.

14. In-class Activity Design -2
TPS Strategy – What Instructor does
For concreting the usage of M-sand is advisable or river sand is the best one?
Whether the usage of admixture is advisable in workability of concrete?

15. In-class Activity Design -2
TPS Strategy – What Instructor does
Gave 2 minutes for think: Student have knowledge about the Manufactured sand and river sand. The workability of concrete.
Instruction: M sand used as a component for concrete
The water cement ratio used for concreting was explained related to the workability also the usage of admixtures were discussed
Water-reducing admixtures are used to reduce the quan- tity of mixing water required to produce concrete of a certain slump, reduce water-cement ratio, reduce cement content, or increase slump. Typical water reducers reduce the water content by approximately 5% to 10%.

16. In-class Activity Design -2
TPS Strategy – What Instructor does
1. Pair : The students are grouped and the topic were discussed
2.Instruction: The answers were compared with all the groups formed to discuss the topic
3. The idea behind usage of M-sand is advisable if the quality is good
4. Also the workability deals with the water cement ration
5. Factors Affecting Workability of Concrete. Aconcrete is said to be workable if it is easily transported, placed, compacted and finished without any segregation. Workability is a property of freshly mixed concrete, and a concrete is a mixture of cement, aggregate, water & admixture

17. In-class Activity Design -2
TPS Strategy – What Instructor does
Sharing ideas of students:
The students shared their ideas in workability and usage of M-sand in concrete
Students had different opinions in usage of M sand as it is not like natural river sand is it advisable to use in concrete.
Also the government also refer to use M-Sand. If the quality of the M sand is upto the mark like river sand we can use the M sand.
In workability the admixtures now play a major role as many of the concreting are done by Ready mix concrete so the admixtures can be used.
The percentage of admixtures used have to fixed by trial mix.

18. In-class Activity Design -2
Feedback: Students had a vast knowledge about the both the above strategies by giving the listening techniques, questioning techniques
Also the thinking of questions and pairing the group techniques also used the students to learn a lot. Sharing the ideas gave students confident in the subject.
Thus the M-sand is advised to use in construction field with respect to standard of river sand.
Given a practical exposure related to the workability of concrete using slump cone test. The water cement ratio place a major role in workability of concrete with the admixtures used.
Thank you