msbte concrete lab manual-9021

A Laboratory Manual for

Concrete Technology

( 9021 )

Semester - III

Maharashtra State

Board of Technical Education, MumbaiISO 9001:2000

Diploma in Civil Engineering Group (CE/CR/CS)

2 MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION

Concrete Technology ( 9021 )

2006, Maharashtra State Board of Technical Education,

49, Kherwadi, Aliyawar Jung Marg, Bandra (East), Mumbai - 400 051,

Maharashtra State, India.

Any part of this Laboratory Manual may not be reproduced in any form or by any means without

permission in writing from MSBTE Mumbai.

Project Institution Government Polytechnic Jalgaon National Highway,

Zillha peth Jalgaon Pin - 425002

Project Period Nov. 2006 - Feb.2007

Chief Project Coordinator Mr. A.V. Pawar

Principal,

Government Polytechnic Jalgaon

Project Coordinator Dr. M.V. Ingale,

Head of Applied Mechanics Department,


Subject Experts 1) Mr. K. P. Wankhede

Lecturer in Applied Mechanics


2) Mr. S.N. Chaudhary,

Lecturer in Civil Engineering

J.T.M. Polytechnic Faizpur Tal. Yawal Dist Jalgaon.

Pin Code No. 425524

Designations Team for design

CURRICULUM DEVELOPMENT CELL, MSBTE, MUMBAI.

LABORATORY MANUAL DEVELOPMENT PROJECT

MAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION 3


MAHARASHTRA STATE BOARD OF

TECHNICAL EDUCATION

Certificate

This is to certify that Mr. / Ms.

Roll No. ......, of Third Semester of Diploma in

has completed the term

work satisfactorily in Concrete Technology ( 9021 ) for the

academic year 200 . to 200 .... as prescribed in the

curriculum.

Place : .. Enrolment No.: ..

Date : ... Exam. Seat No. : ..

Subject Teacher Head of the Department Principal

Seal of

Institution



LEARNING OVERVIEW

IMPORTANCE OF THE SUBJECT

Concrete is one of the important construction materials. Study of its constituents and their properties

is essential for preparing desired mix so as to develop required strength necessary for various types of

Structures. The durability of the structures depends upon the care with which ingredients of concrete are

selected, mixed, placed, compacted .and cured.

Concrete is used not only for construction of building, but also for concrete roads, gravity dams,

retaining walls, water tanks, airport runway pavements, etc. The information regarding various properties

of concrete in its plastic stage as well as hardened Stage is necessary to enable the technician and

supervisors for quality control during construction work. Knowledge of the subject is essential for the

Design of Concrete Structures.

Strength, workability, durability and cost are the four important characteristics of concrete

Compressive strength of concrete describes the load caring capacity, workability is the indicator of ease

with which we work on concrete ,Where as durability shows the resistance of concrete to environmental

attack. A durable concrete is one that performs satisfactorily in the working environment during its anticipated

exposure conditions during service. The materials and mix proportions specified and used should be such

as to maintain its integrity and if applicable, to protect embedded metal from corrosion. The factors influencing

durability include:

i) the environment

ii) the cover to embedded steel

iii) the type and quality of constituent materials

iv) the cement content and water/cement ratio of concrete

v) workmanship, to obtain full compaction and efficient curing

Concrete mix design gives the concrete of required compressive strength, workability from the

available constituents with optimal cost, various propertied of constituents are required for performing mix

design. In concrete technology laboratory the quality of constituent materials of concrete such as cement

sand , coarse aggregate is decided by performing various tests confirming to IS standards .Similarly , the

properties of fresh concrete were studied to decide its suitability and its ease to perform various operations

on concrete.

i



ii

LEARNING STRUCTURE OF SUBJECT AREAThird semester -Civil Engineering

Concrete Technology (9021)



DEVELOPMENT OF SKILLS

In concrete technology laboratory, Students are expected to have specific Knowledge of subject

such as concepts related with concrete and its various ingredients and principles and procedures of carrying

out various tests on them to determine their properties. In addition, students are also expected to make

efforts to develop[p desired intellectual and motor skills to perform the tests according to the Standard

procedure laid down and evaluate the results.

Broad perspective of acquisition of skills and content specific knowledge is given below.

a) Intellectual skills b) Motor skill

1. Understanding 1. Making arrangement

2. Discriminating / Distinguishing 2. Performing

3. Deciding 3. Measuring

4. Computing 4. Observing

Following table gives gird of experiments and related intellectual and motor skills. Students are

expected to focus on acquiring specific skills mentioned.

GRID TABLE

Following table gives gird of the experiments and related intellectual and motor skills.

Teacher shall ensure for development of generic skills during the practical.

Students are expected to focus on acquiring specific skills mentioned therein.

iii

No. I1 I2 I3 I4 M1 M2 M3 M4

1 To determine of fineness of Cement. 2 To determine Standard /Normal Consistency

of Cement

3 To determine Initial and Final setting time of cement

4 To determine Compressive Strength of Cement

5 To determine soundness of cement by Le-chatelier's apparatus

6 To determine silt content of sand by volume /weight .

7 To determine Maximum percentage of bulking of sand.

8 To determine fineness modulus of sand by sieving method.

9 To determine aggregate Impact value 10 To determine aggregate abrasion value

Sr. Name of Experiment Intellectual skills Motor skills



NOTE : Identified Skills

STRATEGY FOR IMPLEMENTATIONIt is suggested that all the experiments shall be completed in the hours of practical provided in the

curriculum for the semester.

TEACHING AND EXAMINATION SCHEME

@ Internal Assessment.

iv

No. I1 I2 I3 I4 M1 M2 M3 M4

11 To determine aggregate crushing value 12 To determine F.M. and particle size

distribution of coarse aggregates

13 To determine workability of concrete by slump cone method.

14 To determine workability of concrete by compaction Factor test.

15 Mini Project. To Study of Compressive Strength of concrete for different water

cement ratio with and without curing.

Sr. Name of Experiment Intellectual skills Motor skills



GUIDELINES FOR TEACHERS

The teacher should discuss the following points for the benefit of students before start of practical

of the subject.

1. Learning Overview: To develop better understanding of importance of the subject. To know related

skills to be developed such as intellectual skills and motor skills.

2. Learning Structure: In this topics and sub topics are organized in systematic way so that ultimate

purpose of learning the subject is achieved. This is arranged in the form of fact, concept, principle,

procedure ,application and problem.

3. Know your Laboratory work: To understand the layout of laboratory, specifying of equipment /

instruments / materials, procedure, working in groups, planning time etc. Also to know total amount

of work to be done in the laboratory

4. Teacher shall ensure that required equipments are in working condition before start of experiment;

also keep operating instruction manual available.

5. Explain prior concepts to the students before starting of each experiment.

6. Involve student's activity at the time of conduct of each experiment.

7. While taking reading / observation each student (form a batch of 20 students) shall be given a

chance to perform or observe the experiment.

8. List of questions is given at the end of each experiment. Teacher shall instruct the students to

attempt all questions given at the end of each experiment / exercise. Teacher shall ensure that

each student writes the answers to the allotted questions in the laboratory manual after

performance is over.

9. If the experimental set up has variations in the specifications of the equipment, the teacher are

advised to make the necessary changes, wherever needed.

10. Teacher shall assess the performance of students continuously as per norms prescribed by MSBTE.

11. Teacher should ensure that the respective skills and competencies are developed in the students

after the completion of the practical exercise.

12. Teacher is expected to share the skills and competencies to be developed in the students.

13. Teacher may provide additional knowledge and skills to the students even though not covered in

the manual but are expected from the students by the industries.

14. Teachers shall ensure that industrial visits recommended in the manual are covered.

15. Teacher may suggest the students to refer additional related literature of the technical papers /

reference books / seminar proceedings, etc.

16. During assessment teacher is expected to ask questions to the students to tap their achievements

regarding related knowledge and skills so that students can prepare while submitting record of the

practical. Focus should be given on development of enlisted skills rather than theoretical / codified

knowledge.

17 Teacher should enlist the skills to be developed in the students that are expected by the industry.

18 Teacher should organize group discussions / brain storming sessions / seminars to facilitate the

exchange of knowledge amongst the students.

19 Teacher should ensure that revised CIAAN - 2006 norms are followed simultaneously and

progressively.

20 Teacher should give more focus on hands on skills and should actually share the same.

21 Teacher shall also refer to the Circular No. MSBTE/D-50/Sem (I) Lab Manual/2006/4565 dated 6/6/

2006 for additional guideline

v



INSTRUCTIONS FOR STUDENTS

Students shall read the points given below for understanding the theoretical concepts and practical

applications.

1. Listen carefully to the lecture given by teacher about importance of subject, curriculum philosophy,

learning structure, skills to be developed, information about equipment, instruments, procedure,

method of continuous assessment, tentative plan of work in laboratory and total amount of work to

be done in a semester

2. Students shall undergo study visit of the laboratory for types of equipment, instruments, material to

be used, before performing experiments.

3. Read the write up of each experiment to be performed, a day in advance.

4. Organize the work in the group and make a record of all observations.

5. Understand the purpose of experiment and its practical implications.

6. Write the answers of the questions allotted by the teacher during practical hours if possible or

afterwards, but immediately.

7. Student should not hesitate to ask any difficulty faced during conduct of practical / exercise.

8. The student shall study all the questions given in the laboratory manual and practice to write the

answers to these questions.

9. Student shall develop maintenance skills as expected by the industries.

10. Student should develop the habit of pocket discussion / group discussion related to the experiments

/ exercises so that exchanges of knowledge / skills could take place.

11. Student shall attempt to develop related hands - on - skills and gain confidence.

12. Student shall focus on development of skills rather than theoretical or codified knowledge.

13. Student shall visit the nearby workshops, workstation, industries, laboratories, technical exhibitions,

trade fair etc. even not included in the Lab Manual. In short, students should have exposure to the

area of work right in the student hood.

14. Student shall insist for the completion of recommended Laboratory work, industrial visits, answers

to the given questions, etc.

15. Student shall develop the habit of evolving more ideas, innovations, skills etc. those included in the

scope of the manual.

16. Student shall refer technical magazines, proceedings of the Seminars, refer websites related to the

scope of the subjects and update their knowledge and skills.

17. Student should develop the habit of not to depend totally on teachers but to develop self-learning

techniques.

18. Student should develop the habit to react with the teacher without hesitation with respect to the

academics involved.

19. Student should develop habit to submit the practical, exercise continuously and progressively on

the scheduled dates and should get the assessment done.

20. Student should be well prepared while submitting the write up of the exercise. This will develop the

continuity of the studies and he will not be over loaded at the end of the term.

vi



Sr. Page Date of Date of Assess- Sign. of

No. Name of the Exercise No. Perfor- submi - ment Teacher

mance ssion Max. and

Marks 10 Remarks

LIST OF EXERCISES AND RECORD OF PROGRESSIVE ASSESSMENT

1 To determine fineness of Cement. 1

2 To determine Standard / Normal

Consistency of Cement

3 To determine Initial and Final setting time

of cement

4 To determine Compressive Strength of

Cement

5 To determine soundness of cement by

Le-chatelier's apparatus

6 To determine silt content of sand by

volume / weight .

7 To determine Maximum percentage of

bulking of sand.

8 To determine fineness modulus of sand

by sieving method.

9 To determine aggregate Impact value

10 To determine aggregate abrasion value

11 To determine aggregate crushing value

12 To determine F.M. and particle size

distribution of coarse aggregates

13 To determine workability of concrete by

slump cone method.

14 To determine workability of concrete by

Compaction Factor test.

15 Mini project. To Study of Compressive

Strength of concrete for different water

cement ratio with and without curing.

Total Marks

...Average

Marks out

of 10.*

vii

* To be transferred to proforma of CIAAN - 2006 (Proforma A-1)



Sr. Name of the Tests to be performed Do as directed

No. Apparatus/Equipments with the equipments

List of equipment /apparatus in concrete laboratory is as below:(Student to write the information in the column 'do as Directed')

1 Set of sieves Fineness modulus of Measure and write the

aggregates size of aperture of 2.36

mm and 600 micron IS

sieve.

2. Vicat Apparatus, plunger and Normal consistency, Initial and Write an arrangement,

set of needles final setting time of cement made for uniform

travel of the needle /

plunger

..

3. Mortor Vibrator To mix cement mortor Start the machine and

uniformly. feel the vibrations at

the stand of mould.

Write the maximum

time that can be set

for mixing of

mortor

.

4. Compression testing machine To apply compressive load in State the value of the

. case of aggregate crushing maximum load that

value, compressive strength can be applied with

of concrete. compressive CTM

strength of cement ..

5. Aggregate impact testing machine To determine the strength of State the height of fall

. aggregates for impact loads. of the

weight

.

6. Aggregate abrasion testing machine To determine the resistance of Write the name of the

aggregates for wear and tear. machine available in

the lab. Does it have

three cylinders

7. Apparatus for aggregate crushing To find the crushing strength Measure the sizes

value of aggregates. of the moulds

..

8. Thermostatically controlled oven To dry the aggregates Write the maximum

.. temperature to which

the oven can be

set

.

9. Slump cone, Vee Bee Consist meter, To measure the workability of Write unit of

Compaction factor apparatus, flow fresh concrete. measurement in each

table case



Sr. Name of the Tests to be performed Do as directed

No. Apparatus/Equipments with the equipments

10 Water curing tank To have curing of the concrete Write the dimensions

. cubes, mortar cubes. of the tank

.

11. Weighing platform, weighing To measure the weights of Write the weighting

balances the various units. capacities of different

weighing instruments

you have

..

12. Cube moulds, mortar moulds, To cast the testing samples Write the sizes of the

for compressive strength various moulds

..

13. Rebound Hammer Test Non destructive Testing Write the name of

equipment to find compressive manufacturer and

strength of concrete working principle of

equipment .

14. Ultra sonic Tester Non destructive Testing Write the name of

equipment to find compressive manufacturer and

strength of concrete working principle of

equipment.

15. Le Chatelier mould and water bath To find soundness of cement What is the standard

size of split. State the

temperature setting of

water bath.

16.

17.

18.

Write the names of equipments and their specification other than the equipments listed in above

table at Sr.No.16,17 and 18. Also write the names of manufacturers of equipments / machines.

msbte concrete lab manual-9021

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