Theory of Time 2024 (Universal Theory for Everything)
COMPRESSIVE STRENGTH TEST OF DIFFERENT CEMENTS.pptx
1. RAJKIYA ENGINEERING COLLEGE KANNAUJ
COMPRESSIVE STRENGTH TEST OF DIFFERENT CEMENTS
SUBMITTED BY- RANJIT KUMAR (2008390000051)
RAJNEESH KUMAR MAURYA (2008390000050)
DEPARTMENT OF CIVIL ENGINEERING
RAJKIYA ENGINEERING COLLEGE
KANNAUJ-209732
Under the supervision
Of
Mr. Rishabh Kashyap
Mr. Mukul Saxena
2. INTRODUCTION
● The compressive strength is one of important properties of cement. Compressive strength test,
mechanical test measuring the maximum amount of compressive load a material can bear before
fracturing. The test piece, usually in the form of a cube, prism or cylinder, is compressed between the
platens of a compression-testing machine by a gradually applied load.
3. Continued….
The compressive strength test of cement is done because, with an
increase in compressive strength of cement strengths such
as flexural strength, resistance to abrasion, and so on also
increases.
With one test we can determine various aspects of cement and can
decide the suitable types of cement for the construction site.
4. Factors Affect the Compressive Strength of Cement
Water Cement Ratio
Cement Sand Ratio
Type and grade of Sand
Manner of Mixing
Shape and Size of the Specimen
Curing Condition
Rate of Loading
5. Compressive Testing Machine
Compression test machines are universal testing
machines specially configured to evaluate static
compressive strength characteristics of materials,
products, and components.
These tests are typically conducted by applying
compressive pressure to a test specimen using
platens or specialized fixtures with a testing
machine that produces compressive loads.
6. OBJECTIVE
●The broad objective of the project was set to study various known
brands of cement available in market w.r.t. the strength development
of cement prepared by their use.
● To determine the compressive strength of different types of
cement.
7. FLOW CHART
Designing of Cement Mixture
Preparing Materials and mixing Process
Curing
Cube Test
8. METHODOLOGY
The ratio of cement and sand that should be taken to carry out the test should be 1:3.
Let us take 200 gm of cement, then 600 gm of sand should be taken.
They should be mixed thoroughly for 1 minute.
Then the calculation of water required to make a standard consistency is calculated
using the formula:
Where P is the percentage of water required for producing a paste of standard consistency.
9. Continued…
Then we have P=30 for Cement. Putting the value of P
in the above equation, we get the amount of water = 84
gm.
84 gm of water is added to the dry mixture and mixed
properly for three minutes.
The cube mould is assembled and placed on the table of
the vibrating machine.
Then the mould oil is applied in the mould and the mortar
is poured in the mould. The mould is then prodded with a
rod.
Then vibration is applied in the rate of 12000 ± 400 per
minute.
10. Continued…
After 10 minutes, the mould together with the base plate is removed
from the machine and the top surface is finished levelling up with the
help of a trowel.
Now, the above process is repeated for the next 9 cubes.
11. Continued…
After 24hrs, open the moulds and immerse the concrete
cubes in a water basin for 3 days, 7 days or 28 days.
12. Continued…
The cubes are placed in the compression testing machine
Carefully centre the cube on the lower platen and ensure that the
load will be applied to two opposite cast faces of the cube.
Without shock, apply and increase the load continuously at a
nominal rate within the range of (0.2 N/mm2.s to 0.4 N/mm2.s
or 35 N/mm².min) until no greater load can be sustained.
The load at which the cube is crushed is noted.
The average compressive strength of three cubes is the final
compressive strength of the cement.
Then compressive strength for each cube on their respective test
day is calculated using the formula:
13. COMPRESSIVE STRENGTH OF BIRLA UTTAM CEMENT
AGE OF CUBES (In Days) COMPRESSIVE STRENGTH in MPa
3 32.8
7 43.2
28 63.7
14. COMPRESSIVE STRENGTH OF AMBUJA CEMENT
AGE OF CUBES (In Days) COMPRESSIVE STRENGTH in MPa
3 29.4
7 38.8
28 49.3
15. COMPRESSIVE STRENGTH OF ULTRA TECH CEMENT
AGE OF CUBES (In Days) COMPRESSIVE STRENGTH in MPa
3 38.6
7 50.8
28 71.6
16. COMPRESSIVE STRENGTH OF ACC CEMENT
AGE OF CUBES (In Days) COMPRESSIVE STRENGTH in MPa
3 25.7
7 35.3
28 50.1
17. PRECAUTION
The temperature of the room and cube should be maintained 27±2ºC.
The water used for curing should be changed every 7 days.
The cube should not be dried before the completion of the
compressive strength test.
If the mixture of cement, sand and water does not obtain uniform
colour within 4 minutes of mixing, then the mixture should be
discarded and the operation should be started from the start.
Compressive strength depends upon the proportion and properties of
raw materials used. So, the raw materials should be selected
carefully.
18. CONCLUSION
Thus we find out that the compressive strength of Ultra Tech
Cement is greater than other three cements.
Hence we find that Ultra Tech Cement is better than Birla
Uttam, Acc, Ambuja cement in comparison of compressive
strength.
