What is Cube test & How to make cube test report || By Civil Guruji
#CivilPracticalSiteTraining #CivilGuruji #CivilEngineersTrainingInstitute
Like Share & Subscribe
Book Your Seat, Limited Seat Left
Registration Open Call :- 9111001234
Big Surprise for Civil Engineers | Live at 9:00 pm
Practical Training Detail:- • Practical Site Trainin...
Register Now and Pay Later:- www.civilguruj...
Download Details:- tiny.cc/Downloa...
Branch Address :
1. DELHI - NCR
Civil Guruji - 25, gate no. 1,
behind kailash hospital
knowledge park -1 Greater noida
(201308)
2. BHOPAL
Civil Guruji :- at Hind convent school
Naveen Nagar, Bhopal, Madhya
Pradesh 462010
3. LUCKNOW
Civil Guruji :- at Prayag public
school Sandaulli Umarpur ,Near
Juggaur railway station road,
Lucknow 225003
About This Video
In this video
Procedure for Concrete Cube Test Compressive Strength of Concrete -Cube Test, Procedure, Results
Remove the specimen from the water after specified curing time and wipe out excess water from the surface.
Take the dimension of the specimen to the nearest 0.2m
Clean the bearing surface of the testing machine
Place the specimen in the machine in such a manner that the load shall be applied to the opposite sides of the cube cast.
Align the specimen centrally on the base plate of the machine.
Rotate the movable portion gently by hand so that it touches the top surface of the specimen.
The compressive strength of the concrete cube test provides an idea about all the characteristics of concrete. By this single test one judge that whether Concreting has been done properly or not. Concrete compressive strength for general construction varies from 15 MPa (2200 psi) to 30 MPa (4400 psi) and higher in commercial and industrial structures.
Compressive strength of concrete depends on many factors such as water-cement ratio, cement strength, quality of concrete material, quality control during the production of concrete, etc.
Test for compressive strength is carried out either on a cube or cylinder. Various standard codes recommend a concrete cylinder or concrete cube as the standard specimen for the test. American Society for Testing Materials ASTM C39/C39M provides Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.
Compressive strength is the ability of material or structure to carry the loads on its surface without any crack or deflection. A material under compression tends to reduce the size, while in tension, size elongates.
Compressive strength of concrete - cube test procedure & result at 7 days & 28 days of curing, hi guys in this article we know about compressive strength of different grade of concrete concrete at 7 days, 14 days and 28days of curing and compressive strength test of concrete cube.
What is Compressive strength? Compressive strength is the capacity of material or structure to resist or withstand under compressive load. The Compressive strength is determined by the ability of the concrete material to resist failure in the form cracks and fissure. The maximum load at which the specimen breaks is taken as a compressive load.
n compressive strength test of concrete cube the push force applied on the both faces of concrete specimen and the maximum compression that concrete bears without failure is noted.
compressive Force acting on concrete testing specimen helps us to majorly focus on the Compressive strength of concrete because it helps us to quantify the ability of concrete to resists Compressive stresses among structures where-as other stresses such as axial stresses and tensile stresses are catered by reinforcement and other means.
ALSO READ: COMPRESSIVE STRENGTH OF CEMENT
As we know compressive strength is measured by compressive strength test machine (CTM). Compressive strength is defined as ratio of compressive load applied by CTM machine on concrete cube or cylinder to cross sectional surface area of concrete cube. Compressive strength is represented by F which is equal to F = P/A, where F = compressive strength ,P= total load applied by CTM machine & A = cross sectional surface area.
the cubes are generally tested at 7 & 28 days unless specific early tests are required, for example to remove a concrete shutter safely prior to 7 days. Usually 1 cube will be tested at 7 days and 2 cubes at 28 days, however this may vary depending of the requirements, check the design first. The cubes are removed from the curing tank, dried and grit removed. The cubes are tested using a calibrated compression machine. This can be carried out internally by competent personnel or by a certified test house
The cubes are tested on the face perpendicular to the casting face. The compression machine exerts a constant progressing force on the cubes till they fail, the rate of loading is 0.6 ± 0.2 M/Pas (N/mm²/s). The reading at failure is the maximum compressive strength.
7 сен 2024