What is Cube test & How to make cube test report || By Civil Guruji
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- เผยแพร่เมื่อ 11 เม.ย. 2021
- What is Cube test & How to make cube test report || By Civil Guruji
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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.
Very informative video
Please keep upload this type of video 🙏👍
Nice
सरकारी कार्य-काजों में इसका कोई महत्व नहीं है। केवल कागज़ होना चाहिए यानि,"काम हो कचड़ा, मगर पेपर हो तगड़ा।"
Ye ek dam sahi baat he
Madhu ji but knowledge बहुत बड़ी h jo civil गुरु जी dete hai
Sahi bola
Superb guruji
Excellent 👏👍
Super sir ji best👍👍👍👍
thank u
Very nice sir
Great sir
Pls tell us about polymer modified concrete cube testing
great
Sir 1st sample ka 7 days test kaha gaya Direct 28 days
Very nice video
How to calculate canal top widght if slope gradiant given 1:2:1
Aapka academy West Bengal mein hai kya.
😉😉😉
Density kon ee code me likha hai
Guruji 1 sample = 6 cube
How can test m 30and35
Sir 5mcube means kya slabs ka area
mcube ya concrete machine ka area
Sir eska excel sheet milsakta he ky plzz provide us we are great full to uuu.......
Moisture meter kaise check karte han
Sir individual test result ke bare me aapne nhi bataya
How to find density
kya korona mai bhee trning chalu rahaiee
What happen in test result ,when concrete block size is 150x150x130ht..??🤔
Kitne din me hai ye
marvelous.good.but last 4 M 250 specimen test take fck +3 , instead of fck+4. sir please make additional video on the same topic but individual cube strength tolerance value and 4 non overlaping is what? sir, please tell why M 25 grade concrete value or any grade concrete cr.strength value should be more than its grade.i.e M 25- value 29 not 25.why? please explain.
Table 8 Is code 456
M-20 ke liye karna
Sir agar fck +4 ye 3
Ye phir fck +0.825*SD karte hai 28 days cube strength ke lie to phir
Fck +1.65*SD Kab lia jata hai
1 sample = 6 cube
50 m3 concrete k liye kitna cube cast krna hoga ?
15
Meri pipe ki factory hai bhai mujhe kaise pta chalega ki mai kitne quibic meter ki casting kr rha hu
It's very easy to find.first of alll u have to know the value lengh breadth and thickness of concrete then u will miltyply length*Breadth *thickness
Sir ye cube test kyun kiya jata hai
Aur result janne ke baad kya karna hota hai
Bahut confusing hai plz solve kijiye
1 sample = 6 cube
1 specimen= 1 cube
1 group = 4 sample
1sample -3cube in video which is right?
Yes@@numunulu
1 sample = 6 cube hota hai
one sample = 3 cubes
९
1 sample= 3 cube
Sir clean nahi dikh rha hai
45 samjh nhi aaya
Ye sab bakwas hai, cube Pani me 28 days rahate hai ,lekin site pe itna curing hota nahi , agar ham kohi column casting karte hai aur usko cube bharte hai aur usko 28 days Pani me rakhate hai lekin ham column thoda 28 days Pani me rakhate hai. Esiliye cube kabhi fail hota nahi bahot Kam fail hota hai ,sirf ye kagj par hai
Sir cube test cops 15000 ka lia usme nhi hy
Very nice sir
Nice
Sir cube test cops 15000 ka lia usme nhi hy