Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 1 (Q.No. 1)
1.
For quality control of Portland cement, the test essentially done is
Discussion:
67 comments Page 1 of 7.
Bangada Mangisto Livino said:
1 decade ago
Setting time, optimal duration for the best solidification of the cement. Soundness, ability by the cement having maximal withstanding external forces or pressure exerted on to the finished concrete. Tensile strength, its flexibility to accommodate rupturing or cracking. And consistency of the cement to show uniformity, smoothness and upholds in the particles as final concrete.
Muhammad Asif said:
9 years ago
1 - First of all raw material will be as per design (good quality).
2 - Concrete mixing is important.
3 - Slump test.
4 - Water Cement Ratio.
5 - Carry out the machine to place.
6 - Placing and vibrator.
7 - Time sitting.
8 - Curing.
9 - Compression test.
10 - Fall of height.
11 - Cube or cylindrical test.
12 - Consistency.
2 - Concrete mixing is important.
3 - Slump test.
4 - Water Cement Ratio.
5 - Carry out the machine to place.
6 - Placing and vibrator.
7 - Time sitting.
8 - Curing.
9 - Compression test.
10 - Fall of height.
11 - Cube or cylindrical test.
12 - Consistency.
Abdul Qudoos said:
2 years ago
All these tests are necessary for the quality control of cement.
Consistency is required to find the right amount of water.
Initial setting time test deals with hardening and setting of cement, which is necessary for workmen to know.
Consistency is required to find the right amount of water.
Initial setting time test deals with hardening and setting of cement, which is necessary for workmen to know.
(3)
Hemanta Das said:
1 decade ago
Concrete is segregated due to 6 causes:-
1. Mix proportion not good.
2. Water-cement ratio not proper.
3. High work ability.
4. Time of mixing.
5. Storage period of cement.
6. Important of fall of height.
1. Mix proportion not good.
2. Water-cement ratio not proper.
3. High work ability.
4. Time of mixing.
5. Storage period of cement.
6. Important of fall of height.
M.Sajjad Ali said:
1 decade ago
Compressive strength strength of cement is done rather than tensile strength. The compressive strength of OPC on 3rd day, 7th day is important. On 7th day, compressive strength of OPC is 19MPa.
Chandrabose said:
9 years ago
In basic think, cement should have a binding property, so the quality control depends upon the compressive strength only. So, the compression test is enough.
Engr NAMAT said:
3 years ago
OPC stand for ordinary portland cement. Its initial setting time is 30 mint and its final setting time is 1 hour.
OPC means Ordinary Portland Cement.
OPC means Ordinary Portland Cement.
(1)
Jenge Grifins Oloo said:
7 years ago
Concrete plays a major role in all design works, therefore, any important reaction should be brought on board.
Thanks for such clarification.
Thanks for such clarification.
(1)
Gowtham vijay kanuri said:
9 years ago
To prepare concrete with portland cement we must know the characteristic compressive strength within the span of 7days and 28 day curing.
RAGHAVENDRA said:
1 decade ago
Soundness test is carried out to know the increase in volume of concrete after setting. For OPC, the maximum soundness value is 10mm.
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