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Compressive strength of concrete is defined as the concrete cube of 150 mm x 150 mm x 150 mm with specified proportion with 28 days curing.
Target mean strength - In order that not more than the specified proportion of test results are likely to fall below the characteristic strength, the concrete mix has to be designed for a somewhat higher target average compressive strength (fck).
__
fck = fck + t * s
where ___
fck is target average compressive strength at 28 days,
fck is a characteristic compressive strength at 28 days and
s standard deviation
t a statistic, depending upon the accepted proportion of low results and the number of tests.
What else can I help you with?
What is the compressive strength of M35 concrete at 14 days?
35N/mm2 the above answer is terrible. at 14 days there is no guarantee of what the strength will be, as strength gain is rapid with pue OP it will tend t be greater than 50% of the target characteristic strength; however, with any pozzolans in the mix (e.g. PFA/GGBA) the strength gain over time is slower and can be espected to achieve greater strengths than that of pure OPC the question is too vague to answer. the mix design is pivotal in calculating strength
What is the difference of a point target and an area target?
Point target is when you are trying to hit a specific point. The area target is when you land within the vicinity of the target.
Difference between second language and target language?
the second language is the language that one learns after ones native language,whereas target the language is the language of translation,situation or sitting in which reader needs to ude the language.
Why does a probe hybridize to a target gene but not to any other unrelated gene?
Complementary base pairing occurs only between the probe and the target gene.
What is difference between Grammar Translation Method- Direct Method and Audio Lingual Method?
Ah, the Grammar Translation Method focuses on translating between native and target languages, like a beautiful dance between two languages. The Direct Method immerses you in the target language, like taking a peaceful stroll through a linguistic garden. And the Audio Lingual Method uses repetition and audio cues to help you learn, like a gentle melody guiding you through language learning. Each method is like a different brushstroke in the painting of language education, each with its own unique beauty.
What is the difference between target and super target?
One is smaller than the other
What is the compressive strength of M10 concrete at 7 days?
For M25 grade concrete the seven days crushing for site condition shall be not less than 67 % of M25, i.e not less than 16.75 N/mm2 But for target strength of M25 for mix design taken i.e for M25 it is 32 and the 7 days strength shall not be less than 22 N/mm2
What is difference between target population and sampled population?
sampled population?
What is the difference between target market and marketing?
A target market is the group of people that marketing efforts are directed towards.
What does the difference between a persons resting and Target rate reflect?
The difference between a person's resting and target heart rate reflects the amount of work the heart must do to meet the increased demands of the body when exercising.
What is difference between Winchester rifle model 75 sporter and target?
Its the length of the barrel. 24 for a sport and 28 for a target.
What is target strength of concrete?
Target strength is the design strength which is determined by whom ever designed mixture of aggregates and the water/cement ratio.
What is the difference between a limitation and a target?
Targets are not subject to Title 31 like limitations are
What is the difference between field target and 3D archery?
Field target archery is when your in a field and your a long distance away from the target and 3D archery is like doing archery inside.
What is an absolute deviation?
An absolute deviation is the difference between a given value and a variate value in statistics, or, in target shooting, the shortest distance between the centre of the target and the point where the projectile hit.
Difference between absorption costing AND target costing?
Target costing is when you have a goal for the project and its costs. Absorption costing is when you need to fix the excess spending.
What is the difference between marginal cost and standard cost?
The main difference between standard cost and marginal cost is that in standard cost a target is set and in marginal cost there is no target set. Marginal cost is the change of the total cost due to the quantity produced.
