Question

A) EXPLAIN THE FACTORS AFFECTING THE CONCRETE RESISTANCE BY Plotting It.
B) DESCRIBE THE CONDUCT OF THE CONCRETE UNDER REPEATABLE LOADS.
C) TENSION (SHORT) FROM THE PRESSURE TENSION APPLIED IN A DRY ENVIRONMENT - DESCRIBE EVERY STAGE BY MEASURING THE TIME GRAPH (CHAPTER-SHRINKING EVEN)

Answer 1

The answers to these questions are given in following image:

Concrete strength are affected following factors. a) Quality of raw material, ie cement Strength increasing content, the strength is increasing WIC ratio cement with Const workabining Cement Cement content Content 5) Water Cement ratio strength increasing water-cement ratio decreases the strength Q Water/ cement Yatis . a) Time - Tempreture Strength of concrete other factors ars d). age of concrete e) Compaction of concrete f) curing etc. to of concrete Cummulative Time- Tempreture ABI Load Test Method is a way evaluate Shitete Strength of concrete · Оие sp hem is physical load test, in which the whole spanne es distributed with arrangement of test loads. Loads are applied to those locations Where the deflection is Suspected Load combinations (largest of them will be taken) ") 1.15D +1:50. +0.4 (Lyol Sor R ) - De !!) 1:15D + Dog L + 105 (OL S OZ R) - De Ly: Rock ! S Snow 111) 1:30.- De R: Racinis De: Dead load (ready acting) at D: Dead load L: Live 1 KOMEN

la wet Strength --Dry It is a graph snowing wet and dry conditions. It is found that, there is no increament in Strength in dry condition throughout the years, whereas, in wet environment and an increament en strengthe res noticeable. Age (years) concrete which has So, th As the Tension acts on been in dry condition is more likely to fail first as wetted one compared to Most cured compressie Strength in air (7 days) in air (3 days) in air (whole time) ។ 25 Age, days Strength gained big :- by concrete with Some data observed age regarding this graph Age Strength gained 16% 40% Iday 3 days 7days 14 days 28 days 65% 90% → After 28th day, 99% et ses concrete gained its strengru upto 99 % , Therefore we use this strengen value as fek Lultimate Ifce value compressive M20 (comercle) 2:20 MPa Strength M25 [ concrete) class 25 m la

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