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QuestionDesign of concrete structures, normally most aggregate sizes are adopted with scopes from 10mm to 20mm. Does an increase of most aggregate size advantage structures? AnswerTo answer this query, let's consider the example of a cube. Surface area to volume ratio of a cube is 6/b that b is the length of cube. This implies that surface area to volume ratio reduces with an increase in volume. Then, when size of maximum aggregate is improved, surface area to be soaked by water per unit volume is condensed. Consequently, water requirement of concrete mixes is reduced accordingly so water or cement ratio can be lowered, resulting in a rise in concrete power. Though, increase of aggregate size is also accompanied by effect of reduced contact areas and discontinuities formed by these larger sized particles. In general, for utmost aggregate sizes less than 40mm, effect of lower water requirement could offset drawbacks brought about by discontinuities as recommended by Longman Scientific and Technical in 1987.
The liquid limit of a clay soil is 56% and its plasticity index is 15%. (a) Name the state of consistency is this material at a water content of 45% ? (b) Determine the plas
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Describe 'general shear failure' and 'Local shear failure'. Differentiate among (i) Shallow foundation and deep foundation, (ii) Gross and net bearing capacity, (iii) S
Calculate the Horizontal Distance A surveyor's total station measured slope distance near station 3245+26.35 is recorded as 437.380-m with a zenith angle of 118º 48' 07" and a
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An elastomer is a polymeric substance obtained after vulcanization of rubber. Vulcanization is the process of improving the properties of rubber by heating with sulphur. A normal r
Question Explain components of a typical expansion joint? Answer Dowel bar-This is major component of joint. It serves to guide direction of movement of concrete growth. Therefo
Low Cost Roads Connecting Villages: Problem of Village Connectivity It is estimated that nearly 45 per cent of India's villages are not connected by an all-weather ro
brief detail about ships stresses
natural phenomenon affecting the designs of harbours
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