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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.
Q. Glazed tiles for Construction Material? Glazed tiles are only meant for dadoes of bath room, Toilet and kitchens etc as they have no strength . Normally 8'' x 4'' g
Maximum shear stress: The state of stress at a critical point of a strained solid is given by σ x = 70 kN/mm 2 , σ y = - 50 kN/mm 2 and τ xy = 45 kN/mm 2 . If the strength
Question What are designing considerations for dowel bars in joints of concrete carriageway? Answer Behaviour of dowel bars resembles that of piles in soils subject
Determine the Size and Number of Aeration Basins? For a community of 100,000, determine the size and number of aeration basins in a municipal activated sludge treatment facilit
My team has to construct a swimming pool at the back of the house. It’s interior dimensions are 10M x 3M and 1M at the shallow end and 2.5M at the deep end. The walls and the bas
I am a Civil Engg student. Why CBR Values determined only at 2.5 and 5 mm penetration ?.
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Q. Butt weld – from one side vs from both sides? In the design of butt weld strength, it's normally presumed that its strength is at least equivalent to parent metal. To improv
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