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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.
Define Hydraulic tools for underwater inspection of bridge? Hydraulic tools involve grinders, rotary brushes and scrubbers. The benefits of hydraulic tools are the same as thos
Define Alkali Aggregate Reaction - Chemical deterioration? Sometimes high alkali cement reacts with minerals in certain aggregates and forms expansive compounds resulting into
Explain the term - Loss of Prestress At the transfer stage, tendons produce compressive stresses in concrete. Sooner or later, the magnitude of these stresses experiences a re
A retaining wall 9 m high retains granular fill weighing 18 kN/m 3 with level surface. The active thrust on the wall is 180 kN per metre length of the wall. The height of the wall
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What you need to do in my assignment only for the calculation part for project Task CalculateSG A: Ground Level, SG B: First Level, SG C: Second > Level, SG D: Third Level, and Su
Question Would a concrete structure be entirely free of expansion joints and contraction ? Answer Consider that concrete structure is not subject to problem of disparity settlem
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