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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.
Maintenance of Bituminous Roads: The common defects noticed in a bituminous road are : potholes cracks rutting corrugations shoving stripping and l
The discharge of water collected from a constant head permeameter in a period of 15 minutes is 500 ml. The internal diameter of the permeameter is 5 cm and the measured difference
1. 130,000-yd 3 of banked soil from a borrow pit is stockpiled before being trucked to the jobsite. The soil has 18% swell and shrinkage of 8%. The final volume of the compacted
Question What is main difference in application of surface-protecting fenders and energy-absorbing fenders ? Answer Surface-protecting fenders are fenders that make
Q. Core-barrel samplers: single tube sampler vs. double tube sampler vs. triple tube sampler Core barrel samplers are initially designed to sample rock. In single tube sampler
Q. Necessity of air valves in pressurized pipelines? Air valves are broadly categorized into two major types: single air valves and double air valves. Single air valve comprise
classification and characterstics of lintels
Side clearance of pipes in trenches From the design point of view, it's predominant to minimize the width of pipe trenches due to thebelow reasons: (i) Higher cost of exca
i want to know the construction details of industrial steel floor?
write buckling and dislodging of brick slip?
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