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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. Show the Properties of Elastomer ? Though elastomeric bearings offer a number of advantages as compared to steel bearings, many failures have been reported pertaining to the
Using Matlab/ Simulink software, verify the heating requirement (kW) for the building because of air infiltration and natural ventilation. Note that this needs you to estimate air
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
Addition of water to bored piles In water bearing ground, some water head (about 1 m) above the existing ground water table is sustained to stabilize the bore at the time of e
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Movement accommodation factor is normally specified by manufacturers of joint sealants for designers to design dimension of joints. It is stated as the total movement that a joint
Question What are key functions of changed components of paint? Answer For regular paint application, there are largely three key components of paint, namely primer, u
Incoming water contains 2.5 mg/L as a substance of natural alkalinity (HCO3-). The flow rate is 9.5 ML/day). (a) What feed rate is required if the alum dose is 7 mg/L and is avail
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