Abstract

Results of a 2-yr study of cause-effect relationships involved in roughness of concrete pavements are reported. Data were derived both from analog traces obtained with a profilograph in each wheelpath of randomly selected pavements within hours after placement, and from qualitative observations of placement methods. Construction sampled consisted of 184 sections of one - and - two - lane pavements built under 62 different contracts with seven different form-type finishing machines and three different slip-form pavers. Statistical anal ....etc

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case study on vacuum dewatering concrete in pdf

A high quality concrete floor or pavement requires not only to be level but it should also have high wear resistance, high compressive strength, reduced shrinkage and minimum water permeability.
Vacuum dewatered concrete, popularly know tremix in India, is developed by Tremix, Sweden. It is a system for laying high quality concrete floors with superior cost-effectiveness. The key to the use of this method is the dewatering of concrete by vacuum process. Immediately after placing and compaction, ....etc

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MICROELECTROMECHANICAL SYSTEMS (MEMS)
ABSTRACT
Micromechatronic is the synergistic integration of microelectromechanical systems, electronic technologies and precision mechatronics with high added value.
This field is the study of small mechanical devices and systems .they range in size from a few microns to a few millimeters. This field is called by a wide variety of names in different parts of the world: micro electro mechanical systems (MEMS), micromechanics, Microsystems technology (MST), micro machines .this field ....etc

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Electroosmotic flow (or electro-osmotic flow, often abbreviated EOF; synonymous with electroosmosis orelectroendosmosis) is the motion of liquid induced by an applied potential across a porous material, capillary tube, membrane, microchannel, or any other fluid conduit. Because electroosmotic velocities are independent of conduit size, as long as the electrical double layer is much smaller than the characteristic length scale of the channel, electroosmotic flow is most significant when in small channels. Electroosmotic flow is an essential comp ....etc

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MANUFACTURING THROUGH ELECTRO CHEMICAL MACHINING

ABSTRACT:

The machining of complex shaped designs was difficult earlier, but with the advent of the new machining processes incorporating in it chemical, electrical & mechanical processes manufacturing has redefined itself. This paper intends to deal with one of the revolutionary process called Electro Chemical Machining (ECM).

INTRODUCTION:

Electro chemical machining (ECM) is the controlled removal of metal by anodic dissolution in an ....etc

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Water-cement ratio is detrimental for concrete. We always try to restrict the water-cement ratio in order to achieve higher strength. The chemical reaction of cement with water requires a water-cement ratio of less than 0.38, whereas the adopted water-cement ratio is much more than that mainly because of the requirement of workability. Workability is also important for concrete, so it can be placed in the formwork easily without honeycombing. ....etc

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how to know about vdf iwant to elaborate my seminar topic by getting more information ....etc

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Electro bike
An eco friendly bike


ABSTRACT
Our country is spending and investing a large amount of money for the refining and usage of crude oil. At present 734.08 Million Metric Tonnes of crude oil is consumed annually. About Rs.78,376 crores are utilized for crude oil usage. Major portion of this oil is utilized for automobiles which is a major cause for pollution (Air, Noise). Moreover fossil fuels are depleting and the whole world is in an urge for an alternative and also in the global era the technical diffi ....etc

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SMALL REVERSE OSMOSIS SYSTEM DESIGN

SMALL REVERSE OSMOSIS SYSTEM DESIGN


There are several ways to design a reverse osmosis system to provide a specific water output. The cost of a system to provide a 1-gallon per minute flow can vary from approximately $3000.00 US to about 9,000.00 US and higher. Systems can be sold for less but they will have little flexibility.
In addition to the components listed below, all systems should have a line filter to provide 5-micron water feed and a carbon filter to remove chlorine from the incoming wat ....etc

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