Ground Control Polished Concrete

Concrete Slab Floors - Your Home Design Guide - Home Page
Concrete slabs have a long lifespan. Control of cracking is important. Polished concrete is a term which covers two grey concrete is ground back by several millimetres to expose whatever aggregate exists in the slab. ... Retrieve Content

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Tivity (gloss) for colored concrete and ground and polished concrete floors of all types. The treated and finished concrete will provide a surface that is nontoxic, easy-to-maintain, and Since no control is exercised over product use, L.

Scientist Discovers New Use for Industrial Fly Ash

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A new coal waste product is being mixed with magnesium and aluminum to create a lightweight, yet strong substitute for heavy metal products, like certain car parts. Dr. Nikhil Gupta from New York University's Polytechnic Institute believes the material could also be used to reduce the weight of everyday structures like park benches and lamp posts.

Coal-firing plants which burn coal to generate electricity produce a residue waste material called fly ash.

The dust-like substance is China's single biggest source of solid industrial waste.

Dr. Nikhil Gupta is Associate Professor of Mechanical and Aerospace Engineering at the Polytechnic Institute of New York University in Brooklyn.

He has found a way to use fly ash with metals like aluminum or magnesium to make a material that can be used in a number of applications, including the manufacture of automobile parts.

Gupta says fly ash particles are ceramic-based and some are hollow and almost geometrically round.

[Dr. Nikhil Gupta, Assoc. Professor, Mechanical and Aerospace Engineering, NYU Polytechnic Institute]:
"We can mix fly ash in metal, just like a cake mix. And then we can use this mixture to cast a part that we need. So it can be a small engine cover or it can be a sump cover or an engine mount."

One of the most positive properties of the material is that it is lightweight, but just as strong as aluminum or magnesium products.

Gupta has carried out stringent laboratory high speed compression tests on the metal-fly ash mix to see how it withstands the equivalent pressure of a 60 mile per hour car accident.

There are several benefits to the science.

Firstly, fly ash, a waste product which would otherwise lie in landfills, is being used.

Plus, using less metal reduces pollution created by generating the primary metals.

And if vehicle structures can become lighter, they will consume less fuel and very importantly, the technology will save money for industries.

[Dr. Nikhil Gupta, Assoc. Professor, Mechanical and Aerospace Engineering, NYU Polytechnic Institute]:
"The break-up is very simple. Aluminum is somewhere close to $2 a pound right now and fly ash is a waste material so it's available for free. So, if you're replacing 40 percent of aluminum with something which is almost free are extremely cheap, then the final product, or the component is actually lower in cost."

Fly ash is currently used to make some construction materials, and this new compound could add a new dimension to utilizing waste.

As a by-product of coal combustion, fly ash contains several environmental toxins such as arsenic, cadmium and lead.

Each year, millions of tons of it end up in landfills and ash ponds.

Dr. Gupta says that if just some of that pollutant can be put to good use, it will benefit several sectors of the economy and the environment.

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Ground type construction, they are equally applicable to suspended slabs. Control of the concrete mix itself – for maximum durability, aesthetic appeal Polished concrete can be used as a topping, ... Fetch Content

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Effort in positioning polished concrete as a reflectance, mold control, etc.). It is equally use of concrete that contains ground glass (post-consumer), fly ash (pre-consumer) or other inert recycled material. Concrete that ... Content Retrieval

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A diamond polished concrete floor is not like terrazzo: 08a Standard Test Methods for Water Vapor Retarders Used in Contact with Earth Under Concrete Slabs, on Walls, or as Ground Cover. CPAA recommends evaporation control and wet curing concrete slabs according to ACI 308R-01: ... Read Full Source

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Ground Face Polished concrete masonry units. CERTIFICATION QUALITY CONTROL DURING INSTALLATION  Provide adequate lighting for masonry work for even illumination during installation.  Make all cuts with motor driven masonry saw, using a diamond blade. ... Retrieve Doc

SECTION 02750 - INTEGRALLY COLORED CONCRETE
Include samples of control, construction, and expansion joints in sample panels. [Mockup] [Field sample] shall be produced by the individual workers who will perform the work for the Project. 5. Ground and Polished Concrete Surface: ... Doc Viewer

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Concrete mix design and control of same. Trial batching. Subgrade and subbase preparation. Placement procedures for: Form work.

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Concrete mix design and control of same. Trial batching. Sub grade and sub base preparation. Placement procedures for: Form work. Reinforcing. Concrete placement methods. Concrete finishing procedures. Concrete to be Ground & Polished: not less than 4 inch slump. ... Return Document