- published: 12 Dec 2016
- views: 3305
Concrete is a composite material composed of coarse aggregate bonded together with a fluid cement which hardens over time. Most concretes used are lime-based concretes such as Portland cement concrete or concretes made with other hydraulic cements, such as ciment fondu. . Subscribe: https://www.youtube.com/channel/UC7eMdkXyqdVqwq8NG_uH5eA?sub_confirmation=1
Disclaimer: This video is here for educational purpose & is exclusive property of Portland Cement Association (PCA). You must not reproduce or distribute it without written permission from PCA [http://www.cement.org]. Get a candid look at ten popular, but mistaken ideas that still exist in concrete construction. Using examples, interviews, and demonstrations, this revealing video from the Portland Cement Association exposes and explains the most common misconceptions associated with the cement and concrete industry. The video is designed as an educational training tool for workers of all experience levels. Portland Cement Association © 2005
Prestressed concrete is a method for overcoming concrete's natural weakness in tension. It can be used to produce beams, floors or bridges with a longer span than is practical with ordinary reinforced concrete. Prestressing tendons (generally of high tensile steel cable or rods) are used to provide a clamping load which produces a compressive stress that balances the tensile stress that the concrete compression member would otherwise experience due to a bending load. Traditional reinforced concrete is based on the use of steel reinforcement bars, rebars, inside poured concrete. Video by Elecosoft plc: http://www.eleco.com/
Adrian Brugger, a civil engineer at Columbia's Carleton Laboratory, demonstrates the difference in protection between concrete structures with and without steel reinforcement, in this web exclusive. Subscribe for more from Engineering Disasters and other great HISTORY shows: http://www.youtube.com/subscription_center?add_user=historychannel Find out more about the show on our site: http://www.history.com/shows/engineering-disasters?cmpid=Social_YouTube_EnDisasters Stream full episodes here: http://www.history.com/shows/engineering-disasters/videos?cmpid=Social_YouTube_EnDisastersVid Check out exclusive HISTORY content: Website - http://www.history.com?cmpid=Social_YouTube_HistHome Twitter - https://twitter.com/history Facebook - https://www.facebook.com/History Google+ - https://plus.g...
http://stairs4u.com/glossary/c.htm Click on this link and visit our stairway glossary today. Watch this video to learn more about problems and builders face with concrete stairways. Sometimes all it takes as little more rebar or a little more soil compaction and a little more concrete, to make a stairway that will last for many years. For more information about stair building, visit our website today.
The slump test is a means of assessing the consistency of fresh concrete. It is used, indirectly, as a means of checking that the correct amount of water has been added to the mix. The test is carried out in accordance with BS EN 12350-2, Testing fresh concrete.
The concrete slump test is an empirical test that measures workability of fresh concrete.The test measures consistency of concrete in that specific batch. It is performed to check consistency of freshly made concrete. Consistency refers to the ease with which concrete flows. It is used to indicate degree of wetness.
Honeycombs in concrete are voids found in finished concretes owing largely to poor compaction effort.Low work ability of concrete mix creates honeycombs as well. They shall be treated in a systematic way so that the strength and the durability of concrete structure are not effected.This video presents the introduction,reasons, resulting effects and a systematic remedial measure to treat honeycombs in concrete structures.
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This video show how to efficiently manage the form works during the construction of buildings or structures. WTF aluminum formwork is a rapid paced construction system for forming cast in place concrete structures. WTF provides aluminum formwork for reinforced concrete construction of single and multi-story buildings and enables the walls and slab to be placed monolithically in the same operation. This increases efficiency, and also produces an extraordinarily strong structure with excellent concrete finish. Video Source: Wall-Ties & Forms, Inc Visit their official website: http://www.wallties.com
Grades of Concrete In This channel You can Learn about Civil Engineering Update Videos which are using generally in civil Engineering. So please subscribe our channel for daily Update Civil Engineering click on this link. You Tube : https://www.youtube.com/channel/UClYS6cDC2GSX0phXTQMxOKg Face Book Page: https://web.facebook.com/engrsamiullahstanikzai/
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