- published: 14 May 2015
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HTML element for pre-formatted textConcrete is a composite material composed of aggregate bonded together with a fluid cement which hardens over time. Most use of the term "concrete" refers to Portland cement concrete or to concretes made with other hydraulic cements, such as ciment fondu. However, road surfaces are also a type of concrete, "asphaltic concrete", where the cement material is bitumen.
In Portland cement concrete (and other hydraulic cement concretes), when the aggregate is mixed together with the dry cement and water, they form a fluid mass that is easily molded into shape. The cement reacts chemically with the water and other ingredients to form a hard matrix which binds all the materials together into a durable stone-like material that has many uses. Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical properties of the wet mix or the finished material. Most concrete is poured with reinforcing materials (such as rebar) embedded to provide tensile strength, yielding reinforced concrete.
Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and lifted into place. In contrast, standard concrete is poured into site-specific forms and cured on site. Precast stone is distinguished from precast concrete by using a fine aggregate in the mixture, so the final product approaches the appearance of naturally occurring rock or stone.
By producing precast concrete in a controlled environment (typically referred to as a precast plant), the precast concrete is afforded the opportunity to properly cure and be closely monitored by plant employees. Utilizing a Precast Concrete system offers many potential advantages over site casting of concrete. The production process for Precast Concrete is performed on ground level, which helps with safety throughout a project. There is a greater control of the quality of materials and workmanship in a precast plant rather than on a construction site. Financially, the forms used in a precast plant may be reused hundreds to thousands of times before they have to be replaced, which allow cost of formwork per unit to be lower than for site-cast production.
A mix of limestone gravel, minerals and additives are mixed into a slurry. After a test sample is hardened and tested, workers pour it into pre-made molds. | http://www.sciencechannel.com/tv-shows/how-its-made/ Watch full episodes: http://bit.ly/HowItsMadeFullEpisodes Subscribe to Science Channel: http://www.youtube.com/subscription_center?add_user=sciencechannel Check out SCI2 for infinitely awesome science videos. Every day. http://bit.ly/SCI2YT Download the TestTube app: http://testu.be/1ndmmMq
Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment. This allow maximum quality control over the process and results in a consistently durable, high quality product. From here it is transported to the construction site and lifted into place.
here show the precast concrete fencing panels making easy diy
The process of making pre-cast concrete capstones for a small wall. Narrated by CG voices.
Learn various construction stages of precast wall through this video.
Your guide to buying your dream home, Property It's Hot checks out the latest technology trend in the industry. We visit a developing township in NCR where Pre-Cast technology is being used to deliver 2BHK homes in just 24 hours. Also covered on the show, smart tips to design your interiors on a small budget. And how to create a lush green terrace garden in your home. Watch full show: http://www.ndtv.com/video/player/the-property-show/pre-cast-tech-delivering-2bhk-homes-in-24-hours/368472?yt
We are making a precast concrete hearth sample for the Stringers Ridge project. I thought I would take you along to show you have we make our samples and the finished product. See part 2 here https://www.youtube.com/watch?v=zNqjM-alS5k Music: The music "The Artisan Way" was written and performed for my channel by my son, Barret. His channel is here http://www.youtube.com/user/insanedrummer89
http://www.oldcastleprecast.com NPCA Virtual Tour of US Concrete, a state of the art precast manufacturing facility acquired by Oldcastle Precast in August 2012 For more information, contact us! http://www.oldcastleprecast.com 1-888-965-3227 National Sales & Marketing Office 7921 Southpark Plaza Littleton, CO 80120 USA
Concrete mix - 1:2:3 parts by dry volume - one part portland cement, two parts sand, three parts coarse aggregate. Use premixed concrete products if you are not confident in your ability to measure the basic materials.Add water carefully. Use the minimum amount of water possible while still keeping the mixture workable. The less water used, the stronger the dried, finishing product will be. As an option you can use concrete water reducer. Water reducer available in our web store. Finished product image : http://globmarble.com/online-store/images/detailed/1/IMG_2185.jpg
An illustration of prestressed concrete production by Milbury Systems an Eleco Company. Prestressed concrete is a method of overcoming concrete's natural weaknesses. It can be used to produced longer spans than is practical with standard reinforced concrete. Milbury Systems manufactures a number of precast and prestressed products.
Surecrete Design Products - Xtreme Series Precast - Bending Concrete Into your Design Ideas. http://www.surecretedesign.com/xs-precast/ More Uses of XS-Precast: Residential Kitchen Counters Concrete Coffee Tables Dining Room & Breakfast Tables Bath Vanity Tops Integrated Concrete Kitchen Sinks Bathroom Sinks Stand-alone bath tubs Concrete Planters Shower Wall Panels Custom Floor Tiles Commercial Counters Service Industry Bars Architectural Facades Other Concrete Design Ideas: http://www.surecretedesign.com/concrete-ideas/casting/
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We provide the machine for producing precast concrete products . Can reinforcing different nos steel wires according to your requirement . Contact us: hnvictory@outlook.com Skype: wdlmachine
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This month we catch up with the prima ballerinas of construction, our precast concrete crew, who’ve been casting some of the biggest beams and cross heads in the country! Rest assured, for a production of this scale, you’ve got to have big muscles! For the full story see www.expresslane.buzzit.co.nz
Two Day Seminar: Mold Making for Production Casting of Concrete. Find upcoming events and register today at https://www.smooth-on.com/page/concrete-seminars/ Intensive 2 day training will focus on topics associated with making molds for casting concrete. Slides, videos, group discussion and hands-on demonstration will introduce you to the basics in an easy-to-understand format including: Optimal Concrete Production Layout Choosing the Right Mold Rubber Mixing Mold Rubber The Right Way Controlling Concrete Surface Finishing Mold Design and Construction Sealing Agent & Release Agent Ad Mix Design Options Minimizing Color Variation Polymer Modifiers for Concrete --- Make It Now! with Smooth-On https://www.smooth-on.com/ https://www.facebook.com/SmoothOn https://twitter.com/SmoothOn https:...
How to make Precast Concrete Board / precast sign board with fiber mould for this you check this video carefully. We have all kinds of fiber moulds for RCC chair. Concrete Sing Board made with our fine Quality polymer Moulds. RCC bench mould manufacturing process. RCC Tree Guard manufacturing process. precast compound wall manufacturing process and precast compound wall manufacturing machine. Railway Platform Chair Mould in FRP available with http://www.srikrishnaplasto.com/. precast boundary wall mould and precast boundary wall making Machine. precast Manhole Covers & Frames making machines. RCC Road Indicator making Moulds. kerb stones making Machines and kerb stones making Moulds. we are leading precast boundary wall machine in India. srikrishnaplasto.com a leading precast compoun...
http://www.precastconcretehomes.com.au This video shows the construction method used by Precast Concrete Homes. It demonstrates the efficiency of building with precast concrete panels and how a typical 4 bedroom home can be completed in 8 weeks. Compared to brick veneer this is up to 16 weeks faster meaning owners get into their homes faster and builders can complete more projects each year. The concrete walls provides better thermal and acoustic insulation also while being extremely strong. They are extremely resistant to cyclones, floods, earthquakes and ground movements. They are a great choice for bushfire prone areas as they exceed the Australian Bushfire Standard (AS3959) for the highest “Flame Zone” category. http://precastconcretehomes.com.au/advantages/ Precast Concrete Homes pa...
In this video, we get to understand the various kinds of connections which are possible when precast concrete elements are used. The jointing determines the success of the structural system. Connection between: 1) Column to Column 2) Column to Beam 3) Beam to Floor Slab
Precast Hollow Core Concrete Planks installed at our House Construction site in Lawrenceville, NJ on July 28, 2014 These 8" & 6" thick, 4' Wide, various Beam to Wall, Beam to Beam, Wall to Wall span lengths prestressed, prefabricated hollow-core concrete slab parts were furnished & installed by Say-Core / SayCore, Inc. of Portage, PA . Orange Nikon AW110 DSCN2039, 41, 45, 53, 54, 54, 76 .
With the precast concrete industry constantly growing, companies are continually hiring new employees. Ensuring those employees are able to get up to speed quickly plus work safely and effectively can improve teamwork, reduce mistakes and help new hires quickly become productive employees. This course is intended for those who are new to precasting and includes an introduction to basic concepts, including terminology, operations and equipment as well as a review of key safety concepts. More precast concrete webinars are available on the NPCA website. Visit http://precast.org/education/classes/webinars for more information.
Creating a rubber mold from some 200 year old floor boards, casting, striping, staining, and sealing a table. Purchase the rubber to make this here: www.trinic.us 800-475-1975 GFRC, glass fiber reinforced concrete
How to manufactured Concrete pipes | Discovery technology #1 We will have more knowledge when watching this video, it is quite obvious about the methods of . Poona Concrete using world class automatic machinery plant. We provide comprehensive precast concrete pipes, rcc pipes, Vertical pipes manufacturer in India . A mix of limestone gravel, minerals and additives are mixed into a slurry. After a test sample is hardened and tested, workers pour it into pre-made molds. Manufacturing process of roof tiles - Discovery technology It's production lines from Japan, it delivers high productivity due to highly automated * Information: .
Placement of a precast panel into place for a zone substation.
វីដេអូបេតុងប្រេកុងត្រាំង Prestressed Concrete Design 1
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The new Documentary reveals how Ancient Egyptians built the pyramids using man-made stones, which look exactly like natural rocks. The limestone blocks were cast in situ, employing an advanced technology that was later lost, leaving a puzzle hidden for thousands of years inside the pyramid stones. This theory undoubtedly shed an amazing new light on what really happened in Ancient Egypt in that remote era. As the documentary shows, it is a theory that gives indigestion to mainstream archaeologists. Namely, that some of the immense blocks of the Great Pyramids of Egypt might have been cast from synthetic material - the world's first concrete - not just carved whole from quarries and lugged into place by armies of toilers. Such an innovation would have saved millions of man-hours of grunti...
This video is the pre casting as in we began talking ab how we do everything and well we actually made our first , so its a pre casting special , later on we will release mini videos Enjoy
Building in Northern England 1950's Cumberland,Village of Severam? House on hill. Large building projects. Civil engineering. Coal reduction mill in South Wales under construction. Long views of construction site - men with wheelbarrows. Reinforced concrete. Steel cage built for cement. Concrete pumped by pipeline. Laing lorries. Men shovel concrete. Factory in Darlington of Patents and Baldwin? Is a knitting wool factory. Statistics about building. Brabazon airliner and one and three quarter mile long runway at Filton,Bristol. Headquarters of BOAC on A4 (Great West Road). Middlesex County Hospital, Shenley in Hertfordshire (opened 1934) Carrington's Coppice, Derbyshire opencast coal mine. Big diggers and shovels. Power station in Carlisle. Plymouth - generating station for British...
Watch this video to learn the basics of Glass Fiber Reinforced Concrete (GFRC). We explain the different components, mix designs and the proper techniques needed to create high-quality GFRC. The benefits of Forton® VF-774 are also explained in great detail. Learn about the Precast/Prestressed Concrete Institute's standards for GFRC and how to apply them to your project. Smooth-On Concrete page https://www.smooth-on.com/concrete Forton® VF-774 webpage: https://www.smooth-on.com/products/forton-vf-774/ Forton® VF-774 Technical Bulletin: https://www.smooth-on.com/tb/files/Forton_VF_774_TB.pdf Read the 20 Year Durability Paper: https://www.smooth-on.com/tb/files/20_Year_Durability_Paper.pdf --- Make It Now! with Smooth-On https://www.smooth-on.com/ https://www.facebook.com/SmoothOn http...
This is a video recording of our March 19, 2014 webinar on the topic of polymer concrete. Designed to familiarize engineering and maintenance professionals with the technology of polymer concrete products, this webinar also takes a close look at Five Star Products' line of Rapid Surface Repair PF-60. Special guest hosted by Peter Weykamp, PE, retired NYSDOT.
"From PRESSS Research to PreWEC" is the eighth in the Research to Practice Webinar Series co-produced by the Network for Earthquake Engineering Simulation (NEES) and the Earthquake Engineering Research Institute (EERI). The PREcast Seismic Structural System program (PRESSS), completed about a decade ago, introduced the use of unbonded post-tensioned walls for seismic-resistant design. Since that time, several research advancements have been made and codification of unbonded post-tensioned walls has been completed. To improve cost-effectiveness and resiliency, the PREcast wall with end columns (PreWEC) was subsequently introduced. Today, an investigation of PreWEC—focusing on understanding the influence of various damping components and interaction between rocking walls and surrounding bui...
Marty McIntyre of PCI speaks to Eastern Illinois students about the PreCast Concrete Industry and the work process involved.
Armtec Infrastructure Inc. specializes in the manufacturing and installation of Prestressed Hollowcore Slab Construction products. This informative webinar video provides information on Armtec Infrastructure Inc and a complete overview of Hollow Core Slab applications in Canada. It reviews the basics of Hollowcore as well as some new ideas adapting to environmental needs (LEED) and energy efficiency. Hollowcore attributes include versatility, creation of long spans and open spaces, fast track construction, control of flexural cracking, zero tension possible in bottom flange, minimal site labour, and low long-term maintenance costs or, in short, VOS. This tutorial includes case examples from several projects completed in 2012 & 2013 in Western Canada. A Focus on long clear span buildings,...
http://precast.org/precast-possibilities/safety/ The National Precast Concrete Association's Back to Basic Safety Video. Safety is the most important thing in any industry including the Precast Concrete Industry. Please visit http://precast.org/precast-possibilities/safety/ for more information.
Sidney Freedman, Director, Architectural Precast Services, PCI, Chicago, IL Conservation of concrete has become more important as some of the world's most significant concrete structures continue to age and deteriorate. This session will discuss innovations in conservation of historic concrete and will review approaches, repair options, and techniques for repair of historic concrete structures, some dating back to the late 1800s.