Transcript: Concrete & reinforced concrete Characteristics of concrete Very variable... Concrete Fire safety http://c-est-pas-sorcier.france3.fr/?page=emission&id_article=367 Long service life Composition of concrete http://www.omafra.gov.on.ca/english/engineer/facts/06-023.htm More... Sources http://www.understanding-cement.com/hydration.html http://www.personal.psu.edu/mjb5643/edsgn100/project4/concrete/curing.html Hydration Introduction http://www.ce.memphis.edu/1101/notes/concrete/section_3_properties.html http://www.enggpedia.com/civil-engineering-encyclopedia/dictionary/engineering-materials Dicalcium silicate : Ca2SiO4 -> C2S = Belite composition - Low ratio: higher strength & durability Water/cement ratio Price http://cnx.org/content/m16447/latest/ Reinforced concrete Cement Concrete = strong in compression weak in tension -> reinforcement http://blog.concretecountertopinstitute.com/?Tag=aggregate Prestressed concrete Projet de structure - I, C. DONEUX, 2011, slides University of Louvain Chemical admixture http://www.lafarge.co.uk/wps/portal/uk/2_2_1-Manufacturing_process http://en.wikipedia.org/wiki/Reinforced_concrete Price http://www.understanding-cement.com/hydration.html fine & coarse 3. Hardening & Cooling = "ability of a concrete to fill the form properly without reducing the concrete's quality" Corrosion and long term performance of concrete in NPP and waste facilities, V. L'HOSTIS, F. FOCT, D. FERON, Cadarache, France NUCPERF 2006 http://civil-engineering-center.blogspot.com/ http://www.hedberglandscape.com/Products/Default.aspx?path=|2|6|81 workability 2. Dormancy Abrams cone http://www.icar.utexas.edu/publications/105/105_1.pdf - 5% minor constituents Portland Cement THE solution = steel http://iti.northwestern.edu/cement/monograph/Monograph5_1.html compressive strength : 30 MPa to 131 MPa http://www.understanding-cement.com/milling.html http://matse1.matse.illinois.edu/concrete/prin.html Beton/concrete, Bauhaus-Universität Weimar Fakultät Gestaltung, 2003 http://www.ashireporter.org/photos/thumbnails/2006_12/crack-pattern.gif http://ciks.cbt.nist.gov/~bentz/ci3005bentzreadonly.pdf production http://www.cptechcenter.org/publications/imcp/tech_summaries/4a%20Hydration%20Basics.pdf - 90% clinker (limestone & clay) 1. tensile strength: 300-700 MPa 2. cohesion steel-concrete 3. coefficient of thermal expansion 4. corrosion resistance Concrete curing http://www.ipcc-nggip.iges.or.jp/public/gp/bgp/3_1_Cement_Production.pdf http://enggpedia.com/civil-engineering-encyclopedia/articles/1586-effects-of-different-properties-of-aggregates-on-concrete video http://www.hillbrothers.com/images/kim-l.jpg Mathematical Modeling of creep and shrinkage of concrete, JOHN WILEY & SONS, Illinois, USA, Nortwestern University Evanston, Bazant (editor) Films http://en.wikipedia.org/wiki/Concrete http://texturezine.com/textures/rock-stone/concrete-textures.html http://www.cement.org/basics/concretebasics_concretebasics.asp plasticizers Water http://www.brighthub.com/engineering/civil/articles/52076.aspx 3. Preparation of the cement Tetracalcium aluminoferrite : Ca3Al2O6 -> C3A Energy effiency Tricalcium aluminate : Ca3Al2O6 -> C3A http://seekingalpha.com/article/91539 Post-tensioned concrete Tricalcium Silicate : Ca3SiO5 -> C3S = Alite compressive/tensile strength C3S http://www.tpub.com/content/construction/14043/css/14043_201.htm 1. Mixing http://www.cmt-ltd.co.uk/concrete-and-mortar-testing.php Books ... Properties of the reinforcement 1. High tensile strain 2. Good bond to the concrete 3. Thermal compatibility 4. Durability in the concrete environment http://www.ce.memphis.edu/1101/notes/concrete/concrete_properties_slides.pdf http://www.tlcsupply.com/services_subpages/waste611.html Hydratation 2. Production of the clinker http://iti.northwestern.edu/cement/monograph/Monograph5_1.html C2S http://www.cement.org/tech/cct_curing.asp http://www.aboutcivil.com/Properties-of-concrete-factors-affecting-them.html http://dc149.4shared.com/doc/jWnddyy_/preview.html http://www.ndt-ed.org/EducationResources/CommunityCollege/Materials/Physical_Chemical/ThermalExpansion.htm C3A Internet http://en.wikipedia.org/wiki/Cement Aggregates http://training.ce.washington.edu/wsdot/Modules/05_mix_design/05-8_body.htm accelerators & retarders http://training.ce.washington.edu/pgi/Modules/03_materials/03-4_body.htm http://people.ce.gatech.edu/~kk92/hyd07.pdf - high ratio: segregation & shrinkage - 5% calcium sulfate (gypsum) http://training.ce.washington.edu/pgi/Modules/03_materials/03-4_body.htm http://www.theconstructioncivil.com/2009/09/watercement-ratio.html Images http://www.fhwa.dot.gov/pavement/pccp/pubs/06004/index.cfm http://torrentz.eu/99e761891220a820b481e94295b5a01abfd563cf http://www.matweb.com/reference/compressivestrength.aspx Béton, J.-F. CAP, 2007, University of Louvain Manuel de calcul de béton armé, Dr. Ir. P. Boerave, institut Gramme - unité construction 1992 http://howtomakestuff.com/2008/09/07/how-to-make-cement/
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Transcript: Concrete Concrete is a composite construction material, composed of cement (commonly Portland cement) , aggregate (generally a coarse aggregate , plus a fine aggregate such as sand), water and air. Topics: Concrete Concrete materials Concrete properties Refernces:CSA,ASTM,ACI Concrete is used to make pavements, pipe, architectural structures, foundations, motorways/roads, bridges/overpasses, parking structures, brick/block walls, footings for gates, fences and poles and even boats. Aggregates Air Cement Water
Transcript: TAMP Levels concrete concrete trowl finishes concrete HAND HELD MIXERS TEXTURES CONCRETE concrete float. Mix Truck!!!! Makes concrete more dense concrete vibrators FINISHES CONCRETE removes air bubbles smooths concrete mixes concrete. darbies ALSO MIXES CONCRETE The Power of Concrete cuts concrete. Tools CONCRETE GRINDER concrete saw!! BUSH HAMMER
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Transcript: Concrete by Niall Hindle Concrete in interior design Advantages of using concrete for stairs Flooring http://flooring.about.com/od/Flooring-Pros-And-Cons/a/An-In-Depth-Look-At-Concrete-Flooring.htm http://www.dezeen.com/2010/07/28/espresso-solo-by-shmuel-linski/ http://www.homedit.com/the-beauty-of-concrete-from-interior-design-to-architecture/ http://freshome.com/2011/11/22/the-trend-for-using-concrete-in-interior-design/ http://www.sciencedirect.com/science/article/pii/S0958946508001212 http://link.springer.com/article/10.1007%2FBF01386855 http://www.concreteconstruction.net/decorative-concrete/forming-concrete-steps.aspx http://www.ccanz.org.nz/images/document/countertop.pdf Concrete is slip resistant which is a valuable property considered when constructing stair cases It is malleable and can be molded and set in to ideally any shape. When creating elaborate designs this is an ideal property. E.g spiral stair case will have many curved sides Concrete also offers sound reduction as it does not carry noise. Therefore it is an idea material to construct stairs from in an interior environment. Counter tops Pros- Concrete is more widely used as a external construction material. However in recent years designers are bringing concrete in to interior design. Concrete has numerous properties that make it ideal for interior space, few materials are as versatile as concrete. It can be molded in to any shape and styled easily from rustic to modern designs. Concrete can be fully customized from the colour, thickness, shape and texture which is very appealing to interior designers. An example of how concrete can effectively be used in a sustainable home design in the form of concrete walls and floors In terms of the pros and cons of concrete in interiors, they differ depending on the actual use of the concrete. Two elements of an interior I have picked up on are concrete flooring and counter tops. Concrete has a higher thermal conductivity of 1.7 W/(m.k) which increasing with the density of the concrete. Higher than most other construction materials Aesthetically pleasing yet functional and durable Concrete is widely used in fire places due to heat retention properties. Pros- Concrete design on a large scale An example of how concrete can be use on a large scale. From outside architecture to interior design of a cottage. Interior use of concrete in fire places Stairs Heat-resistant Very durable if sealed Shapes, edge details, and texture can be fully Customized (i.e. you can add recycled glass or Stone pieces into the mixture) Can be made to look seamless with a filler Bibliography Thanks for listening ... Cons- The misconception of concrete is of a hard, cold, dull and unmanageable construction material. Interior designers are now reviving concrete as a design material. New an innovative ideas to push boundaries and change ideologies. Hardness Uncomfortable Cold Moisture More than a building material it is a medium of self expression Must be sealed to protect it from stains Water and heat damage Bacterial growth Even with sealing moisture or oil can make the counter top look "wet" and sloppy Can be expensive depending on the level of customization required. Concrete is composed of a coarse granular aggregate embedded in a mixture of much finer material cementing and binding the constituent together. Concrete as a building material was firstly exploited on a large scale by the Romans. The greatest example of this is the dome of the Pantheon 126AD. The more modern uses for concrete include building architectural structures, foundation and brick walls, pavements, parking structures, dams and runways. Concrete is more widely associated with the foundation and structural aspect of building construction. However with regards to interior design concrete can be used as a flexible and aesthetically pleasing finish. Concrete exppresso machine by Schmuel Linski Misconceptions In interior design concrete is most commonly used for construction stairs What is concrete..... Pros and cons Concrete is a common material used to create work tops and the thickness and strength among other properties can be customized. Work tops are made of concrete with additives added, such as acrylic, silica fume pozzolan, and fibre to chemically reinforce the material. Wire mesh, fibre glass, and steel can also be added to structurally reinforce the concrete. In interior design work tops are cured, ground and sealed to enhance the colour texture and surface shine to create aesthetically pleasing products. Work tops Cons- Extremely tough & resilient Able to withstand pressure from heavy equipment Difficult to damage (Durable) Easy to maintain Environmentally friendly Versatile Long lasting
Transcript: concrete- is made up of four main ingredients: coarse aggregate , fine aggregate , Portland cement,and water. 3). Low maintenance Concrete, being inert, compact and non-porous, does not attract mould or lose its key properties over time 4). Affordability Compared to other comparable building materials, concrete is less costly to produce and remains extremely affordable 5). Fire-resistance Being naturally fire-resistant concrete forms a highly effective barrier to fire spread 6). Thermal mass Concrete walls and floors slow the passage of heat moving through, reducing temperature swings 2). Versatility Concrete is used in buildings, bridges, dams, tunnels, sewerage systems pavements, runways and even roads 7).Locally produced and used -The weight of the material limits concrete sales to within 300km of a plant site -Very little cement and concrete is traded and transported internationally 8).Albedo effect The high "albedo" (reflective qualities) of concrete used in pavements and building walls means more light is reflected and less heat is absorbed, resulting in cooler temperatures 1. Strength and Durability Not weakened by moisture, mould or pests Concrete structures can withstand natural disasters such as earthquakes and hurricanes END OF MY PRESENTATION Concrete Properties of Concrete Strength and Durability Versatility Low maintenance Affordability Fire-resistance Thermal mass Locally produced and used Albedo effect Low life-cycle CO2 emissions 9). Low life-cycle CO2 emissions 80% of a buildings CO2 emissions are generated not by the production of the materials used in its construction, but in the electric utilities of the building over its life-cycle (e.g. lighting, heating, air-conditioning
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