Frequently Asked Questions Art. Con, Inc. Las Vegas Concrete Decorative Concrete Stamped Concrete Stained Concrete. Welcome to Art. Cons Frequently Asked Questions. Q. What is the difference between stamped concrete and overlayA. They are two different products. Overlays are 14 inch thick and are applied over existing concrete. Stamped concrete is a process of stamping newly poured concrete. Q. How soon can I put things on my concrete A. Concrete takes 7 to 2. Your new concrete requires 2 hours of curing before it can handle light rain and 2. ANY foot traffic. Try not to bump or hit your new concrete with hard objects for the first 2. ArtCon frequently asked questions about las vegas concrete stain, concrete stamping, and pavers. Grinding Leveling Grinding concrete eliminates raised trip hazards in sidewalks and other walkways. If you have a business, the Canadians with Disabilities Act. Autoclaved aerated concrete, or AAC, is concrete that has been manufactured to contain lots of closed air pockets. Lightweight and fairly energy efficient, it is. How to OrderSpecify Concrete. Heres how most people order concrete Call the concrete contractor and tell him they want a new driveway, porch, sidewalk. TaM2Ml.jpg' alt='How To Avoid Concrete Cracking Normal' title='How To Avoid Concrete Cracking Normal' />One builder I am talking to says he pours the footings, lets them cure for 28 days and then pours the basement walls. Is this normal, or is it kind of like wearing a. In the past the specifications for concrete prescribed the proportions of cement, fine and coarse aggregates. These mixes of fixed cementaggregate ratio which. Vapor barriers a common way to prevent concrete moisture problems, but the type of barrier and where it should be installed are the subject of much debate. Web portal for buildingrelated information with a whole building focus provided by the National Institute of Building Sciences. Areas include Design Guidance. You will notice the color changing during the curing process. Dont worry this is normal for the curing process of concrete. Q. How do I keep my concrete looking good A. Avoid scraping heavy objects across the surface of the concrete. Keep oil B B Qs, automobile spills, etc. Use Simple Green to remove tire marks. Never use a wire brush to clean concrete. Q. What about cracks in my concrete A. Because all concrete cracks, and we want to control where it will appear, we use control joints to manage the cracking. Control joints are strategically placed, using industry standards, to allow for movements caused by temperature changes, and drying shrinkage. If a workmanship related crack occurs, Art. Con will fix it. Q. What is required of a contractorA. The Nevada Contractors Board requires that a contractor must have a minimum of four years of experience as a workman, supervising employee or contractors inthe field to pass contractor tests administered by the Board, to be bonded and insured and to be of good character. Nevada Revised Statute 6. Q. How long does it take for a crew to set and pour my concrete job A. It alldepends on the particular job specifications, weather conditions, as well as set and pour schedules. Square feet is equal to 1 yard. Q. What is a Sealer on my concrete A. Sealer is a top coat thats put on particluar types of finished concrete projects after it has time to cure usually with in a month, depending on weather to protect the concrete. It usually will enhance the color and beauty of the concrete. Sealers will generally help the concrete to become physically stronger and helps to resist damage from stains, acids, moisture, mold and mildew. Q. How long will a sealer last A. Just like normal housekeeping responsibilities, to maintain the continued beauty of yoru original concrete project, re application of sealer may be necessary yearly, depending upon traffic, stains, and environmental conditions on the concrete. Q. What is your payment policy A. If sealer is required, you may deduct 5, or 2. Balance is due after sealer is applied. We accept Visa, Mastercard, American Express and Discover credit cards. Q. Will colors always matchA. All colors are for reference only and may not depict final color on job. We do not guarantee any matches between color charts, photos and samples with the actual finished product. Each job is an original unto itself and no job will ever match another job exactly. The aggregates and other raw materials used to make our decorative concrete are products by nature and therefore are subject to variations in color, size and shape. Many paver manufacturers have various blend colors that consist of two or more colors. When choosing a blend, it is important to keep in mind that some of the pavers will be dominant in one of the colors and some will be a combination of the colors that are in the particular blend. Q. Can Artcon, Inc. A. Artcon, Inc. is not responsible for defects caused by improperly poured, troweled or cured concrete. Artcon, Inc. is not responsible for defects due to ground moisture or efflorescence resulting in milky or clouded sealer or lack of proper maintenance or use of the subject area. What should I look for to be sure Im getting a quality installation Referrals Always obtain referrals from builders and homeowners who have used concrete tile contractors. Meet with them to get an appreciation for their commitment to quality and value in your job. Look for a professional Do they have a reputation for honesty and quality Do they complete their jobs on time and within budget Do they understand and abide by manufacturer specifications for installationDo your homework Evaluate potential contractors insurance policies and record their professional license number so that you can ask your states Department of Professional Regulation and Licensing about its validity. Keep a healthy skepticism about performance claims and check with the Better Business Bureau to see if there are any claims against a contractor. Sign the contract Do not allow your contractor to begin work until you have both signed a contract specifying the terms of the work, the start and end date, lien releases, warranties, responsibility for permits, the total installed cost and a payment schedule. Make sure they agree to keep the job site neat, clean and safe throughout the installation process. Whats the bottom lineMake sure to select an installer familiar with the manufacturers recommendations for quality and dont hesitate to ask for references. A reputable contractor should be glad to provide a list of successful projects. Its also important to protect your investment when using decorative concrete, so speak with your contractor about proper maintenance procedures. Efflorescence. Definition of Efflorescence efflorescence. Chemistrya. A gradual process of unfolding or developing. The highest point the culmination. See Synonyms at bloom. The deposit that results from the process of efflorescing. Also called bloom. The process of efflorescing. A growth of salt crystals on a surface caused by evaporation of salt laden water. The resulting powdery substance or incrustation Reference Efflorescence is a white crystalline or powdery deposit on the surface of masonry materials like concrete, brick, clay tile, etc. Its caused by water seeping through the wallfloorobject. The water dissolves salts inside the object while moving through it, then evaporates leaving the salt on the surface. Art. Con NSCB Stance on Efflorescence. Art. Con, Inc is not required to fix efflorescence after the problem has been verified by the Nevada State Contractors Board. Majority of the time though Art. Con, Inc will work with the customer on dealing with efflorescence. Art. Con will try their best to help remove the efflorescence but cannot make any promises as to correcting the issue. According to the Nevada State Contractors Board efflorescence is a natural occurring anomaly and therefore the contractor is at NO fault. If a homeowner would like further clarification regarding this matter, the Contractors Board is more than willing to speak with them they can be reached at 7. How to Deal with Efflorescence. Answer This is one of the most common but least understood phenomenons with concrete. Efflorescence is a chalky white salt residue that can occur with any product containing cement. As moisture migrates up to the surface of the concrete, it carries along with it calcium salts from within the concrete. When the salts reach the surface, they react with CO2 in the air and form insoluble calcium carbonate. This white, dusty, scaly salt can be minimal or dramatic, depending on the amount of free calcium salt present in the concrete. Reinforced concrete Wikipedia. Reinforced concrete RC is a composite material in which concretes relatively low tensile strength and ductility are counteracted by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel reinforcing bars rebar and is usually embedded passively in the concrete before the concrete sets. Reinforcing schemes are generally designed to resist tensilestresses in particular regions of the concrete that might cause unacceptable cracking andor structural failure. Bo I Ne Fotografije Download Free. Modern reinforced concrete can contain varied reinforcing materials made of steel, polymers or alternate composite material in conjunction with rebar or not. Reinforced concrete may also be permanently stressed in tension, so as to improve the behaviour of the final structure under working loads. In the United States, the most common methods of doing this are known as pre tensioning and post tensioning. For a strong, ductile and durable construction the reinforcement needs to have the following properties at least High relative strength. High toleration of tensile strain. Good bond to the concrete, irrespective of p. H, moisture, and similar factors. Thermal compatibility, not causing unacceptable stresses in response to changing temperatures. Durability in the concrete environment, irrespective of corrosion or sustained stress for example. HistoryeditFranois Coignet was a French industrialist of the nineteenth century, a pioneer in the development of structural, prefabricated and reinforced concrete. Coignet was the first to use iron reinforced concrete as a technique for constructing building structures. In 1. Coignet built the first iron reinforced concrete structure, a four story house at 7. Charles Michels in the suburbs of Paris. Coignets descriptions of reinforcing concrete suggests that he did not do it for means of adding strength to the concrete but for keeping walls in monolithic construction from overturning. In 1. English builder William B. Wilkinson reinforced the concrete roof and floors in the two storey house he was constructing. His positioning of the reinforcement demonstrated that, unlike his predecessors, he had knowledge of tensile stresses. Joseph Monier, a French gardener and known to be one of the principal inventors of reinforced concrete, was granted a patent for reinforced flowerpots by means of mixing a wire mesh to a mortar shell. In 1. 87. 7, Monier was granted another patent for a more advanced technique of reinforcing concrete columns and girders with iron rods placed in a grid pattern. Though Monier undoubtedly knew reinforcing concrete would improve its inner cohesion, it is less known if he even knew how much reinforcing actually improved concretes tensile strength. Before 1. Roman Empire and reintroduced in the mid to late 1. American New Yorker Thaddeus Hyatt published a report titled An Account of Some Experiments with Portland Cement Concrete Combined with Iron as a Building Material, with Reference to Economy of Metal in Construction and for Security against Fire in the Making of Roofs, Floors, and Walking Surfaces where he stated his experiments on the behavior of reinforced concrete. His work played a major role in the evolution of concrete construction as a proven and studied science. Without Hyatts work, more dangerous trial and error methods would have largely been depended on for the advancement in the technology. G. A. Wayss was a German civil engineer and a pioneer of the iron and steel concrete construction. In 1. 87. 9, Wayss bought the German rights to Moniers patents and in 1. Wayss Freytag. Up until the 1. Wayss and his firm greatly contributed to the advancement of Moniers system of reinforcing and established it as a well developed scientific technology. Ernest L. Ransome was an English born engineer and early innovator of the reinforced concrete techniques in the end of the 1. With the knowledge of reinforced concrete developed during the previous 5. Ransome innovated nearly all styles and techniques of the previous known inventors of reinforced concrete. Ransomes key innovation was to twist the reinforcing steel bar improving bonding with the concrete. Gaining increasing fame from his concrete constructed buildings, Ransome was able to build two of the first reinforced concrete bridges in North America. One of the first concrete buildings constructed in the United States, was a private home, designed by William Ward in 1. The home was designed to be fireproof for his wife. One of the first skyscrapers made with reinforced concrete was the 1. Ingalls Building in Cincinnati, constructed in 1. Use in constructioneditMany different types of structures and components of structures can be built using reinforced concrete including slabs, walls, beams, columns, foundations, frames and more. Reinforced concrete can be classified as precast or cast in place concrete. Designing and implementing the most efficient floor system is key to creating optimal building structures. Small changes in the design of a floor system can have significant impact on material costs, construction schedule, ultimate strength, operating costs, occupancy levels and end use of a building. Without reinforcement, constructing modern structures with concrete material would not be possible. Behavior of reinforced concreteeditMaterialseditConcrete is a mixture of coarse stone or brick chips and fine generally sand or crushed stone aggregates with a paste of binder material usually Portland cement and water. When cement is mixed with a small amount of water, it hydrates to form microscopic opaque crystal lattices encapsulating and locking the aggregate into a rigid structure. The aggregates used for making concrete should be free from harmful substances like organic impurities, silt, clay, lignite etc. Typical concrete mixes have high resistance to compressivestresses about 4,0. MPa however, any appreciable tension e. For this reason, typical non reinforced concrete must be well supported to prevent the development of tension. If a material with high strength in tension, such as steel, is placed in concrete, then the composite material, reinforced concrete, resists not only compression but also bending and other direct tensile actions. A reinforced concrete section where the concrete resists the compression and steel resists the tension can be made into almost any shape and size for the construction industry. FRP composites and Construction Parameters. Key characteristicseditThree physical characteristics give reinforced concrete its special properties The coefficient of thermal expansion of concrete is similar to that of steel, eliminating large internal stresses due to differences in thermal expansion or contraction. When the cement paste within the concrete hardens, this conforms to the surface details of the steel, permitting any stress to be transmitted efficiently between the different materials. Usually steel bars are roughened or corrugated to further improve the bond or cohesion between the concrete and steel. The alkaline chemical environment provided by the alkali reserve KOH, Na. OH and the portlandite calcium hydroxide contained in the hardened cement paste causes a passivating film to form on the surface of the steel, making it much more resistant to corrosion than it would be in neutral or acidic conditions.