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Uniform curing of the concrete surface throughout the entire surface Hard troweling over the exterior concrete surfaces must be avoided The finishing of the concrete must be performed only after all the water has evaporated completely 3 Curling The bending of concrete edges will result in distortion of the slab in a curved manner
Dec 12 2018 The cost of concrete countertops will depend on if you go the DIY route or have them professionally installed either precast or poured in placeand how much personalization you want Concrete can be cast into any shape and pigmented stained or textured with all kinds of shades and finishes you can even embed tiles stones etc
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The American Concrete Institute ACI is a leading authority and resource worldwide for the development and distribution of consensusbased standards technical resources educational programs certification programs and proven expertise for individuals and organizations involved in concrete design construction and materials who share a commitment to pursuing the best use of concrete
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Aug 04 2017 Polished Concrete Finish Problems 08022017 1259 PM We recently had concrete floors polished in a commercial warehousemanufacturing building in Michigan and are trying to figure out why the finish looks dull smudged and filmcovered in some areas BACKGROUND The concrete slab is approximately 55 years old
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May 07 2018 Plaster is also porous like concrete so over time youll begin to notice some flaws Different types of pool plaster alleviate this problem The first 28 days after a finish is applied you should notice the majority of issues that might occur
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By KAUSHAL KISHORE Materials Engineer Roorkee It is supposed that concrete should give satisfactory service to its entire life However problems arises if care is not taken during construction blemish appears on the surface of a concrete slab it will likely to be one of these bilisters cracking crazing curling delamination discoloration
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Surface voids found on the surface of concrete castings have affected anyone who has ever cast concrete many of the common problems encountered when casting concrete will be addressed Question What are surface voids Various release agents will provide different surface finishes of your concrete casting We recommend a chemically
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Concrete Information Wiki Floated and trowelled finishes Float finishes Prior to the introduction of power tools a floated finish was that produced by a large generally wooden or sometimes metal hand float moved over the surface when the concrete was still plastic
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Repeated passes of steel troweling will result in a burnished finish which has a mirrorlike appearance Hardtroweled surfaces are not recommended for exterior concrete slabs because the smooth finish becomes slippery when wet Hard troweling is also not recommended for airentrained concrete
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S taining a concrete floor combines elements of science engineering and art to produce results that are often unpredictable The color variations are one of the reasons why so many people choose acid stained concrete floors for their homes and businesses Unfortunately problems can arise
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Feb 04 2015 Concrete Problems Due to Poor Workmanship Improper Construction Techniques and the Steps Taken to Reduce these Occurrences Poor workmanship and improper construction methods often lead to
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Bare concrete floors might often be the cheapest option but it can lead to a whole host of problems that could incur more costs hassle and lost time than installing a coating in the first place To illustrate this point weve popped together a list of just a few issues that having an uncoated concrete floor might lead to
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The largest complaint is concrete tearing in the finishing process and it only happens with certain cements How do we solve this The ability to finish concrete can often be related to two factors The first is available paste in the mixture to allow the surface to be finished The second is the available window of time to allow finishing to
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Sep 29 2015 Common Concrete Slab Defects 1 Blisters Blisters as the name suggests are formed when bubbles of entrapped air get stuck 2 Cracking One of the biggest problems with concrete slabs is that they have a tendency 3 Curling Curling is the distortion rising up of a slabs corners and
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early finishing 3 Finishing when the concrete is still spongy Any tool used to compact or finish the surface will tend to force the entrapped air toward the surface Blisters may not appear after the first finishing pass However as the work progresses during the second or third pass the front edge of the trowel blade is lift
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Feb 04 2015 Concrete Problems Due to Poor Workmanship Improper Construction Techniques and the Steps Taken to Reduce these Occurrences Poor workmanship and improper construction methods often lead to concrete failure these are the results of improper project oversight and
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Sprinkle water to facilitate finishing Perform finishing operation while bleed water is present Overwork or over finish the surface Cure with water much colder than the concrete Allow alternates wetting and drying at early age Over use jitterbugs vibrating screeds and bullfloats Allow too much clay and dirt in aggregates
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Oct 27 2008 Concrete cures by a chemical reaction Water is a significant part of that reaction If the water is allowed to evaporate before the reaction is complete you will have problems such as internal stresses which is what you are describing
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Common ones related to finishing problems and surface defects in flatwork their prevention and remedies are discussed here These include segregation excessive bleeding plastic cracking surface blisters pickup or peeling scaling dusting and crazing
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The largest complaint is concrete tearing in the finishing process and it only happens with certain cements How do we solve this The ability to finish concrete can often be related to two factors The first is available paste in the mixture to allow the surface to be finished The second is the available window of time to allow finishing to be completed
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Concrete problems related to moisture ensue when installers have not allowed sufficient time for the moisture to leave the slab Excess moisture creates residual problems which can jeopardize concrete flooring no matter how it is sealed or finished Why Its So Important
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Epoxy is also affordable considering the longterm performance it offers But epoxy floor problems do happen especially when improperly applied Epoxy finishes usually appear on concrete floors where high traffic volume clean conditions and excellent appearance are necessary
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Oct 12 2019 How to Pour Exposed Aggregate Concrete This article is helpful to anybody who wants to pour exposed aggregate concrete at home or for commercial use It will explain the proper procedure and list all the necessary materials This
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One topsurface retarder product is Surface Deactivator by Brickform which provides ten exposure depths from a simulated light acid etch or sand blast finish up to full exposure of 1 aggregate Surface Deactivator offers an extended window before the surface paste is removed allowing the concrete to harden properly which locks in the aggregate and decreases popouts
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Sep 08 2019 How to Finish Concrete Theres more to concrete than just pouring it out and watching it harden Heres what you need to know to shape and smooth fresh concrete into an attractive longlasting surface Try to move quickly except where noted otherwise so you can finish before the concrete dries especially on a hot
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