The American Concrete Institute provides guidance for construction practices for cold weather concreting in ACI 306R-10, Guide to Cold Weather Concreting. A general document of recommended practices, ACI 306 covers the entire spectrum of applications for concrete elements and conditions that may be generally described as cold weather.
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DON'T let new concrete get too cold. The best time to pour concrete is when temperatures are expected to remain above 50 degrees for five to seven days, but plans can go awry with the arrival of
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New ASCC Resource: This article is an excerpt from the new Guide to the Design and Construction of Concrete Toppings for Buildings, the definitive resource on this topic, published by the American Society of Concrete Contractors.To obtain a copy go to ascconline.org or call 314-962-0210.. Toppings are subject to the same general industry recommendations for hot- and cold-weather concreting
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American Concrete Institute, Guide for Concrete Floor and Slab Construction . 291: Hot Weather Concreting . 443: Cold Weather Concreting . 463: Guide to Curing Concrete . 487: Guide for Consolidation of Concrete . 519: Building Code Requirements for Structural Concrete Chapters 37 . 559:
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Maschmeyer Concrete services over 2,600 different customers in all market segments. With over 800 mix designs that comply to strict quality standards: DOT, high strength, structural, lightweight and architectural mixes, the company keeps its two state of Florida Certified Laboratories busy.
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Plastic drain tile becomes very brittle in cold weather, so it is subject to breaking during construction activities such as backfilling. DNR rules refer to the American Concrete Institute's Standard 306 "Recommended practices for Cold Weather Concreting." Refer to the 306 Standard for a thorough understanding of cold weather concreting.
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Curing Concrete - Normal, Hot and Cold Weather. Introduction Portland cement consists of several complex chemical compounds (see composition of cement).In the preparation of concrete, the cement acts as a glue which bonds together the aggregates to achieve the final castproduct.
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Hot weather can create problems in the delivery, placement, and ultimate quality of concrete. To help producers and contractors overcome these problems, the American Concrete Institute has published a new version of the Guide to Hot Weather Concreting (ACI 305R-20).This is the first new hot weather guide in 10 years, and it includes some significant changes.
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Economic necessity to continue work in extremely hot weather; and • Use of shrinkage-compensating cement. 1.5— Practices for hot weather concreting Any damage to concrete caused by hot weather can never be fully alleviated. Good judgment is necessary to select the most appropriate compromise of quality, economy, and practicability.
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Description. This evaporation rate calculator uses the evaporation rate equations in Paul Uno's ACI Materials Journal (July/August 1998) article, Plastic Shrinkage Cracking and Evaporation Formulas, which are based on the popular evaporation rate nomograph from ACI 305R, Weather Concreting.Using this tool, you can quickly calculate the evaporation rate at hourly intervals based on the
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The Committee Report ACI 305R-99, Hot Weather Concreting, says that hot is "any combination of the following conditions that tends to impair the quality of freshly mixed or hardened concrete by accelerating the rate of moisture loss and rate of cement hydration, or otherwise causing detrimental results:
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Environmental factors, such as high ambient temperature, low humidity,high wind, or both low humidity and high wind, affect concrete propertiesand the construction operations of mixing, transporting, and placing of theconcrete materials. This guide provides measures that can be taken tominimize the undesirable effects of these environmental factors and reducethe potential for serious problems.
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03/1998. BR 317. Aggregate Tests For Portland Cement Concrete Plant. 07/2009. BR 319. SUPERPAVE Design PGB Content Compacted Specimen Density Worksheet. 01/2017. BR 324a. Computation of Daily Quantity Adjustment Factors for Air Voids Controlled Mixtures.
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American State Building Codes. When embarking on a building project for a new home, hobby workshop, steel building or metal building kit, it is important before you start building you ensure that you meet all the building codes for your state, county, city or municipality.Failure to do so can result in a suspension of your building permit until you comply with all local codes.
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Concrete screed or straightedge. A bull float - for smoothing the concrete. Kumalong or concrete rake - for pulling and pushing the concrete in place. Mag float - for smoothing the edges. Concrete boots - I know, not really a tool but you need them. Gloves - concrete will burn your skin, you need to protect them.
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Document History. ACI 305R. September 1, 2020. Guide to Hot Weather Concreting. This guide identifies problems associated with hot weather concreting and describes practices that alleviate these potential adverse effects. These practices include suggested preparations and ACI 305R. October 1, 2010. Guide to Hot Weather Concreting.
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