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  • Hot Weather Concreting: Step Delay Process Fritz

    2020-8-20  The Step Delay process allows you the opportunity to evenly stamp the concrete by slowing down the set time for portions of the concrete. Without this process, some of the concrete may set up before you have a chance to stamp, creating uneven patterns or unsightly cracks in the design.

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  • How Hot Weather Affects the Concreting Process -

    One such example is the effect of hot weather on the concreting process. Concrete poured in hot weather requires special care and adjustments for it to properly settle, cure and achieve its optimum strength.If these adjustments are not made during the concreting process, the final structure is likely to lack in strength and durability.

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  • Hot Weather Concreting Problems, Effects and

    2017-3-18  ACI 305 “Hot Weather Concreting” defines hot weathers as any combination of the following conditions that tends to impair the quality of the freshly mixed or hardened concrete: The success of many hot-weather concreting operations depends on the steps taken to slow the cement hydration reactions within the concrete and to minimize the rate of evaporation of

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  • Hot Weather Concreting Civil + Structural Engineer

    2020-10-1  Regulating the internal temperature of fresh concrete is crucial in hot weather because if it exceeds 158-160°F, the hydration process of the cement is altered,

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  • What is Hot Weather Concreting? Specify Concrete

    2018-7-12  Contractors capable of precise, quick concrete placement are in a better position to maintain quality in hot weather. Therefore, have adequate crews available to ensure prompt placement. Adverse conditions impact all aspects of a project, including planning, mixing, transporting, placing and finishing.

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  • Best Practices for Hot Weather Concreting CarbonCure

    2020-6-11  The ACI defines hot weather concreting as, “one or a 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: high ambient temperature; high concrete temperature; low relative humidity; and high wind speed.”

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  • Guide to Hot Weather Concreting - American Concrete

    2017-8-5  drying shrinkage. The placement of concrete in hot weather, however, is too complex to be dealt with by setting a maximum as-placed or as-delivered concrete temperature. Concrete durability is defined as the ability of concrete to resist weathering action, chemical attack, abrasion, or any other process of deterioration (ACI 201.2R). Generally, if

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  • Hot Weather Concreting Precautions Effects

    2019-3-8  During hot weather concreting, complete the concreting operations like transporting, placing and finishing of concrete as fast as is practicable or possible. During the hot weather concreting, immediately follow the initial finishing, spraying a fine film of aliphatic alcohol over the exposed concrete for reducing the evaporation of water.

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  • HOT-WEATHER Concreting DATA - CCAA

    2018-6-27  are placed on a hot day followed by a cool night, lead to thermal gradients between the warm/hot interior and the colder external surface. The warmer interior provides a restraint to the colder external surface, which wants to contract. Page 3 of 7 >HOT-WEATHER Concreting % OF 28-DAY COMPRESSIVE STRENGTH OF CONCRETE CURED AT 23°C AGE (days) 30 ° C 40 ° C

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  • Hot Weather Concreting - Causes, Effects, Precautions ...

    2020-4-14  The following methods can be used by the supplier to assist with the placing of concrete in hot weather: Shade stockpiles, sprinkle aggregates ahead of time for evaporative cooling, or cool them by other means. Paint the mixer and storage bins white to minimise absorption of heat from the sun.

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  • Hot Weather Concreting: Step Delay Process Fritz

    2020-8-20  Hot Weather Concreting: Step Delay Process. Home; Articles Events; Published: 08.20.2020. Filed Under: Decorative, Ready-Mix Production. For people around the country, summer is coming to an end. Students are returning to school, fall colors are appearing on the trees, people are dreaming of pumpkin-spiced coffee, and temperatures are cooling ...

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  • Hot weather concreting - ScienceDirect

    2019-1-1  Hot weather concreting necessitates due considerations in concrete mix design and placement. The high evaporative losses and high temperatures, which are characteristic of hot weather conditions, can introduce microstructural inhomogeneity and cracking in the concrete at an early age.

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  • Hot Weather Concrete Construction

    The use of liquid nitrogen is one option to reduce concrete’s temperature during hot-weather concreting. The precautions required to ensure a quality end product will vary depending on the actual conditions during concrete placement and the specific application for which the concrete will be used.

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  • Guide to Hot Weather Concreting - American Concrete

    2017-8-5  3.1—Potential problems in hot weather 3.2—Potential problems related to other factors 3.3—Practices for hot weather concreting Chapter 4—Effects of hot weather on concrete properties, p. 3 4.1—General 4.2—Estimating evaporation rate 4.3—Temperature of concrete 4.4—Ambient conditions 4.5—Water 4.6—Cement

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  • Hot-Weather Concreting, Chapter 13 - Cemstone

    2019-12-2  Hot-Weather Concreting Fig. 13-1. Liquid nitrogen added directly into a truck mixer at the ready mix plant is an effective method of reducing concrete temperature for mass concrete placements or during hot-weather concreting. (69954) 229 HOME PAGE

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  • Concreting Practice In Hot Weather Holcim Australia ...

    2021-5-24  Precautions for hot weather concreting Planning ahead and preparation for each job will minimise the problems mentioned above, and will avoid irritating on-site delays. Probably any experienced concrete contractor will know why it is sound sense to

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  • 10 TIPS TO SUCCESSFUL HOT WEATHER

    2018-7-10  Hot weather concreting can ultimately lead to accelerated curing and substandard strength. If you do not counteract the effects of excessive ambient heat before, during and after the pour, your concrete could deteriorate long before its expected service life. Here are 10 tips for hot weather concrete placement jobs. 1. Plan Carefully

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  • Hot Weather Concreting: Why Monitoring Concrete ...

    Placing concrete in hot weather necessitates extra precautions to ensure that the concrete sets properly and gains strength at a stable rate. Hot weather accelerates early-age strength gain, which can be an advantage in construction, but temperatures that are too high could cause concrete durability problems, such as delayed ettringite formation (DEF) or drying shrinkage.

  • Get Price
  • Hot Weather Concreting: Why Monitoring Concrete ...

    2020-6-25  Regulating the internal temperature of fresh concrete is crucial in hot weather because if it exceeds 158-160°F, the hydration process of the cement is altered, increasing the potential risk of DEF.

  • Get Price
  • 4 Concreting Problems Caused By Hot Weather

    So, do plan precautions against these hot weather challenges in advance so that the concreting process can continue without incident. Moisture Loss; Hot weather causes rapid evaporation from the freshly mixed concrete and surface drying, which may even lead to surface shrinkage.

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  • Hot Weather Concreting – Alabama Concrete

    2020-7-2  Hot weather concreting, as defined by ACI 305R, is any combination of the following conditions that tends to impair the quality of freshly mix or hardened concrete by accelerating the rate of moisture loss and rate of cement hydration or otherwise causing detrimental results: high ambient temperature, high concrete temperature, low relative ...

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  • Hot Weather Concreting - IDC-Online

    2019-2-4  In hot weather, the concrete bed, forms, steel reinforcement, mixing or concreting equipments etc. too get hot transferring the heat to the mix contributing further to the problem. Based on my understanding on the subject which is based on some studies about the topic in books, the web as well

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  • Concreting Practice In Hot Weather Holcim Australia ...

    2021-5-24  Precautions for hot weather concreting Planning ahead and preparation for each job will minimise the problems mentioned above, and will avoid irritating on-site delays. Probably any experienced concrete contractor will know why it is sound sense to

  • Get Price
  • Hot Weather Concreting Practices for Concrete

    2018-2-19  Hot Weather Concreting Practices for Concrete Producers. Share. February 19, 2018. ... In extreme cases, the use of chilled water or even ice during the batching process may be necessary. Chilled water can reduce concrete temperature by up to 10°F (6°C) and ice can reduce temperature by as much as 20°F (12°C)

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  • Hot Weather Concreting: Why Monitoring Concrete ...

    Placing concrete in hot weather necessitates extra precautions to ensure that the concrete sets properly and gains strength at a stable rate. Hot weather accelerates early-age strength gain, which can be an advantage in construction, but temperatures that are too high could cause concrete durability problems, such as delayed ettringite formation (DEF) or drying shrinkage.

  • Get Price
  • Hot Weather Concreting: Why Monitoring Concrete ...

    2020-6-25  Regulating the internal temperature of fresh concrete is crucial in hot weather because if it exceeds 158-160°F, the hydration process of the cement is altered, increasing the potential risk of DEF.

  • Get Price
  • 4 Concreting Problems Caused By Hot Weather

    So, do plan precautions against these hot weather challenges in advance so that the concreting process can continue without incident. Moisture Loss; Hot weather causes rapid evaporation from the freshly mixed concrete and surface drying, which may even lead to surface shrinkage.

  • Get Price
  • 10 TIPS TO SUCCESSFUL HOT WEATHER

    2018-7-10  Hot weather concreting can ultimately lead to accelerated curing and substandard strength. If you do not counteract the effects of excessive ambient heat before, during and after the pour, your concrete could deteriorate long before its expected service life. Here are 10 tips for hot weather concrete placement jobs. 1. Plan Carefully

  • Get Price
  • Hot Weather Concreting: Why Monitoring Concrete ...

    2019-8-20  Temperature monitoring of hot weather concrete is required in most hot-weather concreting applications and is essential to preventing delayed ettringite formation and drying shrinkage, maximizing long-term durability and minimizing repair costs. The COMMAND Center system provides a user-friendly, affordable option for this purpose.

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  • What is your Evaporation Rate? Hot Weather

    2014-7-1  Hot Weather Concreting. July 1, 2014 / in Publications and Blogs / by McAlvain Companies, Inc. As another hot summer sets in on the Treasure Valley, we over at McAlvain Concrete Inc. have turned our attention to the coming hot weather conditions and its effects on the evaporation rates of concrete we are placing.

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