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Pouring Concrete in Hot Weather - The Concrete Network

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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Curing Concrete in Hot Weather - The Concrete Network

Learn more about Pouring Concrete in Hot Weather. If slump loss becomes a problem, rather than adding excessive water, try using a superplasticizer (high-range water reducer). These admixtures can increase slump without affecting the concrete's final strength or appearance. Learn more about Concrete Admixtures for Hot Weather.

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Pouring Concrete in Hot Weather The Concrete Network

Jun 22, 2020  Pouring concrete in hot weather. Laying your own concrete mix can be a challenge at the best of times, but did you know that pouring concrete in hot weather can have just as much impact as cold conditions? How is concrete pouring affected by heat? Higher air temperatures mean that concrete will cure more quickly.

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Concrete Admixtures for Hot Weather - The Concrete Network

In hot weather, concrete with fly ash or slag will set a bit slower. But using admixtures to control set and slump is more common and does not lower the quality of the concrete or change its color. In the July 2002 issue of Concrete Construction ("Stamping Concrete: Managing Initial Set Times"), Joe Nasvik wrote the definitive guide, advocating ...

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Curing Concrete in Hot Weather - The Concrete Network

Learn more about Pouring Concrete in Hot Weather. If slump loss becomes a problem, rather than adding excessive water, try using a superplasticizer (high-range water reducer). These admixtures can increase slump without affecting the concrete's final strength or appearance. Learn more about Concrete Admixtures for Hot Weather.

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Concrete Admixtures for Hot Weather - The Concrete Network

In hot weather, concrete with fly ash or slag will set a bit slower. But using admixtures to control set and slump is more common and does not lower the quality of the concrete or change its color. In the July 2002 issue of Concrete Construction ("Stamping Concrete: Managing Initial Set Times"), Joe Nasvik wrote the definitive guide, advocating ...

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Can You Pour Concrete in the Rain? - The Concrete Network

Here are some tips for preventing and troubleshooting rain-damaged concrete. Advice for Pouring Concrete in Rain. Despite modern weather forecasting technology and radar maps, an unexpected rain shower can develop without warning, especially during the wettest months of the year (see these guidelines for placing concrete by region and season).

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Concrete Pouring Tips - The Concrete Network

States Included: Washington, Oregon, Idaho Climate Overview: If you wait for clear days and dry weather to pour exterior concrete in the Pacific Northwest, you may be idle for a long time. The region receives an average of 40 to 90 inches of rainfall annually. The two major weather influences in the Pacific Northwest are the Pacific Ocean and the Cascade Mountains.

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Curing Concrete in Hot Weather - Concrete Construction

Dec 01, 2004  Curing Concrete in Hot Weather. I’ve recently moved my contracting business to the South. Concrete finishers here tell me that a slab poured outside on a hot day won’t cure properly unless it’s kept wet. They do this by having someone periodically spray it with water from a hose or by setting up a lawn sprinkler, once the concrete has set ...

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Hot Weather Concrete Construction

Concrete applications may be considered hot weather concrete at temperatures ranging from 77 to 95 degrees Fahrenheit depending on the specific application. Precautions should be planned in advance to counter the effects of high temperature well in advance of execution to counter these effects. Precautions may include use of materials with a ...

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Guide to Hot Weather Concreting - American Concrete

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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STRUCTURE magazine Cold and Hot Weather Concrete

Placing concrete at reduced ambient temperatures, such as night placements, can significantly ease the problems related to hot weather concreting. Mass concreting during hot weather can be extremely challenging and is the scope of a future article. Proper curing is extremely important to reduce cracking.

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Curing Concrete – Normal, Hot and Cold Weather

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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Tips for Pouring Concrete in Cold Weather - The Concrete ...

Pouring Decorative Concrete in Cold Weather Even when it's cold outside you can place decorative concrete successfully—if you heed these precautions By Bill Palmer, Concrete Network Columnist Concrete doesn't like the cold—but it is still possible to get

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Best practices for pouring concrete in hot weather. - YouTube

Here I break down best practices for pouring in hot weather. When temps reach in the 90's and beyond it is important to follow proper techniques to place qu...

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Cold Weather Concreting - Winter Concrete Mix - The ...

Many of the problems with cold weather can be overcome by the ready mix producer. Here are a few things to keep in mind: Hot water—Your ready mixed concrete producer will usually have, and use, hot water in the concrete when the weather turns cold. Most producers will try to have the concrete be at least 65°F when it leaves the plant, which is generally good enough depending on air ...

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Hot Weather Concreting: Why Monitoring Concrete ...

Jun 25, 2020  The American Concrete Institute (ACI) specifies in ACI 305R-10 "Guide to Hot Weather Concreting" recommended maximum concrete temperatures both at delivery and during curing. These recommendations ...

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How to Protect Concrete During Cold Weather Pours For ...

Dec 04, 2013  There are three primary objectives for cold weather concreting: 1) protect the newly placed concrete from early-age freezing, 2) protect concrete

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How to Pour Concrete in Hot Weather Sakrete

When pouring concrete in hot weather keep an evaporative retarder ready on site in case the temperature gets hotter and water is rapidly evaporating. Use ice as part of the concrete water mix to cool the concrete. Reduce the mixing time once water has been added to the mix. Bags of concrete mix and all equipment needed to pour concrete in hot ...

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305R-10 Guide to Hot Weather Concreting

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. 4.1—General. 4.2—Estimating evaporation rate. 4.3—Temperature of concrete.

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Cold Weather Concreting - Portland Cement Association

Concrete Technology-Concrete Construction-Cold Weather Concreting. Weather conditions at a jobsite – hot or cold, windy or calm, dry or humid – may be vastly different from the optimum conditions assumed at the time a concrete mix is specified, designed, or selected – or from laboratory conditions in which concrete specimens are stored and tested.

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Hot Weather Concreting: Why Monitoring Concrete ...

Jun 25, 2020  The American Concrete Institute (ACI) specifies in ACI 305R-10 "Guide to Hot Weather Concreting" recommended maximum concrete temperatures both at delivery and during curing. These recommendations ...

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ACI 306R-16: Guide to Cold Weather Concreting

ACI 306R-16: Guide to Cold Weather Concreting Author: ACI Committee 306 Subject: This document guides specifiers, contractors, and concrete producers through the selection processes that identify methods for cold weather concreting. The objectives of cold weather concreting practices are to: a\) prevent damage to concrete due to freez\ ing at ...

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How Long Does Concrete Take to Cure? - The Concrete Network

• Hot, dry weather – concrete will crack when it’s too dry, and hot weather – from a prolonged heatwave, for instance – will cause this to happen quickly. In these conditions, you should erect a shelter and keep the concrete reasonably damp to mitigate the effects of any arid weather conditions.

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Networx: Pouring a concrete slab - Lifestyle - fosters ...

Jun 07, 2018  — The best weather for pouring a concrete slab is not too hot or cold — 70 degrees is ideal. — If you hire a pro to do the job, get multiple quotes and compare.

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Pervious Concrete: How to Properly Place and Cure For ...

Aug 28, 2009  If hot weather is inevitable, Fisher suggests pouring early in the morning or overnight. Fisher says pervious concrete can be placed in temperatures ranging from 40 to 90 degrees Fahrenheit ...

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Beware Covering with Plastic! In Decorative Concrete

Apr 30, 2016  Plastic Sheeting Can Permanently Discolor Concrete Adverse weather conditions such as rain, snow, or freezing temperatures often make it necessary to protect concrete by covering it. One of the most effective materials to guard against rain is plastic sheeting (visqueen). In cold weather, plastic-clad concrete curing blankets are often used to protect the surface from

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American Concrete Institute

The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based 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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ACI SPEC-305.1-14(20) Specification for Hot Weather ...

This specification includes hot weather requirements for production preparations, delivery, placement, finishing, bleed-water evaporation, curing, and concrete protection. Provisions governing a preplacement conference, concrete mixture proportions, maximum allowable concrete temperature, rate of surface evaporation measurements, evaporation ...

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Tips for staying safe in Jamestown's hot weather ...

2 天前  Dwelle said his crew sometimes drinks more than two cases of bottled water during the course of a day pouring concrete. Ranum said drinking water is one of the key ways to cope with hot conditions. "If you are already thirsty, you are already dehydrated," she said. "... hydrate before going outside, stay in the shade if you can and take ...

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Cold Weather Concreting - Tips for Smaller Projects For ...

Jan 18, 2021  The factors and considerations concrete contractors should be aware of for placing concrete in cold weather. ... and actually mix the concrete before pouring into the hole. ... Hot Weather Concreting.

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How to Protect Concrete During Cold Weather Pours For ...

Dec 04, 2013  There are three primary objectives for cold weather concreting: 1) protect the newly placed concrete from early-age freezing, 2) protect concrete

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