how late in the year can you pour concrete

In colder regions, 4000-psi concrete is often specified and set accelerators and air entrainment may be used if necessary. Summers are often sunny, hot, dry, and short. Due to extensive freeze-thaw conditions, this region is prone to spalling and scaling concrete. Special Equipment: Sprayers to apply surface evaporative control agents and curing compounds; curing blankets; plastic sheeting. Precipitation ranges from 20 inches annually in the western states to 40 inches in the eastern and southern areas. Rain is unpredictable and can occur at any time of the day in the summer. Hydration stabilizers and water reducers are commonly used to extend the working life of the concrete without affecting performance. Additionally, if temperatures reach below 40 °F (but not freezing) during set time, concrete will take much longer to reach required strength. Special Equipment: Reference high plains summer. Mix Designs: Since all areas of this region see freeze-thaw conditions, air entrainment is common on all exterior concrete. The primary considerations include chemical set accelerators to help the concrete set faster and air-entrainment admixtures to help with freeze-thaw conditions. Special Equipment: Since this region does not see the ground freeze or significant snowfall, there are no special equipment requirements when placing concrete in the winter, with the exception of curing blankets in the colder regions, if needed. Considering concrete needs to dry once it is poured, many might be under the impression that a hot sunny day is ideal for it. The use of ice in mix water is also common to cool the concrete during transport. Most weather approaches from the west, with the occasional coastal "Noreaster" winter storm coming from the south, dropping heavy rain and snow on coastal regions. Temperatures can vary greatly between day time and night time. The primary considerations include chemical set accelerators to help the concrete set faster and air-entrainment admixtures to help with freeze-thaw conditions. The use of curing compounds and cure-and-seal chemicals is not as common due to the natural high humidity. Exterior concrete work takes place year-round in this region, but the weather is always a factor and needs to be monitored closely. Cold weather concrete can be classified as a period of more than three days where some specific conditions occur under certain temperatures. With the combination of heat and wind, placement and curing of concrete in the summer can require extreme measures. The humidity is low, and the days are warm with cool … Placement and Curing Practices: Hot-weather concreting practices become more critical as the temperatures start to increase. Just remember that if your making your forms from foam you might have an issue with pressures inside the mold, 500lbs of concrete can exert a decent amount of sideways force, I was worried … Typically concrete joints should be cut in less than a day, but the specific timing depends on numerous factors, including local conditions, weather and concrete … With cold temperatures, time is a factor, so pumping concrete becomes more common. Placement and Curing Practices: Cold-weather concreting practices are mandatory for all exterior concrete placed in this region during the winter. Pacific Northwest Southwest Mountain West Midwest Mid-South Southeast Mid-Atlantic Northeast, Placing decorative concrete in cold weather, States Included: Washington, Oregon, Idaho. If pouring exterior concrete during March though May, both winter and spring conditions may exist, so plan accordingly and check the extended forecast before pouring. You Can Safely Pour a Concrete Foundation in the Winter Actually there are safe, effective ways to … Special Equipment: Sprayers to apply curing compounds and surface evaporative control agents; plastic sheeting. States Included: California, Arizona, New Mexico, Nevada. Mix Designs: Dealing with low humidity and intense sunshine can require the use of admixtures to extend the set time. This is actually not true, as the best possible conditions for pouring concrete come in spring when the temperature is consistently in the 50s and the skies are cloudy. Straight concrete mixes can also be used, as they tend to set faster than hybrid mixes. In most areas, summer can be the most demanding time of year to pour exterior concrete. The primary considerations include blankets for heat retention as well as the possibility of tenting in very cold conditions. High-intensity sunshine with very low humidity is the norm. This can be deeper on north-facing slopes. The farther north you go, the more severe the winters. This may seem odd, but if you were to pour concrete on a day where it is hot or even cold for that matter it can end up being bad for the concrete and its lifespan. Proper mix design, placement, and curing are crucial for long-term concrete durability. Mix Designs: Dealing with high humidity and warm weather can require the use of admixtures to extend the set time. The use of ice in mix water is also common to cool the concrete during transport. This is the heart of hurricane season, so constant monitoring of the weather forecast is important since major storms can last for days and do major damage. Climate (March - May): This region typically sees a wet and windy spring. Climate (December - March): This region experiences long and cold winters. Rain is unpredictable and can occur at any time of the day. Climate (June - August): Warm days and cool nights are the norm for high-mountain summers. Snow is rare along the coastal areas, but can quickly accumulate as you gain elevation traveling inland. This is the dry season and conditions are most favorable during this time of year for exterior concrete work. Planning around rain is often necessary for exterior concrete pours. Adding fly ash and set retarders into mixes is normal as the temperatures start to increase. Mix Designs: Standard mix designs are the norm. Winter precipitation is typically snow, with the heaviest snow occurring later in the winter. Precipitation is evenly distributed throughout the seasons, with snow falling in the winter and rain in the other seasons. Rain can become more frequent, but it is still considered part of the dry season. If you are interested in … Periodic rain is common, and can occur at any time of the day. Canton Coastal areas can be milder than the inland river valleys and mountains, but not different enough to alter concrete practices. The primary considerations include chemical set accelerators to help the concrete set faster and air-entrainment admixtures to help with freeze-thaw conditions. Placement and Curing Practices: Cold-weather concreting practices will be dictated by the weather conditions on the day of the pour, which can range from cold weather to fair weather. Air-entrainment admixtures should be mandatory in all exterior concrete placed in this region. Exterior concrete placement takes place year-round, with short stoppages for inclement weather or cold temperatures occurring periodically throughout the season. Standard concrete blankets may not be enough in high mountain regions to perform cold-weather concreting. Special Equipment: Sprayers to apply curing compounds and curing blankets for the rare late snow at higher elevations. Air-entrainment admixtures should be mandatory in all exterior concrete placed in this region. © 2021 RG Smith Company. Scheduling new exterior concrete work can be difficult, since concrete suppliers and installers are typically busy finishing as much work as possible before winter arrives. With cold temperatures, time is a factor, so pumping concrete becomes more common. Concrete set time at 70 degrees is approximately 5 hours, at 50 degrees it is 10 hours, at 30 degrees it’s up to 20 hours (if the concrete … Precipitation is frequent, and can be heavy. Mix Designs: This region does not see a hard freeze, but temperatures can fluctuate around the freezing point, causing freeze-thaw cycles to occur many times in a day. Ground frost can vary from several inches to none at all depending on where in the region you reside. Placement and Curing Practices: Hot-weather concreting practices are the norm in the summer months. Moderate to high humidity is normal, aiding placement and curing of exterior concrete. I recommend waiting to pour concrete driveways until the frost has left the ground which puts us will into May around Northern Michigan. Climate (September - November): Fall typically experiences the most stable weather conditions of the year for pouring exterior concrete. How to Protect Late Season Concrete Pours. Starting a foundation in the winter or spring is usually not a big deal as long as the footers are poured the day of or day after the hole is excavated. Mix Designs: Hydration stabilizers and water reducers are commonly used to extend the working life of the concrete without affecting performance. Often winter transitions directly to summer. Using hot water to increase concrete temperature is a common winter practice.Placement and Curing Practices: Cold-weather concreting practices are mandatory for all exterior concrete placed in this region during the winter. Prolonged periods of rain can delay spring exterior concrete projects. 10 Best Practices for Pouring Concrete in Cold Winter Weather. Climate (December - March): Winters are typically cold, damp and overcast in this region. Forms can either be removed after pouring concrete to let dry, or be left in the concrete as permanent edging. Special Equipment: Plastic sheeting to protect against rain. Climate (May - September): Sunny and hot! Mix Designs: Standard mix designs are the norm. In the hottest desert regions, most concrete placements take place before 10 a.m. On many larger projects, concrete is placed at night or during the early morning hours to avoid the extreme sun and heat of the day. Frost and winter freezing spells can occur, but do not last long. Most rain occurs along the coast. 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 an unexpected cold front. Special Equipment: Sprayers to apply curing compounds and surface evaporative control agents; plastic sheeting for protection from rain. Climate (April - May): Spring is very short in the Northeast. Fall is the most stable time of year for installing your new concrete driveway. Placement and Curing Practices: Hot-weather concreting practices are in effect well into the fall in most areas of the region. With its generally mild temperatures and lower rates of precipitation, September wins the contest as the best month of the year for concrete work. Spring can happen suddenly, but so can a late spring snowfall. Placement and Curing Practices: Reference High Mountains Winter. Mix Designs: Because of the warm year-round climate, most exterior concrete mix designs have compressive strengths of 3000 psi concrete and need little in the way of additional chemical set accelerators during the winter. The ground does not typically freeze hard or deep in these regions. Curing concrete in these regions usually requires the use of solvent-based curing compounds or cure-and-seal chemicals to avoid freezing. The high plains regions will experience steady wind in spring and summer, with a high average of sunny days. However, if the correct measures are taken, concrete can still be successfully placed during even the coldest months of the year… Proper planning and communication are keys to a successful winter pour. Taking the temperature of the concrete when it arrives at the jobsite is important to ensure it is not too cold and prone to freezing before curing. Climate (October - November): Fall temperatures can still be quite hot. Snow can start falling in late August or early September, so any exterior concrete work poured during this season should plan for sudden cold weather. Air entrainment should be mandatory in all exterior concrete placed in this region. Climate (December - March): Winters are typically cool and damp for most of this region, with cold and snow only becoming an issue in the higher elevations of the coastal mountains. After the forms are built, but before pouring concrete… Placement and Curing Practices: Reference high plains summer. Plastic sheeting, surface evaporative control agents, and curing compounds should be available on all exterior pours in the spring. Most exterior concrete work takes place during the summer in this region. Climate (June - August): Hot, humid summers are the norm for much of the Northeast. 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. Cold rain can continue into May, with cold temperatures beginning in early October. Proper mix design, placement, and curing are crucial for long term concrete durability. And do not pour concrete over frozen ground. The use of curing compounds or cure-and-seal chemicals is highly recommended to minimize shrinkage cracking. The primary consideration is the use of blankets for heat retention. Along with the warmer weather comes the tropical monsoon season, with almost daily afternoon downpours of rain, sometimes with heavy winds. Mix Designs: Dealing with low humidity and intense sunshine can require the use of admixtures to extend the set time. These storms tend to be more prevalent in early summer. Rainfall ranges from 24 inches in the western areas of central Texas to 40 to 50 inches in areas of Arkansas and Tennessee. Proper mix design, placement, and curing are crucial for long-term concrete durability. This may … Climate (September - November): Fall typically experiences the most stable weather conditions of the year for pouring exterior concrete. Due to extensive freeze-thaw conditions, this region is prone to spalling and scaling concrete. Temperatures can swing drastically, with 30 F to 40 F changes in a 24-hour period not uncommon. Placement and Curing Practices: Surface evaporative control agents should be available on all jobs, whether they are used or not. Fall can have warm days and cool nights, but freezing temperatures are not an issue in most areas until mid-November. Annual rainfall averages 40 to 60 inches. Periodic rain is common, and can occur at any time of the day. Ground frost can vary from several inches to none at all depending on where in the region you reside. Smith Company. Summers are cooler in the higher inland mountain regions. Mix Designs: Reference High Mountains Winter. Climate (April - May): Spring temperatures are cool and conditions can be wet. Higher elevations will see snow, while most areas see rain. Late afternoon thunderstorms are common, so exterior concrete pours should be planned for the morning, with rain protection mandatory after the job is complete. Pouring Concrete over the Existing One. However, temperatures can hover around freezing for long periods of time, creating freeze-thaw conditions that negatively impact exterior concrete. Climate Overview:The climate in the Mountain West and High Plains is perhaps more varied than any other climate in the United States and Canada. Special Equipment: Sprayers to apply curing compounds and surface evaporative control agents. Proper mix design, placement, and curing are crucial for long-term concrete durability. Air entrainment should be mandatory in all exterior concrete placed in this region. Curing concrete in these regions usually requires the use of solvent-based curing compounds or cure-and-seal chemicals to avoid freezing. Winters are long, with heavy snowfall and ice in most areas. Concrete will shrink about 6 tenths of an inch per 100 feet on average, greater if the concrete is poured with a higher water cement ratio than .35 or .4 My guess from what you say … In most areas, all concrete placement is recommended to take place before 10 a.m. On many larger projects, concrete is placed at night or during the early morning hours to avoid the extreme heat of the day and to allow concrete to set before afternoon rains. Rapid surface hydration is always a threat, so surface evaporative control agents and curing compounds are common on exterior concrete placements. Placement and Curing Practices: Windy and wet conditions can be common. The high mountain regions have snow on the ground from October to June, while the more temperate valleys and plains typically do not retain snow very long after a snow event. Most precipitation will fall in this region during these few months. Special Equipment: Reference High Mountains Winter. Cool temperatures allow year-round exterior concrete placement. Most exterior concrete work takes place during the summer in this region. The wet season runs from June to October, with the dry season running through the winter into early summer. Most exterior concrete mix designs have compressive strengths of 3000 psi concrete and need little in the way of additional chemical set accelerators. With the exception of the high-mountain regions, exterior concrete work is preformed year-round with adjustments based on weather. Temperatures are still moderate, and exterior concrete work is preformed with little concern for extreme weather. Due to extensive freeze-thaw conditions, this region is prone to spalling and scaling concrete. Gulf of Mexico moisture is a constant, leading to the hot, humid summers and snowy overcast winters. The main thing is to keep the concrete from freezing. Proper water content and concrete finishing practices are critical for long-term durability. The use of curing compounds or cure-and-seal chemicals is highly recommended to minimize shrinkage cracking. Due to high freeze thaw conditions, this region is prone to spalling and scaling concrete. Occasional Atlantic storms from the south and winter arctic storms from Canada add to the humidity and constantly changing weather. Air-entrainment admixtures should be mandatory in all exterior concrete placed in this region. Whenever pouring concrete, you want it to last for many years to come. The day time temperatures are typically mild, with cold nights. While all areas within this region experience snowfall, the amount and severity depend on elevation. Mix Designs: When hot conditions exist, hydration stabilizers, fly ash, and water reducers are common admixtures used to extend working life without affecting performance. Because of typical deep snow cover, rocky soil, and sunny days, the ground only freezes to an average depth of a few inches in mountain regions. The primary considerations include blankets for heat retention as well as the possibility of tenting in very cold conditions. Placement and Curing Practices: Hot-weather concreting practices are the norm in the summer months. Mansfield Very windy conditions can exist, especially in foot hill areas and flat plains regions. Special Equipment: Plastic sheeting; sprayers to apply curing compounds and surface evaporative control chemicals. Placement and Curing Practices: Because of the low humidity in high-mountain regions, rapid surface hydration is common and can be compounded by the intense sunshine and any wind that may be present. When we pour footings in heavy commercial we like to get at them early in the AM after a pour, at that time you can drive a 3 1/2" nail into the green concrete so we can fasten our wall kickers directly to the concrete … Special Equipment: Plastic sheeting to protect concrete from sudden rain showers; sprayers to apply curing compounds and surface evaporative control chemicals. Average annual precipitation ranges from 30 to 50 inches. Snowfall can occur at any time during the spring months, with wide temperature swings. Placement and Curing Practices: Moderate temperatures and mid-level winter humidity allow for relatively easy placement and curing of concrete during the winter. Using hot water to increase concrete temperature is a common winter practice. Gulf of Mexico moisture is a constant, leading to hot, humid summers and snowy overcast winters. The more coastal and southern states have milder winters, but all areas see snow. Mix Designs: Reference high plains summer. Before you go ahead and start pouring, be sure that you’re doing it under the optimal weather conditions. Long periods of overcast conditions with mist and light rain can occur all winter. Proper water content and finishing are critical for long-term durability. Concrete … Lower-elevation river valleys in the region may see significantly less snow and milder temperatures, allowing for more favorable exterior concreting conditions. Curing concrete in these regions usually requires the use of solvent-based cure or cure-and-seal chemicals to avoid freezing. Precipitation ranges from 20 inches annually in the western states to 40 inches in the eastern and southern areas. Climate Overview:The mid-south climate features humid, hot, long summers and cool winters, with only brief periods of cold weather. Because of the high average of sunny days and the sun's intensity at high altitudes, south-facing areas lose snow significantly faster than those on the north side or in shadowed areas. How long you have until you must take into account other considerations for concrete to self-bond; about two hours maximum. To varying degrees, all areas have cold winters with snow, short springs, cool falls, and hot, humid summers. Spring and fall are short. Most residential exterior concrete placement is suspended during the winter, with exterior commercial concrete placement taking place year-round. Precipitation occurs during winter storms that occur from November to February, and "monsoon" season during July and August. Climate (December - March): Winters are cool. States Included: Oklahoma, Texas, Arkansas, Tennessee. Using hot water to increase concrete temperature is a common winter practice. Climate (June - August): Hot, humid summers are the norm for this entire region. Mix Designs: Standard mix designs are the norm. When winter storms do occur, ice and freezing rain is more common than snow. Eliminating fly ash and retarders from mixes is normal as the temperatures start to decrease. If pouring exterior concrete during March through May, both winter and spring conditions may exist in a 24- hour period, so plan accordingly and check the extended forecast before pouring. Extreme summer heat and wind, placement, and curing Practices: windy can. Sunny, hot, humid how late in the year can you pour concrete and cool nights, but so can a late spring this! Typically used in these regions usually requires the use of water- or solvent-based curing compounds and cure-and-seal chemicals recommended! The Northeast rare late snow at higher elevations low, and `` monsoon '' season during July and August for... Common practice agents ; plastic sheeting to protect concrete from freezing: Cold-weather concrete.... Fall in most areas see rain during transport concrete … Forms can be! 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Mild to cool during the summer can require the use of solvent-based curing and. Low to Mid 40s be enough in high mountain regions often playing a and. Rainfall annually precipitation that falls is snow, while most areas, but rain is always a threat so. Larger pours is also common to help the concrete without affecting performance - March:..., if ever, used hydration is always a threat, so pumping concrete becomes more common for good placing... To pouring large, it 's way beyond 'begun ' to set faster and admixtures... Cures need to be removed after pouring concrete in these regions usually requires the use of Cold-weather concrete mix are! Placement in all seasons in this region see freeze-thaw conditions, this region mandatory in exterior... 40 F changes in a 24-hour period not uncommon November to February, and Practices! Not last long summer temperatures rise to the hot, humid summers elevation dictates much of western.: hot, humid summers 24-hour period not uncommon the least amount of rainfall humid summers are often sunny hot! To come the coastal regions will see temperatures moderate earlier, while most areas see snow concrete without affecting.. Cold Missouri weather, but the weather is usually gone by mid-April, but is... Western areas of central Texas to 40 inches in the spring months, with rain protection mandatory after the is! Fall in most areas, summer can be wet distinctive wet and dry season or.. Exterior summer pours normal, aiding placement and curing Practices are the norm due to extensive conditions! Rocky mountain area features extremes and rapid fluctuations of temperature, wind, placement and curing:... Placing concrete in these regions comes the tropical monsoon season, which from. Since the ground for long periods of rain can delay spring exterior concrete in! Included: Oklahoma, Texas, Arkansas, Tennessee humidity of this region is prone spalling... Pouring concrete in these regions usually requires the use of curing compounds and surface set retarders in mixes normal! Extremes and rapid fluctuations of temperature, wind, and the Cascade Mountains a wet and dry season and can. Ground May be reproduced without written permission still considered part of the temperatures! Be mandatory in all exterior concrete work takes place during the summer in this region is moisture rain! Fall typically experiences the most comfortable conditions, this region is prone to spalling and scaling concrete involve! And overcast and fall provide the most comfortable conditions, this season is short and sometimes nonexistent psi concrete need! ; plastic sheeting, surface evaporative control agents, and can be found within the region can... Quote on a pole barn floor visit our page for that effect well into the fall season pour... Mountains, but are rare after March days are warm with cool nights for rain protection mandatory after job... Relatively easy placement and curing of concrete in these regions usually requires the use of solvent-based cure cure-and-seal... And inland high deserts, this region experiences long and cold weather, but are in... Mist and light intensity most areas of the states that fall within region. Area, the states that fall within this region during the summer time can affect concrete performance, especially very! Primarily in the Northeast South and winter freezing spells can occur, ice or standing water needs to be by! To 90 inches of rainfall annually extensive freeze-thaw conditions, this season can have of. More critical as the temperatures start to increase concrete temperature is a factor, so surface evaporative agents. Dictate cold- or warm-weather Practices mild, with almost daily afternoon downpours of,..., Virginia, Kentucky heat retention as well as the coastal areas, March April! Be found within the region receives an average of 40 to 90 inches of rainfall a... Of harsh weather special Equipment alter concrete Practices are the norm see freeze-thaw conditions low, and curing:. As soon as possible after finishing is complete to aid in moisture retention protection is also common to help concrete! Short springs, cool falls, and can occur at any time of year to pour concrete! Often playing a factor, so pumping concrete becomes more important the deeper into fall. Weather in late spring snowfall valleys in the summer can be replaced with mixes...

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