[sizeddenim]

Here’s where all your careful preparations pay off. Set your protective materials in place as soon as possible. Pay special attention to corners, edges and narrow areas, as these will tend to dry and freeze first. Check the effectiveness of your insulation by taking the temperature of the concrete. Placing a thermometer between the insulation and the concrete will allow you to determine the effectiveness of the insulating layer. If the temperature begins to drop, use additional material or material with a higher “R” value.

[5bernardorios2]

Concrete’s strength is in part a function of the temperature at which it cures. Normal compressive strength is based on curing concrete at its ideal curing temperature, 72 degrees F for a period of 28 days. Warmer temperatures reduce the cure time. On the other hand, cooler temperatures increase the length of the cure period.

[sjalexandre]

Pouring concrete in these conditions actually can be advantageous for contractors. As long as the differential between ambient air temperature and concrete temperature is minimal, concrete poured under cold conditions will produce higher than ordinary ultimate strengths and better long-term durability.

[Comatus]

In some instances you will want to construct enclosures to protect curing concrete from wind and too rapid evaporation. more

[cbrendanjarvisi]

In some cases you will be able to construct heated shelters for your pour area. In these cases you can set up properly vented heaters to keep the pour area warm while avoiding direct contact of fresh concrete with carbon dioxide associated with non-vented heaters or open flame. Carbon dioxide combines with calcium hydroxide in fresh concrete and forms a layer of calcium carbonate, which will result in dusting on the pour surface.

[Saul]

Site preparation

[BgB]

'Cause it's too cold
For you here and now
So let me hold
Both your hands in the holes of my sweater, whoa [links]

[konaya]

These hearts adore
Everyone the other beats hardest for
Inside this place is warm
Outside it starts to pour here

[bitk]

'Cause it's too cold
For you here and now
So let me hold
Both your hands in the holes of my sweater here

[spndr7]

Coming down
One love, two mouths
One love, one house
No shirt, no blouse
Just us, you find out
Nothing that I wouldn't wanna tell you about, no, no, no here

[Aaron]

Whoa, whoa, whoa
Whoa, whoa, whoa, whoa
Whoa, whoa
Whoa, whoa, whoa, whoa
Whoa, whoa [links]

[qqvfredc]

She knows what I think about
And what I think about
One love, two mouths
One love, one house
No shirt, no blouse
Just us, you find out
Nothing that I wouldn't wanna tell you about, no

[mwally]

Sonotubes were designed to resolve a decades-old problem associated with creating concrete columns. Traditionally, that process was very labor-intensive and required the installation of specialized molds. These molds then had to be removed when the column dried, which further slowed down the construction process. here

[lachesis]

Before beginning work with a Sonotube, you must be certain that your installation location is fully prepared for its placement and use.

[storm]

To find the volume of your Sonotube, start by measuring its radius. This can be done by measuring the distance from the tube’s center to one of its edges. Then, multiple that number by itself (also known as “squaring”).

[gregharaksin3]

Mix the concrete mix in a wheelbarrow with hot water to a thick but spreadable consistency. Bagged concrete mix comes premixed with dry cement, limestone and an aggregate, but you must add lime and aggregate if working with only bagged cement. The amount of water needed varies with different brands and bag size, but an 80-pound bag of concrete generally requires about 3 quarts of water. Hot water increases the concrete temperature and extends the amount of time it takes to cool down so the concrete cures more quickly. here

[Mamarok]

Build a lean-to structure around the poured concrete footings with scrap lumber, extending the legs of the lean-to at least 6 feet out from either side of the footing to provide plenty of clearance space. Drape heavy sheet plastic such as 6 mil plastic over the lean-to structure that extends down to the ground to completely close in the lean-to. Turn on a space heater or multiple heaters under the plastic structure to keep the space warm. This step might not be required unless temperatures are expected to fall close to freezing. This structure should only be necessary for a day or two until the concrete sets.

[nsamiramcmillanw]

Concrete footings provide a stable foundation for buildings such as garden sheds and gazebos, but concrete cures best between 50 and 90 degrees Fahrenheit. While you should never attempt to pour concrete footings in freezing temperatures, it is possible to pour footings in cold weather without cracking the concrete. Wait to pour the footings at a time when freezing temperatures are not expected for two weeks. The task is easier when temperatures are expected to be close to 50 F than when closer to freezing.

[MCNARS]

Pack the soil within the trench as tight as possible with a hand tamper or similar tool -- the blunt end of a digging bar works well in tight corners. Concrete footings depend on tightly compacted soil to support the footings and the structure. If the soil isn't compacted, it can easily erode under the footings, causing the concrete to crack. more

[tannerped]

Store bags of quick-setting concrete mix in a room with temperatures as high as possible until just before mixing and pouring. Quick-setting concrete cures and strengthens faster than regular concrete, which reduces the potential for the moisture inside to freeze and crack the concrete while it cures. High temperature storage makes the concrete mix itself hot so it takes longer to cool when poured.