Can you mix concrete with dry concrete?

Jan 25, 2008 · I have NEVER seen dry concrete mix poured into a posthole without adding water after. Even on those wet, rainy days in the field, we still carried large drums of water to add to the concrete. I once asked why, and was told that if you leave it dry to absorb water "on its own", the post may shift before it sets, or it may not set evenly.

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The less water you use to mix the concrete (somewhat dry but workable) the stronger the concrete mix. Accurate concrete mixing ratios can be achieved by measuring the dry materials using buckets or some other kind of measuring device. By measuring the cement, stone, and sand, you will have a consistent concrete mix throughout your entire ...

When you mix concrete properly, it ends up with a consistency that has been compared to cookie dough. To test the consistency, use the blade of your shovel like a knife and try to cut a shallow channel through the surface of the premix concrete. If it is too dry, the channel walls will be crumbly; add more water and mix the concrete further.

This is what really happens underground. No mix concrete

The intermediate posts can be set with layers of premixed and water, with some mixing for consolidation. There is nothing wrong with a little water in the holes for pre-wetting before the post installation. After the initial set (a day or so), the more water that gets dumped in the area, the better the concrete will be.

L) of water per 80 lb (36.3 kg) bag of concrete. For other bag sizes, use Table 2 to determine water content. HAND MIXING INSTRUCTIONS • Empty concrete bags into a suitable mixing container • For each 80 lb (36.3 kg) bag of mix, add approximately 6 pt (2.8 L) of clean water • Work the mix with a shovel, rake or hoe and add water as needed ...

Sep 03, 2020 · When you're mixing and pouring the concrete, you’re gonna have to add more water or it's not going to mix properly. If you're doing a concrete foundation for a retaining wall or a post, the concrete can be more wet because the finish is not going to matter.

Oct 14, 2019 · Scoop an indentation in the center of the powdered mix using your hoe and pour in two-thirds of the water specified in the instructions. Use the hoe to push and pull the mix until the water has been absorbed. Gradually add the remaining amount of water -- but no more -- and continue mixing the concrete until it’s at an even consistency.

Nov 27, 2018 · Green concrete mix contains a percentage of recycled material—fly ash and recycled aggregate—in place of some of the sand and gravel. Post-setting Concrete is another fast-setting blend. The advantage of many post-setting mixes is that they can be poured dry into the post hole and "activated" with water—no mixing necessary.

Technically any liquid (that evaporated the same way water does) can be used in none-hydraolic cement but it will be WTF most of the time - water is as cheap as the liquid you can get, using anything else will drive the cost up with no added bene...

When setting a post simply pour out of the bag into the hole and add water (no mixing required) Suitable for setting post and pouring slabs when rapid return to service is required. Exceeds the requirements of ASTM C 387. 4,000-PSI provides impressive strength and durability

Concrete mix should be poured to the height that is desired. You can add more concrete within 24 hours of the first pour. However this will have a cold joint between the two. When using Sakrete Fast Setting Concrete Mix we recommend to pour the water into the hole first then add the concrete mix. Slope top of mix to allow water to drain away.

Jun 29, 2012 · To Mix or Not to Mix? That is the Question! I get this question a lot from customers that have an installer doing their fence. The installer walks up to a post hole, tosses in a bag’s worth of dry concrete mix, adds a little water on top and claims it will set on its own below grade with the moisture from the ground.

The most common of all cement types used in concrete is Portland cement. Concrete Mix Recipe: 1 Part Portland Cement; 1 1/2 Part Gravel ; 1 Part Sand; 1/2 Part Water ; Mixing your own concrete may take a few adjustments. Once you mix together these four ingredients, use the back of the shovel to smooth the surface of the mixture.

I used dry pouring for putting in posts mostly but even for a simple brick wall I used wet pouring and a vibrated the concrete to get rid of air pockets. But it also important to what underlying soil you have and what you want to do with the slab. I have heard where people put barns on dry poured concrete and they still standing.

Get the inside of the wheelbarrow wet, add your concrete mix out of the bag, wear gloves, and create a wide, round crater in the middle of the dry mix. Add three-quarters of the recommended water, mix it up, and see what you get. If you are mixing only a few bags in the wheelbarrow, those big concrete hoes are not necessary.

Less water makes a stronger concrete, but renders the mixture difficult to use. There is no exact amount to use, so adding the water slowly and mixing as you go allows you to stop when the mix ...

Dec 17, 2019 · The more water you use to mix the very fluid concrete, the weaker the concrete mix. The less water used to mix the concrete, which is somewhat dry but workable, the stronger the concrete mix. Correct concrete mixing ratios are achieved by measuring the dry materials using buckets or some other kind of measuring device.

Apr 27, 2017 · Pre-mixing may also cause issues because as building and installation is taking place, it may cause the previously poured posts or footings to move. If the concrete was not completely dry, the post could move around causing a gap between the semi-dried concrete and the post.

hours after mixing unless hot concrete temperatures or. Mobile Batcher Mixed Concrete (Continuous Mixer) Mobile volumetric mixers are special trucks (Fig. 10-7) that batch by volume and continuously mix concrete as the dry concrete ingredients, water, and admixtures are continuously fed into a mixing trough, typically an auger system.

May 29, 2010 · The mixing action actually segregates the materials and then drops them back on top of each other. Rotating drum mixers typically are mounted on trucks for the ready-mixed concrete industry and should be used for wet-cast concrete only. With this type of mixing action, dry-cast concrete will usually clump together.

A concrete sealer's primary function is to prevent liquid water from soaking into concrete and secondarily to harden the surface reducing concrete dust formation. In residential construction, if concrete still has mix water in it (we often call that "green" concrete or "young" concrete), there can be problems caused by that water as it ...