mixing concrete - dos and don'ts - bob vila

mixing concrete - dos and don'ts - bob vila

Concrete holds a place of honor in both the professional construction and do-it-yourself worlds. When mixed correctly, this simple combination of aggregate, cement, and water becomes strong and durable enough toproduce walkways, beautiful planters, walls, and even house foundations. While concrete trucks with perpetually rotating drumsdeliver mixedconcrete for large jobs, DIY concrete projects typically operate on a smaller scale, relying ondry sack concrete mixed withwater. The secret to a successful project lies in mixing the concrete correctly and knowing which tools to use. Sure, the old standbysa wheelbarrow and hoeare still adequate choices for mixing all-purpose concrete if you dont have access to a portable power mixer. But when it comes to wet-cast concrete, which is rapidly growing in popularity as a material for countertops and other castings, an impressive new tool promises to speed up the job: the HYDE StirWhip. To ensure satisfying results,read on to find out what you should (and shouldnt) do with thistrusty tool when youre mixing concrete.

Before you begin, run through your checklist one last time.You wont want to have to dig out a missing item once your hands are covered in wet concrete. At the top of your list will be the dry concrete mix and a water source. The tools youll need for mixing will depend on your choice of concrete:

Becausethe all-purpose concrete used in larger projects like sidewalks, slabs, or paver patios is quite thick and heavyand there will be a lot of itits a good idea to work with a sturdy wheelbarrow (one that wont tip over under the weight) and a hoe. Or, consider upgrading to a portableconcretemixer, which you can rent from a big-box home improvement center for around $50 a day.

To make countertops, balusters, or other small concrete accents with smoother finishes, youll want to whip up a wet-set concrete mix that consists of smaller bits of aggregate. Mix this in a large plastic bucket using a fully charged power drill and theunder-$10 StirWhip drill attachment. Because the StirWhip features an 18-inch-long, 3/8-inch-thick steel shank (unlike shorter mixing paddles), you can reach all the way to the bottom of a five-gallon bucket with ease so you wont leave any dry powder unmixed.The attachments multi-finger configuration helps reduce drag on your drill while slicing quickly through the mix for a smooth blend. Plus, those open fingers are easy to clean of wet or dried concrete when the job is done.

By calculating ahead of timethe amount of concrete your project requiresand adding 10 percent to ensure that you dont run shortyoull avoid cold joints, which occur when part of your project dries before you can mix and add the concrete needed to finish aproject. Not only will you probably notice a visualdifference between the first and second batches of concrete, but thosecold joints will be weak spots where the concrete is more likely to break later. (For reference:A standard 80-poundbag yields 0.60 cubic feetof concrete, while a 60-poundbag yields 0.45 cubic feet, and a 40-poundbag yields 0.30 cubic ft.)

This may come as a surprise to you if youve ever mixed concrete in a wheelbarrow, where you do add water to a heap of dry concrete mix. The wheelbarrows shape necessitates adding the mix firstthe shallow sloped sides of a wheelbarrow make it too easy for water to slosh out when mix is thrown on top. But thats not a hard-and-fast rule for mixingall concrete. When youre working in a bucket, youll want to put the water in first (and you can do so withoutfear of losing any) in order to keep the dry concretemix from sticking to the bottom of the bucketand making it difficult to blend. Once youve filled the bucket with the amount of water recommended by the concrete manufacturer, gradually trowel in the dry mix until youre ready to blendit with your drill andHYDE StirWhipattachment.

In order to set correctly, the water and the dry concrete ingredients must be thoroughly combined. A good rule of thumb: Continue mixing with a hoe or blending with a StirWhip for three minutes afteryou no longer see any pockets of mix that are still dry or water pooling at the top. Otherwise,you could end up with undermixed concretethat once cured could be weak and prone to crumbling and cracking.

Concrete consistency is determined by slump, or how much the wet concrete settles after its been formed into a cone shape. To test the slump on your fresh batch, you can use a professional slump cone (available from home improvement stores) or a reasonable DIY facsimile made from a sturdy plastic cup with its bottom cut off. Dampen the inside of the cone, and place it so that its larger end is on a flat, nonporoussurface. Then, fill the conethrough its open top with thoroughly mixed concrete, tamping it down with your hands or (if the hole is too narrow) a rod as you go. When you lift the cone away,the wet concrete should slump to about half its original height if it is all-purpose concrete or one-third of its original height if its a more fluid, wet-set mix. If the slump is less than it should be, churn a little more water into the batch; a larger slump than expected requires additional dry mix. Test again before casting your project, and to ensure uniformity and strength in the finished product, dont move on until the mix has reachedadesirable consistency.

Disclosure: BobVila.com participates in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for publishers to earn fees by linking to Amazon.com and affiliated sites.

how to mix concrete in a bucket, wheelbarrow or mixer - the concrete network

how to mix concrete in a bucket, wheelbarrow or mixer - the concrete network

There are many creative do-it-yourself projects you can do around the home that require only a batch or two of concrete. While mixing your own concrete may seem like a daunting task, its easier than you might think if you have the right materials, equipment, and tools. Heres how to get started.

If you have never mixed a batch of concrete before, you can avoid all the trial and error by using a preblended, bagged concrete mix. (Two common brands are Quikrete and Sakrete.) These mixes are widely available at most home-improvement stores and from online suppliers and make it easy to mix a small batch of concrete without worrying about measuring and proportioning of the components. Most products only require the addition of water. You can also find bagged mixes formulated specifically for concrete countertops.

To determine how much bagged mix to buy requires knowing the approximate dimensions of your project. Bagged mixes are typically available in quantities ranging from 40 pounds up to 80 pounds. A standard 40-pound bag will yield about 0.30 cubic feet of concrete. Heres a calculator that can help you estimate the amount of concrete youll need for various projects.

As convenient as bagged mixes are, they arent practical for big jobs, such as a driveway or a large patio or pool deck. For these projects, its best to order concrete from a reputable ready-mix supplier (see Ready Mixed Concrete Ordering and Delivery).

How to do it: Dump the required amount of bagged mix into the bucket, form a depression in the middle of the mix, and then slowly add about three-quarters of the amount of water called for per the package directions. (If you dont need to use the entire bag, remember to adjust the amount of water accordingly.) Mix the material slowly with the trowel or paddle mixer and pour in the remainder of the water as needed. The less water you use, the stronger the concrete will be, so only add the amount necessary to obtain a workable consistency.

How to do it: Pour the number of bags of mix youre using into the drum and add about three-quarters of the water recommended on the package. Then turn on the mixer and mix until the components are combined, gradually adding the remaining water as necessary until you achieve a uniform consistency. Be careful not to add too much water; use only what you need for the mix to flow freely out of the drum. Also take care not to overload the mixer. Youll need at least 1 cubic foot of mixer capacity for each 80-pound bag of concrete mix.

Adding integral color to a plain-gray concrete mix is easy to do and will add interest to your concrete creations. Integral pigments come in powdered or liquid form and will color the entire batch of concrete, ensuring uniform color throughout. Typically liquid pigments are added to the mixing water and dry pigments are added toward the end of the mixing process, after the other materials are combined. Be sure to mix thoroughly after adding the pigment to avoid streaks and inconsistent color.

Adding too much water to a bagged mix is the most common mistake made when mixing concrete. Although water makes concrete workable, resist the temptation to add more water than you need. Many of the problems experienced with concrete are due to excessive water, including shrinkage, poor strength, and cracking (see Why Does Concrete Crack?).

Its also important to mix the concrete thoroughly, especially if youre mixing by hand. As a general rule of thumb, you want to obtain a uniform, moldable consistency similar to that of peanut butter or thick pancake batter. Be sure there are no dry pockets or clumps of material in your mix.

fast, accurate small-batch concrete mixing - fine homebuilding

fast, accurate small-batch concrete mixing - fine homebuilding

When we need to mix 60-lb. bags of ready-mix concrete, we make it easy on ourselves with the following procedure. We begin with a 5-gal. joint-compound bucket with about 3 in. of water in it (its easier to mix concrete if you put the water in first). Then we get out the 1/2-in. drill and chuck in a blade mixer with a shaft thats about 30 in. long. While one person runs the drill, the other person slowly pours the dry mix into the bucket.

With a little experimenting, we can normally get our water/aggregate mix close to perfect without having to add water or dry mix to the batch. Using this method, it takes us about 90 seconds to mix a sack of concrete.

The last time I was at a construction conference sponsored by a magazine which shall remain nameless, I asked an experienced tile setter (and thinset mixer) how to keep the bucket from spinning. He looked at me like... well, never mind... and suggested I just put one foot on the rim of the bucket.

american ready mix concrete | short load concrete for the contractor, remodeler and homeowner

american ready mix concrete | short load concrete for the contractor, remodeler and homeowner

We are a family owned and operated concrete supply company servicing all of Metropolitan Boston with quality concrete for the contractor, remodeler, homeowner and all tradesmen. Our concrete is made to withstand the New England climate with 3 ad mixes, air entrainment, a water reducer and plasticizer for smooth finishes.

HERE'S WHY: Other drum-style companies use barrel trucks that hold approximately 9 yards. If you only need three yards, you might be charged for a 4-6 yard minimum delivery, plus a possible clean out fee. And if there's leftover concrete, many other companies would need to dump the extra at your location.

Suppose you need just 1 yard of concrete at your location. It takes 60 of the 60lb bags to make 1 yard of concrete. The price per bag at national home improvement companies is approx. $4.30 per bag ($258 total).

*This comparison assumes that you are able to purchase bags for $4.30 at a major home improvement store AND that you are able to finish the job in one day! Otherwise, you'll need to account for another day's mixer and truck rentals.

ready mix concrete edmonton

ready mix concrete edmonton

Luigis has been in business for 41 years, a family owned and operated business located to serve in the greater Edmonton area, we specialize in: Excavation Removal and replacement, Cutting and coring, Sandblasting, Special styles such as stamped, exposed aggregate, and acid stained, Settlement and foundation repair, Design & engineering services

Mini Batch Concrete is perfect for stamping projects due to the small 5-14 mm aggregate size. This is our regular blend, but considered to be a premium blend with other concrete suppliers. No up charges with Mini Batch.

Mini Batch Concrete is perfect for stamping projects due to the small 5-14 mm aggregate size. This is our regular blend, but considered to be a premium blend with other concrete suppliers. No up charges with Mini Batch.

No matter what your project size, Mini Batch Concrete will supply ! We appreciate your business and take as much pride in batching a 1/4 cubic yard order, as we do on a 30 cubic Meter order. Nothing is to small.

No matter what your project size, Mini Batch Concrete will supply ! We appreciate your business and take as much pride in batching a 1/4 cubic yard order, as we do on a 30 cubic Meter order. Nothing is to small.

Mini Batch concrete finishes beautifully, and will accommodate any type of finish you require, from polished to stamped. Our concrete is tested on a regular bases and meets or exceeds all regulations.

Mini Batch concrete finishes beautifully, and will accommodate any type of finish you require, from polished to stamped. Our concrete is tested on a regular bases and meets or exceeds all regulations.

Pouring a hot tub pad that was 8 ft by 8 ft. Called around for options and from start to finish Mini Batch was informing, open, helpful, and guiding on every level. Price wasn't so bad either! Thanks to Mark for this accurate quoting and all information shared. As well a big thanks to Doc who delivered the product and made sure all went very well. I would highly recommend Mini Batch to anyone, they definitely are a cut above.

They were on time and It worked out great. I ordered it delivered and it was a smaller load to do a walkway. The guy that came was friendly and cleaned up the driveway and side walk in front of our house before he left. Great price and friendly, I would use them again

If you want a small amount of concrete you cannot beat this place. A fully loaded trailer has the weight balanced nicely on the trailer and pulls easy with a 1500 pickup and has automatic trailer brakes. Great pricing on the concrete which is great quality concrete, Friendly, knowledgeable, helpful staff, they can advise you on the strength (MPA) that you require for your application Ive used Mini batch concrete a few times now and I would highly recommend them

how to mix concrete

how to mix concrete

Concrete is a valuable building material around the home. Strong, adaptable, and durable, concrete can be used for patios, fence posts, flooring, footers, and slabs. You can even make kitchen countertops, bathroom vanity tops, and sinks out of concrete.

It is possible to mix smaller quantities of concrete by hand, without using an electric mixer. You will use just a garden hoe and shovel, a mixing basin such as a wheelbarrow, and a clean water source such as a garden hose.

Batch quantities with this method are limited to one or two 50-pound bags of concrete. Mixing more than 100 pounds of concrete with a hoe is physically difficult, plus the concrete may begin to harden before you can get the entire batch mixed.

Measuring out the exact amount of water is crucial to successful concrete mixing. Using not enough results in a dry, powdery mix that doesn't stick together or set properly. A more common error is to add too much water. While the pour may be successful, concrete mixed with too much water is weak and will soon crumble.

Concrete achieves 400 psi of compressive strength within about two hours and 1,000 psi within 24 hours. Concrete is considered fully cured in 28 days, but it is usually useable in about a day or two, depending on the application.

For a clean pour that minimizes dust, set the bag of concrete on-end in the wheelbarrow. Hold the top of the bag with one hand and use the other hand to slice off the top of the bag with the utility knife. Gently push the bag on its side and slowly pour out the concrete mix. Keep the mix sequestered on one side of the wheelbarrow or mixing basin for now.

The concrete should have a peanut butter-like consistency. It should not be soupy. If so, add a small amount of dry concrete to stiffen the mix. Nor should the mix be powdery. If so, add up to 2 cups of water, one cup at a time.

Drag the hoe once through the mix, with the hoe touching the bottom of the basin. The concrete groove's sides should stand firm. When you pat the concrete with the hoe or a shovel, it should remain flat.

Immediately after pouring the concrete, clean the tools (unless you will be mixing up more concrete). Put the tools in the wheelbarrow, spray them clean, then stand them up to the side to dry. Spray the inside of the wheelbarrow clean of all concrete residue.

mixking trailered concrete mixer | delcor equipment

mixking trailered concrete mixer | delcor equipment

The MixKing trailered concrete mixer can produce quality concrete in1.34M3batch sizes. Load it at your shop and mix on the way to your job site. Or mix right on site! The on board Port-A-Wash system makes clean up easy and saves both time and money on equipment maintenance. When towing a full load of concrete regularly a 2500 series truck is recommended. The GVWR of the MixKing when loaded is 10,000 pounds.

mixing concrete hand mixing | quikrete: cement and concrete products

mixing concrete hand mixing | quikrete: cement and concrete products

Step 4 Work the mix with a hoe, gradually adding water, until the mix reaches a uniform, workable consistency. Properly mixed concrete should look like thick oatmeal and should hold its shape when it is squeezed in a gloved hand.

Get in Touch with Mechanic
Related Products
Recent Posts
  1. diamensions of costable blocks in rotary kiln

  2. garnet replacing sand cement

  3. concrete floor grinder provide

  4. regeneration rotary kiln for gold project

  5. cost cost for setting up 1 million ton cement plant

  6. rotary dryer nickel

  7. rotary kiln and dryer metal of america rotary serv

  8. rotary dryer brands

  9. rotary kiln equipment rotary kiln

  10. quarry rotary cutters

  11. about stone quarry crusher machine

  12. high pressure grinig mill

  13. energy balance for raymond mill

  14. top sale unique design reliable inry flotation machine

  15. ore dressing plant equipment mining grinding ball mill

  16. economic environmental cobblestone stone crusher for sale in ukraine

  17. trommel screen solid waste

  18. cement making production line in delhi

  19. line crusher india cement

  20. economic portable bauxite rod mill sell in lviv