Can You Use A Cement Mixer For Cob?

A concrete mixer will only tumble the materials round and round. This works for mixing very wet material such as concrete and some earthen plasters. A concrete mixer will not mix cob.

How do you make a cob mixture?

A good ratio of straw to clay and aggregate is one five-gallon bucket of straw compressed, to five buckets of dry ingredients. Keep repeating this process until the straw is used up, constantly turning and stomping, until all the straw is thoroughly mixed in and is the same color as the cob.

What’s the difference between a mortar mixer and a concrete mixer?

A concrete mixer combines concrete ingredients while a mortar mixer combines mortar for road construction purposes. Both concrete and mortar differ in terms of their consistency. Cement has a thinner consistency when mixed, while mortar has a thicker consistency because its most significant component is water.

Can you use a cement mixer to mix clay?

It will not mix clay as fast or as thoroughly as the blade mixers, nor will it efficiently blend clay powder with slip or dried clay chunks, but it does produce good quality clay with vastly less time and effort than hand methods.

Is cob as strong as concrete?

Cob has unique properties which make it as strong and more durable than concrete (see ‘How is Cob so strong’) the oldest Cob building is over 10,000 years old. Cob is resistant to fire, termites and mould.

What are the disadvantages of concrete mixer?

Requires huge initial investment. Not suitable for small projects (less quantity of concrete is required). Need an effective transportation system from the batching plant to the job site.

Is it worth buying a cement mixer?

If you’re doing a simple crack repair or pouring concrete in a small area, you don’t need a concrete mixer. You can use a wheelbarrow or bucket to mix your concrete, and you’ll save yourself potentially hundreds of dollars. If your project is much bigger, then consider a concrete mixer.

Is it worth hiring a cement mixer?

As well as making your life much easier, hiring a concrete or cement mixer will ensure you achieve a better consistency than if you worked the material with a spade in a wheelbarrow or on a board.

What happens if you mix soil and cement?

Soil-cement is a simple but highly-compacted mixture made up of soil, cement, and water. As the cement is mixed with the other two elements, it strengthens the properties of the soil, giving the final material its durable qualities.

Is clay as strong as cement?

Concrete Blocks Vs Clay Bricks
Clay bricks are 2 ½ to 3 times stronger than the concrete bricks. It is important to note that the strength of a brick wall depends on the quality of the mortar holding the blocks together.

What happens when you mix clay with concrete?

It has been widely reported that presence of clays in cement reduces the compressive strength and increases shrinkage in the resulting concrete.

How thick do cob walls need to be?

How thick should cob walls be? The thinner that cob walls are the less load bearing capacity and thermal mass that they will have. I recommend the width of cob walls be between 18 to 24 inches as a standard. This gives plenty of load bearing capacity for a one story building and plenty of thermal mass.

Do you need sand for cob?

There are some rare areas where you will find soil that naturally contains the right amount of aggregate-to-clay ratio to make cob, but this is not usually the case. One of the main guidelines for choosing sand for your cob mixture is to use a rough and coarse sand that has many different particle sizes included in it.

How long does it take for cob to cure?

It can take months to years for your cob to dry out fully. The bulk of the moisture will dry out in the first year, but it will not fully cure for 1-2 years beyond that. Once you’ve built your cob house and added your roof, allow it to breathe for several months before moving in.

What are the disadvantages of a cob house?

Disadvantages:

• Labour intensive.
• Relatively slow to build.
• Obtaining a mortgage from lending institutions is difficult.
• Cob walls cannot be laid in wet or freezing weather.
• Insects, notably termites and small rodents can burrow into the walls and weaken them.

What happens if cob gets wet?

Cob is very resistant to weathering. Because of its porous nature, it withstands long periods of rain without weakening. However, too much exposure is best avoided by the “boots and cap” strategy: wide roof eaves to protect the walls and an impervious foundation.

Is 20 minutes too long to boil corn on the cob?

Boiling time
A lot of people use a 20 minute rule, but it’s really excessive unless you’re cooking tough old corn. Think of it like cooking a steak until it’s well-done – you can do it, but it’ll be tougher. In the same way, fresh corn will lose some of its texture and flavor after 20 minutes of boiling.

Does corn on the cob need to be soaked before cooking?

Do you have to soak corn on the cob before grilling? No, it does not have to be soaked before grilling. However, if you are grilling your corn in the husk, it’s a good idea to soak your corn so that the husks do not burn or catch fire.

Can you vacuum seal corn on the cob without cooking it?

You have to blanch corn on the cob before vacuum sealing it to stop the enzyme activity, which can break down the flavor of the corn over time.

How long can you run a concrete mixer?

Once you start mixing, you have approximately one hour to mix and place all of your materials to avoid cold joints. With each round of mixing taking approximately 5 minutes, you can complete a maximum of 12 rounds of mixing in that timeframe.

How long does cement last in a cement mixer?

Concrete can last for 3 hours in ready mix truck. If it is not unloaded it on time the slump value of the concrete changes. Solidification of concrete takes long time so to the max only slump changes.