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Does the strength of cement decrease if it is stored for a long time?
Wiki User
∙ 14y ago
I assume you mean concrete which is a mixture of cement and coarse aggregate stone that has cured properly. There are many factors wich can reduce the strength of concrete over time but if the sample has been stored in an appropriate manner away from detrimental environmental influences the concrete should not weaken much over hundreds of years.
Wiki User
∙ 14y ago
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How long are cement chutes on cement trucks?
Normally about 1-2 meters each. Most trucks have 2 on the back and 2 stored somewhere else on the truck.
Will strength of concrete mix will decrease if hot water is used?
As long as the water is liquid, the strength of the finished product will not be diminished by the water temperature.
Does roofing cement dry hard and how long does it take to dry?
how long does roof cement to dry
How long can you store cement without using it?
Portland cement can be stored indefinitely provided it is not exposed to moisture. Most cement bags have a thin plastic lining to protect it from humidity, not rain, and is only meant to be temporary. Therefore, you should plan to use the cement product from an unopened, weather protected bag in weeks, not months. When the bag is overexposed it will result in "dead" cement, because it has already begun the chemical reaction with water, and reveals itself by hardening and clumping. Throw that bag away, it's dead.
What happens to a thief if he falls into a cement mixer?
The thief will most likely be encased in the cement solution, depending on how long the cement is ready to set.
Can you lay cement in cold weather?
You can lay cement in cold weathers as long as it isn't raining.
Can the use of excessive cement in concrete be harmful?
Yes. Cement will increase the heat of hydration. Than can have effects on curling slabs, better shorter-term streght at the expense of long-term strength, increased costs, increase water demand to name a few. Best put the right amount in for the job.
Is decrease in long term debt inflow or outflow?
Decrease in long term debt is cash out flow because long term debt decrease when cash payment is done and as cash goes out it is an outflow.
Could you live if you were stuck in cement?
A person could not live very long if they were stuck in cement. The cement would dehydrate a person rather quickly, which could kill a person.
When fiberglass bits are added to cement is it stronger?
No, as a bit can only hold very tiny pieces together and would not aid in strength. Reinforcement is usually achieved with long bendable bars as they can hold much larger sections together.
How long can salt and pepper be stored?
Salt and pepper can be stored indefinitely.
How does cement dry up?
When water is added it starts a process beginning with the formation of short hexagonal crystals. it is this process of crystal formation which begins the setting process and usually is substantially complete after 24 hours. However, the crystals continue to form and fill up the spaces for weeks and even months as long as the cement is not allowed to dry out. When mixing cement it is recommended to keep it wet for at least 3 days, when it reaches maybe 80% of its final strength, but a week to ten days is better. Cement will continue to harden for several years. The strongest cement you can get is that which sets up underwater and is never allowed to dry out
