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What are the effects of non potable water on concrete quality?
Non potable water can chemicals such as Chlorides, Sulfates and Alkalies which can chemically attack the concrete.
What is the effect of hydration on strength of a concrete?
Excess water (over hydration) causes weak concrete. The water in concrete is there to start a chemical process which results in the hardening process. The excess water is not used in the chemical process and results in a weakened concrete.
Is wet concrete heavier then dry concrete?
Concrete is made of a mixture of cement, aggregate (small stones), fine aggregate (sand), water and other chemical additives. When mixed the wet concrete will remain so for Most people assume that set concrete has no water in it, this is not so, as the water content helps bond the aggregates and cement, this process is known as Hydration. Concrete with no water in it would crumble to dust. Adding more water to the mix will make a concrete that is easier to work, while less water will produce a stronger, more durable concrete. After initial setting of the concrete, a slow amount of water loss is expected due to the concrete drying, it can take anything up to a year for water to stop evaporating slowly out of the concrete. So for this reason the answer to your question is yes, dry, set concrete will weigh less than wet concrete, but for anything up to a year it will keep getting lighter, due to waterloss.
Will Water damage concrete?
Not generally. If the concrete has a sealent on it no, but if you have a massive amount of water on unsealed concrete, the concrete will absorb the water and can make it swell and possibly crack. Answer The answer given above is totally incorrect. As far as only concrete is concerned i.e. plain concrete, the effect of water seepage is very little (depending upon the grade of concrete) whereas for RCC (reinforced cement concrete) water that seeps in corrodes the reinforcement and thus reduces the life of the structure. The defects that water seepage induces in concrete are as follows: 1) induces capillary formation (due tothe detiorating characteristics of water) 2) With this capillaries the concrete starts spalling out i.e the places where capillaries are formed, with even slight amount of stress that portion comes out and exposes the steel to the atmosphere 3) Concrete has a pH of about 12 -13. Thus it also reduces the pH of the concrete when salty water or when the concrete is exposed to marshy areas. 4) Reduces the overall strength of concrete 5) Reduces durability 6) Reduces permeabitlity to further water seepage 7) Results in ageing of structures
How can prevent water leak on a concrete roof?
You have a major problem. concrete is not water proof (liquid or vapor)or really even water resistent. If you look at a concrete pool or tank, a thin plaster coating provides the water proof layer - not the concrete. Your best bet is to remove the concrete, lay down a real water proof layer and reinstall the concrete. You can put so called water proof paints/materials on the cement, but they will only last a few years. In the mean time, you will have completely rotted the wood framing that supports the concrete slab.
What effect has the quantity of mixing water have upon the quality of concrete?
the strength of concrete is effected by water /cement ratio as the water/cement ratio increases the strength of the concrete decreases
What are the effects of non potable water on concrete quality?
Non potable water can chemicals such as Chlorides, Sulfates and Alkalies which can chemically attack the concrete.
What are the effects of non-potable water on concrete quality?
Non potable water can chemicals such as Chlorides, Sulfates and Alkalies which can chemically attack the concrete.
What can effect the strength of concrete?
The water/concrete ratio, not mixing it well enough, quality of raw materials, the age of the concrete, and the temperature and humidity of the area surrounding the concrete.
PH of water for making concrete?
The pH of water for making concrete is 6 to 8.The water should be free from organic matters.Sea water should not be used for making concrete.Potable water is used for making concrete.
What is the ratio for vdf flooring?
The Vacuum Dewatered Flooring or VDF Flooring is a system for laying high quality concrete floors where the key is Dewatering of Concrete by Vacuum Process wherein surplus water from the concrete is removed immediately after placing and vibration, thereby reducing the water: cement ratio to the optimum level.
Does concrete absorb water?
Yes, concrete can absorb water.
How much time take to set the concrete?
Rockbottom period is 7 days once quality concreting is done and meticulous watering the concrete , otherwise normally 21 days is recokened as the period for curing the concrete( that is, setting the concrete) to take care of failure to adhere to correct processing of laying concrete and curing with water .
What are the recommended proportions for creating a high-quality gypsum concrete mix?
The recommended proportions for creating a high-quality gypsum concrete mix typically include 1 part water to 2.5 parts gypsum powder. This ratio helps ensure a strong and durable final product.
What has the author American Concrete Institute written?
American Concrete Institute. has written: 'Guide for concrete inspection' -- subject(s): Concrete, Quality control, Inspection
What are the best techniques for achieving a high-quality concrete floor finish?
The best techniques for achieving a high-quality concrete floor finish include proper surface preparation, using high-quality materials, applying the right amount of water during mixing, using the correct tools for finishing, and allowing sufficient time for curing.
What has the author Ralph P Andrew written?
Ralph P. Andrew has written: 'Proceedings of a Symposium of Concrete Quality, London, November 1964' -- subject(s): Concrete, Concrete construction, Congresses, Quality control
