Quality of Water used for Concrete Mixes-Concrete Technology
Use of Sea Water for Mixing Concrete Mixes. Seawater contains a small quantity of sodium and potassium salt.The salinity of seawater is 3.5 percent.These salt can be reacted with reactive aggregate and alkali cement. Therefore sea water should not be used for the mixing of concrete if the aggregate is potentially reactive.
Sea Water for Mixing Concrete | The Construction Civil
Sea Water for Mixing Concrete. It is advisable, as stated above, to use clean water fit for drinking purposes for making cement concrete.However, at places where sea water is available in abundance and potable water is costly, the sea water can be used for making cement concrete.
Apr 23, 2014 · In general, less water produces better concrete. However, concrete needs enough water to lubricate and provide a workable mixture that can be mixed, placed, consolidated and finished without problems.
How Much Water Is for 60-pound Concrete Mix? | Hunker
Packaged concrete is a premixed combination of cement, sand and gravel. It is readily available at most home and garden centers and often sold in 60-pound bags. To prepare packaged concrete mix, all you have to do is add water. Determining the exact amount of water, however, is not such a simple process.
Quality of Water for Making Concrete: A Review of Literature
6) ASTM 1602M-06Standard test method for mixing water used in the production of hydraulic cement concrete. 7) EN 1008-2002(E)Mixing water for concrete – Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete.
the table below to select the corresponding water weight and entrained air for the concrete mix design. Approximate mixing water and air content requirements for different slumps and nominal maximum sizes of aggregates Water, lb/cy (Kg/m^3), of concrete for indicated nominal maximum sizes of aggregate Slump, in (mm) 3/8 in (9.5) 1/2 in (12.5)
The importance of water cement ratio in concrete countertop ...
The water to cement ratio largely determines the strength and durability of the concrete when it is cured properly. The w/c ratio refers to the ratio of the weights of water and cement used in the concrete mix. A w/c ratio of 0.4 means that for every 100 lbs of cement used in the concrete, 40 lbs of water is added. Typical Water-Cement Ratios ...
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 ...
Working with hard and soft water| Concrete Construction Magazine
A. Richard Gaynor replied to this question by explaining the effects of batching and mixing techniques. If the hard water is drinkable and meets the chemical requirements of ASTM C94 Table 2, and the concrete made with hard and soft water have the same air content, there is a problem in measuring the water, batching the water, or obtaining ...
Lay a sheet of 6 mil plastic on your garage floor. Build a small square form from wood that will hold the concrete. Lay this form on the plastic. Mix the bag of concrete mix with the required water and mix until it's a uniform texture. Remember, you can always add more water. Add the water in stages as you mix. Pour the mixture into the form.