The required amount of cement for making concrete cube 1

Under construction, restoration or repair, we are constantly confronted with the works in which the concrete mix is ​​used.But how to cook it?It is necessary not only to purchase the right amount of necessary materials, but to make the correct batch, which means, inter alia, and to determine the optimal ratio of the equity component.

What causes failure to comply with the proportions, it is known - the cracks in the screed or in the base of the structure, the fragility of the masonry and the like "surprises".To avoid such troubles, you must first decide on the following points:

firstly, what is meant a solution?For example, the concrete mixture to fill the tape "Monolith" for the foundation and for the bonding of bricks, cellular blocks are prepared in different ways.In other words, what grade of concrete in the end turn out to be?Here you useful information on concrete strength grades.

secondly, which characteristics are used components?

It should thoroughly understand the last paragraph.What is involved?

to rubble (gravel)

Weight pellet size, flakiness, pollution, humidity levels.

sand

same (except flakiness) plus the presence of various contaminants.

for cement

Mark, the "setting", the date of manufacture.

can give some indicative data on cement consumption.But we must understand that they allow only a rough estimate of the amount in the "cube" of the solution, as derived from the averages, without taking into account the specifics of the work:

Practical recommendations

is necessary to pay attention to the cement storage period.Experts say that six months after manufacturing it loses up to 30% of its qualities.Therefore, when using the "old" product of its share in the total weight should be increased to the strength of concrete were obtained by calculation.

That is why professionals recommend use in the construction of "fresh" cement and products, has been stored for some time, be used for the restoration, repair (sealing of joints, gaps) or the construction of secondary structures.And, provided that in the future they will not be subject to considerable loads.The fact that, for binder issued more than one month ago, it is difficult to determine the exact relationship with other components.

lower cement brand, the more it needs to be added in the preparation of the mixture.

for pouring foundations, experts advise to follow this ratio (a measure - bag): 1 (binder) + 3 (sand) + 5 (filler).This solution is considered to be universal.

To get a guaranteed strength of the concrete, it is better to add in a mixture of 1 kg of cement too much than not to report it.