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Winter concreting

Here we discuss the creation of normal conditions of concrete hardening in winter. This means that during the term of which is determined by the achievement of a given strength, to maintain the required temperature and humidity, using the internal heat or additional heat hardening:/ / Beton2006.ru / list / Rastvor-i-beton / Beton-BSG-M.html "> concrete.

As always, it all starts with the concrete mix, preparation of which in winter is a very responsible operation.The first thing to check carefully the quality and condition of the raw materials.For example, sand, crushed stone and gravel should not be contaminated and mixed with snow and ice.Therefore, they are stored on dry high ground, under sheds or in enclosed spaces.Of course, we can not allow the storage of cement in it got snow.

Cook:/ / Beton2006.ru / list / Rastvor-i-beton / "> solution should be in heated rooms.Domestic supply of heat in the concrete mixture creates, fueling its components.Heating the aggregates may be a single-stage, when both materials are thawed and heated, and two-stage, when some plants aggregates pre-thaw, and on the other & ndash;warmed to the design temperature (40 C).At the same time in the steam tank to heat water to the desired temperature & ndash;30 to 80 C.Cement additives and finely heat are prohibited.As for accessories, it should be cleared of snow and ice and warmed up with hot water or steam.Temperature of the concrete mix at the time of loading into the mixer shall be such as to provide the desired temperature of concrete mixture at the exit of the mixer and the placement of the form & ndash;With at least 5.

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