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V nastoacee vrema pomimo termosnyh metodov, v tom cisle s ispol’zovaniem protivomoroznyh i uskoraucih dobavok, uspesno primenautsa kontaktnye metody progreva betona. Odnim iz nih avlaetsa obogrev provolocnym metalliceskim provodom, sucnost’ kotorogo zaklucaetsa v obogreve takimi provodami, svezeulozennogo betona, kotorye pri propuskanii toka peredaut emu teplo. Kak pravilo, on primenaetsa dla skvoznogo...