Investigation of tubular centrifuged elements from concrete on weak carbonate aggregates of Ukrainian deposits
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2017, Vol 1, Issue 67
Abstract
In the South of Ukraine there are significant reserves of natural shell limestone. When cutting fine-grained blocks, a large number of small wastes is formed from it, which makes up to 50% of the processed rock mass. Therefore, the use of these wastes is an urgent task. The possibility of using limestone in concrete has been proved for the manufacture of large blocks, pressed bricks, wall panels and hollow core slabs. Studies of the use of carbonate concretes for the manufacture of centrifuged structures occupy a special place. The aim of this work is to study the physical and mechanical properties of centrifuged concrete, the influence of technological parameters on them, as well as the operation of pipe samples under the action of loads. Centrifuged concretes on carbonate aggregates of three deposits in the South of Ukraine were studied. As a result of the research technological parameters in the manufacture of pipes, the physical and mechanical characteristics of concrete were optimized, the possibility of using the existing norms for the calculation of concrete pipes was proved. At the same time features of pipe concrete are revealed: increased crack-resistance and rigidity. Conducted studies have shown that centrifuged concretes on carbonate aggregates can be used for the production of non-pressure and low-pressure water-bearing pipes, which are suitable for the use in hydrotechnical and hydromelioration construction.
Authors and Affiliations
L. D. , Diordienko, P. P. Semchuk
Keywords
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