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Influence of steel fibres addition on mechanical and selected rheological properties of steel fibre high-strength reinforced concrete

Bywalski C., Kamiński M., Maszczak M., Balbus Ł.

Archives of Civil and Mechanical Engineering

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2015

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Vol. 15, no. 3

742--750

EN

The paper discusses the mechanical and selected rheological properties of steel fibre high-strength reinforced concrete (SFHSRC). The creep deformation in compression, total shrinkage strain, compression strength, longitudinal modulus of elasticity and tensile strength of steel fibre high-strength reinforced concrete have been presented in the research. Steel reinforcements with a length of 13 mm and a diameter of 0.2 mm have been used. The content of fibres in 1 m3 of the concrete mix was 0, 78.5, 157 and 235.5 kg. Four batches of composite materials with different mixture compositions have been tested. The average compressive strength ranged from 128.2 to 147.7 MPa. The functional relations describing the increase of shrinkage and creep deformation in time have been discussed. The summary contains conclusions related to the rheological deformation of steel fibre high-strength reinforced concrete and the effects of steel fibre content on the mechanical properties of such composite materials.

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Remont komina żelbetowego wysokości 160 m w wyniku uszkodzeń powierzchni zewnętrznej

Kamiński M., Maszczak M.

Materiały Budowlane

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2014

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nr 5

14--15

PL

Opisano stan techniczny komina żelbetowego wysokości 160 m, uszkodzenia konstrukcji i zabezpieczeń antykorozyjnych zewnętrznej powierzchni płaszcza, a następnie przedstawiono analizę przyczyn powstałych uszkodzeń oraz zalecenia dotyczące ich naprawy.

EN

The paper describes a technical condition of a reinforced concrete chimney with a height of 160 m. The damage both to the structure and to selected protection measures of an outer surface of the shell are then presented. The damage are analyzed and the paper concludes with some recommendations of damage repair.

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Zastosowanie granulatu gumowego w betonie

Kamiński M., Bywalski C., Maszczak M.

Materiały Budowlane

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2013

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nr 3

30--31

EN

The paper discusses an overview of Polish experience of types of recycled rubber waste and their applications in the construction industry. The aim of the experiment conducted by the authors was to assess an effect of an additive of rubber granulate on the properties of concrete, and thus verify the potential use of rubber waste. The test results showed that the additive of rubber granulate has a significant effect on the properties of concrete in comparison with the concrete without such an additive.