Effect of rise in temperature (250°C) on the physico-mechanical properties of rubber mortars

• Autorzy: Assia Aidoud , Messaouda Boutahir Born Bencheikh , Salima Boukour , Ouassila Bahloul

Identyfikatory

DOI

10.2478/adms-2023-0016

• Języki publikacji: EN

Abstrakty

EN

The recovery and use of waste in the field of civil engineering, particularly in construction materials, is one of the most prominent solutions for preserving the environment. In order to evaluate the results obtained, it is necessary to study the evolution of the properties of these new materials in the different environments where they can live or be exposed, and why not develop an effective method of treatment of such materials for the possibility of their use even in the field of precast concrete.The objective of this work is to study the effect of the increase in temperature as a living environment or as a treatment on the physico-mechanical properties of a crumbled mortar, a potential source of many environmental and economic problems.Hence the screening and the possibility of using these new mortars with sufficient physico-mechanical properties for masonry and why not for prefabrication.The formulation of the mixturesbased on the substitution of dune sand by crumb rubber, at different weight contents 10, 20 and 30%. Consequently, prismatic specimens (4x4x16) cm3subjected to the temperature (250°C), with a speed of 2°C/min followed by a one-hour plateau at the target temperature then cooling to the ambient temperature.The results obtained show that the maximum mass loss is 5% for 30% substitution and that for 10% substitution the absorption by total immersion decreased by more than two thirds and the porosity accessible to water decreased by more than half. The compressive strength increases by 8.9% for 10% substitution and the minimum decrease in tensile strength by bending is at the same substitution of an order of 26.9%.Using the analysis of variance, the influence of the substitution of dune sand by rubber crumbs and of the rise in temperature to 250°C on the behavior of the mortar acquired. Patterns developed by response surface methodology were significant for all p-value substitutions <5%. The results of the numerical optimization showed that the best mixture couldobtained by replacing 30% of dune sand with rubber crumb and subjecting the hardened mortar obtained from this mixture to the temperature of 135°C.

Słowa kluczowe

EN

thermal treatment; rubber powder; physical properties; prefabrication; response surface

PL

obróbka termiczna; miał gumowy; właściwości fizyczne; prefabrykacja; powierzchnia odpowiedzi

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2023
• Tom: Vol. 23, nr 3(77)
• Strony: 47--60
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Assia Aidoud

• University 8 May 1945 Guelma, Faculty of Science and Technology, Department of Civil Engineering and Hydraulics, LGCH, Guelma, Algeria

autor

Messaouda Boutahir Born Bencheikh

• University 8 May 1945 Guelma, Faculty of Science and Technology, Department of Civil Engineering and Hydraulics, LGCH, Guelma, Algeria

autor

Salima Boukour

• Abdelhafid Boussouf Mila University Center, Faculty of Science and Technology, Department of Civil Engineering, Mila, LGCH Guelma, Algeria

autor

Ouassila Bahloul

• University Mustefa Benboulaid Batna 2, Faculty of Technology, Department of Civil Engineering, Batna, Algeria

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).