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An estimated prediction of the deformability of mineral wool (MW) slabs under long-term compressive stress

Gnip, I. / Vaitkus, S. / Vėjelis, S.

Highlights ► Statistical processing of experimental values. ► Empirical equations to evaluate the strength and deformability characteristics. ► Prediction of creep strains (10years) under short-term compression.

Abstract This paper presents the results of testing the strength and deformability of mineral wool slabs used for insulating flat roofs, facades, cast-in-place floors and external basement walls as well as for sound insulation in the floor slabs of buildings. The empirical equations for calculating the stress $σ_{10 %}$ , tangential modulus of elasticity E and ultimate relative strain ɛcr (which, when exceeded, causes a considerable strain increase) of mineral wool slabs under short-term compression are provided. A regression model of the interrelationship between the predicted pointwise values of creep strains for a lead time of 10years and parameters such as the density, long-term compressive stress σc =0.35· σ 10% and ultimate relative strain ɛcr of slabs under short-term compression is suggested.

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An estimated prediction of the deformability of mineral wool (MW) slabs under long-term compressive stress

Gnip, I. / Vaitkus, S. / Vėjelis, S.

Highlights ► Statistical processing of experimental values. ► Empirical equations to evaluate the strength and deformability characteristics. ► Prediction of creep strains (10years) under short-term compression.

Abstract This paper presents the results of testing the strength and deformability of mineral wool slabs used for insulating flat roofs, facades, cast-in-place floors and external basement walls as well as for sound insulation in the floor slabs of buildings. The empirical equations for calculating the stress $σ_{10 %}$ , tangential modulus of elasticity E and ultimate relative strain ɛcr (which, when exceeded, causes a considerable strain increase) of mineral wool slabs under short-term compression are provided. A regression model of the interrelationship between the predicted pointwise values of creep strains for a lead time of 10years and parameters such as the density, long-term compressive stress σc =0.35· σ 10% and ultimate relative strain ɛcr of slabs under short-term compression is suggested.

An estimated prediction of the deformability of mineral wool (MW) slabs under long-term compressive stress

Gnip, I. / Vaitkus, S. / Vėjelis, S.

Highlights ► Statistical processing of experimental values. ► Empirical equations to evaluate the strength and deformability characteristics. ► Prediction of creep strains (10years) under short-term compression.

Abstract This paper presents the results of testing the strength and deformability of mineral wool slabs used for insulating flat roofs, facades, cast-in-place floors and external basement walls as well as for sound insulation in the floor slabs of buildings. The empirical equations for calculating the stress $σ_{10 %}$ , tangential modulus of elasticity E and ultimate relative strain ɛcr (which, when exceeded, causes a considerable strain increase) of mineral wool slabs under short-term compression are provided. A regression model of the interrelationship between the predicted pointwise values of creep strains for a lead time of 10years and parameters such as the density, long-term compressive stress σc =0.35· σ 10% and ultimate relative strain ɛcr of slabs under short-term compression is suggested.

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Title:

An estimated prediction of the deformability of mineral wool (MW) slabs under long-term compressive stress

Contributors:

Gnip, I. (author) / Vaitkus, S. (author) / Vėjelis, S. (author)

Published in:

Construction and Building Materials ; 38 ; 675-680

Publication date:

2012-07-21

Size:

6 pages

ISSN:

DOI:

https://doi.org/10.1016/j.conbuildmat.2012.07.043

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Mineral wool slabs , Short-term and long-term compression , Creep strain , Prediction

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