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Load-carrying capacity of lightly reinforced, prefabricated walls of lightweight aggregate concrete with open structure

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Abstract

The paper presents and evaluates the results of a coordinated testing of prefabricated, lightly reinforced walls of lightweight aggregate concrete with open structure. The coordinated testing covers all wall productions in Denmark and will therefore provide a representative assessment of the quality actually produced. Existing and new formulas for the capacity are evaluated by comparison to the test results and a new model with a good correlation with the test results is presented.

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Abbreviations

b:

Width of element

E0 :

Initial modulus of elasticity

ES :

Secant modulus of elasticity

ET :

Tangential modulus of elasticity

eg :

Eccentricity due to geometrical imperfections

eN :

Eccentricity of N

et :

Total eccentricity in most critical cross-section

fc :

Compressive strength

ft,flk :

Flexural tensile strength

L:

Geometrical length of element

Lc :

Columns length equal to distance between charniers in test rig

LAC:

Lightweight aggregate concrete with open structure

N:

Axial compressive load

Neu :

Critical Euler-load

Nexp :

Experimental load-carrying capacity

Nu :

Estimated load-carrying capacity

t:

Thickness of element

u:

Deformation of columns due to bending

δ:

Coefficient of variation

ε:

Compressive strain

εc :

Compressive strain at the peak of the stress–strain diagram

λ:

Slenderness ratio

ρ:

Dry density

σ:

Compressive stress

References

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  3. DS 4202 (1977) Dansk Ingeniørforenings norm for letbeton, bærende vægge (Danish Engineering Associations code-of-practice for lightweight concrete, load-carrying walls). Dansk Ingeniørforening

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  5. EN 1520 (2002) Prefabricated reinforced components of lightweight aggregate concrete with open structure

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  14. EN 1354 (1997) Determination of compressive strength of lightweight aggregate concrete with open structure

  15. EN 1521 (1997) Determination of flexural strength of lightweight aggregate concrete with open structure

  16. Goltermann P (2004) Vurdering af uarmerede vægges bæreevne. Fase 1. Lodret belastede vægge (Assessment of load-carrying capacity of walls with no structural reinforcement. Phase 1. Vertically loaded walls). Rambøll. http://www.bih.dk

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  19. EN 1352 (1997) Determination of static modulus of elasticity under compression of autoclaved aerated concrete or lightweight aggregate concrete with open structure

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Acknowledgement

The author would like to thank the Danish Producers Association BIH for their support and for the use of their test results.

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Authors and Affiliations

  1. Department of Civil Engineering, Technical University of Denmark, BYG, Bygning 118, Brovej, 2800, Lyngby, Denmark

    Per Goltermann

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  1. Per Goltermann
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Correspondence to Per Goltermann.

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Goltermann, P. Load-carrying capacity of lightly reinforced, prefabricated walls of lightweight aggregate concrete with open structure. Mater Struct 42, 581–591 (2009). https://doi.org/10.1617/s11527-008-9404-8

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  • DOI: https://doi.org/10.1617/s11527-008-9404-8

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