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Materials and Structures

, Volume 42, Issue 5, pp 581–591 | Cite as

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

  • Per GoltermannEmail author
Original Article

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.

Keywords

Load-carrying capacity Walls Lightweight aggregate concrete Lightly reinforced Type testing 

Notations

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

Notes

Acknowledgement

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

References

  1. 1.
    Rambøll BJ (1955) Rationelt Byggeri (Rational construction). Teknisk ForlagGoogle Scholar
  2. 2.
    Henningsen HM (1971) Boligministeriel godkendelse af etagehøje elementer af letklinkerbeton med transportarmering (Building Ministerial approval of full-height elements of lightweight concrete with transport reinforcement), 1 SeptemberGoogle Scholar
  3. 3.
    DS 4202 (1977) Dansk Ingeniørforenings norm for letbeton, bærende vægge (Danish Engineering Associations code-of-practice for lightweight concrete, load-carrying walls). Dansk IngeniørforeningGoogle Scholar
  4. 4.
    DIN 4232 (1987) No fines lightweight concrete walls. Design and ConstructionGoogle Scholar
  5. 5.
    EN 1520 (2002) Prefabricated reinforced components of lightweight aggregate concrete with open structureGoogle Scholar
  6. 6.
    Olesen SØ (1971) Strength of lightweight concrete wall panels. CEB/FIP-Colloquium on Lightweight Concrete, CopenhagenGoogle Scholar
  7. 7.
    Goltermann P (1995) Lightweight concrete walls and columns: determining the load-carrying capacity. Nord Concr Res 16:10–26Google Scholar
  8. 8.
    Goltermann P, Larsen H, Ingholt NU (1994) Strength and stiffness relations in lightweight aggregate concrete with open structure. Nord Concr Res 15:35–46Google Scholar
  9. 9.
    Larsen H (2002) Bestemmelse af arbejdslinier for letklinkerbeton og porebeton (Determination of stress–strain curves for lightweight aggregate concrete and autoclaved, aerated concrete). Report BYG-DTUGoogle Scholar
  10. 10.
    Nielsen MD, Gharib H, Nedelkovski S (2003) Laboratory project. Technical University of Denmark, BYGGoogle Scholar
  11. 11.
    Holm RW, Haugard-Jensen LP, Jensen HP (2004) Laboratory project. Technical University of Denmark, BYGGoogle Scholar
  12. 12.
    Kragh-Poulsen JC, Wetche JAP (2006) Laboratory project. Technical University of Denmark, BYGGoogle Scholar
  13. 13.
    EN 1740 (1998) Performance test for prefabricated reinforced components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure under predominantly longitudinal load (vertical components)Google Scholar
  14. 14.
    EN 1354 (1997) Determination of compressive strength of lightweight aggregate concrete with open structureGoogle Scholar
  15. 15.
    EN 1521 (1997) Determination of flexural strength of lightweight aggregate concrete with open structureGoogle Scholar
  16. 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
  17. 17.
    DS 434.5 (1989) Bærende elementer af letbeton med porøse tilslag. Elasticitets-modul (Load-carrying elements of lightweight aggregate concrete. Modulus of elasticity)Google Scholar
  18. 18.
    DS 434.4 (1989) Bærende elementer af letbeton med porøse tilslag. Bøjningstrækstyrke (Load-carrying elements of lightweight aggregate concrete. Flexural strength)Google Scholar
  19. 19.
    EN 1352 (1997) Determination of static modulus of elasticity under compression of autoclaved aerated concrete or lightweight aggregate concrete with open structureGoogle Scholar

Copyright information

© RILEM 2008

Authors and Affiliations

  1. 1.Department of Civil EngineeringTechnical University of Denmark, BYGLyngbyDenmark

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