Publication detail

Second-Order Effects in Lightweight Aggregate Concrete Slender Columns

KOŁODZIEJCZYK, E. WAŚNIEWSKI, T. STARÝ, V. DVOŘÁK, R. RABENDA, M.

Original Title

Second-Order Effects in Lightweight Aggregate Concrete Slender Columns

Type

journal article in Web of Science

Language

English

Original Abstract

This paper covers the analysis of the behavior of columns made of LWAC (Lightweight Aggregate Concrete), which can be used as a substitute for normal-density concrete. This work presents an experimental research program focused on second-order effects in slender elements (λ = 74) made of LWAC and normal-density concrete tested under eccentric load. Elements with two ratios of longitudinal reinforcement (0.9%, 2.3%) were considered. Despite the similar compressive strengths of the concrete, the significantly different moduli of elasticity of the two types of concrete caused the lightweight concrete columns to show higher displacements, leading to their lower load bearing capacity. This disproportion was more pronounced for low longitudinal reinforcement. In the second part of this experiment, the behavior of the columns was simulated using models taken from the literature. The analysis showed that the models often do not accurately predict the elastic modulus or LWAC limit strain of concrete, so when trying to predict the behavior of this type of element accurately, these parameters should be determined experimentally.

Keywords

lightweight aggregate concrete; LWAC; reinforced concrete; RC columns; second-order effects

Authors

KOŁODZIEJCZYK, E.; WAŚNIEWSKI, T.; STARÝ, V.; DVOŘÁK, R.; RABENDA, M.

Released

16. 3. 2025

Publisher

MDPI

Location

Basel, Switzerland

ISBN

1996-1944

Periodical

Materials

Year of study

18

Number

6

State

Swiss Confederation

Pages from

1

Pages to

23

Pages count

23

URL

https://www.mdpi.com/1996-1944/18/6/1312

BibTex

@article{BUT197457,
  author="Ewelina {Kołodziejczyk} and Tomasz {Waśniewski} and Vojtěch {Starý} and Richard {Dvořák} and Martyna {Rabenda}",
  title="Second-Order Effects in Lightweight Aggregate Concrete Slender Columns",
  journal="Materials",
  year="2025",
  volume="18",
  number="6",
  pages="1--23",
  doi="10.3390/ma18061312",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/18/6/1312"
}