Lightweight concrete with Algerian limestone dust: Part I: Study on 30% replacement to normal aggregate at early age

Cerâmica

S. Kitouni¹  H. Houari¹ 

[1] ,University of Constantine Department of Civil Engineering Laboratoire Matériaux et Durabilité des ConstructionsConstantine,Algeria

关键词: lightweight aggregate concrete;    limestone dust;    formulation;    flexural tensile strength;    Young's modulus;    compressive strength;    concreto com agregados leves;    cargas de calcário;    formulação;    módulo de elasticidade;    resistência mecânica;   

DOI  :  10.1590/S0366-69132013000400017

来源: SciELO

【 摘 要 】

The mechanical characteristics of the lightweight aggregate concretes (LWAC) strongly depend on the proportions of aggregates in the formulation. In particular, because of their strong porosity, the lightweight aggregates are much more deformable than the cementations matrix and their influence on concrete strength is complex. This paper focuses on studying the physical performance of concrete formulated with substitution of 30% of coarse aggregates by limestone dust. In this article an attempt is made to provide information on the elastic properties of lightweight concrete (LWC) from tests carried out under uniaxial compression conditions. The results of Young modulus, Poisson's ratio, and compressive and flexural tensile strength tests on concrete are presented. The concretes obtained present good mechanical performances reaching 34.99 MPa compressive strength, 6.39 MPa flexural tensile strength and in front of 36 MPa Young modulus.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License