Employment and Characterization of Lightweight Concrete

Employment and Characterization of Lightweight Concrete

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2019 by IJETT Journal
Volume-67 Issue-7
Year of Publication : 2019
Authors : Gustavo H. M. Serqueira, Daniela A. M. Barcelos , Hélvio J. Barcelos, Adeilton S. Umbelino, Petrus A. Neto, Raimundo C. S. Júnior
DOI :  10.14445/22315381/IJETT-V67I7P212

Citation 

MLA Style: Gustavo H. M. Serqueira, Daniela A. M. Barcelos , Hélvio J. Barcelos, Adeilton S. Umbelino, Petrus A. Neto, Raimundo C. S. Júnior"Employment and Characterization of Lightweight Concrete" International Journal of Engineering Trends and Technology 67.7 (2019): 58-63.

APA Style:Gustavo H. M. Serqueira, Daniela A. M. Barcelos , Hélvio J. Barcelos, Adeilton S. Umbelino, Petrus A. Neto, Raimundo C. S. Júnior(2019). "Employment and Characterization of Lightweight Concrete"International Journal of Engineering Trends and Technology, 67(7), 58-63.

Abstract
The manufacture of lightweight concrete is economically viable because it presents low values of specific mass, which significantly reduces the proper weight of the cementitious elements, influencing the active loading in the foundation structures. In addition, the use of lightweight structural concrete contributes to increased productivity since transport and launch operations are facilitated due to their lower self-weight. However, despite being an alternative material to conventional concrete already used in several countries, the technology in Brazil is still little spread. This article shows the worldwide use of lightweight concrete over the years and describes some of the works that employed it in its construction. Also presented is the characterization of lightweight concrete in the fresh and hardened states. The main physical properties, such as specific mass, index of consistency and water absorption, mechanical properties of compressive strength, tensile and modulus of elasticity, thermal properties of thermal conductivity and thermal diffusivity of light concrete are exposed and analyzed. The work also describes the causes of lightweight concrete having less resistance to aggressive agents and presents pore connectivity as a fundamental prerequisite for the deterioration of structures. Aspects related to production, dosage, transport, launch and densification are also addressed, highlighting the phenomenon of segregation, which constitutes a point of attention that demands care to avoid its occurrence.

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Keywords
Lightweight concrete, employment, characterization, properties