Book chapter
Lightweight Concrete Design from Ultrasonic Pulse Velocity Test to Gene Expression Programming
Advances in Materials Science Research. Volume 60, pp.213-244
Advances in Materials Science Research, 60, Nova Science Publishers, Inc.
2023
Abstract
Lightweight concrete (LWC) can improve the performance of buildings against earthquakes due to the lower overall weight. This type of concrete has been used in the past in various constructions, and therefore, developing a practical and reliable standard for lightweight concrete mix design is indispensable. A LWC mix design has been presented in a few codes, such as ACI 211.2, however, due to the various properties of different types of lightweight aggregates in these standards, the proposed compressive strength and density cannot be commonly used. This chapter presents references for three types of lightweight concretes containing clay and natural (mineral) pumice aggregates. One hundred samples were made and tested. Three equations were derived through Gene Expression Programing (GEP) to estimate the compressive strength of each specific mixture, and a standard for propositioning and adjusting propositions of the concrete is discussed. Comparisons between the actual properties and their predicted counterparts indicate that the obtained derivations are useful, and reliable for designing lightweight concrete mixes. In addition, several models for estimating the compressive strength of the concrete using a non-destructive ultrasonic testing method are generated using GEP. Two types of ultrasonic pulse velocity tests - including direct and semi-direct techniques - were conducted. A high correlation coefficient for the equations derived from the GEP was obtained. The equations obtained from both techniques are compatible and, therefore, are accurate and simple to use in practical applications.
Details
- Title
- Lightweight Concrete Design from Ultrasonic Pulse Velocity Test to Gene Expression Programming
- Authors
- Saeed Jafari (Author) - Glasgow Caledonian UniversitySeyed Saeed Mahini (Corresponding Author) - University of the Sunshine Coast, Queensland, National Centre for Timber Durability and Design Life
- Contributors
- Maryann C Wythers (Editor)
- Publication details
- Advances in Materials Science Research. Volume 60, pp.213-244
- Series
- Advances in Materials Science Research; 60
- Publisher
- Nova Science Publishers, Inc.
- Date published
- 2023
- ISSN
- 2159-1997
- Organisation Unit
- National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 99981498602621
- Output Type
- Book chapter
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