Journal article
Lightweight concrete design from ultrasonic pulse velocity testing to gene expression programming
Construction and Building Materials, Vol.139, pp.93-100
2017
Abstract
The use of lightweight concrete (LWC) in earthquake resistant buildings is beneficial because of the weight and mass reduction of the structures. LWC has been used in the construction industry for many years and while attempts have been made to develop a practical and reliable code for lightweight concrete design worldwide a satisfactory, practical standard for mix design is required. There are a few standards which present methods for designing the mix of LWC such as ACI 211.2. However, in these standards the proposed compressive strength and density determinations cannot be used for all types of lightweight aggregates. The aim of this study is to provide references for three types of lightweight concretes containing clay and natural (mineral) pumice aggregates with the maximum nominal sizes of 12.7 mm (½ in.) and 19.2 mm (¾ in.) respectively. With this intent, hundred specimens of lightweight concrete were made and then tested in the laboratory using these aggregates. After presenting a standard for propositioning and adjusting propositions of the concrete mix three equations were derived using Gene Expression Programing (GEP) to obtain the compressive strength of a specific mixture. Comparison between the actual properties and their predicted counterparts indicated that the proposed derivations are a useful and reliable practical method for use by practicing engineers when designing lightweight concrete mixes.
Details
- Title
- Lightweight concrete design from ultrasonic pulse velocity testing to gene expression programming
- Authors
- Saeed Jafari (Author) - Shiraz University of TechnologySaeed Mahini (Corresponding Author) - University of New England
- Publication details
- Construction and Building Materials, Vol.139, pp.93-100
- Publisher
- Elsevier BV
- DOI
- 10.1016/j.conbuildmat.2017.01.120
- Organisation Unit
- National Centre for Timber Durability and Design Life; University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99725896402621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Construction & Building Technology
- Engineering, Civil
- Materials Science, Multidisciplinary
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