Lightweight Concrete Bridges: Recent Data Reveal New Opportunities
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Bibliographic Details
| Author(s): |
Reid Wilson Castrodale
(Castrodale Engineering Consultants, Concord, NC, USA)
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016 | ||||
| Published in: | IABSE Congress Stockholm, 2016 | ||||
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| Page(s): | 2084-2092 | ||||
| Total no. of pages: | 9 | ||||
| Year: | 2016 | ||||
| DOI: | 10.2749/stockholm.2016.2084 | ||||
| Abstract: |
Recent tests and production experience reveal that structural lightweight concrete made with lightweight aggregates manufactured in the USA has potential benefits for the design and construction of bridges. Lightweight aggregates and their properties are briefly introduced; then engineering properties of lightweight concrete made with these aggregates are presented using recent data. Material properties discussed include density, design compressive strength (up to 70 MPa), tensile strength (approximately equal to strengths expected for normal weight concrete), modulus of elasticity, creep and shrinkage (comparable to normal weight concrete), durability (including both reduced permeability and cracking tendency), ductility, and thermal properties (possibly beneficial for mass concrete). Several bridges that used lightweight concrete are highlighted, showing that the material provides an economical and durable solution for bridges. |
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| Keywords: |
bridges ductility durability tensile strength compressive strength lightweight concrete modulus of elasticity creep shrinkage material properties
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