Blast Resistant Design

Full Session with Abstracts

338132-11 - Additive construction with concrete: Response of wall and beam sections to blast loads

Saturday, April 21
10:00 AM - 11:30 AM
Location: 202CD

Additive construction, colloquially known as 3-D printing, is an emerging field for the rapid construction of structures with wide-reaching interest to designers and construction professionals globally. Without the need for traditional formwork, additive construction techniques allow for designers to develop innovative solutions with minimal geometric constraints, while allowing construction professionals to minimize labor requirements and reduce construction times. Traditionally, additive construction has been performed using metallic or polymeric materials, but new advancements have shown the suitability of cementitious materials for use with these techniques. As cementitious materials are the most widely used construction materials in the world, these construction techniques are applicable to professionals both nationally and internationally.

Because additive construction is a developing construction practice, no current building codes control structural design of printed structures; therefore, many unknowns exist concerning how printed structures respond to different load cases. As such, the structural performance of many models was initially studied, and additive construction with concrete was found to be adequate for structural design. Here, an analysis of the dynamic response to blast loading of concrete wall sections produced using additive construction techniques is presented and compared to traditional construction techniques such as cast-in-place concrete and concrete masonry unit construction. Wall sections were subjected to simple one-way action, as well as applied vertical stresses to simulate roof loads. These laboratory experiments of simulated wall sections allow for a more complete understanding of when additive construction is an acceptable method of construction for structures potentially subjected to blast loads. In addition, the findings herein indicate areas where refinement of both materials and construction methods can improve upon the response to dynamic loads. Also included is a discussion of the dynamic response of printed concrete beam sections reinforced with steel bars and/or fiber mesh. Furthermore, descriptions of material development and construction methodology are given.

Jedadiah Burroughs


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338132-11 - Additive construction with concrete: Response of wall and beam sections to blast loads

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