Foam-void precast concrete double-tee members

Jonnalagadda, Srimaruthi; Sreedhara, S; Soltani, Mahmoodreza; Ross, Brandon E.

doi:10.15554/pcij66.1-01

Cited by 5 publications

(3 citation statements)

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“…It is important to note that these recommendations are very generic for typical projects. For instance, parking buildings represent the typical precast garages built with Double Tee members (Jonnalagadda et al, 2021;Ram, 2021). Minor bridges include culvert box bridges and slab bridges .…”

Section: Choice Of Materials For Construction Projectsmentioning

confidence: 99%

Choosing Conventional Concrete, Ultra-High Performance Concrete or Steel as Material of Construction: An Opinion

Jonnalagadda,

Vemuri

2023

EMSJ

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Ultra-High Performance Concrete (UHPC) is an emerging concrete material that has potential to become a popular choice of material for construction of structures. UHPC is defined as concrete with characteristic compressive strength of anywhere from 120-150 MPa and above combined with superior properties such as high durability, corrosion resistance, low water permeability among many others. However its high tensile strength and cracking behavior is what makes it unique and interesting. UHPC is reported to have 10 to 15 MPa of tensile strength and excellent post-crack behavior as compared to Conventional Concrete (CC). UHPC is reported to indicate strain-hardening behavior when subjected to post-cracking loads. This unique combination of high compressive strength with tensile strength and resilient cracking behavior reminds us of structural steel which is the other major structural building material with similar behavior. In view of these behavioral similarities, an effort has been made in this paper to compare and contrast the properties of UHPC with structural steel. The stress-stain and load-deflection behaviors of both materials are compared. Also a comparison is made between the two materials when subjected to loading beyond post-crack or post-yield regions. To make this study complete, a comparison of material behavior of UHPC, CC and structural steel with regards to their engineering properties, cost, environmental footprint, construction ease and design life is made. All these three materials are rated based on several parameters such as performance, economy, reusability, sustainability, among others. Finally, the order of choice of these three construction materials for various types of structures for typical scenarios is recommended.

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Section: Choice Of Materials For Construction Projectsmentioning

confidence: 99%

Choosing Conventional Concrete, Ultra-High Performance Concrete or Steel as Material of Construction: An Opinion

Jonnalagadda,

Vemuri

2023

EMSJ

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“…As such it is required to not only adapt to new materials but also consider sustainability in the selection of materials so natural resources are not depleted rapidly. Any slightest improvements in design or material efficiency are to be welcomed in order to reduce the environmental footprint of construction industry (Jonnalagadda et al, 2021).…”

Section: Materials Adaptationsmentioning

confidence: 99%

The Adverse Impacts of Climate Change on Infrastructure and Proposed Adaptation Framework for Residential Structures: Part 1

Jonnalagadda,

Jonnalagadda

2023

EMSJ

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With global change in climate patterns, the uncertainty of natural hazards has also gone up significantly in the last few years. Cold countries have been experiencing seasons of extreme heat and drought whereas dry and arid areas have reported seasons of cold weather or torrential rains. In the past, monsoons in the Indian subcontinent have been very reliable in terms of timing and intensity; however in recent times, both their timing and intensity have been uncertain. Elsewhere in the world, tragic incidents have been reported due to freezing, heat waves or flooding most of which have been attributed to climate change caused by human living and industrialization on our planet. In this paper, the authors introduce to the perils of climate changes caused by rampant urbanization, industrialization, and the associated development. The authors present the importance of adapting every phase of infrastructure development such as materials, engineering, design, construction, and maintenance of our residential structures in order to minimize the impacts of human infrastructure development on climate. The various adaptations required to bring these changes are proposed and methods to make these adaptations practical are put forward. This first part of the overall study focuses on geometric, material and design adaptations. A plausible framework for creating sustainable urban residential infrastructure is proposed. Finally, conclusions are made, and a brief introduction is provided about the next part of this study and further adaptations that complement this framework.

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“…The highly streamlined current geometric design of these members does not leave much scope for further optimization with conventional concrete. Even though it was investigated to trim the weight of these double-tee members using Styrofoam voids in stems (Jonnalagadda et al, 2021), the benefits due to minor weight reduction may be offset by the increased construction costs. For such members, UHPC-based designs can provide a significant reduction in geometry and their self-weight (Gee at al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Ultra-High-Performance Concrete (UHPC): A state-of-the-art review of material behavior, structural applications and future

Jonnalagadda,

Chava

2023

Electron. J. Struct. Eng.

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Ultra-high-performance concrete commonly known as UHPC is rising curiosity among structural engineers all over. Though early research on this material dates back to a couple of decades, some initial knowledge about this material, its behavior, and its properties is largely limited to a few research circles in a handful of advanced countries. This paper introduces UHPC as a material, elaborates on its ingredients, and describes its properties. A detailed review of available research literature about UHPC is made. The contributions made by several researchers have been discussed in detail. Following this, the structural behavior and strength of the material are reviewed comprehensively. Comparisons are made between conventional concrete and UHPC with respect to their properties, stress-strain relation, cracking behavior, compressive, tensile, and shear strengths. A detailed evaluation is made of the enhanced properties of the material with respect to its durability and long-term performance. The resistance of this material to moisture permeability, chloride ingress, and chemical attacks is understood. The impact resistance and energy absorption characteristics of the material are compared with conventional concrete. The study documented the structural applications of UHPC as well as the potential applications in the field of civil engineering. Finally, the authors enlisted the impacts of this new material (UHPC) on the future direction of structural engineering and the innovative solutions it can provide to structural engineering problems

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Foam-void precast concrete double-tee members

Cited by 5 publications

References 0 publications

Choosing Conventional Concrete, Ultra-High Performance Concrete or Steel as Material of Construction: An Opinion

Choosing Conventional Concrete, Ultra-High Performance Concrete or Steel as Material of Construction: An Opinion

The Adverse Impacts of Climate Change on Infrastructure and Proposed Adaptation Framework for Residential Structures: Part 1

Ultra-High-Performance Concrete (UHPC): A state-of-the-art review of material behavior, structural applications and future

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