Void Spaces
Void Spaces - Related Videos
01:12
Total Voids in Concrete
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2024
Total voids in concrete encompass gel water volume, capillary pores, and entrapped air. Gel water (retained within the cement hydration products) and physically entrapped or adsorbed water are significant for the hydration process. For complete hydration, it's estimated that the space needed for the products of a cubic centimeter of cement doubles. Capillary pores constitute the unoccupied space within the hydrated cement paste, with their size largely influenced by the water-to-cement ratio...
06:39
Real-Time Void Spot Assay
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Cited by 14 •
2023
This article describes a new method to study mouse voiding behavior by incorporating video monitoring in the conventional void spot assay. This approach provides temporal, spatial, and volumetric information on the voiding events and details of mouse behavior during the light and dark phases of the day.
01:22
Imaging Studies VI: Voiding Cystourethrography and Cystography
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2025
Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
07:54
In vitro Synthesis of Native, Fibrous Long Spacing and Segmental Long Spacing Collagen
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Cited by 16 •
2012
Simple and reproducible procedures are described for making three structurally distinct collagen assemblies from a common commercially available Type I collagen monomer. Native type, fibrous long spacing or segmental long spacing collagen can be constructed by varying the conditions to which the 300 nm long and 1.4 nm diameter monomer building block is exposed.
01:25
Space Trusses
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2025
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads. At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
FAQs
A void interrupts the continuity of the surrounding material, forcing stresses to redistribute around its boundary. This redistribution can create localized stress concentrations, where the structure experiences greater stress than the surrounding region. If designers do not account for the space, these altered load paths may reduce structural integrity, especially when the void is unintended or poorly controlled.
The contents of a void influence several local physical conditions. Trapped air or gas can change density and pressure, while a fluid may affect pressure distribution and movement. These spaces also modify heat transfer between adjacent regions. As a result, the same geometric void can produce different performance effects depending on what occupies it and how it is contained.
An intentional void is incorporated to achieve a planned function, such as lowering weight, providing insulation, accommodating services, or supporting buoyancy. An accidental void has not been included in the design assumptions, so its effects on density, heat transfer, fluid movement, or load paths may be uncontrolled. Distinguishing the two helps engineers evaluate whether a space contributes to performance or creates risk.
The outcome depends on the space's location, size, surrounding material, contents, and relationship to applied loads or moving fluids. A deliberately positioned space can support weight reduction or insulation, whereas a poorly located one may intensify stresses or disrupt flow. Engineering design therefore considers the space together with local pressure, heat-transfer conditions, structural continuity, and intended system function.
Engineers manage them through a combination of design, modeling, and inspection. Design establishes where spaces should occur and what function they serve. Modeling evaluates their effects on density, pressure, heat transfer, fluid movement, and load distribution. Inspection helps identify spaces that formed unintentionally or differ from expectations, supporting decisions that improve safety, performance, and durability.
Applications vary with the system's performance needs. In buildings and composite materials, spaces can help reduce weight or provide insulation. Pipelines require attention to spaces that may affect fluid movement and local conditions. Ships can use void-related design to support buoyancy. Across these examples, characterization and control help maintain the intended balance between function and structural integrity.