Related Experiment Video
Updated: Jun 3, 2025
07:42
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
309
Comparative Study of Granite and Expanded Clay Aggregate as Backfill Materials for Masonry Vaults
Piotr Krajewski1, Łukasz Hojdys1
1Faculty of Civil Engineering, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland.
Materials (Basel, Switzerland)
|January 8, 2025
Summary
This study on buried barrel vaults found that backfill material properties like internal friction angle and bulk density significantly impact load-bearing capacity. Vault extrados finishing also plays a crucial role.
Area of Science:
- Civil Engineering
- Geotechnical Engineering
- Structural Engineering
Background:
- Buried structures, such as barrel vaults, require careful design to ensure structural integrity under soil loads.
- The interaction between backfill material and the vault structure is critical for load-bearing capacity.
- Previous research has explored various aspects of buried structures, but the combined influence of backfill properties and vault surface finishing warrants further investigation.
Purpose of the Study:
- To experimentally and numerically investigate the load-bearing capacity of barrel vaults with different backfill materials.
- To analyze the impact of backfill material properties (bulk density, internal friction angle) and interface friction on vault performance.
- To evaluate the influence of extrados finishing methods on the overall structural behavior of buried vaults.
Main Methods:
- Experimental testing of barrel vaults with expanded clay and granite aggregate backfill.
- Numerical simulations using parametric analysis for various backfill materials and interface friction coefficients.
- Investigation of three extrados finishing types: masonry, PVC film, and steel angles.
Main Results:
- Both experimental and numerical results demonstrate a significant influence of the backfill's internal friction angle and bulk density on the load-bearing capacity.
- The friction coefficient at the backfill-vault interface was found to be a key factor affecting structural performance.
- The method used for extrados finishing of the vault substantially impacts its load-bearing capacity.
Conclusions:
- The load-bearing capacity of buried barrel vaults is highly sensitive to the characteristics of the backfill material.
- Optimizing backfill properties and selecting appropriate extrados finishing are essential for enhancing the structural performance of buried vaults.
- This research provides valuable insights for the design and construction of safer and more efficient buried vault structures.
More Related Videos
Related Concept Videos
01:29Stone Masonry
101
Stone masonry is a construction technique that uses individual stones to build structures and can be categorized into two main types: rubble and ashlar. Rubble masonry uses uneven, naturally shaped stones such as river rocks or fragments from quarries. This method often requires the mason to select and possibly shape each stone to fit the designated space, ensuring a proper build, even with irregular stone sizes and shapes. Ashlar masonry, on the other hand, employs uniformly cut stones that...
101
01:15Reinforced Brick Masonry
741
Reinforced brick masonry is an advanced construction technique that enhances the structural integrity of brick walls by incorporating steel reinforcements. These reinforcements are either placed within the hollow cores of bricks or sandwiched between two layers of masonry, known as wythes, and are then secured in place with grout. Grout is a fluid mixture composed of Portland cement, aggregate, and water, providing the necessary bonding agent for the steel and brick.
To fortify brick walls...
To fortify brick walls...
741
01:28Masonry
414
Masonry, known for its strength, durability, and aesthetic versatility, encompasses construction with solid stone or man-made units like bricks, clay tiles, terra cotta, and concrete blocks, combined to form structures like walls, floors, and arches. These units are placed in a systematic fashion, known as coursing, and are bound together using mortar—a mixture typically made of water, cement, and sand.
The process of building with masonry is hands-on and can be executed with basic tools....
The process of building with masonry is hands-on and can be executed with basic tools....
414
01:25Mortar Joints in Brick Masonry
100
Mortar joints play a critical role in brick masonry, filling the spaces between brick to bind them together and provide structural integrity and strength. The thickness of these joints is variable, typically ranging from less than one-fourth inch to over half an inch, based on structural needs and specific applications.
The process of joint tooling is implemented as the mortar begins to harden. This technique involves compacting and shaping the mortar to enhance both the appearance and the...
The process of joint tooling is implemented as the mortar begins to harden. This technique involves compacting and shaping the mortar to enhance both the appearance and the...
100
01:17Mortar Properties
111
Mortar properties encompass a range of characteristics crucial for construction and masonry work, including workability, water retention, bond strength, durability, compressive strength, volume change, and appearance. Workability refers to mortar's ability to be easily applied and manipulated without sagging or falling off surfaces, which is important for efficient masonry unit placement and alignment. Water retention is essential to prevent the mortar from losing moisture too quickly to...
111
01:13Mortar Joint Deterioration in Masonry
102
Mortar joint deterioration is a significant concern in masonry structures, with water accumulation in the joints leading to damage from freeze-thaw cycles. The repeated expansion of water during freezing and its melting during thawing develop and propagate cracks in the masonry joints. Eventually, this leads to the spalling of mortar from the joints, loosening masonry units and weakening the structure. The deteriorated mortar joints are also vulnerable to moisture intrusion into the walls.
The...
The...
102