Related Experiment Video
Updated: Mar 10, 2026
05:45
Assessing Disaster Resilience of Concrete with Titanium Dioxide Nanoparticles
Published on: November 14, 2025
415
High-performance concrete engineered for protective barriers
1National Building Research Institute (NBRI), Faculty of Civil and Environmental Engineering, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel avidan@technion.ac.il.
Summary
High-performance concrete with specific aggregate sizes and steel fibers enhances resistance to projectile impacts. Layered barriers engineered with these materials show improved performance and damage mitigation.
Area of Science:
- Materials Science
- Civil Engineering
- Mechanical Engineering
Background:
- High-performance concrete (HPC) is crucial for protective structures.
- Understanding material behavior under high strain rates is essential for barrier design.
- Existing research lacks a comprehensive review of HPC mix ingredients' impact on projectile resistance.
Purpose of the Study:
- To review the effects of HPC mix ingredients on projectile impact resistance.
- To evaluate the performance of layered barriers engineered with HPC.
- To propose a 'resistance index' for quantifying impact resistance.
Main Methods:
- Review of experimental data on aggregate types/sizes and steel fiber application in HPC.
- Analysis of impact energy at ballistic limit, damaged areas (front/rear faces), and overall damage.
- Evaluation of double-layered specimens under impact.
- Re-evaluation of experimental results using a proposed 'resistance index'.
Main Results:
- Aggregate size and steel fibers significantly influence impact resistance parameters.
- Layered barriers demonstrate improved performance, with fibers mitigating damage.
- Large aggregates in the front layer increase front-face damage but enhance overall resistance.
- The proposed 'resistance index' provides a comprehensive measure of barrier performance.
Conclusions:
- HPC mix design, particularly aggregate selection and steel fiber inclusion, is critical for impact resistance.
- Layered barrier design can effectively leverage material properties for enhanced protection.
- The 'resistance index' offers a valuable tool for quantifying and comparing impact resistance.
More Related Videos
Related Concept Videos
01:22Fiber Reinforced Concrete
475
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
475
01:25Reinforcements in Concrete
538
Reinforced concrete is a composite material used extensively in construction, combining the compressive strength of concrete with the tensile strength of steel. This synergy is essential as concrete, while excellent at resisting compression, is weak under tension. Steel bars, or rebars, are embedded in the concrete to handle these tensile forces. The choice of steel is strategic; it shares a similar coefficient of thermal expansion with concrete, which ensures uniformity in response to...
538
01:23Abrasion Resistance of Concrete
653
Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
One such test is the revolving disc test, where three plates...
653
01:27Corrosion of Reinforcement
645
The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
645
01:22Waterproofing and Anti-Bacterial Admixtures in Concrete
273
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
Waterproofing admixtures render concrete hydrophobic,...
273
01:29Frost Resistant Concrete
460
Concrete's susceptibility to frost damage during freeze-thaw cycles demands strategic measures to enhance its frost resistance. Employing techniques like air entrainment, adjusting the water-cement ratio, proper curing, and selecting appropriate aggregates are essential.
Introducing microscopic air bubbles into the concrete mix through air entrainment creates small voids that accommodate ice expansion, thereby reducing internal pressures and preventing cracking. The optimal amount of...
Introducing microscopic air bubbles into the concrete mix through air entrainment creates small voids that accommodate ice expansion, thereby reducing internal pressures and preventing cracking. The optimal amount of...
460