Related Experiment Video
Updated: Jun 22, 2025
11:07
Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
Published on: June 27, 2018
11.1K
Compressive Properties of Basalt Fibers and Polypropylene Fiber-Reinforced Lightweight Concrete
Shengda Xu1, Kaiyue Yan1, Tao Jiang1
1Merchant Marine College, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
ACS Omega
|July 1, 2024
Summary
High-strength lightweight concrete using basalt fibers significantly enhances structural integrity. Adding 12 mm basalt fibers (BF) increased compressive strength by over 60%, outperforming polypropylene fibers (PPF) and improving ductility.
Area of Science:
- Materials Science
- Civil Engineering
- Structural Engineering
Background:
- Traditional concrete's dead weight limits high-rise construction.
- High-strength lightweight concrete is crucial for modern structures.
- Lightweight concrete's brittleness affects strength and ductility.
Purpose of the Study:
- To develop a three-phase composite lightweight concrete.
- To investigate fiber type, content, and length effects on concrete properties.
- To analyze the compressive mechanism and optimize preparation parameters.
Main Methods:
- Preparation of three-phase composite lightweight concrete using tumbling and molding.
- Investigated influencing factors: GFR-EMS volume, fiber type, content, and length.
- Compression tests to analyze compressive mechanism and mechanical properties.
Main Results:
- Fiber addition significantly increases concrete compressive strength.
- 12 mm basalt fiber (BF) admixture (1.5%) yielded 9.08 MPa, a 62.43% increase.
- BF demonstrated superior performance over polypropylene fiber (PPF) in enhancing mechanical properties.
Conclusions:
- Fibers mitigate pore defects and form network structures, enhancing matrix-aggregate bonding.
- Basalt fibers are more effective than polypropylene fibers for improving lightweight concrete mechanical properties.
- Optimized preparation parameters provide insights for developing advanced lightweight concrete.
Related Concept Videos
01:22Fiber Reinforced Concrete
74
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...
74
01:25Reinforcements in Concrete
82
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...
82
01:23Abrasion Resistance of Concrete
125
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...
125
01:21Pozzolans
110
Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
Fly ash is...
Fly ash is...
110
01:23Behavior of Concrete Under Compressive Load
153
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
As the concrete specimen fractures under...
153
01:30Relation Between Tensile Strength and Compressive Strength of Concrete
192
Concrete is a fundamental building material, and understanding its strengths is crucial for construction projects. The relationship between its tensile and compressive strengths is intricate, showing that while these strengths are related, they do not increase at the same rate. Tensile strength's growth is slower and is affected by various factors such as the methods used for testing, the size and shape of the specimen, the texture of the aggregate used, and the moisture content of the...
192