Related Experiment Video
Updated: Oct 7, 2025
07:53
Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
Published on: April 27, 2019
8.4K
Length Effect at Testing Splitting Tensile Strength of Concrete
1Department of Structural Engineering, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40, 20-618 Lublin, Poland.
Materials (Basel, Switzerland)
|January 11, 2022
Summary
Concrete's tensile strength is crucial for structural integrity. This study found shorter cylindrical specimens in the Brazilian test showed a ~5% increase in tensile splitting strength, influenced by aggregate size.
Area of Science:
- Civil Engineering
- Materials Science
- Structural Analysis
Background:
- Tensile strength is fundamental for concrete cracking resistance and fracture analysis.
- The Brazilian method is the standard for testing concrete's tensile strength.
- Specimen geometry significantly impacts tensile splitting strength results.
Purpose of the Study:
- To investigate the influence of cylinder length on concrete's tensile strength using the Brazilian method.
- To analyze how specimen dimensions affect tensile splitting strength measurements.
Main Methods:
- Testing cylindrical concrete specimens of two sizes: 150 mm × 150 mm and 150 mm × 300 mm.
- Conducting experiments with two maximum aggregate sizes: 16 mm and 22 mm.
- Utilizing "Statistica" software for comprehensive statistical analysis.
Main Results:
- Shorter cylinders (150 mm × 150 mm) exhibited approximately 5% higher tensile splitting strength compared to longer ones (150 mm × 300 mm).
- The observed length effect was independent of cement matrix strength and aggregate type.
- Aggregate size was identified as a key factor influencing the length effect on tensile strength.
Conclusions:
- Cylinder length significantly influences concrete tensile splitting strength in the Brazilian test.
- Aggregate size plays a critical role in the scale effect observed.
- Further multi-parameter statistical analysis is recommended to fully understand the scale effect on splitting tensile strength.
Related Concept Videos
01:30Relation Between Tensile Strength and Compressive Strength of Concrete
379
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...
379
01:16Tensile Strength Considerations of Concrete
224
Considering the tensile strength of concrete involves recognizing that the theoretical strength of cement paste can be up to a thousand times higher than what is observed in practical applications. This significant discrepancy is largely attributed to the presence of microscopic cracks within the concrete. These cracks tend to amplify stress at their tips when a load is applied, a phenomenon explained by Griffith's theory of brittle fracture.
The dimensions and shape of a concrete specimen...
The dimensions and shape of a concrete specimen...
224
01:22Fatigue Strength of Concrete
317
Fatigue, in the context of materials science and engineering, refers to the weakening or failure of a material caused by repeatedly applied loads, even if these loads are below the strength limit of the material. Fatigue strength in concrete is a critical property that influences its durability and longevity. Concrete can fail in two ways due to fatigue. Static fatigue or creep rupture occurs under a constant load or one that increases slowly. The other failure mode is due to cyclical or...
317
01:23Behavior of Concrete Under Compressive Load
315
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...
315
01:20Strength of Cement
237
Strength tests for cement are not performed directly on neat cement paste due to difficulty in obtaining consistent, reliable specimens. Instead, cement is typically tested in the form of cement-sand mortar.
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
237
01:21Impact Strength of Concrete
366
Impact strength in concrete is a critical measure that reflects the material's capability to endure the forces applied during pile driving and when supporting machinery foundations that experience impulsive loads. It is also essential when handling precast concrete components to prevent accidental damage. The impact strength is assessed by observing the concrete's resistance to repeated impacts and energy absorption capacity. A key indicator of significant damage to concrete is when it...
366