Influence of contact friction in compression tests of concrete samples

Bandeira, Matthews Vargas Vaucher; Torre, Kevin Rebolledo La; Kosteski, Luís Eduardo; Marangon, Ederli; Riera, Jorge Daniel

doi:10.1016/j.conbuildmat.2021.125811

Cited by 13 publications

(11 citation statements)

References 32 publications

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“…Figure 6 shows the relationship between the axial compressive strength and cubic compressive strength of concrete, ultra-high performance concrete in other papers [12][13][14][15][16][17][18][19][20][21], and also HSGM from Table 1 in this paper. The axial compressive strength of structural grouting increases with the increase in cubic strength, showing a linear growth trend similar to that of concrete.…”

Section: Formula For the Relationship Between Axial Compressive Stren...mentioning

confidence: 82%

Study on Key Mechanical Parameters of High-Strength Grouting Material

et al. 2023

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In order to better design and calculate in infrastructures, it is necessary to clarify the key mechanical parameters of structural materials, such as axial compressive strength, elastic modulus and Poisson’s ratio. High-strength grouting material (HSGM) have begun to be used as structural materials with the development of large and complex structures. A large number of test dates were used to analyze the relationship between the axial compressive strength and the cubic compressive strength of HSGM in the paper. ABAQUS software was used to model the specimens of axial compressive strength, and the strain cloud maps of concrete and HSGM were compared and analyzed. By considering HSGM as two-phase (sand and paste) composites, the relationship between elastic modulus of HSGM and mechanical parameters of component materials was derived, and the test results of the mechanical properties of HSGM with different ratios of sand to cement were used for verification. The test results show that the axial compressive strength of the HSGM is closer to the cubic strength than that of the concrete material, which accords with the finite element analysis results. The elastic modulus of high-strength grouting material conforms to the theoretical derivation of two-phase material. The material composition is one of the main factors affecting the elastic modulus. Poisson’s ratio range of high-strength grouting material is 0.25 ± 0.01 by statistical analysis.

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Section: Formula For the Relationship Between Axial Compressive Stren...mentioning

confidence: 82%

Study on Key Mechanical Parameters of High-Strength Grouting Material

et al. 2023

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“…A “sand-glass” related to the friction between the rigid loading plates of universal test machines and the contacted surfaces of cubes has been previously reported [ 20 , 22 ]. For instance, Hao [ 34 ] conducted friction tests and obtained a real friction coefficient between concrete and steel of 0.235.…”

Section: Discussionmentioning

confidence: 99%

“…Previous researchers have found the sensitivity of the experimental results to the friction between an upper or lower rigid platen and the connected surfaces of cubes. Bandeira [ 22 ] investigated the influence of the boundary conditions and geometries of specimens through unconfined compression tests on concrete. Three anti-friction strategies were carried out on the loaded planes: grease, Teflon, and brush plates.…”

Section: Introductionmentioning

confidence: 99%

A 3D Meso-Scale Model and Numerical Uniaxial Compression Tests on Concrete with the Consideration of the Friction Effect

Wang,

Yu,

et al. 2024

Materials

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Achieving the real mechanical performance of construction materials is significantly important for the design and engineering of structures. However, previous researchers have shown that contact friction performs an important role in the results of uniaxial compression tests. Strong discreteness generally appears in concrete-like construction materials due to the random distribution of the components. A numerical meso-scale finite-element (FE) method provides the possibility of generating an ideal material with the same component percentages and distribution. Thus, a well-designed meso-FE model was employed to investigate the effect of friction on the mechanical behavior and failure characteristics of concrete under uniaxial compression loading. The results showed that the mechanical behavior and failure profiles of the simulation matched well with the experimental results. Based on this model, the effect of friction was determined by changing the contact friction coefficient from 0.0 to 0.7. It was found that frictional contact had a slight influence on the elastic compressive mechanical behavior of concrete. However, the nonlinear hardening behavior of the stress–strain curves showed a fairly strong relationship with the frictional contact. The final failure profiles of the experiments showed a “sand-glass” shape that might be expected to result from the contact friction. Thus, the numerical meso-scale FE model showed that contact friction had a significant influence on both the mechanical performance and the failure profiles of concrete.

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“…However, a major contributing factor is due to the incorporation of soft plywood plates ( Figure 4 b) between the steel plates and cylindrical samples. This addition significantly reduced friction, consequently leading to a reduction in strength with a similar impact observed when capping top and bottom surfaces with sliding materials like Teflon [ 63 ]. Based on the experimental data acquired for Poisson’s ratio, it appears that this aspect remains unaffected.…”

Section: Discussionmentioning

confidence: 99%

Study on the Mechanical Properties of Two General-Purpose Cement–Lime Mortars Prepared Based on Air Lime

Zagaroli,

Kubica,

Galman

et al. 2024

Materials

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It is believed that the use of mortars based on air lime in the construction and renovation of brick buildings has a number of advantages, especially those closely related to the durability and strength of the structure. However, there is still a noticeable difference in the mechanical properties of these materials. This research investigated the mechanical characteristics of a mixed cement–lime mortar with the two most popular proportions of an air lime, cement, and sand mix: 1:1:6 and 1:2:9 (by volume). Mechanical tests were performed on standard and non-standard samples to assess compressive strength, tensile strength, flexural strength, and fracture energy. The obtained results indicate the possibility of using these mixtures in modern masonry construction, as well as in the aspect of sustainable development. Additionally, lime mortar with a higher lime content can be used in non-load-bearing walls and in renovation and repair works.

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Influence of contact friction in compression tests of concrete samples

Cited by 13 publications

References 32 publications

Study on Key Mechanical Parameters of High-Strength Grouting Material

Study on Key Mechanical Parameters of High-Strength Grouting Material

A 3D Meso-Scale Model and Numerical Uniaxial Compression Tests on Concrete with the Consideration of the Friction Effect

Study on the Mechanical Properties of Two General-Purpose Cement–Lime Mortars Prepared Based on Air Lime

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