Stress-strain relationships and modulus of elasticity of rocks and of ordinary and high performance concretes

Piasta, Wojciech; Góra, Jacek; Budzyński, W.

doi:10.1016/j.conbuildmat.2017.07.167

Cited by 45 publications

(17 citation statements)

References 15 publications

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“…The concrete was prepared using CEM I 42.5 R Portland cement. The chemical composition of cement was presented in Table 1 , whereas the physical properties were shown in Table 2 [ 38 ]. The optimal value of water/binder ratio and the content of self-compacting concrete were determined experimentally, by preparing multiple test batches.…”

Section: Methodsmentioning

confidence: 99%

The Microstructure-Mechanical Properties of Hybrid Fibres-Reinforced Self-Compacting Lightweight Concrete with Perlite Aggregate

et al. 2018

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The purpose of this paper is to determine the influence of the lightweight porous perlite aggregate and two widely used types of fibres on the physical and mechanical properties, frost durability and microstructure of self-compacting lightweight concrete (SCLC). The experimental investigation consisted of tests carried out on cubes and prismatic samples made of SCLC and fibres-reinforced SCLC with variable content ranging from 0.5 to 1% of basalt fibres (BF) and/or 0.5% of steel fibres (SF). In this study, two variable contents of fine perlite aggregate were used: 5% and 15%. The workability (the slump-flow and t500 values) in fresh state SCLCs have been done. Extensive data on compressive and flexural tensile strength in bending behaviour, frost resistance and the microstructure including interfacial transition zone (ITZ) were recorded and analysed. The hybrid fibres-reinforced SCLC with perlite aggregate showed a more ductile behaviour compared to that of SCLC without fibres. Fibres bridge cracks during flexural tensile strength test. BF successfully protected porous SCLC against frost attack, whereas SF succumbed to damage.

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Section: Methodsmentioning

confidence: 99%

The Microstructure-Mechanical Properties of Hybrid Fibres-Reinforced Self-Compacting Lightweight Concrete with Perlite Aggregate

et al. 2018

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“…Meanwhile, for w/b = 0.30 and 0.35, the increases were 27.9% and 36%, respectively. Piasta et al [42] found that the elastic modulus of the high-performance concrete with w/b = 0.28 was 47.1 GPa, whereas the elastic modulus of the concrete with 1% nanosilica showed an increase of 13%, attributed to the effects of nanosilica modification on the microstructure [19]. Because the trend of the results of both fc and Ec were consistent, that is, as the silica fume and nanosilica content were incorporated into the concretes, an improvement in the properties occurred.…”

Section: Compressive Strength (Fc) and Elastic Modulus (Ec)mentioning

confidence: 99%

Analysis of mechanical and microstructural properties of high performance concretes containing nanosilica and silica fume

Schiavon¹,

Borges²,

Silva³

et al. 2021

Matéria (Rio J.)

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The use of nanomaterials in concrete has shown promise, and the use of several types in cementitious compounds has been found to guarantee greater physical-mechanical properties and improvements in microstructure. The use of mineral admixtures, such as silica fume, ensures the improvement of the interfacial transition zone (ITZ) between aggregate and paste in high-performance concrete (HPC). Thus, this work evaluates the performance of superplasticizer additive with colloidal nanosilica suspension and slurried silica fume with HPC and its macro-and micro-structural properties. The mechanical (i.e., compressive strength and elastic modulus) and microstructural properties via (scanning electron microscopy and X-ray micro tomography) of concretes with 1.5 and 3% nanosilica and 5 and 10% silica fume included in the evaluation methods in this study. The results indicate that, with the use of mineral admixtures, the compressive strength and elastic modulus of concrete increased significantly. The concrete with the use of 10% silica fume and 3% nanosilica resulted in a showed an increased strength over 75% at 28 days. Besides that, for same w/b = 0.35 the elastic modulus increased by 36% compared with the reference concrete. The microstructural investigations show that the nanosilica and silica fume led to a densification of microstructure, which is responsible for the improvement of HPC performance.

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“…Simple increase in secondary liner thickness cannot completely control the creep deformation in rock mass. FC-based members embedded between primary support and secondary liner can notably bear deformation pressure, thereby the high compressibility and [36,107,131,167,[194][195][196][197][198][199][200][201][202][203][204][205]. [232] was adopted in liner system of Tiefengshan No.…”

Section: Structure Membermentioning

confidence: 99%

Foam Concrete: A State‐of‐the‐Art and State‐of‐the‐Practice Review

Wang

et al. 2020

Advances in Materials Science and Engineering

100

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Foam concrete (FC) has the potential of being an alternative to ordinary concrete, as it reduces dead loads on the structure and foundation, contributes to energy conservation, and lowers the cost of production and labor cost during the construction and transportation. The paper reports a state-of-the-art review of foam concrete in terms of its components, manufacturing and material properties like drying shrinkage, compressive strength, stability and pore structure, etc. In view of the significance of the FC in engineering construction, it also includes a state-of-the-practice review of foam concrete in tunnel and underground engineering. Some shortcomings and technical limitations as well as emerging direction for performance enhancement of FC are also discussed. Current review concludes that the long-term performance and enhancement-associated properties need to be deeply investigated. This study can help alleviate consumer concerns and further encourage the wider application of FC in civil engineering.

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Stress-strain relationships and modulus of elasticity of rocks and of ordinary and high performance concretes

Cited by 45 publications

References 15 publications

The Microstructure-Mechanical Properties of Hybrid Fibres-Reinforced Self-Compacting Lightweight Concrete with Perlite Aggregate

The Microstructure-Mechanical Properties of Hybrid Fibres-Reinforced Self-Compacting Lightweight Concrete with Perlite Aggregate

Analysis of mechanical and microstructural properties of high performance concretes containing nanosilica and silica fume

Foam Concrete: A State‐of‐the‐Art and State‐of‐the‐Practice Review

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