Abrasive wear evolution in concrete pavements

García, Álvaro; Castro‐Fresno, Daniel; Polanco, J.A.; Thomas, Carlos

doi:10.1080/14680629.2012.694094

Cited by 24 publications

(10 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The incorporation of RA leads to an increase of porosity in relation to the w/c and the degree of substitution. Similarly, the best quality of the paste, less porously, also improve the wear behaviour of precast elements made with this material [65].…”

Section: Open Porositymentioning

confidence: 88%

Structural recycled aggregate concrete made with precast wastes

Thomas

Setién

Polanco

2016

Construction and Building Materials

Self Cite

106

View full text Add to dashboard Cite

This paper presents the main results of the characterization of recycled aggregate concrete made with precast structural concrete wastes as a case study. The use of recycled aggregates presents two main benefits. On the one hand, there would be an economic and environmental saving because it would not need to deposit waste in landfills. On the other hand, there would be a further economic and environmental saving because it would reduce the need for natural aggregate. However, because of the need of a greater amount of cement not all degrees of substitution present advantages. The results were obtained from four degrees of substitution and different mixing proportions and methods using natural and recycled aggregates and superplasticizers. After obtaining the optimal mixing proportions, the concretes have been fully characterised performing mechanical and durability tests, the methods analysed and the results compared with the literature.

show abstract

Section: Open Porositymentioning

confidence: 88%

Structural recycled aggregate concrete made with precast wastes

Thomas

Setién

Polanco

2016

Construction and Building Materials

Self Cite

106

View full text Add to dashboard Cite

show abstract

“…Традиционными способами изучения динамического механического поведения водонасыщенных материалов в условиях сжатия являются лабораторные эксперименты [16][17][18][19] и мониторинг крупномасштабных объектов, функционирующих в водонасыщенном состоянии [15,[20][21][22]. Перспективной альтернативой является компьютерное моделирование динамического нагружения представительных образцов бетонов с использованием связанных механических моделей, учитывающих деформацию каркаса, перераспределение (фильтрацию) порового флюида и взаимовлияние этих процессов.…”

Section: Introductionunclassified

The Numerical study of the influence of a two-scale pore structure on the dynamic strength of water-saturated concrete

Konovalenko

Сергеевич²,

Shilko

et al. 2020

PNRPU Mechanics Bulletin

View full text Add to dashboard Cite

Many infrastructural concrete facilities, such as dams, bridge footings, foundations of port facilities and offshore drilling platforms, operate in a permanent contact with water. The permeable fractured-porous structure of concrete determines the water-saturated state of the surface layers of such concrete elements. Under dynamic contact loading, the pore fluid is capable of exerting a significant mechanical influence on the local stress-strain state and strength characteristics of the surface layers of concrete. This has to be taken into account when assessing the wear intensity of surface layers and predicting a concrete element’s service life. The aforesaid determines the relevance of the study aimed at identifying the influence of the pore fluid and characteristics of the concrete pore structure on the strength and fracture pattern under quasistatic and dynamic compressive loading. The present work is devoted to the theoretical study and generalization of the laws of mechanical influence of the pore fluid on the dynamic strength of high-strength concrete with a two-scale pore structure. The emphasis in the study is on analyzing the contributions of each of the pore subsystems to the integral mechanical effect of the fluid. To carry out such an analysis, a coupled hydromechanical model is developed. It takes into account the compositional structure of concrete, the presence of a pore space in a cement stone of two different scales, the interaction of a pore liquid and a solid-phase skeleton based on the Bio poroelasticity model, as well as fluid filtration in a pore space. By using the developed model were performed the numerical studies of the dependence between the compressive strength of the representative concrete volumes of the mesoscopic scale on the strain rate, the sample size, the pore fluid viscosity, and pore structure parameters. The simulation results showed the possibility of combining the obtained dependencies into a generalized (master) curve in terms of a combined dimensionless parameter, which has the meaning similar to the Darcy number. We identified two key factors that control the type and parameters of the concrete master curve of the dynamic strength. The first factor is the mobility of the pore fluid in the network of the capillary pores. It determines the rate of stress equalization in the porous skeleton due to fluid flow. The second factor is the interconnection of large micropores with the network of the small capillary pore channels. It determines the magnitude of the decrease in stress concentration in micropores by filtering the excess pore fluid into the capillary pore network. It is shown that the contributions of these two factors to the amplitude of variation of the dynamic strength of the water-saturated concrete are additive, and their total contribution reaches 25 %.

show abstract

“…), polypropylene fibers, and metallic fibers [101][102][103][104][105] have been found to especially increase the abrasion resistance of the surface of concrete and mortar. The method of finishing and modifying the overlay material with micro/nano materials not only affects the abrasion resistance [106][107][108][109][110][111][112][113][114], but also different special properties such as aging resistance in high temperatures, self-cleaning, air purification, de-icing salt resistance or freeze/thaw resistance [115][116][117][118][119]. Impregnation of the surface of the overlay by different coatings (e.g., epoxy, acrylic, polyurethane, cementitious, polymer/clay nanocomposites) can increase its durability, as well as improve many functional parameters such as adhesive resistant, chemical resistance, chloride permeability, hardness, impermeability, abrasion resistance, heat resistance, shrinkage, etc.…”

Section: Overview Of Recent Activities Used To Improve the Functionalmentioning

confidence: 99%

Evaluation of the Adhesion between Overlays and Substrates in Concrete Floors: Literature Survey, Recent Non-Destructive and Semi-Destructive Testing Methods, and Research Gaps

Szymanowski

2019

Buildings

View full text Add to dashboard Cite

Non-destructive testing (NDT) and semi-destructive testing (SDT) have recently been more frequently used for the evaluation and condition assessment of concrete floors in various types of buildings. The subject of the article is to briefly introduce the reader to the problem of adhesion between overlays and substrates in concrete floors and to illustrate the current state of knowledge on the subject. The aim of this paper was to briefly describe the recently used non-destructive and semi-destructive testing methods and the parameters useful for characterizing the adhesion between overlays and substrates in concrete floors, as well as the methods useful to characterize the functional properties of the overlays. A recent literature survey, related to the adhesion between the overlays and substrates in concrete floors, is thus shown. Special emphasis was placed on the critical review of the current research results. Based on the analysis of the literature review, research gaps have been presented in order to highlight future research directions.

show abstract

Abrasive wear evolution in concrete pavements

Cited by 24 publications

References 11 publications

Structural recycled aggregate concrete made with precast wastes

Structural recycled aggregate concrete made with precast wastes

The Numerical study of the influence of a two-scale pore structure on the dynamic strength of water-saturated concrete

Evaluation of the Adhesion between Overlays and Substrates in Concrete Floors: Literature Survey, Recent Non-Destructive and Semi-Destructive Testing Methods, and Research Gaps

Contact Info

Product

Resources

About