Influence of limestone dust and natural pozzolan on engineering properties of self-compacting repair mortars

Ghrici, Mohamed; Choucha, Said; Omran, Ahmed

doi:10.3221/igf-esis.45.11

Cited by 4 publications

(2 citation statements)

References 30 publications

(35 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, it can be attributed to the slowness of the pozzolanic reaction of the limestone powder compared to that of the silica fume. This result is agreed with previous studies [27,28].…”

Section: Mechanical Propertiessupporting

confidence: 94%

Mechanical Performance of Steam-Cured Self-Compacting Concrete Incorporating Silica Fume and Limestone Powder

Ghernouti

Rabehi

Mansour

2021

JERA

View full text Add to dashboard Cite

In this paper, influence of heat treatment on evolution of mechanical strengths at early age, less than 24hours of self-compacting concretes containing limestone powder and silica fume as fine materials was investigated experimentally. Two compositions of self-compacting concrete have been studied; the first is elaborated with silica fume addition and the second with limestone powder, each mixture were prepared with a constant water/binder ratio of 0.39. Concrete samples were either cured in water at (23±1°C), or steam cured at 65°C maximum temperature over six hours (6h) curing period. Tests of mechanical strengths were performed on specimens cooled down slowly to room temperature after heating.The obtained results show that all self-compacting mixtures exhibited satisfying fresh properties and check EFNARC specifications of self-compacting concrete (slump flow diameter higher than 650mm, L-box ratio higher than 80% and sieve stability less than 17%).Mechanical strengths of concrete containing limestone addition are slightly lower than those of concrete based on silica fume at all ages. Moreover, heat treatment generates an improvement of compressive and flexural strength. Interesting compressive strengths are obtained. At 24 hours, after heat treatment, the strengths are already greater than 35 MPa. The values are 37 MPa and 40 MPa for self-compacting concrete containing limestone powder and silica fume respectively compared to 40 MPa and 46 MPa obtained at 7 days for the corresponding non-heat treated concretes. Compressive strength gain of SCCs mixtures with limestone powder and with silica fume, undergoing heat treatment at the age of 24hours is 85% and 75% respectively compared to SCCs mixtures cured in water.

show abstract

“…Also, it can be attributed to the slowness of the pozzolanic reaction of the limestone powder compared to that of the silica fume. This result is agreed with previous studies [27,28].…”

Section: Mechanical Propertiessupporting

confidence: 94%

Mechanical Performance of Steam-Cured Self-Compacting Concrete Incorporating Silica Fume and Limestone Powder

Ghernouti

Rabehi

Mansour

2021

JERA

View full text Add to dashboard Cite

show abstract

“…The quality of water can also affect the mechanical properties of concrete and cementitious materials [28][29][30][31][32]. According to NFP 18-303, in this study tap (drinking) water was used for preparing the specimens and distilled water was used for the characterization and durability tests [31][32][33][34][35].…”

Section: Mixing Watermentioning

confidence: 99%

Experimental contribution to the study of the physic-mechanical behavior and durability of high-performance concretes based on ternary binder (cement, silica fume and granulated blast furnace slag)

Rahim

Achoura

Benzerara

et al. 2021

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

Le béton à hautes performances (BHP) est un béton innovant largement utilisé dans la construction moderne. De nouvelles techniques de formulation et de conception du HPC ont permis d'obtenir des performances mécaniques et une durabilité remarquables par rapport au béton conventionnel. Les principaux avantages du HPC sont liés à sa faible porosité, sa très haute résistance mécanique et son excellente durabilité. La facilité d'application du HPC est obtenue par l'utilisation combinée de superplastifiant et d'ajout de minéraux, ce qui se traduit par une augmentation significative de la résistance à la compression tout en améliorant la maniabilité et la durabilité. L'utilisation d'un liant ternaire (ciment, fumée de silice et laitier granulé de haut fourneau broyé) dans la fabrication du HPC est une nouvelle avancée dans la construction durable qui offre des avantages économiques, techniques et écologiques. L'objectif de ce travail de recherche était d'améliorer les propriétés physico-mécaniques du HPC à base de liant ternaire en étudiant l'influence du remplacement du ciment par du laitier granulé et des fumées de silice. Les résultats des tests mécaniques montrent que les performances du HPC réalisé avec ces liants ternaires sont similaires au HPC témoin sans laitier granulé. Enfin, il est conclu que l'utilisation de tels liants est très bénéfique pour diminuer les problèmes environnementaux et améliorer la durabilité du HPC.

show abstract

Comprehensive study on the role of mycrisparite in enhancing strength, stability, and microstructural traits of self-compacting mortars

Etli,

Yılmaz

2024

European Journal of Environmental and Civil Engineering

View full text Add to dashboard Cite

Influence of limestone dust and natural pozzolan on engineering properties of self-compacting repair mortars

Cited by 4 publications

References 30 publications

Mechanical Performance of Steam-Cured Self-Compacting Concrete Incorporating Silica Fume and Limestone Powder

Mechanical Performance of Steam-Cured Self-Compacting Concrete Incorporating Silica Fume and Limestone Powder

Experimental contribution to the study of the physic-mechanical behavior and durability of high-performance concretes based on ternary binder (cement, silica fume and granulated blast furnace slag)

Comprehensive study on the role of mycrisparite in enhancing strength, stability, and microstructural traits of self-compacting mortars

Contact Info

Product

Resources

About