Freeze-Thaw Resistance of Normal and High Strength Concretes Produced with Fly Ash and Silica Fume

Karakurt, Cenk; Bayazıt, Yıldırım

doi:10.1155/2015/830984

Cited by 46 publications

(23 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The opposite results were obtained by testing ASR in specimens made using EGA of a diameter of (0-5) mm made by Penostek [24]. The RILEM TC 106-AAR method demonstrated that concrete with a density of about 500 kg/m 3 did not meet the requirements for its relative expansion even using Aalborg white CEMI 52.5 R with Naeq - Meanwhile, fly ash showed better performance for concrete mixtures at a 0.40 W/C ratio [27].…”

Section: Introductionmentioning

confidence: 87%

Compressive Strength and Durability Properties of Structural Lightweight Concrete with Fine Expanded Glass and/or Clay Aggregates

Rumsys¹,

Spudulis²,

Bačinskas³

et al. 2018

Preprint

View full text Add to dashboard Cite

This study is focused on the experimental investigation of compressive strength and durability properties of lightweight concrete mixtures with fine expanded glass and expanded clay aggregates using different microfillers. The paper proposes the relationships between the compressive strength and density of concrete mixtures with different proportions of lightweight aggregates mentioned above. The performed experimental studies have revealed the tendencies of possible usage of different amount of fine lightweight aggregates and their combinations in the production of concrete mixtures depending on the demands of practical application. Following the requirements for structural concrete subjected to environmental effects, durability properties (alkaline corrosion and freeze–thaw resistance) of the selected concrete mixtures with expanded glass aggregate were studied. The results of the experimental investigations have shown that durability of tested concrete specimens was sufficient. The study has concluded that the mixtures under consideration can be applied for the production of structural elements to which durability requirements are significant.

show abstract

Section: Introductionmentioning

confidence: 87%

Compressive Strength and Durability Properties of Structural Lightweight Concrete with Fine Expanded Glass and/or Clay Aggregates

Rumsys¹,

Spudulis²,

Bačinskas³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

“…However, due to the silica fume, the coarser pore size is decreased, and so more and smaller pores retain the same pore volume [90]. The frost durability of the silica fume composite concrete can be enhanced either by lowering the w/b ratio or by reducing the volume of the capillary pores, consequently leading to less scaling [23,[91][92][93][94]. The presence of the amorphous silica fume altered the frost damage mechanism and acted as a strength accelerator due to the formation of a denser microstructure having a lower water penetration during freezing.…”

Section: Composite Portland Cement-based Concretesmentioning

confidence: 99%

“…Based on previous studies, using over 15% silica fume corresponds to a high-water requirement. Therefore, 15 wt% silica fume is considered as the optimal amount for cement replacement, reaching a strength of 65 MPa with no air-entraining agent and 45 MPa with a 0.15% air-entraining agent for standard curing [ 91 ]. The reduction in strength is due to the carbon originating from the silica fume.…”

Section: Composite Portland Cement-based Concretesmentioning

confidence: 99%

A Review of the Mechanical Properties and Durability of Ecological Concretes in a Cold Climate in Comparison to Standard Ordinary Portland Cement-Based Concrete

et al. 2020

View full text Add to dashboard Cite

Most of the currently used concretes are based on ordinary Portland cement (OPC) which results in a high carbon dioxide footprint and thus has a negative environmental impact. Replacing OPCs, partially or fully by ecological binders, i.e., supplementary cementitious materials (SCMs) or alternative binders, aims to decrease the carbon dioxide footprint. Both solutions introduced a number of technological problems, including their performance, when exposed to low, subfreezing temperatures during casting operations and the hardening stage. This review indicates that the present knowledge enables the production of OPC-based concretes at temperatures as low as −10 °C, without the need of any additional measures such as, e.g., heating. Conversely, composite cements containing SCMs or alkali-activated binders (AACs) showed mixed performances, ranging from inferior to superior in comparison with OPC. Most concretes based on composite cements require pre/post heat curing or only a short exposure to sub-zero temperatures. At the same time, certain alkali-activated systems performed very well even at −20 °C without the need for additional curing. Chemical admixtures developed for OPC do not always perform well in other binder systems. This review showed that there is only a limited knowledge on how chemical admixtures work in ecological concretes at low temperatures and how to accelerate the hydration rate of composite cements containing high amounts of SCMs or AACs, when these are cured at subfreezing temperatures.

show abstract

“…The concrete yam construction displays better-quality constancy, elasticity and fire persistance. A main symbol of this sort of construction is the bond association presented between steel and concrete, which directly rises the load dimensions of the construction (Karakurt and Bayazıt, 2015). The matter of steel erosion in concrete constructions in the penetrating situation has been an fascinating feature in conditions of corrosion and civil engineering resources which it recovers with steel yam.…”

Section: Reinforced Concrete To Steel Yammentioning

confidence: 99%

Concretes Resistance of Yam a Great Persistence

Gholami¹,

Haeri-Hamedani²,

Ghane³

et al. 2019

American Journal of Engineering and Applied Sciences

View full text Add to dashboard Cite

Today all distinguish the position of earthquake withstanding of constructions in seismic-vulnerable zones. With respect to this opinion that current concrete constructions are usually considered and constructed depend on earliest rules lacking examining the result of seismic powers and the novel rules don't guess any shake, so, these structures must be persistence capability. Investigation on standards of HPFRCC substantial as one of the most appropriate limited persistence approaches of concrete constructions member has a distinct ineffectiveness. we can apply dissimilar approaches to maintenance destroyed concrete structures by the seismic or to complete shake persistance of current concrete structures. There are two procedures of applying steel sheets and FRP sheets for concrete memberships reinforcement or renovation. Each of these two approaches is comprehension of these resources with concrete and absence of organization in their way and features. First scholars have exposed that the recent HPFRCC substantial that mostly is a concrete with a high persistance with steel, glass, aramid and carbon yam has a appropriate interactive organization with concrete and can rise concrete persistance frame the opinion of assessment of bending and portional as these two other constituents. In this paper, we attempt to compare concretes which one consist of above yam frame the point of opinion of pressure and tonsorial persistance to make concrete sheets with high persistance entirely, that at last easy's receptacle of steel sheets had improved consequences of pressure and tonsorial persistance to generate these sheets into other models.

show abstract

Freeze-Thaw Resistance of Normal and High Strength Concretes Produced with Fly Ash and Silica Fume

Cited by 46 publications

References 11 publications

Compressive Strength and Durability Properties of Structural Lightweight Concrete with Fine Expanded Glass and/or Clay Aggregates

Compressive Strength and Durability Properties of Structural Lightweight Concrete with Fine Expanded Glass and/or Clay Aggregates

A Review of the Mechanical Properties and Durability of Ecological Concretes in a Cold Climate in Comparison to Standard Ordinary Portland Cement-Based Concrete

Concretes Resistance of Yam a Great Persistence

Contact Info

Product

Resources

About