Nondestructive Testing of Ultra-High Performance Concrete to Evaluate Freeze-Thaw Resistance

Vaitkevičius, Vitoldas; Šerelis, Evaldas; Rudžionis, Žymantas

doi:10.5755/j01.mech.18.2.1565

Cited by 11 publications

(5 citation statements)

References 12 publications

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“…Before the freeze-thaw test, the compressive strength of RPC soaked in 5 wt% NaCl solution for 48 h is lower than that of RPC soaked in water, which shows that the immersion of 5 wt% NaCl solution has a certain negative effect on the compressive strength of RPC. When the number of freeze-thaw cycles is the same, the compressive strength of RPC under chloride-salt freeze-thaw cycle is lower than that of RPC under fresh-water freeze-thaw cycle, which indicates that compared with the fresh-water freeze-thaw cycle, chloride-salt freeze-thaw cycle causes greater damage to RPC, similar conclusion is reported by Vaitkevičius et al [38]. It can be seen from Figure 9b that the compressive strength loss rate of RPC increases as the freeze-thaw cycles increase.…”

Section: Compressive Strength Losssupporting

confidence: 80%

Mechanical Properties and Freeze–Thaw Durability of Basalt Fiber Reactive Powder Concrete

Liu

Zhu

et al. 2020

Applied Sciences

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Basalt fiber has a great advantage on the mechanical properties and durability of reactive powder concrete (RPC) because of its superior mechanical properties and chemical corrosion resistance. In this paper, basalt fiber was adopted to modified RPC, and plain reactive powder concrete (PRPC), basalt fiber reactive powder concrete (BFRPC) and steel fiber reactive powder concrete (SFRPC) were prepared. The mechanical properties and freeze–thaw durability of BFRPC with different basalt fiber contents were tested and compared with PRPC and SFRPC to investigate the effects of basalt fiber contents and fiber type on the mechanical properties and freeze–thaw durability of RPC. Besides, the mass loss rate and compressive strength loss rate of RPC under two freeze–thaw conditions (fresh-water freeze–thaw and chloride-salt freeze–thaw) were tested to evaluate the effects of freeze–thaw conditions on the freeze–thaw durability of RPC. The experiment results showed that the mechanical properties and freeze–thaw resistance of RPC increased as the basalt fiber content increase. Compared with the fresh-water freeze–thaw cycle, the damage of the chloride-salt freeze–thaw cycle on RPC was great. Based on the freeze–thaw experiment results, it was found that SFRPC was sensitive to the corrosion of chloride salts and compared with the steel fiber, the improvement of basalt fiber on the freeze–thaw resistance of RPC was great.

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Section: Compressive Strength Losssupporting

confidence: 80%

Mechanical Properties and Freeze–Thaw Durability of Basalt Fiber Reactive Powder Concrete

Liu

Zhu

et al. 2020

Applied Sciences

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“…E d.FF tests can be performed according to the ASTM C 215 [30] procedures. Changes in the dynamic modulus of elasticity E d.FF , along with the number of freezing and thawing cycles of concrete, can be used directly to assess frost resistance, which was performed in the studies described, for example, in [31][32][33].…”

Section: Measures and Criteria Of Concrete Internal Frost Resistancementioning

confidence: 99%

Impact of Self-Compacting Concrete Admixtures on Frost Resistance and Compressive Strength—Commensurability of Frost Resistance Criteria

Piekarczyk

Łaźniewska-Piekarczyk

2021

Materials

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The article presents the results of original and relevant tests from the point of view of using self-compacting concrete admixtures, especially their compatibility with the cement and mutual compatibility in the case of using several admixtures in one mixture. The research contributes to the recognition of the effect of an unintentionally air-entraining superplasticiser (SP), anti-foam (AFA), viscosity-modifying (VMA) and air-entraining (AEA) admixtures on the internal frost resistance and compressive strength of self-compacting concrete. Positive and undesirable effects of the combined use of several admixtures in this area have not been the subject of extensive analyses and publications so far. Superplasticiser, which unintentionally introduced a large amount of air to the concrete mixture, had a negative effect on the strength of the concrete and a positive effect on frost resistance. The addition of AFA to such concrete did not change the strength but worsened the values of the parameters estimating frost resistance. The AEA admixture resulted in a decrease in the strength of concrete but contributed to a change in the tendency to weaken the frost resistance observed in non-air-entrained concrete. The article also deals with the problem of compliance of the frost resistance criteria estimated upon various measures. It may be disturbing that finding frost resistance based on one criterion does not always mean frost resistance on another criterion. The discrepancies can be significant and misleading.

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“…Fresh concrete mixes were prepared in laboratory vibrating mixer, which allows production of homogeneous mixes with very low w/c. Mixing procedure was performed according to [21]. [27].…”

Section: Testing Proceduresmentioning

confidence: 99%

“…[20]. V. Vaitkevičius proposed for structure analysis of UHPC to apply dynamic modulus of elasticity, ultrasonic pulse velocity and fluorescence test methods [21]. Stefan Jacobsen during research on high performance concrete noticed, that dynamic modulus of elasticity after cyclic freeze-thawing can be recovered almost completely during subsequent storage in water but compressive strength will be recovered only 5% after 22-29% reduction.…”

Section: Introductionmentioning

confidence: 99%

Non-destructive test methods application for structure analysis of ultra-high performance concrete after deterioration of cyclic salt-scaling

Vaitkevičius

Šerelis

Rudžionis

et al. 2014

mech

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Nondestructive Testing of Ultra-High Performance Concrete to Evaluate Freeze-Thaw Resistance

Cited by 11 publications

References 12 publications

Mechanical Properties and Freeze–Thaw Durability of Basalt Fiber Reactive Powder Concrete

Mechanical Properties and Freeze–Thaw Durability of Basalt Fiber Reactive Powder Concrete

Impact of Self-Compacting Concrete Admixtures on Frost Resistance and Compressive Strength—Commensurability of Frost Resistance Criteria

Non-destructive test methods application for structure analysis of ultra-high performance concrete after deterioration of cyclic salt-scaling

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