The influence of freezing-thawing cycles on the capillary water absorption and porosity of concrete with mineral admixture

Gönen, Tahir; Yazıcıoğlu, Salih; Demirel, Bahar

doi:10.1007/s12205-012-0207-7

Cited by 41 publications

(12 citation statements)

References 14 publications

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“…In the research made by Gonen et al, they found that freezing thawing reduced the compressive strength and ultrasound velocity but it increased the capillary water absorption and porosity. In this study of Lo et al, they stated that the aggregate absorption increases the percentage of the pore area in the interface zone.…”

Section: Resultsmentioning

confidence: 97%

The influence of lightweight aggregate, freezing–thawing procedure and air entraining agent on freezing–thawing damage

Karagöl

Yegin

Polat

et al. 2018

Structural Concrete

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This article presents the results of a study dealing with the concrete resistance to repeated cycles of freezing and thawing of nonair entrained, fine lightweight aggregate (LWA) and air‐entrained concrete when tested in accordance with ASTM C 666, procedures A and B. The water‐to‐binder ratios (w/b) of the mixtures ranged from 0.25 to 0.35, and the percentage of cement replacement by silica fume were 7% on a weight basis and constant throughout study. Binder dosage was 500 kg/m3 and constant. LWA was pumice aggregate (PA) and expanded perlite aggregate (EPA). PA and EPA were replaced by 10, 20, and 30% of total volume of 1 m3 as a fine aggregate (0–2 mm fine aggregate fraction). Also one group was produced with air entraining agent by 0.1% ratio of binder dosage. The 200 freeze–thaw cycles were carried out according to ASTM C666/C666M‐15, procedure A and B. The compressive strength, ultrasonic pulse velocity, relative dynamic modulus of elasticity and dry unit weight of mixtures were investigated. Based upon the analysis of the test data, it is concluded that samples contain air‐entrained agent and 10% LWA were more durable than that of control sample. With the increasing of the LWA content the freeze–thaw resistance of samples decreased. Thus, higher content of LWA is not recommended when it is to be subjected to repeated freeze–thaw cycles. Freezing–thawing procedures were compared with each other and found that procedure A was more severe than procedure B.

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Section: Resultsmentioning

confidence: 97%

The influence of lightweight aggregate, freezing–thawing procedure and air entraining agent on freezing–thawing damage

Karagöl

Yegin

Polat

et al. 2018

Structural Concrete

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“…e macroscopic parameters of measurement included the mass of corrosion, corrosion rate, pull-out force, and bond slippage. e microscopic parameters of measurement included scanning electron microscopy (SEM) and porosity, which was obtained by the water absorption method [32]. e general testing procedure is shown in Figure 2.…”

Section: Materials and Specimen Preparationmentioning

confidence: 99%

The Effect of Freeze-Thaw Damage on Corrosion in Reinforced Concrete

Guan

Chen

et al. 2021

Advances in Materials Science and Engineering

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The existing studies of the corrosion of reinforced concrete have mainly focused on the interface area and chemical ion erosion, ignoring the specific service environment of the reinforced concrete. In this study, the effect of freeze-thaw damage was investigated via corrosion experiments under different freeze-thaw cycle conditions. Steel reinforcement corrosion mass, ultimate pull-out force, corrosion rate, and bond slippage were chosen as characteristic parameters in the experiments, and scanning electron microscopy (SEM) analysis was used to explain the mechanism of action of freeze-thaw damage on corrosion. The results showed that, under identical corrosion conditions, the mass of steel reinforcement corrosion and corrosion rate increased by 39.6% and 39.7% when comparing 200 freeze-thaw cycles to 0 cycles, respectively. The ultimate pull-out force and bond slippage after 200 freeze-thaw cycles decreased by 73% and 31%, respectively, compared with 0 freeze-thaw cycles. In addition, SEM analysis indicated that microstructure damage caused by freeze-thaw cycles accelerated the corrosion reaction and decreased cementitious properties, leading to decreasing ultimate pull-out force and bond slippage. The effect of freeze-thaw cycles and steel reinforcement corrosion on the macro mechanical properties of concrete is not a simple superposition.

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“…In the first swelling stage with a low degree of saturation, the gas in pores is connected only, and the water is separated by gas and soil particles. At this point, a water film is formed due to the migration of capillary water, swelling rapidly the particles (Gonen et al, 2015). The gas in pores is compressed and driven out of the specimen as the pore is contracted, so that water rapidly flows into the inner part of the specimen and the outside water quickly enters the pores.…”

Section: Swelling Rate Analysis Of Each Stagementioning

confidence: 99%

Swelling Research of Expansive Soil Under Drying-Wetting Cycles: A NMR Method

Wei¹,

Dong²

2020

S&R

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The main purpose of this study is to examine the influence of drying-wetting cycles on the swelling of disturbed expansive soil at the micro-scale. Swelling curve -the relationship between swelling displacement and water-absorbing time -is measured based on specimens that experienced 0-4 drying-wetting cycles. Assisted by Nuclear Magnetic Resonance (NMR), the stage characteristic and mechanism influencing swelling curve are analyzed from a pore-change perspective. Specimens that experienced 1-4 cycles show a higher swelling rate when compared with the specimens without drying-wetting cycles; the swelling rates of each swelling curve are found to decrease with an increasing water-absorbing time. These swelling curves are divided into rapid-swelling stage, slow-swelling stage, and slow-stable stage, where three straight lines are used to fit these stages to each curve. The swelling displacement of the specimen increases after the first cycle, whereas it decreases gradually during the following cycles. Changes of pore structure at each stage are considered to be the main factor affecting the swelling rate during the saturating process. Some fine particles and water-soluble cements are lost after multiple cycles, and some smaller pores are converted into larger pores, resulting in an increase in volume and a decrease of swelling displacement. Moreover, the increase of larger pores and the suction difference after various cycles are important factors leading to the difference of the swelling curve and the swelling displacement.

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The influence of freezing-thawing cycles on the capillary water absorption and porosity of concrete with mineral admixture

Cited by 41 publications

References 14 publications

The influence of lightweight aggregate, freezing–thawing procedure and air entraining agent on freezing–thawing damage

The influence of lightweight aggregate, freezing–thawing procedure and air entraining agent on freezing–thawing damage

The Effect of Freeze-Thaw Damage on Corrosion in Reinforced Concrete

Swelling Research of Expansive Soil Under Drying-Wetting Cycles: A NMR Method

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