Study on the influence of compound rust inhibitor on corrosion of steel bars in chloride concrete by electrical parameters

Wang, Hui; Zhang, Ailian; Zhang, Linchun; Liu, Junzhe; Yan, Han; Shu, Haibin; Wang, Jianmin

doi:10.1016/j.conbuildmat.2020.120763

Cited by 60 publications

(21 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to examine the coupling effect of freeze-thaw cycles and loading strain rate on the compressive peak stress dynamic increase factor of rubber concrete, equation ( 8) was substituted into equation (3). Parameter b 1 was taken a value of 1 according to its specific meaning.…”

Section: Peak Stressmentioning

confidence: 99%

“…As one of the most widely used construction materials, the durability of concrete has long been an important concern in the field of concrete research; particularly, freeze-thaw cycle is considered the main factor in the deterioration of concrete materials [1][2][3]. In engineering practice, concrete may be undergoing a variety of dynamic effects such as earthquakes, impacts, and even explosions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Experimental Study on the Compressive Dynamic Performance of Rubber Concrete under Freeze‐Thaw Cycles

Zhang

Zhang²,

Sun

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

An experimental study was conducted using a hydraulic servo machine to examine the compressive dynamic performance of rubber concrete under freeze-thaw cycles by considering 4 different numbers of freeze-thaw cycles and 8 different strain rates. The compressive stress-strain curves of rubber concrete under different loading conditions were obtained. By comparatively analyzing the mechanical characteristic parameters of the compressive stress-strain curves (i.e., peak stress, elastic modulus, and peak strain), the following conclusions were drawn: at the same loading strain rate, the compressive peak stress of rubber concrete is gradually decreased while the mass loss rate is gradually increased, as the number of freeze-thaw cycles increases. Compared to ordinary concrete, rubber concrete has a better frost resistance property. At the same number of freeze-thaw cycles, the compressive peak stress and elastic modulus of rubber concrete are gradually increased as the loading strain rate increases. The increase in the number of freeze-thaw cycles enlarges the increasing amplitude of the peak stress and elastic modulus under the action of loading strain rate. The compressive peak stress and elastic modulus dynamic increase factors of rubber concrete exhibit a linear relationship with the dimensionless logarithm of the loading strain rate. Meanwhile, a calculation model was proposed for the compressive peak stress dynamic increase factor of rubber concrete under the coupling effect of freeze-thaw cycles and loading strain rate, and the corresponding stress mechanism was discussed in detail. The research findings are of great significance to the application and development of antifreeze concrete in engineering practice.

show abstract

Section: Peak Stressmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Compressive Dynamic Performance of Rubber Concrete under Freeze‐Thaw Cycles

Zhang

Zhang²,

Sun

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…TH2810D LCR digital electric bridge (Changzhou Tonghui Co., Ltd., Changzhou, China) was used to test the electrical resistance with the testing frequency of this electric bridge, ranged from 100 Hz to 10 kHz, and the testing AC voltage varied from 0.1 to 1 V. The schematic diagram of the test device was shown in Figure 1. The measurement of electrical parameters was conducted according to Reference [13]. Each specimen was embedded with a steel bar with length of 6 cm and diameter of 10 mm.…”

Section: Samples Preparation and Measurementmentioning

confidence: 99%

“…In order to research the corrosion resistance of reinforcement in concrete under a corrosive environment, it is necessary to study the state and distribution of chloride ion of reinforced concrete in the condition of carbonation. It should be noted that electrons of iron element of steel bars in concrete are easy to lose when the concrete is applied in corrosive environments, leading to the corrosion of steel bars and rust [12,13]. Moreover, conductive path of pore solution is blocked by rust and the conductivity is reduced.…”

Section: Introductionmentioning

confidence: 99%

Research on the Influence of Carbonation on the Content and State of Chloride Ions and the Following Corrosion Resistance of Steel Bars in Cement Paste

Wang

Zhang

et al. 2020

Coatings

Self Cite

View full text Add to dashboard Cite

In this paper, the changes of free chloride ion concentration and bound chloride concentration in cement paste with different total and proportion of mineral admixtures under carbonation were studied. Moreover, the following corrosion resistance of steel bars buried in cement paste under carbonation was researched by testing the electrical resistance and alternating current (AC) impedance spectroscopy of reinforced cement paste. Results indicated that fly ash and granulated blast furnace slag powder with the content less than 20% by mass ratio of total binder hindered the solidification of chloride ions in cement-based materials, and blast furnace slag powder with the content higher than 20% promoted the solidification of chloride ions in cement paste. The carbonation effect was able to decrease the amount of solidified chloride ion and increase the amount of free chloride ions leading to accelerating the corrosion of reinforcement. Meanwhile, the blast furnace slag powder with the content higher than 20% could effectively promote the corrosion resistance of steel bars.

show abstract

“…The carbonation and chloride action could accelerate the corrosion of steel bars. Some researches reported that the addition of rust inhibitor could improve the corrosion resistance of steel bars [6][7][8][9]. On the other hand, increasing the compactness of concrete could help improve the impermeability of chloride ions in concrete thus improving the corrosion resistance of steel bars in concrete.…”

Section: Introductionmentioning

confidence: 99%

Effect of Assembly Unit of Expansive Agents on the Mechanical Performance and Durability of Cement-Based Materials

et al. 2021

Self Cite

View full text Add to dashboard Cite

This paper studies the influence of assembly unit of expansive agents (CaO and calcium sulphoaluminate) on the limited and free compressive strengths, the limited expansion rate, carbonation resistance, chloride ion penetration resistance and corrosion resistance of reinforcement concrete. The dosages of expansive agent were 0%, 3%, 6%, 9%, and 12% by the total amount of cementitious materials. Two kinds of mineral admixture (blast furnace slag and fly ash) were applied in this study. Results show that suitable dosage (lower than or equal to 9%) of double expansion agent with a large amount of mineral admixtures can improve the limited and free compressive strengths. However, when the dosage of the double expansion agent is higher than 9%, the addition of the double expansion agent leads to the reduction of limited and free compressive strengths. The variation of the limit expansion rate reaches the maximum value when the curing age is 14 days. The increasing addition of expansive agents and lower water-binder ratio demonstrate positive effect on the limited expansion rate. Concrete with 60% mineral admixtures (fly ash and ground granulated blast furnace slag) shows lower limited expansion rate and higher compressive strength than the concrete with 50% mineral admixtures. Finally, the incorporation of double expansion agent can improve the resistance to carbonation, chloride ion penetration resistance, anti-corrosion of steel bars and mechanical strengths (the limited and free compressive strengths).

show abstract

Study on the influence of compound rust inhibitor on corrosion of steel bars in chloride concrete by electrical parameters

Cited by 60 publications

References 42 publications

An Experimental Study on the Compressive Dynamic Performance of Rubber Concrete under Freeze‐Thaw Cycles

An Experimental Study on the Compressive Dynamic Performance of Rubber Concrete under Freeze‐Thaw Cycles

Research on the Influence of Carbonation on the Content and State of Chloride Ions and the Following Corrosion Resistance of Steel Bars in Cement Paste

Effect of Assembly Unit of Expansive Agents on the Mechanical Performance and Durability of Cement-Based Materials

Contact Info

Product

Resources

About