Effect of aircraft deicer on deicer-scaling resistance and frost resistance of airport pavement concrete

Lai, Yuanming; Liu, Y; Wang, P; X, D; Guo, Baohua; Sun, Kun; Hou, Sailong

doi:10.1088/1742-6596/1605/1/012178

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…In recent years, many airports have experienced cracks, spalling, warping, misalignment, and even sand and stones in the process of cement concrete pavement [4,5], which mainly reflects the durability of concrete, seriously affects the normal operation of airport runways and the safety of aircraft takeoff and landing, and may even cause the failure of runway function or serious flight accidents [6,7]. In addition, the combination of a harsh climatic environment, frequent sudden natural disasters, and an unnatural environment (such as de-icing salt) accelerates the damage and service-life shortening of airport concrete pavement surfaces [8][9][10]. Concrete's carbonation, water and chloride ion penetration, sulfate corrosion, freeze-thaw 2 of 18 damage, and alkali-aggregate reaction are all related to its permeability [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Modified Tetraethyl Orthosilicate Surface Treatment Agents on the Permeability of Airport Pavement Concrete

2022

Coatings

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In this paper, three modified tetraethyl orthosilicate surface treatment agents were prepared by using tetraethyl orthosilicate (TEOS) as the preparation monomer, isobutyltriethoxysilane (IBTS) as the hybridizer, and acrylic acid, phosphoric acid, and hydrochloric acid as the catalysts. The effects of the three modified tetraethyl orthosilicate surface treatment agents on the permeability of airport pavement surface concrete were investigated by water absorption tests, water contact angle tests, water penetration resistance tests, chloride ion penetration resistance tests, and carbonation tests, and the mechanisms of action of the modified tetraethyl orthosilicate surface treatment agents were analyzed by microscopic tests. The results showed that all three tetraethyl orthosilicate surface treatment agents could significantly improve the impermeability of concrete, among which the modified tetraethyl orthosilicate surface treatment agent with hydrochloric acid as the catalyst had the most obvious effect on the improvement of the impermeability of concrete. Acrylic acid was weaker than hydrochloric acid as the catalyst of a modified tetraethyl orthosilicate surface treatment agent for the improvement of concrete impermeability; it was only slightly stronger than hydrochloric acid as the catalyst of modified tetraethyl orthosilicate surface treatment agent in terms of the improvement of concrete’s resistance to water penetration, and the difference between the two was not significant. Phosphoric acid as a catalyst of the modified tetraethyl orthosilicate surface treatment agent was the least effective for concrete impermeability; it was only stronger than the other two modified tetraethyl orthosilicate surface treatment agents in the improvement of concrete resistance to carbonation, and the carbonation depth of the concrete was only 1 mm in 28 days. SEM and MIP tests showed that the modified tetraethyl orthosilicate surface treatment agents improved the impermeability of concrete mainly by producing additional hydrated calcium silicate gel to plug microcracks and pores, reduce the total porosity of the concrete and the number of multi-harmful and harmful pores, and improve the compactness of the concrete. The test results can provide a reference for the development of modified tetraethyl orthosilicate surface treatment agents and their application in airport pavement surface engineering.

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Section: Introductionmentioning

confidence: 99%

Effect of Modified Tetraethyl Orthosilicate Surface Treatment Agents on the Permeability of Airport Pavement Concrete

2022

Coatings

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“…Lai Y. [ 13 ] investigated the influence of runway deicing salts (the main component is CH 3 COOK) on the salt-freezing resistance of airport runway concrete. They discussed the influence of freezing–thawing cycles in the water and runway deicing salt environment on the apparent morphology, mass loss rate, and relative dynamic elastic modulus of concrete.…”

Section: Introductionmentioning

confidence: 99%

Study on Durability and Pore Characteristics of Concrete under Salt Freezing Environment

et al. 2021

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The macroscopic mechanical properties and frost resistance durability of concrete are closely related to the changes in the internal pore structure. In this study, the two-dimensional and three-dimensional ICT (Industrial Computerized Tomography) pore characteristics of C30 concrete specimens before and after freezing and thawing in clean water, 5 wt.% NaCl, 5 wt.% CaCl2, and 5 wt.% CH3COOK solution environments are obtained through concrete frost resistance durability test and ICT scanning technology. The effects of pore structure changes on concrete frost resistance, durability, and compressive strength mechanical properties after freezing and thawing cycles in different salt solution environments are analyzed. This paper provides new means and ideas for the study of concrete pores. The results show that with the increase in the freezing and thawing times, the concrete porosity, two-dimensional pore area, three-dimensional pore volume, and pore number generally increase in any solution environment, resulting in the loss of concrete compressive strength, mortar spalling, and the decrease in the relative dynamic elastic modulus. Among them, the CH3COOK solution has the least influence on the concrete pore changes; the NaCl solution has the greatest influence on the change in the concrete internal porosity. The damage of CaCl2 solution to concrete is second only to the NaCl solution, followed by clean water. The increase in the concrete internal porosity from high to low is NaCl, CaCl2, clean water, and CH3COOK. The change in the pore volume of 0.1 to 1 mm3 after the freeze–thaw cycle is the main factor for reducing concrete strength. The test results have certain guiding value for the selection of deicing salt in engineering.

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Strength, Abrasion Resistance and Frost Resistance of Fiber Concrete of Hard Pavement With Basalt Fiber and Air-Entraining Admixture

Shestakova,

Kroviakov

2023

Dorogimosti

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Introduction. Increasing the durability of hard pavements allows you to reduce road maintenance costs by extending the intervals between repairs. Dispersed reinforcement is a well-known method of increasing the frost resistance and abrasion resistance of concrete, which has a positive effect on the durability of pavements in typical for Ukraine climatic conditions. Basalt fiber is resistant to corrosion and relatively inexpensive, which makes it promising for use in the road industry. Also, plasticizing and air-entraining admixtures must be used for concrete of hard pavement. Problem Statement. In modern economic conditions and taking into account the technological features of the preparation of mixtures, it is relevant to compare the effectiveness of the use of known methods of improving the properties of concrete for hard pavements: dispersed reinforcement and the use of air-entraining admixtures. Studying the expediency of the simultaneous use of these two methods of modifying the concrete mixture is also an important task from a scientific and practical point of view. Purpose. Determination of the influence of basalt fiber and air-entraining admixture on the strength, frost resistance and abrasion resistance of concrete of hard pavements.

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Effect of aircraft deicer on deicer-scaling resistance and frost resistance of airport pavement concrete

Cited by 3 publications

References 5 publications

Effect of Modified Tetraethyl Orthosilicate Surface Treatment Agents on the Permeability of Airport Pavement Concrete

Effect of Modified Tetraethyl Orthosilicate Surface Treatment Agents on the Permeability of Airport Pavement Concrete

Study on Durability and Pore Characteristics of Concrete under Salt Freezing Environment

Strength, Abrasion Resistance and Frost Resistance of Fiber Concrete of Hard Pavement With Basalt Fiber and Air-Entraining Admixture

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