Influence of Biodegradable Release Oils on the Physical and Mechanical Properties of Light-Colored Architectural Concrete

Barnat-Hunek, Danuta; Szafraniec, Małgorzata

doi:10.3390/ma14164630

Cited by 5 publications

(6 citation statements)

References 16 publications

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“…As a result of the application of silanes by Szubert et al [34], the concrete surface achieved very good hydrophobicity with a contanct angle of up to 126°, and the concrete water absorption decreased by 96%. The siloxane changes the hydrophilicity of the capillary surface and makes it hydrophobic because it contains hydrocarbons in its structure as demonstrated, among others, by Kang et al [37], Barnat-Hunek et al [20,21,25], Maravelaki-Kalaitzaki [43].…”

Section: Water Absorptionmentioning

confidence: 93%

“…Because of their hydrophobic characteristics, they may be utilized to make mold release agents [24], making them ideal for use in hydrophobizing formulations. The authors in their previous publications [25,26] have shown that the application of higher fatty acids on the concrete surface does not cause discoloration of its surface, or deterioration of the properties of the finished material. Furthermore, while the publication [23] discusses the possibility of utilizing vegetable oil in the construction business, there are no reports in the literature on the usage of higher fatty acids for the concrete surface protection.…”

Section: Introductionmentioning

confidence: 99%

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Modification of Concrete Surface with Higher Fatty Acids

Barnat-Hunek¹,

Andrzejuk²,

Szafraniec³

et al. 2023

Adv. Sci. Technol. Res. J.

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The paper's research focuses on the development of novel hydrophobizing agents and the demonstration of their efficiency on a concrete surface. The starting materials are based on natural oils, water-soluble silanes and siloxanes, and/or tap water. Aqueous preparations have qualities that limit the influence of volatile organic compounds (VOCs) on the environment since they solely include biodegradable components. According to research, the higher fatty acids obtained from vegetable oils and derived from the glycerin phase can be employed as a component of concrete hydrophobizing agents while matching the standard requirements for such agents. Analysis of the usage of vegetable oil as a basis ingredient in the manufacturing of industrial substances shows that it is biodegradable with at least 95% certainty. The reference concrete after the frost resistance test showed a weight loss of 1.8%. In the case of hydrophobization, the weight loss was 33.3 to 72% less than the reference samples. In the case of concrete hydrophobized with the glycerin agents, the salt crystallization occurred inside the structure of the material without causing any damage, with the reference concrete showing a weight loss of 0.8%.

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Section: Water Absorptionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Modification of Concrete Surface with Higher Fatty Acids

Barnat-Hunek¹,

Andrzejuk²,

Szafraniec³

et al. 2023

Adv. Sci. Technol. Res. J.

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“…The viscosity value remains high compared to the recommendation of 30 mPa.s at 20°C [25]. The viscosity values found in the literature lie between 0.02 Pa.s and 0.05 Pa.s [25,[39][40][41]. However, Hashin Mohseni's [42] and Loh's [43] research on vegetable oils (palm) demonstrated an improved mold release functionality due to its higher viscosity qualities.…”

Section: Viscosity Analysismentioning

confidence: 94%

Synthesis and characterization of release agent from used cooking oil at the concrete/formwork interface

Libessart

Anceur

Djelal

et al. 2023

Int. J. Environ. Sci. Technol.

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For this preliminary study, the lubricating properties of six formulations containing used cooking oils were tested. The physicochemical properties involved were determined by measuring viscosities at temperatures between 0° and 40°C as well as by calculating adhesion energies. The formwork/concrete interface was then studied on the steel surface by means of both tribological measurements and analysis of facing quality at 1 day and 7 days after stripping. The results obtained were compared with a marketed vegetable-based oil. The physicochemical results revealed attractive parameters despite a viscosity that remained high. The liquid/vapor surface tensions and wettabilities measured satisfied the recommendations, i.e. greater than 30 mN/m and less than 30°. The selected formulation offered the best compromise between composition and the physicochemical recommendations. At the formwork/concrete interface and for a scraped application, satisfactory criteria were derived, with a 35% reduction in friction and an acceptable facing quality for this initial study.

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“…The research material consisted of two hydrophobic liquids, one containing industrial rapeseed oil (VOA) and the other a mineral oil-based formulation commercially available on the domestic market (MOA), as well as three types of raw wood samples: aspen, pine, and oak. The pine (Pinus sylvestris L.), aspen (Populus tremula L.), and oak (Quercus L.) woods were obtained from a mixed forest located in the eastern part of Lubelskie Voivodeship in Poland, 51.686923, 23.295797, Podedwórze. The trees had been felled in the winter of 2018 (March), after which their trunks were planked and seasoned outdoors with wooden strip spacers in place to ensure uninterrupted air circulation.…”

Section: Origin Of the Research Materialsmentioning

confidence: 99%

“…The tests were consistent with appendices 1 and 3 to SPO/BS/01/b (rev. 5) and the PN ISO 9408:2005 standard [23].…”

Section: Biodegradability Testingmentioning

confidence: 99%

Comparative Analysis of Vegetable and Mineral Oil-Based Antiadhesive/Hydrophobic Liquids and Their Impact on Wood Properties

Kachel,

Krawczuk,

Krajewska

et al. 2023

Materials

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The unavailability of biodegradable preservatives is one of the major setbacks in the construction industry. With this in mind, our study focused on the analysis and comparison of two hydrophobic liquids, one vegetable oil-based (VOA) and the other mineral oil-based (MOA), and subsequently applying the same on three types of wood. The comparison of the vegetable oil-based (VOA) and mineral oil-based (MOA) hydrophobic liquids revealed that VOA was characterized by an 83.4% susceptibility to aerobic biodegradation, while MOA was considerably more resistant (47.80%). Based on the conducted contact angle measurements, it was observed that the wettability of pine and oak wood decreased after the application of both VOA (for pine—twice; for oak—by 38%) and MOA (for pine—more than two times; for oak—by 49%), while in the case of aspen, the same was increased (after the application of VOA—by 20%; after the application of MOA—by 2%). The observed depth of penetration into the structure of the impregnated wood was lower for the VOA impregnant as compared to the MOA impregnant. This result persisted in all types of wood used in the experiment. Observations of the process of water absorption during soaking revealed that VOA was more beneficial in terms of lowering water absorption into the material, regardless of wood type. The overall results were better for VOA, which lowered the mass of soaked wood by between 19.73 and 66.90%.

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Influence of Biodegradable Release Oils on the Physical and Mechanical Properties of Light-Colored Architectural Concrete

Cited by 5 publications

References 16 publications

Modification of Concrete Surface with Higher Fatty Acids

Modification of Concrete Surface with Higher Fatty Acids

Synthesis and characterization of release agent from used cooking oil at the concrete/formwork interface

Comparative Analysis of Vegetable and Mineral Oil-Based Antiadhesive/Hydrophobic Liquids and Their Impact on Wood Properties

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