Studying the efect of nano­liquids on the operational properties of brick building structures

Kropyvnytska, Тetiana; Semeniv, Roksolana; Kotiv, Roman; Kaminskyy, A T; Hots, Vladyslav

doi:10.15587/1729-4061.2018.145246

Cited by 12 publications

(5 citation statements)

References 13 publications

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“…Nanomodification is based on introduction of nanosized additives (SiO 2 , TiO 2 , Al 2 O 3 , etc.) and carbon nanotubes [25,26]. The study results show that the use of nanosilica accelerates early pozzolanic reaction in the cement matrix due to its high solubility in alkaline media.…”

Section: Literature Review and Problem Statementmentioning

confidence: 85%

Development of nanomodified rapid hardening clinker-efficient concretes based on composite Portland cements

Kropyvnytska

Sanytsky

Rucińska

et al. 2019

EEJET

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Section: Literature Review and Problem Statementmentioning

confidence: 85%

Development of nanomodified rapid hardening clinker-efficient concretes based on composite Portland cements

Kropyvnytska

Sanytsky

Rucińska

et al. 2019

EEJET

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“…the strength of the alkali-activated slag cement pastes at 28 days was only by 1.5% lower compared to that of the cement composition without additive, and by the age of 180 days this difference practically not exist. This can be attributed to the following: known-inthe-art is that one of the methods of how to increase strength of concrete is to fill a cement matrix with mineral additives − finely dispersed mineral particles of various nature and fractional composition (54,56,57).…”

Section: Compressive Strengthsmentioning

confidence: 99%

Influence of whitening additives on the properties of decorative slag-alkali cements and mortars

et al. 2023

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The paper shows a comparative study of the influence of whitening additives (kaolin, TiO2 and СаСО3) on the production of decorative alkali-activated slag cement and mortars with a degree of whiteness of at least 70%; as well as their influence on the structure formation and evolution of physico-mechanical properties. According to results obtained, kaolin provides chemical bonding of Na+ into insoluble zeolite-like compounds; and CaCO3 densifies the structure and reduces shrinkage deformations. At the early stages of hardening (up to 7 days), the additions of kaolin and calcite, due to their significant amount (15 and 24%), reduces the compressive strength of the cement paste; nevertheless, at later ages (until 90 days) the difference in strength almost disappears. The high colourfastness and weather resistance of pigmented cements under the influence of ultraviolet radiation and freeze/thaw cycles has been established. A comparative assessment of the economic efficiency has shown that СаСО3 is the best cost-effective additive.

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“…Це можна пояснити таким чином. Відомо, що одним з методів підвищення міцності бетону є заповнення матриці цементного в'яжучого мінеральними добавками − дрібнодиспер-сними мінеральними частинками різної природи та фракційного складу [27][28]. Дисперсні карбонатні породи [29,30], мають певну хімічну спорідненість до шлаколужного цементу і розмір частинок, близький до розміру частинок шлаколужного цементу.…”

Section: міцністьunclassified

Performance Characteristics of Slag-Alkali Decorative Cements and Mortar

Kryvenko¹,

Gots²,

Гелевера³

et al. 2022

БКТП

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The use of slag-alkaline cements as decorative cements is quite promising. When using bleaching additives TiO2, kaolin and CaCO3, white cements with a degree of whiteness of 70...94%were obtained. But in addition to decorative properties, such cements and materials based on them are subject to requirements to ensure the necessary technological and operational properties.The article discusses the main operational properties of decorative slag-alkaline concrete mortars - long-term strength, water-holding capa-city of mixtures, resistance to fflorescence, resistance to steaming and exposure to atmospheric factors(frost resistance, weather resistance, color stability).It has been established that white slag-alkali cements at the age of 28 days have a compressive strength of 49...56,8 MPa. All compositions of white cements have good hardening dynamics and, based on the strength at the age of 2 days 35...37 MPa, they can be classified as fast hardening. It hasbeen established that in the long term (3 months ormore) the strength of slag-alkaline decorative cements practically does not differ from the control compositions and amounts to 66,5...67,5 MPa.All compositions of slag-alkaline decorative solutions demonstrate high frost resistance. It has been established that the loss of their strength after 150 cycles of freezing and thawing (which corresponds to the F200 brand) is only 1,73...3,87%, there are no weight losses, no surface peeling is observed. All samples of slag-alkaline decorative mortars containing bleaching additives successfully passed the weather resistance test. Their strength loss after 100 cycles of soaking and drying amounted to 6,5...9,2% with an allowable 25%.The high color fastness of slag-alkali decorative pigmented cements to the effects of ultraviolet radiation and steaming has been established. Color as a result of exposure to ultraviolet irradiation and thermal treatment has not changed. In addition to industrial mineral pigments, red mud, which is awaste product of alumina production, has been successfully used as a pigment.In the course of the work, the tendency of decorative slag-alkaline solutions to efflorescence was studied. The introduction of 0,25...0,5% sodium carboxymethylcellulose additive completely eliminates their appearance, improves the water-retaining capacity of solutions and their plasticity.

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Studying the efect of nanoliquids on the operational properties of brick building structures

Cited by 12 publications

References 13 publications

Development of nanomodified rapid hardening clinker-efficient concretes based on composite Portland cements

Development of nanomodified rapid hardening clinker-efficient concretes based on composite Portland cements

Influence of whitening additives on the properties of decorative slag-alkali cements and mortars

Performance Characteristics of Slag-Alkali Decorative Cements and Mortar

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Studying the efect of nano­liquids on the operational properties of brick building structures

Cited by 12 publications

References 13 publications

Development of nanomodified rapid hardening clinker-efficient concretes based on composite Portland cements

Development of nanomodified rapid hardening clinker-efficient concretes based on composite Portland cements

Influence of whitening additives on the properties of decorative slag-alkali cements and mortars

Performance Characteristics of Slag-Alkali Decorative Cements and Mortar

Contact Info

Product

Resources

About

Studying the efect of nanoliquids on the operational properties of brick building structures