The effect of Nano-liquid on the properties of hardened concrete

Sharobim, Kamal; Mohammedin, Hassan Ahmed

doi:10.1016/j.hbrcj.2013.08.002

Cited by 9 publications

(3 citation statements)

References 4 publications

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“…To solve this problem, an additional liquid dispersion medium is required, which makes it possible to achieve phase continuity and control the restructuring of the substance in the nanometric order (≤100 nm) [22]. In this direction, the development in the direction of using nano-liquid as accelerators of the processes of early structure formation of cement systems deserves attention [23]. However, such phases do not always allow obtaining an accelerating effect as a result of agglomeration and aging processes.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier

Sanytsky

Kropyvnytska

Нeviuk

et al. 2021

EEJET

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It is shown that high operational reliability of structural materials, in particular at high temperatures, is achieved through the use of ultra-high strength cement composites. Studies of various types of Portland cements with mineral additives of the CEM II/A type have established that a stone based on Portland cement with superzeolite is the most resistant to high temperatures. It has been proven that due to the "self-autoclaving" effect, the strength of a stone based on CEM II/A-P 42.5 R is 1.2–1.3 times higher than a stone based on other types of CEM II/A. To obtain fast-hardening cement composites, a nanotechnological approach based on the use of sol-gel technology has been implemented. Using the methods of IR spectroscopy, electron microscopy, the fact of obtaining, by the chemical method of synthesis, an alkaline nanomodifier N-C-S-H-PCE, which is a nano–liquid based on nano-core seeds of sodium/calcium hydrosilicates, has been proved. It has been confirmed that the introduction of the alkaline nanomodifier N-C-S-H-PCE provides a significant intensification of the early structure formation processes in the paste based on Portland cement with superzeolite (after 12 hours, 24 hours and 28 days, the strength is 16.9; 30.5 and 104.1 MPa). It has been established that the complex combination of Portland cement with superzeolite, corundum aggregate, basalt fiber and alkaline nanomodifier provides rapid-hardening of ultra-high strength cement composites (T=400 °C) with improved operational properties. Thus, there is reason to assert the feasibility of developing rapid-hardening ultra-high strength cementitious composites. This solves the problems associated with the need to increase their early strength and performance. As a result, it is possible to carry out repair work to protect equipment from abrasive wear at elevated temperatures

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier

Sanytsky

Kropyvnytska

Нeviuk

et al. 2021

EEJET

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“…Ключовi слова: керамiчна лицьова цегла, пористiсть, водопоглинання, гiдрофобiзуючi речовини, нано-рiдина UDC 691.42 DOI: 10.15587/1729-4061.2018.145246 increase the indicator of frost resistance and durability of the brickwork [11,12].…”

Section: проведеними дослIдженнями встановлено що керамIчна лицьова unclassified

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

Kropyvnytska

Semeniv

Kotiv

et al. 2018

EEJET

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“…Nanosized particles and components of a nanoscale system have new properties that are important for the development of new products and applications. Studies [23,24] have proven to be more effective in protecting surfaces with nano-liquids, which reduces the water absorption, the permeability coefficient, and increases the water resistance of surface structures. G. Kamal's [25] investigations showed that the nano-liquid does not affect the strength when applied to the surface of hardened concrete.…”

Section: Introductionmentioning

confidence: 99%

Effects of Nano-liquids on the Durability of Brick Constructions for External Walls

Kropyvnytska

Semeniv

Kotiv

et al. 2020

Lecture Notes in Civil Engineering

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The effectiveness of the influence of modifying substances on the properties of ceramic facing brick and masonry surface for decorative external walls is considered in the article. X-ray diffraction and spectral analysis showed that sodium sulfate, potassium sulfate and syngenite are the salt effloresces from the ceramic brick surface. It is established that polymeric one-component coatings based on siloxanes are not effective, especially under the action of alternating temperatures. Studies have shown that the improvement of the performance properties of ceramic facing brick increase due to the surface coating by nano-liquids with the addition of nano-Al 2 O 3 . The surface modification of the ceramic facing brick by hydrophobic nano-liquids allows sealing the structure due to the colmatation of pores, which reduces the capillary tightening of the masonry. It also leads to increased weather resistance and frost resistance of masonry. It is established that the surface protection of brick structures with hydrophobic nano substances provides a decrease in the porosity, increase the water resistance and durability. This allows to confirm the relevance of the revealed influence of the modifiers on the formation of properties and the practical attractiveness of the proposed technological solutions.

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The effect of Nano-liquid on the properties of hardened concrete

Cited by 9 publications

References 4 publications

Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier

Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier

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

Effects of Nano-liquids on the Durability of Brick Constructions for External Walls

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The effect of Nano-liquid on the properties of hardened concrete

Cited by 9 publications

References 4 publications

Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier

Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier

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

Effects of Nano-liquids on the Durability of Brick Constructions for External Walls

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