Fracture properties of high-strength concrete obtained by direct modification of structure

Solodkyy, Serhiy; Markiv, Taras; Sobol, Khrystyna; Hunyak, Oleksii

doi:10.1051/matecconf/201711601016

Cited by 14 publications

(3 citation statements)

References 8 publications

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“…Slurry surfacing mix forms a characteristic surface with better water resistance and adhesive qualities. It can be used on asphalt or concrete road surfaces [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Hydrochloric and Orthophosphoric Acids Use in the Quick-Traffic Slurry Surfacing Mix

Sidun¹,

Vollis²,

Gunka³

et al. 2020

ChChT

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This article is devoted to development and production (on a lab emulsion plant) of six compositions of slow-setting bitumen emulsions for a slurry-surfacing mix. An aggregate composition for Type 1 (0-5 mm) and Type 3 (0-15 mm) slurry-surfacing mixes was determined and selected. Results of the slurry surfacing mix composition selected by the criteria of a mixture decay, cohesion strength build-up rate and material loss by wet track abrasion testing-on the basis of bitumen emulsions produced from both distilled and oxidized bitumen, using various emulsifiers and both hydrochloric and orthophosphoric acids, are presented in the article. Advantages of using slurry-surfacing mixes based on emulsion produced with orthophosphoric acid and Redicote C-320Е emulsifier were proved. Such a system either minimizes or eliminates in its composition the use of the mixture decomposition regulator and reduces the content of Portland cement. The application of such a system makes it possible to produce slurry surfacing mix on the basis of low acid oxidized bitumen made from light petroleum and rock material through the criterion of the total surface activity determined by methylene blue with high rates of mix curing, and consequently the transport rapid start on the arranged thinlayer coating. Besides, the wet track abrasion indices of this system are substantially lower than in traditional system on oxidized bitumen, and even lower in comparison with the system on distilled bitumen.

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“…Slurry surfacing mix forms a characteristic surface with better water resistance and adhesive qualities. It can be used on asphalt or concrete road surfaces [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Hydrochloric and Orthophosphoric Acids Use in the Quick-Traffic Slurry Surfacing Mix

Sidun¹,

Vollis²,

Gunka³

et al. 2020

ChChT

View full text Add to dashboard Cite

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“…Durability of building constructions plays a crucial role in the modern construction [14][15][16][17][18]. Nowadays, to increase the functional properties of building materials and products, a new promising direction in science is the use of nanotechnology, which involves the creation of new materials and systems at the molecular, nanoscale and microlevels [19][20][21][22].…”

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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“…Thus substitution of clinker by zeolite ensures the increasing of performance and durability of concrete [1]. High strength, freeze/thaw resistance and fracturing of concrete with zeolite are determined by consolidation of microstructure due to formation of hydrosilicates, hydroaluminates and hydrocarboaluminates because of puzzolanic reaction [2].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Complex Additive on Strength and Proper Deformations of Alkali-Activated Slag Cements

Schroeyers

Petropavlovskyi

Rudenko

et al. 2019

MSF

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The peculiarity of alkali-activated slag cements (further, AASC’s) is increased proper deformations, which can cause increased cracking and reduced durability of structure. The paper is devoted to manage AASC’s proper deformations. The main task was to determine the composition of complex additives (further, CA’s) in system «ordinary portland cement (further, OPC) clinker - mineral compound of different anionic type - surfactant» in presence of sodium metasilicate (further, MS) to affect on hydrated AASC performance while ensuring effective structure of artificial stone by criterion of shrinkage deformations. Comparative analysis of hydrated cement systems "OPC clinker - MS", "OPC clinker - mineral compound - MS" and "OPC clinker - mineral compound - MS - surfactant" showed that the greatest effect on reduction of proper deformations occurs when the mineral compounds relate to electrolytes, i.e. Na2SO4 and NaNO3. Hydrated system is characterized by expansion (+0,062 mm/m) in presence of Na2SO4. Almost no shrinkage is supplied by application of NaNO3 (-0,062 mm/m). The obtained CA’s were tested in AASC. CA in the system “OPC clinker - NaNO3 - surfactant” provides the initial setting 43 min, the end - 65 min with accelerated strength. Investigated AASC can be classified as non-shrinking cement. This phenomena is ensured by increasing density, homogeneity and monolithicity of hydrosilicate formations, as well as due to formation of hydroaluminosilicate structures with different morphology by inclusion of nitrate anions.

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Fracture properties of high-strength concrete obtained by direct modification of structure

Cited by 14 publications

References 8 publications

Hydrochloric and Orthophosphoric Acids Use in the Quick-Traffic Slurry Surfacing Mix

Hydrochloric and Orthophosphoric Acids Use in the Quick-Traffic Slurry Surfacing Mix

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

The Influence of Complex Additive on Strength and Proper Deformations of Alkali-Activated Slag Cements

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