Strength and Fracture Toughness of Cement Concrete, Dispersedly Reinforced by Combination of Polypropylene Fibers of Two Types

Turba, Yurii; Solodkyy, Sergii; Markiv, Taras

doi:10.1007/978-3-030-27011-7_62

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…The compounds were prepared by mixing ingredients in a high-speed mixer so as to achieve compounds having viscosity of 20-30 sec. The solidification of the coating occurred under normal conditions at 18+2 °C [6][7][8][9][10][11].…”

Section: Raw Materials and Methodsmentioning

confidence: 99%

System "dispersed polyvinyl acetate-calcium silicate" in furnishing materials

Petrikova,

Amelina,

Maistrenko

et al. 2023

TIT

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This article focuses on the processes of interaction between calcium silicate hydrates and dispersed polyvinyl acetate in tight films with the aim of developing compounds meant for restoration and finishing works. The basis of this development relies on the concept concerning the determining role of the crystal-chemical factor of the silicate phase in the formation of organic-mineral compounds of increased durability. The characteristics of dispersed calcium silicate hydrates are portrayed. The preparation conditions, accounting for the synthesis of the product of submicrocrystalline structure, conforming with the stoichiometry CaO:SiO2=0.8-2.0 have been determined. The interaction has been studied for compounds achieved by mixing ingredients in a rapid whirling mixer, and subjected to hardening at T=20+2 °C. With the aid of XRD, DTA and Infra-Red Spectrometry methods the formation process of the sophisticated polymer silicate phase in the material was observed for a period of 90 days. The properties of the film were investigated and its high resistance against the influence of external factors was established. On this basis a conclusion concerning the quite high effectiveness of substituting portland cement with dispersed calcium silicate hydrate in polymer cement compounds has been made White colour and other various special properties determine the suitability for repair and finishing works on facades of buildings.

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Section: Raw Materials and Methodsmentioning

confidence: 99%

System "dispersed polyvinyl acetate-calcium silicate" in furnishing materials

Petrikova,

Amelina,

Maistrenko

et al. 2023

TIT

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“…There are number of means to prevent fracturing, for example fiber reinforcement of concrete [26]. It's also well known, that surfactants allow regulating consistency while ensuring high strength of concrete.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of alkali-activated slag cement concretes crack resistance for mitigation of steel reinforcement corrosion

et al. 2020

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The paper is devoted to mitigation of steel reinforcement corrosion in alkali-activated slag cement (further, AASC) concretes, based on soluble sodium silicates (further, SSS's), obtained from high consistensy concrete mixes. Enhancement of AASC fine concretes crack resistance due to modification by complex shrinkage-reducing additives (further, SRA's) based on surfactants and trisodium phosphate Na3PO4 . 12H2O (further, TSP) was proposed for mitigation of steel reinforcement corrosion. SSS's were presented by sodium metasilicate (silica modulus 1.0, dry state) and water glass (silica modulus 2.9, density 1400 kg/m 3 ). In case of sodium metasilicate the application of SRA composition "ordinary portland cement clinker -TSP -sodium lignosulphonate -sodium gluconate" provides enhancement of crack resistance starting from early age structure formation with restriction of drying shrinkage from 0,984 to 0,713 mm/m after 80 d. The effect is caused by reduction of water and by higher volume of crystalline hydrates. In turn, SRA presented by compositions "TSP -glycerol" and "TSP -glycerol -polyacrylamide" provide enhancement of AASC fine concretes fracture toughness during late structure formation with increasing ratio of tensile strength in bending to compressive strength up to 37 -49 % if compare with the reference AASC when water glass is used.

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