A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of mixture design of heat resistant alkali-activated aluminosilicate binder-based adhesives
https://orcid.org/0000-0001-7697-2437
HighlightsThermo-resistant adhesives are based on alkali-activated aluminosilicate binders.Reaction products of the formulated binders are represented by zeolites.The adhesives are intended for work at high temperatures (up to 900°C).
AbstractThe study was aimed at producing adhesives with improved thermo-mechanical properties and environmental friendliness and heath safety using alkali-activated aluminosilicate binders in order to meet today’s requirements.A relationship between phase composition of the reaction products after hardening in normal conditions and heating has been established and properties of the formulated alkali-activated aluminosilicate binders and adhesives based on them have been determined.Optimization of binder composition in terms of strength characteristics after hardening and heating has been performed using a two level factorial experiment design with three factors. The results of the study suggested showing that high performance properties of the binders could be provided through a proper choice of optimal ratios of sodium and potassium gel and crystalline structures (zeolites) that were capable to smooth dehydration and following recrystallization into anhydrous compounds of the nepheline and leicite types. These anhydrous compounds determine thermal stability of the resulted artificial stone under action of high temperatures (up to 900°C). The study held allowed to establish optimal ratios of oxides: [(0.5–0.75)Na2O+(0.25–0.5)K2O]/Al2O3=1; SiO2/Al2O3=4; H2O/Al2O3=12.The developed adhesives exhibit high values of thermo-mechanical characteristics in the conditions of use temperatures reaching 900°C (adhesion strength – 0.92 to 1.6MPa, compressive strength up to 68MPa, coefficient of liner thermal expansion up to 8.51·10−6C−1, residual adhesion strength up to 88%, shrinkage up to 1.72%).The developed adhesives have been tried on a pilot scale and used in commercial-scale production of fire resistant structures such as lift doors and frames, as well as tried in bonding heat insulation boards to boilers with surface temperatures over 500°C.
Development of mixture design of heat resistant alkali-activated aluminosilicate binder-based adhesives
https://orcid.org/0000-0001-7697-2437
HighlightsThermo-resistant adhesives are based on alkali-activated aluminosilicate binders.Reaction products of the formulated binders are represented by zeolites.The adhesives are intended for work at high temperatures (up to 900°C).
AbstractThe study was aimed at producing adhesives with improved thermo-mechanical properties and environmental friendliness and heath safety using alkali-activated aluminosilicate binders in order to meet today’s requirements.A relationship between phase composition of the reaction products after hardening in normal conditions and heating has been established and properties of the formulated alkali-activated aluminosilicate binders and adhesives based on them have been determined.Optimization of binder composition in terms of strength characteristics after hardening and heating has been performed using a two level factorial experiment design with three factors. The results of the study suggested showing that high performance properties of the binders could be provided through a proper choice of optimal ratios of sodium and potassium gel and crystalline structures (zeolites) that were capable to smooth dehydration and following recrystallization into anhydrous compounds of the nepheline and leicite types. These anhydrous compounds determine thermal stability of the resulted artificial stone under action of high temperatures (up to 900°C). The study held allowed to establish optimal ratios of oxides: [(0.5–0.75)Na2O+(0.25–0.5)K2O]/Al2O3=1; SiO2/Al2O3=4; H2O/Al2O3=12.The developed adhesives exhibit high values of thermo-mechanical characteristics in the conditions of use temperatures reaching 900°C (adhesion strength – 0.92 to 1.6MPa, compressive strength up to 68MPa, coefficient of liner thermal expansion up to 8.51·10−6C−1, residual adhesion strength up to 88%, shrinkage up to 1.72%).The developed adhesives have been tried on a pilot scale and used in commercial-scale production of fire resistant structures such as lift doors and frames, as well as tried in bonding heat insulation boards to boilers with surface temperatures over 500°C.
Development of mixture design of heat resistant alkali-activated aluminosilicate binder-based adhesives
https://orcid.org/0000-0001-7697-2437
HighlightsThermo-resistant adhesives are based on alkali-activated aluminosilicate binders.Reaction products of the formulated binders are represented by zeolites.The adhesives are intended for work at high temperatures (up to 900°C).
AbstractThe study was aimed at producing adhesives with improved thermo-mechanical properties and environmental friendliness and heath safety using alkali-activated aluminosilicate binders in order to meet today’s requirements.A relationship between phase composition of the reaction products after hardening in normal conditions and heating has been established and properties of the formulated alkali-activated aluminosilicate binders and adhesives based on them have been determined.Optimization of binder composition in terms of strength characteristics after hardening and heating has been performed using a two level factorial experiment design with three factors. The results of the study suggested showing that high performance properties of the binders could be provided through a proper choice of optimal ratios of sodium and potassium gel and crystalline structures (zeolites) that were capable to smooth dehydration and following recrystallization into anhydrous compounds of the nepheline and leicite types. These anhydrous compounds determine thermal stability of the resulted artificial stone under action of high temperatures (up to 900°C). The study held allowed to establish optimal ratios of oxides: [(0.5–0.75)Na2O+(0.25–0.5)K2O]/Al2O3=1; SiO2/Al2O3=4; H2O/Al2O3=12.The developed adhesives exhibit high values of thermo-mechanical characteristics in the conditions of use temperatures reaching 900°C (adhesion strength – 0.92 to 1.6MPa, compressive strength up to 68MPa, coefficient of liner thermal expansion up to 8.51·10−6C−1, residual adhesion strength up to 88%, shrinkage up to 1.72%).The developed adhesives have been tried on a pilot scale and used in commercial-scale production of fire resistant structures such as lift doors and frames, as well as tried in bonding heat insulation boards to boilers with surface temperatures over 500°C.
Development of mixture design of heat resistant alkali-activated aluminosilicate binder-based adhesives
Krivenko, Pavel (author) / Petropavlovsky, Oleg (author) / Vozniuk, Hrygorii (author)
Construction and Building Materials ; 149 ; 248-256
2017-05-15
9 pages
Article (Journal)
Electronic Resource
English
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