Disperse-Reinforced Polystyrene Concrete Modified by Silica-Containing Additive

Pykin, A.A.; Лукутцова, Н П; Golovin, S.N.

doi:10.4028/www.scientific.net/msf.992.20

Cited by 2 publications

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References 9 publications

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“…Modern trends in the development of building materials science are associated with the need to develop new energy-saving materials and products of porous and large-pore structures [1,2], including those based on gypsum binders and compositions based on them [3,4], which have high strength, low values of average density and thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Properties and Microstructure of Gypsum Stone with Synthetic and Protein Foaming Agents

Лукутцова

Pykin

Golovin

et al. 2020

Lecture Notes in Civil Engineering

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The influence of synthetic (Penostrom) and protein (Foam X) foaming agents on the physical and mechanical properties and microstructure of gypsum stone obtained by dry mineralization of low multiplicity foams (4-6) with high-strength separated gypsum was studied. When using foam based on the foaming agent Penostrom, the average density of gypsum stone is reduced to 430 kg/m 3 (by 3 times), the coefficient of thermal conductivity to 0.14 W/(mÁ°C ) (by 4 times), the compressive strength to 2.4 MPa (by 6 times). Foam based on foaming agent Foam X increases the compressive strength of gypsum stone to 17.5 MPa (by 1.2 times) with a slight increase in the average density (by 3%) and the coefficient of thermal conductivity (by 5%). It was found that the microstructure of gypsum stone with Penostrom is represented by largedispersed crystals of calcium sulfate dihydrate of plate-acicular morphology, meso pores (diameter 3.5-33 nm) with volume of 43•10 −3 cm 3 /g, macro pores (diameter 60-130 nm) with volume of 30•10 −3 cm 3 /g. The microstructure of gypsum stone with Foam X is characterized by the content of fine-dispersed, densely packed crystals CaSO 4 •2H 2 O of prismatic habitus, meso pores (diameter 3.5-33 nm) with volume of 57•10 −3 cm 3 /g, macro pores (diameter 60-130 nm) with volume of 19•10 −3 cm 3 /g.

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Section: Introductionmentioning

confidence: 99%