Moscow, Moscow, Russian Federation
Russian Federation
Moskva, Moscow, Russian Federation
UDK 691.335 на основе других неорганических вяжущих
UDK 666.914 Гипсовые строительные материалы и изделия. Гипсовые растворы
GRNTI 67.09 Строительные материалы и изделия
OKSO 08.04.01 Строительство
BBK 383 Строительные материалы и изделия
TBK 6 ЕСТЕСТВЕННЫЕ НАУКИ. МАТЕМАТИКА
The possibility of application of aggregate on the basis of waste recycled car tyres in gypsum-concrete composites is considered. Technological, physical-mechanical, thermal and acoustic properties of the composite with the content of light-weight aggregate 5, 10 and 20 % are investigated. The data for two types of rubber crumb: 0.8- and 0.6-mm fractions are presented. It was found that the introduction of lightweight aggregate of 0.6 mm fraction reduces the mobility of the mix-ture by 10.8, 21.6 and 45.9 %, respectively, and the aggregate of 0.6 mm fraction by 8.1, 29.7 and 40.5 %; the introduc-tion of rubber crumb of 0.6 fraction reduces the compressive strength by 30, 38 and 55 %, the introduction of lightweight aggregate of 0.8 mm fraction reduces the strength by 27, 36 and 56 %, respectively; density of gypsum concrete with 0,8 mm fraction aggregate decreases up to 1190 kg/m3, and with 0,6 mm fraction up to 1170 kg/m3; thermal conductivity of the composite decreases by 20 % at introduction of 20 % of rubber crumb of 0,6 mm fraction, and 0,8 mm fraction by 14 %; acoustic properties increase, the efficiency of sound absorption of gypsum concrete without filler was 5,2 - 39,6 %, with light filler of 0,6 mm fraction and 20 % content was 6,5 - 47,6 %, and 0,8 mm fraction was 7,9 - 50,4 %. The developed composition can be used as an initial composition for production of gypsum board, gypsum plasterboard sheets and other similar products.
crumb rubber, rubber, secondary raw materials, sound absorption, gypsum composite.
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