Prodn. of bituminous gap-filling compsns. for roads - from pre-swollen rubber, mineral filler and blown bitumen (HU 28.2.80)

Bituminous compsns. for filing expansion gaps and joints in road surfaces are produced by first mixing 20-45 wt. % of ground rubber and 55-80 wt. % of a petroleum oil fraction or extract at 20-100 r.p.m. and 25-120 degrees C for 1-3 hr. The mixt. (100 pts. wt.) is then stirred for 30 min. while addi...

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Bibliographische Detailangaben
Hauptverfasser:	AMBRUZS,JOZSEF, RADAK,LASZLO, MOZES,GYULA,DR, SZILVASI,LAJOS, SZELENYI,ISTVAN, CSIKOS,JOZSEF, BARLAI,JOZSEF, MURANYI,ISTVAN, VARGA,TIBOR, FEHERVARI,ANTAL,DR, MAJOR,GYULA,DR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Bituminous compsns. for filing expansion gaps and joints in road surfaces are produced by first mixing 20-45 wt. % of ground rubber and 55-80 wt. % of a petroleum oil fraction or extract at 20-100 r.p.m. and 25-120 degrees C for 1-3 hr. The mixt. (100 pts. wt.) is then stirred for 30 min. while adding 25-50 pts. wt. of spent oil shale and/or cement, and then mixed with 150-250 pts. wt. of preheated (160-180 degrees C) cold-resisting blown bitumen for 1-3 hr. Premixing (swelling) the rubber with petroleum oil improves the properties of the compsn., giving elastic products with a broad plastic temp. range and good adhesion to metals, concrete and asphalt. The products can be used as a ready-made strip or as a hot-pourable mass.