PROCESS FOR PRODUCING FLUX FOPR CONCRETE

A levelling (flow promoting) additive for concrete comprises (all pts. wt.): 100 molten beta-naphthalene-sulphonic acid and based on this 2-30 sugar free lignin-sulphonate. The mixt. is heated to 65-70 deg.C. 5-30 aq. conc. formaldehyde soln. The mixt. is agitated at 80-85 deg.C and subsequently neu...

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Bibliographische Detailangaben
Hauptverfasser:	LELKESNE EROES,MARIA,HU, SZABO,KAROLYNE,HU, KAVASSY,MIKLOS,HU, HORVATH,ISTVANNE,HU, JUHASZ,EVA,HU, TOTH,BELA,HU, NEMETH,GABORNE,HU
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A levelling (flow promoting) additive for concrete comprises (all pts. wt.): 100 molten beta-naphthalene-sulphonic acid and based on this 2-30 sugar free lignin-sulphonate. The mixt. is heated to 65-70 deg.C. 5-30 aq. conc. formaldehyde soln. The mixt. is agitated at 80-85 deg.C and subsequently neutralised with sodium hydroxide. 50-150 sugar free lignin-sulphonate . pH is set to 6.5-7.5; the mix is filtered and finally 0.01-0.5% antifoam and 5-10% setting and solidification aid is added. The mixt. is opt. diluted, concentrated or dried to powder.