FIELD: metallurgical, by-product coking and glass making industries, more particularly manufacture and repair of brickwork. SUBSTANCE: exothermic mortar comprises, wt. %: ferric oxide, 22-40; aluminium, 17-29; refractory clay, 15-23; alumina, 5-22; gypsum, 4-15; and sodium tripolyphosphate, 1-3. EFFECT: greater refractoriness and low porosity of ceramic bond.
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