C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
402/351, 400/810
C04B 25/04 (1980.01)
Patent
CA 1086884
ABSTRACT OF THE DISCLOSURE Novel sulphur cement pre-mixes and sulphur cement and concretes derived therefrom are provided herein. They contain, in addition to the sulphur, a bonding agent which is adapted to stabilize the sulphur cement or sulphur concrete against pro- gressive embrittlement and mechanical failure under thermal or physical stress, the bonding agent being selected from the group consisting of (i) up to 10% by weight of the total amount of sulphur, of a liquid organic agent adapted to stabilize said sulphur cement against progressive embrittlement and subsequent crumbling under thermal stress, said agent comprising an olefinic hydrocarbon polymer material, and having a non-volatile content greater than 50% by weight and a minimum Wijs iodine number of 100 cg/g, such polymer material being capable of reacting with sulphur to form a sulphur-containing polymer and being present in the sulphur cement as said sulphur-containing polymer; and (ii) a mixture of up to 10% by weight of the total amount of sulphur, of said liquid organic agent (i) and, for each 100 parts by weight of sulphur, from 10 to 150 parts by weight of a viscosity increasing, surface active, finely divided, particulate solid inorganic agent, said inorganic agent being of a size passing through a screen having a sieve opening of 0.147 mm, and being selected from the group consisting of fly ash, dolomite, pulver- ized limestone and a mixture of pyrites and pyrrhctites. Novel sulphur concretes are also provided, which are made from sulphur cement and conventional natural or manufactured aggregates. These sulphur cements do not suffer from the progressive embrit- tlement and mechanical failure under thermal or physical stress, of the hertofore provided conventional sulphur cements or sulphur concretes.
332505
Marcus & Associates
Vroom Alan H.
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