Content and production method for semi-rigid asphalt concrete

Details Content and production method for semi-rigid asphalt concrete Content and production method for semi-rigid asphalt concrete

1997-07-16

1999-12-14

Melius, Terry Lee

Road structure, process, or apparatus

Pavement

106278, C08L 9500, E01C 1100

Patent

active

060008768

ABSTRACT:
A semi-rigid asphalt concrete that can be produced under ambient temperature by applying traditional cement concrete production method. A high temperature heating and great pressure rolling that are necessary for producing asphalt concrete in conventional skills are never being constraints while producing the semi-rigid asphalt concrete. The method of producing the semi-rigid asphalt concrete generates less air pollution than the traditional method for producing hot mix asphalt concrete. The semi-rigid asphalt concrete consists of cationic emulsified asphalt, type-I cement, F-type superplasticizer, Na-Carboxymethyl Cellulose (Na-CMC), calcium chloride(CaCl.sub.2), stone dust, and III d, IV b, or VII a gradation aggregates. By applying the procedure of producing cement concrete, the semi-rigid asphalt concrete is completely produced after mixing, placing, and curing. The cationic emulsified asphalt and the F-type superplasticizer are first mixed to generate a mixture, and then pour the prepared CaCl.sub.2 and Na-CMC solution for continuous mixing. After the mixture is mixing evenly, the cement, stone dust, fine aggregate, and coarse aggregate are sequentially pouring to the mixture for mixing. While the mixture is mixed evenly, the mixture is placing and curing, and it can be used after harden enough.

REFERENCES:
patent: 4094697 (1978-06-01), Rostler
patent: 4236675 (1980-12-01), Bladykas
patent: 5702199 (1997-12-01), Fishback et al.

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