HYDRAULIC SUBSTANCE, METHOD OF PRODUCING AND CURING THE SAME, CURING CHAMBER, AND PAINT

Title:

HYDRAULIC SUBSTANCE, METHOD OF PRODUCING AND CURING THE SAME, CURING CHAMBER, AND PAINT

Document Type and Number:

WIPO Patent Application WO/1990/011258

Kind Code:

A1

Abstract:

A method of producing and curing a hydraulic substance and a curing chamber and a paint used in this method in order to prevent cracking of a hardened article and making the same difficultly water-absorbent and highly strong by controlling the formation of an efflorescent component in the step of hardening the hydraulic substance. The method of production comprises using an aqueous solution of lime instead of water to retard the evaporation of water to thereby form dense CaCO¿3?, thus giving a hardened article having a reduced water-absorbency and an increased strength. The method of curing is characterized by conducting the curing while suppressing the evaporation of water or making up for water lost in the step of hardening. Examples of the method include one which comprises conducting curing through, e.g., air drying and supplying water to the surface of the hydraulic substance as soon as it will not be disintegrated by water or the like, and one which comprises injecting at least one member selected from among a fluid which reacts with an efflorescent component, an aqueous solution of lime and a synthetic resin emulsion containing a reactant into the hardened hydraulic substance. The curing chamber includes one provided with a ceiling heater to prevent dewing and one provided with a steam generator, a temperature sensor, a temperature setting device, a temperature control unit, and so forth. The paint comprises a cement slurry and/or a synthetic resin emulsion and a reactant or a colorant and serves to prevent the occurrence of efflorescence.

Inventors:

MITSUO KOJI (JP)
MITSUO MITSUKO (JP)
MITSUO HIROSHI (JP)

Application Number:

PCT/JP1990/000355

Publication Date:

October 04, 1990

Filing Date:

March 16, 1990

Export Citation:

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Assignee:

MITSUO KOJI (JP)
MITSUO MITSUKO (JP)
MITSUO HIROSHI (JP)

International Classes:

B01J6/00; C04B22/00; C04B22/06; C04B40/02; C04B41/45; C04B41/50; C04B41/61; C04B41/65; (IPC1-7): C04B28/02; C04B40/00; C04B41/61

Foreign References:

JPS6186483A	1986-05-01
JPS605085A	1985-01-11
JPS62191483A	1987-08-21
JPS62212277A	1987-09-18
JPH06214517B
JPS5771883A	1982-05-04
JPS608994B2	1985-03-07
JPS59102883A	1984-06-14
JPS5146311A	1976-04-20
JPH05924757B
JPS57149883A	1982-09-16

Other References: