Title:
METHOD OF MINING LIMESTONE AND USING THEREOF
Document Type and Number:
Japanese Patent JP2022102079
Kind Code:
A
Abstract:
To provide a dust scattering inhibitor that is less likely to reduce the strength of a cement kneaded product than a latex-based dust scattering inhibitor, and to mine limestone while preventing the scattering of dust on a face for limestone mining by using this dust scattering inhibitor.SOLUTION: In a limestone mining method, cement paste P, which is a mixture of cement and water, is sprayed on a surface of the limestone in a face for limestone mining and hardened, and then the limestone L is mined. The water-cement ratio in the cement paste P is preferably 200% or more and 1000% or less. A method of using limestone is to use the limestone L mined by the above mining method as a material for the cement kneaded product.SELECTED DRAWING: Figure 1
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Inventors:
TANAKA YUTARO
TACHIKAWA RYUNOSUKE
YAMADA KAZUKI
TACHIKAWA RYUNOSUKE
YAMADA KAZUKI
Application Number:
JP2020216605A
Publication Date:
July 07, 2022
Filing Date:
December 25, 2020
Export Citation:
Assignee:
MITSUBISHI UBE CEMENT CORP
International Classes:
E21C41/22; C04B14/28
Attorney, Agent or Firm:
Naruse Shigeo