| 摘要 |
PROBLEM TO BE SOLVED: To provide a mortar spraying method capable of easily adjusting the strength of mortar to be prepared by mixing a powder mixture with a liquid mixture immediately before spraying. ! SOLUTION: The mortar spraying method includes: separately preparing a powder mixture which contains cement and aggregates, and a liquid mixture which contains water and a polymer admixture; preparing a mortar by mixing the powder mixture and the liquid mixture immediately before spraying; and spraying the mortar toward an application site through a spray nozzle. Prior to preparation of the mortar, the relation between the ratio of the polymer admixture to the cement and the strength of the mortar is obtained. Based on the relation, the concentration of the polymer admixture is adjusted to have a desired strength. ! COPYRIGHT: (C)2015,JPO&INPIT |
