WET CEMENT MORTAR FOR THREE-DIMENSIONAL MOLDING FOR CONSTRUCTION, AND THREE-DIMENSIONAL MOLDING METHOD FOR CONSTRUCTION

Title:

WET CEMENT MORTAR FOR THREE-DIMENSIONAL MOLDING FOR CONSTRUCTION, AND THREE-DIMENSIONAL MOLDING METHOD FOR CONSTRUCTION

Document Type and Number:

WIPO Patent Application WO/2023/022089

Kind Code:

A1

Abstract:

The present invention uses a wet cement mortar for three-dimensional molding for construction. The wet cement mortar is obtained by using a prescribed continuous kneading system 1 to knead a dry cementitious material containing: (A) cement; (B) aggregate; (C) a dispersant in which the mass ratio of a lignin sulfonic acid-based dispersant (R) to a melamine sulfonic acid-based dispersant (M), namely R:M is 100:80-400; (D) a diutan gum which has an average molecular weight within the range 2,000,000-8,000,000 and 0.25% aqueous solution of which has a viscosity of 2000-10,000 mPa·s; (E) a setting retarder; (F) an amorphous calcium aluminosilicate which contains 10-25 mass% of SiO2 in terms of oxide; (G) gypsum; and (H) short fibers. The present invention is capable of providing: a wet cement mortar for three-dimensional molding for construction, which exhibits excellent self-standing properties and strength development properties; and a three-dimensional molding method for construction that uses this wet cement mortar for three-dimensional molding for construction.

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Inventors:

TABARA KAZUTO (JP)
MASHIMO MASAAKI (JP)
SAI YOSHIHIRO (JP)
KANEKO TOMOYA (JP)
SAKAGAMI HAJIME (JP)
NAKAMURA MASAYA (JP)
HIRATA TAKAYOSHI (JP)
ISHIZEKI YOSHIKAZU (JP)

Application Number:

PCT/JP2022/030560

Publication Date:

February 23, 2023

Filing Date:

August 10, 2022

Export Citation:

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Assignee:

OHBAYASHI CORP (JP)
DENKA COMPANY LTD (JP)

International Classes:

C04B28/02; B28B1/30; B28C5/14; C04B14/04; C04B16/06; C04B22/08; C04B22/14; C04B24/06; C04B24/18; C04B24/30; C04B24/38

Domestic Patent References:

WO2021162104A1

2021-08-19

Foreign References:

JP2018140906A	2018-09-13
JP2007245596A	2007-09-27
JPH09317177A	1997-12-09
JP2022023319A	2022-02-08

Other References:

ANONYMOUS: "Diutan gum, safety data sheet", BASF, 1 August 2019 (2019-08-01), XP093037425

Attorney, Agent or Firm:

TAGUCHI, Masahiro et al. (JP)

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