A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING TOBERMORITE-CONTAINING HOUSING MATERIAL, TOBERMORITE, AND TOBERMORITE-CONTAINING HOUSING MATERIAL
To provide a method for producing a tobermorite-containing housing material that contains tobermorite in which carbonization is hard to occur.SOLUTION: A method for producing a tobermorite-containing housing material includes the steps of: preparing a hydrous composition; and subjecting the hydrous composition to hydrothermal synthetic reaction at temperature of 160 to 180°C. The hydrous composition comprises: a calcium compound containing at least one of Ca(OH)2 and CaO; SiO2; at least one sulfate selected from the group comprising Li2SO4, Na2SO4, MgSO4, ZnSO4, and (NH4)2SO4; and water. In the hydrous composition, assuming that a total molar number of the calcium compound and SiO2 is 0.18 mol: when Li2SO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 1.43 mmol; when Na2SO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 1.15 mmol; when MgSO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 2.30 mmol; when ZnSO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 1.43 mmol; and (NH4)2SO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 2.30 mmol.SELECTED DRAWING: Figure 1
【課題】炭酸化が起こりにくいトバモライトを含むトバモライト含有建材の製造方法を提供する。【解決手段】Ｃａ（ＯＨ）２及びＣａＯのうちの少なくとも一方を含むカルシウム化合物と、ＳｉＯ２と、Ｌｉ２ＳＯ４、Ｎａ２ＳＯ４、ＭｇＳＯ４、ＺｎＳＯ４及び（ＮＨ４）２ＳＯ４からなる群より選ばれる少なくとも一種の硫酸塩と、水と、を含み、カルシウム化合物とＳｉＯ２の合計モル数を０．１８ｍｏｌとしたときの硫酸塩のモル数が、硫酸塩がＬｉ２ＳＯ４の場合は０．５７〜１．４３ｍｍｏｌ、Ｎａ２ＳＯ４の場合は０．５７〜１．１５ｍｍｏｌ、ＭｇＳＯ４の場合は０．５７〜２．３０ｍｍｏｌ、ＺｎＳＯ４の場合は０．５７〜１．４３ｍｍｏｌ、（ＮＨ４）２ＳＯ４の場合は０．５７〜２．３０ｍｍｏｌの範囲内にある含水組成物を調製する工程と、含水組成物を１６０〜１８０℃の温度で水熱合成反応させる工程と、を有するトバモライト含有建材の製造方法。【選択図】図１
METHOD FOR PRODUCING TOBERMORITE-CONTAINING HOUSING MATERIAL, TOBERMORITE, AND TOBERMORITE-CONTAINING HOUSING MATERIAL
To provide a method for producing a tobermorite-containing housing material that contains tobermorite in which carbonization is hard to occur.SOLUTION: A method for producing a tobermorite-containing housing material includes the steps of: preparing a hydrous composition; and subjecting the hydrous composition to hydrothermal synthetic reaction at temperature of 160 to 180°C. The hydrous composition comprises: a calcium compound containing at least one of Ca(OH)2 and CaO; SiO2; at least one sulfate selected from the group comprising Li2SO4, Na2SO4, MgSO4, ZnSO4, and (NH4)2SO4; and water. In the hydrous composition, assuming that a total molar number of the calcium compound and SiO2 is 0.18 mol: when Li2SO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 1.43 mmol; when Na2SO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 1.15 mmol; when MgSO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 2.30 mmol; when ZnSO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 1.43 mmol; and (NH4)2SO4 is selected as the sulfate, the molar number of the sulfate is in a range of 0.57 to 2.30 mmol.SELECTED DRAWING: Figure 1
【課題】炭酸化が起こりにくいトバモライトを含むトバモライト含有建材の製造方法を提供する。【解決手段】Ｃａ（ＯＨ）２及びＣａＯのうちの少なくとも一方を含むカルシウム化合物と、ＳｉＯ２と、Ｌｉ２ＳＯ４、Ｎａ２ＳＯ４、ＭｇＳＯ４、ＺｎＳＯ４及び（ＮＨ４）２ＳＯ４からなる群より選ばれる少なくとも一種の硫酸塩と、水と、を含み、カルシウム化合物とＳｉＯ２の合計モル数を０．１８ｍｏｌとしたときの硫酸塩のモル数が、硫酸塩がＬｉ２ＳＯ４の場合は０．５７〜１．４３ｍｍｏｌ、Ｎａ２ＳＯ４の場合は０．５７〜１．１５ｍｍｏｌ、ＭｇＳＯ４の場合は０．５７〜２．３０ｍｍｏｌ、ＺｎＳＯ４の場合は０．５７〜１．４３ｍｍｏｌ、（ＮＨ４）２ＳＯ４の場合は０．５７〜２．３０ｍｍｏｌの範囲内にある含水組成物を調製する工程と、含水組成物を１６０〜１８０℃の温度で水熱合成反応させる工程と、を有するトバモライト含有建材の製造方法。【選択図】図１
METHOD FOR PRODUCING TOBERMORITE-CONTAINING HOUSING MATERIAL, TOBERMORITE, AND TOBERMORITE-CONTAINING HOUSING MATERIAL
トバモライト含有建材の製造方法、トバモライト及びトバモライト含有建材
KOJIMA YOSHIYUKI (author)
2021-05-20
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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