A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING CEMENT-CONTAINING HYDROPHOBIC MATERIAL
To solve the problem that it is difficult to control drying shrinkage cracking when kneading into a building structure because, even after combustion removal of an organic matter and removal of hydration water retained by CSH through thermal treatment of a particulate matter of a cement-containing material, it absorbs moisture in the air again.SOLUTION: The present invention has found that thermal treatment at a temperature of 900°C or higher while supplying a support combustible gas to a particulate matter of a cement-containing material mixed with an organic matter not only can remove the organic matter by combustion but also can reduce surface hydrophilicity and reduce moisture absorption. Accordingly, a unit water content of concrete can be reduced, and cracks associated with drying shrinkage can be suppressed. Furthermore, the present invention can be used in applications requiring low moisture absorption, such as a filler for a plastic molded product or an insulating powder used in an electrical/electronic component.SELECTED DRAWING: Figure 1
【課題】セメント含有材料の粉粒体の熱処理によって有機物を燃焼除去し、ＣＳＨが保持する水和水を除去しても再び空気中の湿気を吸収するため、建築構造物中に混練しても乾燥収縮ひび割れを抑制することが困難である。【解決手段】本発明では、有機物が混合されたセメント含有材料の粉粒体に支燃性ガスを供給しながら９００℃以上の温度で熱処理することで、有機物を燃焼除去できるだけでなく、表面親水性の低下と吸湿量の低減が可能となることを見出した。これにより、コンクリートの単位水量を低減でき、乾燥収縮に伴うひび割れを抑制できる。また、この他にも本発明は、例えばプラスチック成形品のフィラーや電気・電子部品に用いられる絶縁粉末といった低吸湿性が要求される用途で利用できる。【選択図】図１
METHOD FOR PRODUCING CEMENT-CONTAINING HYDROPHOBIC MATERIAL
To solve the problem that it is difficult to control drying shrinkage cracking when kneading into a building structure because, even after combustion removal of an organic matter and removal of hydration water retained by CSH through thermal treatment of a particulate matter of a cement-containing material, it absorbs moisture in the air again.SOLUTION: The present invention has found that thermal treatment at a temperature of 900°C or higher while supplying a support combustible gas to a particulate matter of a cement-containing material mixed with an organic matter not only can remove the organic matter by combustion but also can reduce surface hydrophilicity and reduce moisture absorption. Accordingly, a unit water content of concrete can be reduced, and cracks associated with drying shrinkage can be suppressed. Furthermore, the present invention can be used in applications requiring low moisture absorption, such as a filler for a plastic molded product or an insulating powder used in an electrical/electronic component.SELECTED DRAWING: Figure 1
【課題】セメント含有材料の粉粒体の熱処理によって有機物を燃焼除去し、ＣＳＨが保持する水和水を除去しても再び空気中の湿気を吸収するため、建築構造物中に混練しても乾燥収縮ひび割れを抑制することが困難である。【解決手段】本発明では、有機物が混合されたセメント含有材料の粉粒体に支燃性ガスを供給しながら９００℃以上の温度で熱処理することで、有機物を燃焼除去できるだけでなく、表面親水性の低下と吸湿量の低減が可能となることを見出した。これにより、コンクリートの単位水量を低減でき、乾燥収縮に伴うひび割れを抑制できる。また、この他にも本発明は、例えばプラスチック成形品のフィラーや電気・電子部品に用いられる絶縁粉末といった低吸湿性が要求される用途で利用できる。【選択図】図１
METHOD FOR PRODUCING CEMENT-CONTAINING HYDROPHOBIC MATERIAL
セメント含有疎水性材料の製造方法
ONDA KOKI (author) / KUROSAKI HIROSHI (author) / SUGIYAMA DAISUKE (author) / SATO KAZUNORI (author)
2023-11-24
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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