A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LIGHTWEIGHT GYPSUM BOARD
PROBLEM TO BE SOLVED: To provide a lightweight gypsum board that significantly reduces dust generation during processing.SOLUTION: A lightweight gypsum board includes a cured gypsum core arranged between two cover sheets. The cured gypsum core containing a gypsum crystal matrix has a pore size distribution consisting of (i) a void having a pore size with a diameter of less than 50 μm, (ii) a void having a pore size with a diameter of 50-100 μm, and (iii) a void having a pore size with a diameter of over 100 μm, occupying at least 20% of the total void volume of the cured gypsum when measuring the voids using a scanning electron micrograph image. A maximum frequency void has a diameter of 100 μm or less. The gypsum crystal matrix is formed so that the cured gypsum core has an average core hardness of at least about 5 kg as measured according to ASTMC-473. The board has a density of about 560 kg/mor less.SELECTED DRAWING: Figure 1
【課題】加工中ダストの発生が顕著に減少する軽量な石膏ボードの提供。【解決手段】２つのカバーシートの間に配置される硬化石膏芯を含有する軽量石膏ボードであって、石膏結晶マトリックスを含有する前記硬化石膏芯は、（ｉ）５０μｍ未満の直径の細孔サイズを有する空隙、（ｉｉ）５０〜１００μｍの直径の細孔サイズを有する空隙、及び、（ｉｉｉ）走査電子顕微鏡写真像を用いて空隙を計測して前記硬化石膏芯の全空隙体積の少なくとも２０％を占める１００μｍを超える直径の細孔サイズを有する空隙から構成される細孔サイズ分布を有し、最大頻度の空隙は１００ミクロン以下の直径を有し、前記石膏結晶マトリックスは、前記硬化石膏芯が、ＡＳＴＭＣ−４７３に準拠して測定して、少なくとも約５ｋｇの平均の芯の固さを有するように形成され、且つ、前記ボードは約５６０ｋｇ／ｍ３以下の密度を有する軽量石膏ボード。【選択図】図１
LIGHTWEIGHT GYPSUM BOARD
PROBLEM TO BE SOLVED: To provide a lightweight gypsum board that significantly reduces dust generation during processing.SOLUTION: A lightweight gypsum board includes a cured gypsum core arranged between two cover sheets. The cured gypsum core containing a gypsum crystal matrix has a pore size distribution consisting of (i) a void having a pore size with a diameter of less than 50 μm, (ii) a void having a pore size with a diameter of 50-100 μm, and (iii) a void having a pore size with a diameter of over 100 μm, occupying at least 20% of the total void volume of the cured gypsum when measuring the voids using a scanning electron micrograph image. A maximum frequency void has a diameter of 100 μm or less. The gypsum crystal matrix is formed so that the cured gypsum core has an average core hardness of at least about 5 kg as measured according to ASTMC-473. The board has a density of about 560 kg/mor less.SELECTED DRAWING: Figure 1
【課題】加工中ダストの発生が顕著に減少する軽量な石膏ボードの提供。【解決手段】２つのカバーシートの間に配置される硬化石膏芯を含有する軽量石膏ボードであって、石膏結晶マトリックスを含有する前記硬化石膏芯は、（ｉ）５０μｍ未満の直径の細孔サイズを有する空隙、（ｉｉ）５０〜１００μｍの直径の細孔サイズを有する空隙、及び、（ｉｉｉ）走査電子顕微鏡写真像を用いて空隙を計測して前記硬化石膏芯の全空隙体積の少なくとも２０％を占める１００μｍを超える直径の細孔サイズを有する空隙から構成される細孔サイズ分布を有し、最大頻度の空隙は１００ミクロン以下の直径を有し、前記石膏結晶マトリックスは、前記硬化石膏芯が、ＡＳＴＭＣ−４７３に準拠して測定して、少なくとも約５ｋｇの平均の芯の固さを有するように形成され、且つ、前記ボードは約５６０ｋｇ／ｍ３以下の密度を有する軽量石膏ボード。【選択図】図１
LIGHTWEIGHT GYPSUM BOARD
軽量な石膏ボード
YU QIANG (author) / SONG WEIXIN DAVID (author)
2016-10-06
Patent
Electronic Resource
Japanese
IPC:
C04B
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