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A platform for research: civil engineering, architecture and urbanism
QUICK SETTING ADDITIVE FOR SPRAY CONCRETE
PROBLEM TO BE SOLVED: To provide a quick setting additive for spray concrete having properties capable of inhibiting flash setting such as a hindrance with regard to building, adding excellent adhesiveness during spray and forming a concrete sprayed article which is strong after adhesion and has temporal durability.SOLUTION: There is provided a quick setting additive for spray concrete containing powder of clinker of calcium aluminate having a content molar ratio of CaO and AlO(CaO/AlO) of 1.8 to 2.5 with a vitrification percentage of 90% or more containing 35 to 85 pts.mass of (A) clinker containing silicon, magnesium and titanium of SiO; 3.0 to 8.0 mass%, MgO; 0.5 to 0.9 mass% and TiO; 1.0 to 2.5 mass% in terms of oxide, and 65 to 15 pts.mass of (B) clinker containing silicon, magnesium and titanium of SiO; 3.0 to 8.0 mass%, MgO; 1.0 to 1.5 mass% and TiO; 0.1 to 0.9 mass% in terms of oxide as an active component.SELECTED DRAWING: None
【課題】 施工に関して支障をきたすほどの瞬結化を抑制でき、一方で、吹付の際に優れた付着性を付与でき、しかも付着後は強固で経時的耐久性のあるコンクリート吹付物を形成できるという特性を具備した吹付コンクリート用の急結性混和剤を提供する。【解決手段】 何れもガラス化率９０％以上でＣａＯとＡｌ2Ｏ3の含有モル比（ＣａＯ／Ａｌ2Ｏ3）が１．８〜２．５のカルシウムアルミネートのクリンカであって、（Ａ）珪素、マグネシウム及びチタンを酸化物換算で、ＳｉＯ2；３．０〜８．０質量％、ＭｇＯ；０．５〜０．９質量％及びＴｉＯ2；１．０〜２．５質量％含有するクリンカ３５〜８５質量部と（Ｂ）珪素、マグネシウム及びチタンを酸化物換算で、ＳｉＯ2；３．０〜８．０質量％、ＭｇＯ；１．０〜１．５質量％及びＴｉＯ2；０．１〜０．９質量％含有するクリンカ６５〜１５質量部からなるカルシウムアルミネートクリンカの粉末を有効成分とする吹付コンクリート用急結性混和剤。【選択図】 なし
QUICK SETTING ADDITIVE FOR SPRAY CONCRETE
PROBLEM TO BE SOLVED: To provide a quick setting additive for spray concrete having properties capable of inhibiting flash setting such as a hindrance with regard to building, adding excellent adhesiveness during spray and forming a concrete sprayed article which is strong after adhesion and has temporal durability.SOLUTION: There is provided a quick setting additive for spray concrete containing powder of clinker of calcium aluminate having a content molar ratio of CaO and AlO(CaO/AlO) of 1.8 to 2.5 with a vitrification percentage of 90% or more containing 35 to 85 pts.mass of (A) clinker containing silicon, magnesium and titanium of SiO; 3.0 to 8.0 mass%, MgO; 0.5 to 0.9 mass% and TiO; 1.0 to 2.5 mass% in terms of oxide, and 65 to 15 pts.mass of (B) clinker containing silicon, magnesium and titanium of SiO; 3.0 to 8.0 mass%, MgO; 1.0 to 1.5 mass% and TiO; 0.1 to 0.9 mass% in terms of oxide as an active component.SELECTED DRAWING: None
【課題】 施工に関して支障をきたすほどの瞬結化を抑制でき、一方で、吹付の際に優れた付着性を付与でき、しかも付着後は強固で経時的耐久性のあるコンクリート吹付物を形成できるという特性を具備した吹付コンクリート用の急結性混和剤を提供する。【解決手段】 何れもガラス化率９０％以上でＣａＯとＡｌ2Ｏ3の含有モル比（ＣａＯ／Ａｌ2Ｏ3）が１．８〜２．５のカルシウムアルミネートのクリンカであって、（Ａ）珪素、マグネシウム及びチタンを酸化物換算で、ＳｉＯ2；３．０〜８．０質量％、ＭｇＯ；０．５〜０．９質量％及びＴｉＯ2；１．０〜２．５質量％含有するクリンカ３５〜８５質量部と（Ｂ）珪素、マグネシウム及びチタンを酸化物換算で、ＳｉＯ2；３．０〜８．０質量％、ＭｇＯ；１．０〜１．５質量％及びＴｉＯ2；０．１〜０．９質量％含有するクリンカ６５〜１５質量部からなるカルシウムアルミネートクリンカの粉末を有効成分とする吹付コンクリート用急結性混和剤。【選択図】 なし
QUICK SETTING ADDITIVE FOR SPRAY CONCRETE
吹付コンクリート用急結性混和剤
HANEI YOSHIHISA (author)
2016-07-11
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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