A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a technology easy in practical application of a pray material and a spray method, which have sufficient usable life of mortar (concrete) and excellent short period strength development even in a spray method that uses a liquid rapid hardening agent having low short term strength development.SOLUTION: A spray material obtained by combining the following component (A) and component (B). (A) mortar including: (a1) cement; (a2) alkali metal sulfate; and (a3) one obtained by including 0.1 part by mass or more in terms of the solid of a water reducing agent containing a polycarboxylic acid system high molecule compound having a weight average molecular weight (Mw) in terms of polyethylene oxide measured by gel permeation chromatography of 10,000 to 50,000, and a Z average molecular weight (Mz) of smaller than 100,000 relative to 100 parts by mass of cement, and the (B) being a liquid rapid hardening agent having aluminum sulfate as an effective component.SELECTED DRAWING: None
【課題】短期強度の発現性が低い液体急結剤を用いる吹付け工法において、モルタル（コンクリート）が十分な可使時間を有し、かつ良好な短期強度発現性を有する吹付け材料及び吹付け工法を実用に供しやすい技術の提供。【解決手段】次の成分（Ａ）と成分（Ｂ）とを組み合わせてなる吹付け材料。（Ａ）（ａ１）セメントと、（ａ２）アルカリ金属硫酸塩と、（ａ３）ゲルパーミエーションクロマトグラフィーによって測定されるポリエチレンオキサイド換算分子量における重量平均分子量（Ｍｗ）が１０，０００〜５０，０００、Ｚ平均分子量（Ｍｚ）が１００，０００未満であるポリカルボン酸系高分子化合物を含む減水剤をセメント１００質量部に対し固形分換算で０．１質量部以上とを含有するモルタル（Ｂ）硫酸アルミニウムを有効成分とする液体急結剤【選択図】なし
PROBLEM TO BE SOLVED: To provide a technology easy in practical application of a pray material and a spray method, which have sufficient usable life of mortar (concrete) and excellent short period strength development even in a spray method that uses a liquid rapid hardening agent having low short term strength development.SOLUTION: A spray material obtained by combining the following component (A) and component (B). (A) mortar including: (a1) cement; (a2) alkali metal sulfate; and (a3) one obtained by including 0.1 part by mass or more in terms of the solid of a water reducing agent containing a polycarboxylic acid system high molecule compound having a weight average molecular weight (Mw) in terms of polyethylene oxide measured by gel permeation chromatography of 10,000 to 50,000, and a Z average molecular weight (Mz) of smaller than 100,000 relative to 100 parts by mass of cement, and the (B) being a liquid rapid hardening agent having aluminum sulfate as an effective component.SELECTED DRAWING: None
【課題】短期強度の発現性が低い液体急結剤を用いる吹付け工法において、モルタル（コンクリート）が十分な可使時間を有し、かつ良好な短期強度発現性を有する吹付け材料及び吹付け工法を実用に供しやすい技術の提供。【解決手段】次の成分（Ａ）と成分（Ｂ）とを組み合わせてなる吹付け材料。（Ａ）（ａ１）セメントと、（ａ２）アルカリ金属硫酸塩と、（ａ３）ゲルパーミエーションクロマトグラフィーによって測定されるポリエチレンオキサイド換算分子量における重量平均分子量（Ｍｗ）が１０，０００〜５０，０００、Ｚ平均分子量（Ｍｚ）が１００，０００未満であるポリカルボン酸系高分子化合物を含む減水剤をセメント１００質量部に対し固形分換算で０．１質量部以上とを含有するモルタル（Ｂ）硫酸アルミニウムを有効成分とする液体急結剤【選択図】なし
SPRAY MATERIAL AND WET SPRAY METHOD
吹付け材料及び湿式吹付け工法
TAKAHASHI HIROO (author)
2018-06-07
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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