A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FOAMING QUICK-SETTING AGENT AND SPRAYING METHOD
To provide a foaming quick-setting agent that enables improvement of workability by suppressing the generation of dust generated during spraying work in tunnels or the like, is capable of providing high quick setting even under conditions where there is spring water or where the ground surface has deteriorated, and can be applied to places where long-term strength development is required.SOLUTION: A foaming quick-setting agent of the type used by mixing a powder admixture with a liquid quick-setting agent is provided in which the powder admixture contains (a) a calcium aluminate powder having a SiO2 content of 7 mass% or less, a vitrification ratio of 30-98 mass%, and a sulfur content of 0.007-0.5%, and (b) an alkali carbonate powder; the calcium aluminate powder is contained in the amount of at least 20 pts.mass relative to 100 pts.mass of the powder admixture; the alkali carbonate powder is contained in the amount of 0.1 pts.mass or more relative to 100 pts.mass of the powder admixture; and liquid quick-setting agent contains aluminum sulfate having a pH of 1 to 5 in the amount of 20 pts.mass or more relative to 100 pts.mass of the liquid quick-setting agent.SELECTED DRAWING: None
【課題】トンネル等の吹付け作業で発生する粉塵の発生を抑えて作業性を向上させることが可能で、湧水や地山面が悪化した状況下においても高い急結性が得られ、長期的な強度発現性を求められる箇所への適用が可能な発泡型急結剤を提供する。【解決手段】粉体混和材と、液体急結剤とを混合して使用する発泡型急結剤であって、前記粉体混和材が、ＳｉＯ２含有量が７質量％以下であり、ガラス化率が３０～９８質量％であり、硫黄含有量が０．００７～０．５％であるカルシウムアルミネート粉末と炭酸アルカリ粉末とを含み、前記カルシウムアルミネート粉末を前記粉体混和材１００質量部中２０質量部以上含有し、前記炭酸アルカリを前記粉体混和材１００質量部中０．１質量部以上含有し、前記液体急結剤が、ｐＨ１～５を呈する硫酸アルミニウムを前記液体急結剤１００質量部中２０質量部以上含有する発泡型急結剤である。【選択図】なし
FOAMING QUICK-SETTING AGENT AND SPRAYING METHOD
To provide a foaming quick-setting agent that enables improvement of workability by suppressing the generation of dust generated during spraying work in tunnels or the like, is capable of providing high quick setting even under conditions where there is spring water or where the ground surface has deteriorated, and can be applied to places where long-term strength development is required.SOLUTION: A foaming quick-setting agent of the type used by mixing a powder admixture with a liquid quick-setting agent is provided in which the powder admixture contains (a) a calcium aluminate powder having a SiO2 content of 7 mass% or less, a vitrification ratio of 30-98 mass%, and a sulfur content of 0.007-0.5%, and (b) an alkali carbonate powder; the calcium aluminate powder is contained in the amount of at least 20 pts.mass relative to 100 pts.mass of the powder admixture; the alkali carbonate powder is contained in the amount of 0.1 pts.mass or more relative to 100 pts.mass of the powder admixture; and liquid quick-setting agent contains aluminum sulfate having a pH of 1 to 5 in the amount of 20 pts.mass or more relative to 100 pts.mass of the liquid quick-setting agent.SELECTED DRAWING: None
【課題】トンネル等の吹付け作業で発生する粉塵の発生を抑えて作業性を向上させることが可能で、湧水や地山面が悪化した状況下においても高い急結性が得られ、長期的な強度発現性を求められる箇所への適用が可能な発泡型急結剤を提供する。【解決手段】粉体混和材と、液体急結剤とを混合して使用する発泡型急結剤であって、前記粉体混和材が、ＳｉＯ２含有量が７質量％以下であり、ガラス化率が３０～９８質量％であり、硫黄含有量が０．００７～０．５％であるカルシウムアルミネート粉末と炭酸アルカリ粉末とを含み、前記カルシウムアルミネート粉末を前記粉体混和材１００質量部中２０質量部以上含有し、前記炭酸アルカリを前記粉体混和材１００質量部中０．１質量部以上含有し、前記液体急結剤が、ｐＨ１～５を呈する硫酸アルミニウムを前記液体急結剤１００質量部中２０質量部以上含有する発泡型急結剤である。【選択図】なし
FOAMING QUICK-SETTING AGENT AND SPRAYING METHOD
発泡型急結剤及び吹付工法
MUROKAWA TAKAMITSU (author) / IWASAKI MASAHIRO (author) / MISHIMA SHUNICHI (author)
2022-10-27
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
E21D
SHAFTS
,
Schächte
CALCIUM ALUMINATE FOR QUICK SETTING AGENT, AND FOAMING TYPE QUICK SETTING AGENT
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