Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
GEOPOLYMER LIGHTWEIGHT REFRACTORY MATERIAL
To provide a geopolymer lightweight refractory material which hardly causes a crack or irregular deformation when receiving heat.SOLUTION: A geopolymer lightweight refractory material is obtained by adding an alkaline solution to a blended material including an active filler, nonactive filler, lightweight refractory aggregate, and a foaming agent, and kneading and curing the mixture, the refractory material having density of 1.0 g/cm3 or less. The active filler is a mixture of a first active filler such as fly ash and a second active filler such as blast furnace slag fine powders, and a mass ratio of the second active filler is 10-20 mass%. The nonactive filler is not cured with the alkaline solution or, even if cured, provides compression strength of the cured body of 5 MPa or less, and maintains physical properties and chemical properties even if heated to 1000°C, and a mass ratio of the nonactive filler is 20-50 mass%. The lightweight refractory aggregate has a density of 1.65 g/cm3 or less, a ratio of a particle size of 5 mm or larger and a ratio of a particle size of smaller than 0.15 mm in the particle size distribution are respectively 0 mass% and 5 mass% or less, and a volume ratio of the lightweight refractory aggregate is 40-60 vol.% in the entire lightweight refractory material.SELECTED DRAWING: None
【課題】受熱した際にひび割れと不整変形を生じにくいジオポリマー系軽量耐火材料を提供する。【解決手段】活性フィラー、非活性フィラー、軽量耐火性骨材及び発泡剤を含む配合物に、アルカリ溶液を添加し混練し養生して得られ、密度が１．０ｇ／ｃｍ３以下であるジオポリマー系軽量耐火材料である。活性フィラーはフライアッシュ等の第１活性フィラーと、高炉スラグ微粉末等の第２活性フィラーとの混合物であり、当該第２活性フィラーの質量割合は１０～２０質量％である。非活性フィラーは、アルカリ溶液では硬化しないか、硬化しても硬化体の圧縮強度が５ＭＰａ以下で、かつ１０００℃の加熱をしても物理的性状及び化学的性状が維持されるものであり、当該非活性フィラーの質量割合は２０～５０質量％である。軽量耐火性骨材は、密度が１．６５ｇ／ｃｍ３以下、粒度分布において粒度５ｍｍ以上の割合が０質量％で、粒度０．１５ｍｍ未満の割合が５質量％以下であり、当該軽量耐火性骨材の体積割合は軽量耐火材料全体の４０～６０体積％である。【選択図】なし
GEOPOLYMER LIGHTWEIGHT REFRACTORY MATERIAL
To provide a geopolymer lightweight refractory material which hardly causes a crack or irregular deformation when receiving heat.SOLUTION: A geopolymer lightweight refractory material is obtained by adding an alkaline solution to a blended material including an active filler, nonactive filler, lightweight refractory aggregate, and a foaming agent, and kneading and curing the mixture, the refractory material having density of 1.0 g/cm3 or less. The active filler is a mixture of a first active filler such as fly ash and a second active filler such as blast furnace slag fine powders, and a mass ratio of the second active filler is 10-20 mass%. The nonactive filler is not cured with the alkaline solution or, even if cured, provides compression strength of the cured body of 5 MPa or less, and maintains physical properties and chemical properties even if heated to 1000°C, and a mass ratio of the nonactive filler is 20-50 mass%. The lightweight refractory aggregate has a density of 1.65 g/cm3 or less, a ratio of a particle size of 5 mm or larger and a ratio of a particle size of smaller than 0.15 mm in the particle size distribution are respectively 0 mass% and 5 mass% or less, and a volume ratio of the lightweight refractory aggregate is 40-60 vol.% in the entire lightweight refractory material.SELECTED DRAWING: None
【課題】受熱した際にひび割れと不整変形を生じにくいジオポリマー系軽量耐火材料を提供する。【解決手段】活性フィラー、非活性フィラー、軽量耐火性骨材及び発泡剤を含む配合物に、アルカリ溶液を添加し混練し養生して得られ、密度が１．０ｇ／ｃｍ３以下であるジオポリマー系軽量耐火材料である。活性フィラーはフライアッシュ等の第１活性フィラーと、高炉スラグ微粉末等の第２活性フィラーとの混合物であり、当該第２活性フィラーの質量割合は１０～２０質量％である。非活性フィラーは、アルカリ溶液では硬化しないか、硬化しても硬化体の圧縮強度が５ＭＰａ以下で、かつ１０００℃の加熱をしても物理的性状及び化学的性状が維持されるものであり、当該非活性フィラーの質量割合は２０～５０質量％である。軽量耐火性骨材は、密度が１．６５ｇ／ｃｍ３以下、粒度分布において粒度５ｍｍ以上の割合が０質量％で、粒度０．１５ｍｍ未満の割合が５質量％以下であり、当該軽量耐火性骨材の体積割合は軽量耐火材料全体の４０～６０体積％である。【選択図】なし
GEOPOLYMER LIGHTWEIGHT REFRACTORY MATERIAL
ジオポリマー系軽量耐火材料
LI ZHUGUO (Autor:in) / INOUE TAKUYA (Autor:in) / SHINAGAWA HAJIME (Autor:in) / FUJI MASAFUMI (Autor:in)
12.08.2022
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
Highly refractory fiber reinforced mullite lightweight refractory material
| Europäisches Patentamt | 2016
Lightweight high-ductility geopolymer material and preparation method thereof
| Europäisches Patentamt | 2021
Strength Characteristics of Lightweight Geopolymer
| Springer Verlag | 2020
Lightweight geopolymer-based hybrid materials
| British Library Online Contents | 2017