JP7449701B2 - Geopolymer-like cured body - Google Patents
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- JP7449701B2 JP7449701B2 JP2020009761A JP2020009761A JP7449701B2 JP 7449701 B2 JP7449701 B2 JP 7449701B2 JP 2020009761 A JP2020009761 A JP 2020009761A JP 2020009761 A JP2020009761 A JP 2020009761A JP 7449701 B2 JP7449701 B2 JP 7449701B2
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- 239000011490 mineral wool Substances 0.000 claims description 72
- 239000003513 alkali Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 12
- 239000012784 inorganic fiber Substances 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 150000008044 alkali metal hydroxides Chemical group 0.000 claims description 4
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims 1
- 239000012779 reinforcing material Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 43
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000002994 raw material Substances 0.000 description 14
- 238000000576 coating method Methods 0.000 description 13
- 238000001723 curing Methods 0.000 description 12
- 238000001035 drying Methods 0.000 description 12
- 229920000876 geopolymer Polymers 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 11
- 239000002893 slag Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 239000000835 fiber Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 230000009970 fire resistant effect Effects 0.000 description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 8
- 239000010883 coal ash Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 6
- 238000011049 filling Methods 0.000 description 6
- 235000019353 potassium silicate Nutrition 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000010451 perlite Substances 0.000 description 4
- 235000019362 perlite Nutrition 0.000 description 4
- 239000000021 stimulant Substances 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 3
- 150000008041 alkali metal carbonates Chemical class 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- -1 fireproof coatings Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002557 mineral fiber Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
本発明は、新たなジオポリマー様硬化体及びその製造法に関する。 The present invention relates to a new geopolymer-like cured body and a method for producing the same.
ジオポリマーは、石炭灰や高炉スラグなどのケイ酸（ＳｉＯ２）や酸化アルミニウム（Ａｌ２Ｏ３）を含む活性フィラーとケイ酸ナトリウムや水酸化ナトリウムなどを用いたアルカリ溶液との反応によって得られる非晶質の縮合体であり、強度発現が早く、重金属を固定でき、耐火性及び耐硫酸塩抵抗性が高いなどの特徴を有する。このような特性を有することから、ジオポリマーは、セメントを使用しないコンクリートとしての期待が高まっている。 Geopolymers are obtained by reacting active fillers containing silicic acid (SiO 2 ) and aluminum oxide (Al 2 O 3 ), such as coal ash and blast furnace slag, with an alkaline solution using sodium silicate, sodium hydroxide, etc. It is an amorphous condensate with characteristics such as quick strength development, ability to fix heavy metals, and high fire resistance and sulfate resistance. Because of these characteristics, geopolymers are increasingly expected to be used as cement-free concrete.
一方、ジオポリマーを軽量化して断熱材料として利用しようとする研究も行われており、ジオポリマー製造時に発泡剤を添加して多孔質ジオポリマーを製造する技術（特許文献１）が報告されている。 On the other hand, research is also being conducted to reduce the weight of geopolymers and use them as heat insulating materials, and a technology has been reported to produce porous geopolymers by adding a foaming agent during the production of geopolymers (Patent Document 1). .
しかしながら、ジオポリマーは、養生中の乾燥収縮による表面のひび割れが発生し問題となることが多い。このひび割れを抑制するためにカーボン繊維やポリビニルアルコール繊維等を混入するなどの研究が進められているが、有機繊維を配合することにより耐火性が低下する、コストが高くなるという問題が生じている。
従って、本発明の課題は、軽量で断熱材、耐火被覆材、耐冷被覆材、耐火接着剤、隙間充填材などへの利用が可能な新たなジオポリマー様硬化体及びその製造法を提供することにある。
However, geopolymers often suffer from surface cracks due to drying shrinkage during curing. Research is underway to incorporate carbon fibers, polyvinyl alcohol fibers, etc. in order to suppress this cracking, but there are problems in that the combination of organic fibers reduces fire resistance and increases costs. .
Therefore, an object of the present invention is to provide a new geopolymer-like cured product that is lightweight and can be used for heat insulating materials, fire-resistant coatings, cold-resistant coatings, fire-resistant adhesives, gap filling materials, etc., and a method for producing the same. It is in.
そこで本発明者は、人造鉱物繊維であり、安全性も確立しているロックウールに着目し、ロックウール及び／又は粉砕ロックウールを主活性フィラーとして採用し、アルカリ刺激剤と反応させることにより、乾燥収縮、加熱、冷却によるひび割れもなく、かさ密度が小さく、圧縮強度も良好なジオポリマー様硬化体が容易に得られることを見出し、本発明を完成した。 Therefore, the present inventor focused on rock wool, which is an artificial mineral fiber and has established safety, and by employing rock wool and/or crushed rock wool as the main active filler and reacting it with an alkaline stimulant, The present invention was completed based on the discovery that a geopolymer-like cured product with no drying shrinkage, no cracking due to heating or cooling, low bulk density, and good compressive strength can be easily obtained.
すなわち、本発明は、次の発明［１］～［１０］を提供するものでる。
［１］ロックウール及び／又は粉砕ロックウールを活性フィラーとするジオポリマー様硬化体。
［２］主成分が、（Ａ）ロックウール及び／又は粉砕ロックウールと（Ｂ）アルカリ刺激剤の反応物である［１］記載のジオポリマー様硬化体。
［３］アルカリ刺激剤が、アルカリ金属水酸化物、アルカリ金属炭酸塩及びアルカリ金属ケイ酸塩から選ばれる成分である［１］又は［２］記載のジオポリマー様硬化体。
［４］（Ａ）ロックウール及び／又は粉砕ロックウールと（Ｂ）アルカリ刺激剤との質量比（Ａ/Ｂ）が１．０～２０．０である［２］又は［３］記載のジオポリマー様硬化体。
［５］さらに混和剤を含有する［１］～［４］のいずれかに記載のジオポリマー様硬化体。
［６］混和剤が、軽量骨材、ロックウール以外の無機繊維、加熱膨張材、起泡剤、流動化剤、吸熱材及び増粘剤から選ばれる１種又は２種以上である［５］記載のジオポリマー様硬化体。
［７］かさ密度が０．７０～１．７０ｇ／ｃｍ３である［１］～［６］のいずれかに記載のジオポリマー様硬化体。
［８］圧縮強度が０．５０Ｎ／ｍｍ２以上である［１］～［７］のいずれかに記載のジオポリマー様硬化体。
［９］ロックウール及び／又は粉砕ロックウールとアルカリ刺激剤とを混合後養生することを特徴とするジオポリマー様硬化体の製造法。
［１０］［１］～［８］のいずれかに記載のジオポリマー様硬化体からなる断熱材。
That is, the present invention provides the following inventions [1] to [10].
[1] Geopolymer-like cured product containing rock wool and/or crushed rock wool as an active filler.
[2] The geopolymer-like cured product according to [1], wherein the main component is a reaction product of (A) rock wool and/or ground rock wool and (B) an alkali stimulant.
[3] The geopolymer-like cured product according to [1] or [2], wherein the alkali stimulant is a component selected from alkali metal hydroxides, alkali metal carbonates, and alkali metal silicates.
[4] The geothermal according to [2] or [3], wherein the mass ratio (A/B) of (A) rock wool and/or crushed rock wool and (B) the alkaline stimulant is 1.0 to 20.0. Polymer-like hardened body.
[5] The geopolymer-like cured product according to any one of [1] to [4], further containing an admixture.
[6] The admixture is one or more selected from lightweight aggregates, inorganic fibers other than rock wool, thermal expansion materials, foaming agents, fluidizing agents, endothermic materials, and thickeners [5] The geopolymer-like cured product described above.
[7] The geopolymer-like cured product according to any one of [1] to [6], which has a bulk density of 0.70 to 1.70 g/cm 3 .
[8] The geopolymer-like cured product according to any one of [1] to [7], which has a compressive strength of 0.50 N/mm 2 or more.
[9] A method for producing a geopolymer-like cured product, which comprises mixing rock wool and/or pulverized rock wool with an alkaline stimulant and then curing the mixture.
[10] A heat insulating material comprising the geopolymer-like cured product according to any one of [1] to [8].
本発明のジオポリマー様硬化体は、かさ密度が低く、良好な圧縮強度を有し、乾燥収縮、加熱、冷却によるひび割れも生じないため、断熱材、耐火被覆材、耐冷被覆材として有用である。また、モールド成形や吹付け成形など成形方法により、かさ密度や圧縮強度を調整可能であることから、幅広い形態の断熱材、耐火被覆材、耐冷被覆材、耐火接着剤、隙間充填材などとして有用である。更に、ロックウールは、安全性も確立しており、安価であるから、本発明のジオポリマー様硬化体も安全で、安価に製造できる。 The geopolymer-like cured product of the present invention has a low bulk density, good compressive strength, and does not cause cracking due to drying shrinkage, heating, or cooling, so it is useful as a heat insulating material, a fire-resistant coating material, and a cold-resistant coating material. . In addition, the bulk density and compressive strength can be adjusted by molding, spray molding, and other forming methods, making it useful as a wide variety of insulation materials, fire-resistant coatings, cold-resistant coatings, fire-resistant adhesives, gap fillers, etc. It is. Furthermore, since rock wool has established safety and is inexpensive, the geopolymer-like cured product of the present invention is also safe and can be produced at low cost.
本発明のジオポリマー様硬化体は、ロックウール及び／又は粉砕ロックウールを活性フィラーとするものである。
活性フィラーとは、ジオポリマーの原料主成分であり、通常は、石炭灰や高炉スラグなどのケイ酸（ＳｉＯ２）や酸化アルミニウム（Ａｌ２Ｏ３）を含む原料が用いられる。本発明では、これらの石炭灰や高炉スラグに代えてロックウール及び／又は粉砕ロックウールが活性フィラーとして用いられる。
The geopolymer-like cured product of the present invention uses rock wool and/or crushed rock wool as an active filler.
The active filler is the main raw material component of the geopolymer, and usually raw materials containing silicic acid (SiO 2 ) and aluminum oxide (Al 2 O 3 ), such as coal ash and blast furnace slag, are used. In the present invention, rock wool and/or pulverized rock wool is used as an active filler instead of these coal ash and blast furnace slag.
ロックウールは、玄武岩、鉄鋼スラグなどに石灰などを混合し、高温で溶解して製造される人造鉱物繊維であり、主成分はケイ酸（ＳｉＯ２）と酸化カルシウム（ＣａＯ）である。ロックウールは、繊維状をしており、耐火性に優れることから、断熱材、耐火被覆材、培地、吸音材などとして使用されている。 Rock wool is an artificial mineral fiber produced by mixing basalt, steel slag, etc. with lime, etc. and melting the mixture at high temperatures, and its main components are silicic acid (SiO 2 ) and calcium oxide (CaO). Rock wool is fibrous and has excellent fire resistance, so it is used as insulation materials, fireproof coatings, culture media, sound absorbing materials, etc.
また、ロックウールを用いた成形体としては、ロックウール製品製造時に発生するショット、木片、アルカリ刺激剤を加えて、ホットプレス成形した成形体（特許文献２）、無機質繊維の集綿に酸性水溶液を付着処理後、圧縮脱水して乾燥させ、無機質繊維の溶出成分を無機質繊維の交点に集めて硬化させた成形体（特許文献３）、ロックウールなどのファイバーとエアロゲルと充填剤と無機バインダーとを複合させた複合材料（特許文献４）などが報告されているが、いずれもロックウールとアルカリ刺激剤とで形成されるジオポリマーではなく、木材片などを使用するため耐火性に劣る、比較的かさ密度が高く断熱性能が十分でないなどの問題があった。 In addition, molded bodies using rock wool include hot press molded bodies by adding shot, wood chips, and alkaline stimulants generated during the production of rock wool products (Patent Document 2), and molded bodies made of inorganic fibers mixed with an acidic aqueous solution. After adhesion treatment, the molded product is compressed and dehydrated and dried, and the eluted components of the inorganic fibers are collected at the intersections of the inorganic fibers and cured (Patent Document 3), a molded product made of fibers such as rock wool, airgel, filler, and inorganic binder. Composite materials (Patent Document 4) have been reported, but since they use wood chips instead of geopolymers made of rock wool and an alkaline stimulant, they have inferior fire resistance. There were problems such as high bulk density and insufficient insulation performance.
ロックウールは、通常、単繊維径３μｍ～１０μｍであり、平均繊維長は１００μｍ～１５０００μｍである。ロックウールの品質は、ロックウール工業会により管理されている。
粉砕ロックウールは、ロックウールを物理的に粉砕したものであり、単繊維径はロックウールと同様３μｍ～１０μｍであり、平均繊維長は２０μｍ～１０００μｍである。
Rock wool usually has a single fiber diameter of 3 μm to 10 μm and an average fiber length of 100 μm to 15,000 μm. The quality of rock wool is controlled by the Rock Wool Industry Association.
Pulverized rock wool is physically crushed rock wool, and has a single fiber diameter of 3 μm to 10 μm, similar to rock wool, and an average fiber length of 20 μm to 1000 μm.
本発明のジオポリマー様硬化体の主成分は、活性フィラーである（Ａ）ロックウール及び／又は粉砕ロックウールと、（Ｂ）アルカリ刺激剤との反応物である。すなわち、ジオポリマーと同じように、活性フィラーとしてのロックウール及び／又は粉砕ロックウールと、アルカリ刺激剤とが反応し、ジオポリマー様構造を形成しているものと考えられる。
ロックウールとしては、玄武岩、鉄鋼スラグなどを主原料としたものが挙げられるが、鉄鋼スラグを主原料としたものがより好ましい。
アルカリ刺激剤としては、アルカリ金属水酸化物、アルカリ金属炭酸塩及びアルカリ金属ケイ酸塩から選ばれる成分が挙げられる。アルカリ金属水酸化物としては、水酸化ナトリウム、水酸化カリウム、水酸化リチウムなどが挙げられるが、水酸化ナトリウムがより好ましい。アルカリ金属炭酸塩としては、炭酸ナトリウム、炭酸水素ナトリウム、炭酸カリウムなどが挙げられるが、炭酸ナトリウムがより好ましい。アルカリ金属ケイ酸塩としては、ケイ酸ナトリウム、ケイ酸カリウム、ケイ酸リチウムなどが挙げられるが、ケイ酸ナトリウムがより好ましく、水ガラスとして用いるのがさらに好ましい。
これらのアルカリ刺激剤は、単独で使用することもできるが、アルカリ濃度や成分を考慮した上で、併用して使用することもできる。
The main component of the geopolymer-like cured product of the present invention is a reaction product of (A) rock wool and/or ground rock wool, which is an active filler, and (B) an alkaline stimulant. That is, it is thought that, like the geopolymer, rock wool and/or ground rock wool as an active filler reacts with the alkaline stimulant to form a geopolymer-like structure.
Examples of rock wool include those whose main raw materials are basalt, steel slag, etc., but those whose main raw materials are steel slag are more preferable.
Alkali stimulants include components selected from alkali metal hydroxides, alkali metal carbonates, and alkali metal silicates. Examples of the alkali metal hydroxide include sodium hydroxide, potassium hydroxide, lithium hydroxide, and more preferably sodium hydroxide. Examples of the alkali metal carbonate include sodium carbonate, sodium hydrogencarbonate, potassium carbonate, and the like, with sodium carbonate being more preferred. Examples of the alkali metal silicate include sodium silicate, potassium silicate, lithium silicate, etc., but sodium silicate is more preferable, and it is even more preferable to use it as water glass.
Although these alkaline stimulants can be used alone, they can also be used in combination after considering the alkali concentration and ingredients.
本発明のジオポリマー様硬化体の（Ａ）ロックウール及び／又は粉砕ロックウールと（Ｂ）アルカリ刺激剤との質量比（Ａ/Ｂ）は、硬化体のかさ密度、圧縮強度のバランスによって種々変更することができるが、１．０～２０．０であるのが好ましく、１．２～１５．０がより好ましく、１．５～１３．０がさらに好ましく、１．６～７．０がよりさらに好ましい。 The mass ratio (A/B) of (A) rock wool and/or crushed rock wool and (B) alkali stimulant in the geopolymer-like cured product of the present invention varies depending on the balance of bulk density and compressive strength of the cured product. Although it can be changed, it is preferably 1.0 to 20.0, more preferably 1.2 to 15.0, even more preferably 1.5 to 13.0, and even more preferably 1.6 to 7.0. Even more preferred.
また、本発明のジオポリマー様硬化体には、断熱材、耐火被覆材、耐冷被覆材、耐火接着剤、隙間充填材などとしての応用性を考慮すれば、種々の混和剤を含有させることができる。
そのような混和剤としては、軽量骨材、ロックウール以外の無機繊維、膨張黒鉛やバーミキュライトなどを主原料とした加熱膨張材、気泡剤、流動化剤、吸熱材、増粘剤などが挙げられる。
In addition, the geopolymer-like cured product of the present invention may contain various admixtures in consideration of its applicability as a heat insulating material, fire-resistant coating material, cold-resistant coating material, fire-resistant adhesive, gap filling material, etc. can.
Examples of such admixtures include lightweight aggregates, inorganic fibers other than rock wool, thermal expansion materials based on expanded graphite or vermiculite, foaming agents, fluidizing agents, heat absorbing materials, thickeners, etc. .
軽量骨材としては、パーライト、スラグライト、火山れき、発砲スチロールなどが挙げられるが、パーライトがより好ましい。
本発明のジオポリマー様硬化体中の軽量骨材の含有量は、乾燥収縮、加熱、冷却によるひび割れ防止、圧縮強度維持、高温加熱時の耐火性維持、加熱時や冷却時の強度及び保形性維持の点から、ロックウール及び／又は粉砕ロックウール１００質量部に対し０質量部～３０質量部が好ましく、５質量部～２０質量部がより好ましく、５質量部～１０質量部がさらに好ましい。
Examples of the lightweight aggregate include perlite, slaglite, volcanic rubble, and styrene foam, but perlite is more preferred.
The content of lightweight aggregate in the geopolymer-like cured product of the present invention is determined by drying shrinkage, prevention of cracking by heating and cooling, maintenance of compressive strength, maintenance of fire resistance during high temperature heating, strength and shape retention during heating and cooling. From the viewpoint of maintaining properties, it is preferably 0 to 30 parts by mass, more preferably 5 to 20 parts by mass, and even more preferably 5 to 10 parts by mass based on 100 parts by mass of rock wool and/or crushed rock wool. .
ロックウール以外の無機繊維としては、アルカリ刺激剤と反応性を示さない無機繊維が好ましく、例えばガラス繊維、金属繊維、炭素繊維、セラミックファイバーなどが挙げられる。本発明ジオポリマー様硬化体中のこれらの無機繊維の含有量は、高温時や低温時の強度保持や保形性の点から、ロックウール及び／又は粉砕ロックウール１００質量部に対し０質量部～２００質量部が好ましく、２質量部～１００質量部がより好ましく、５質量部～１０質量部がさらに好ましい。 Inorganic fibers other than rock wool are preferably inorganic fibers that do not show reactivity with alkaline stimulants, such as glass fibers, metal fibers, carbon fibers, ceramic fibers, and the like. The content of these inorganic fibers in the geopolymer-like cured product of the present invention is 0 parts by mass per 100 parts by mass of rock wool and/or pulverized rock wool from the viewpoint of strength retention and shape retention at high and low temperatures. The amount is preferably 200 parts by weight, more preferably 2 parts by weight to 100 parts by weight, and even more preferably 5 parts to 10 parts by weight.
本発明のジオポリマー様硬化体は、例えばロックウール及び／又は粉砕ロックウールとアルカリ刺激剤とを反応後養生することにより製造できる。
具体的には、ロックウール及び／又は粉砕ロックウールと、アルカリ刺激剤溶液を反応させた後、養生することにより製造できる。なお、アルカリ刺激剤溶液は予め他の原料と混合して使用することができるが、他の原料を充填した後にアルカリ刺激剤溶液を含浸させて使用することもできる。また、前記混和剤は、ロックウール及び／又は粉砕ロックウールに添加して使用することができる。
より具体的な製造法として、ロックウール及び／又は粉砕ロックウールとアルカリ刺激剤溶液を型枠に充填し、次いで養生する方法；ロックウール及び／又は粉砕ロックウールを型枠に充填後、アルカリ刺激剤溶液を含侵させ、次いで養生する方法；ロックウール及び／又は粉砕ロックウールとアルカリ刺激剤溶液を適用部直前で混合し、その混合物を適用部に吹付けたのち、養生する方法（吹付け法）などにより製造することができる。また、吹付け法以外にも、適用部に塗付けたのち、養生する方法（塗付け法）や隙間等に充填したのち、養生する方法（充填法）などにより製造することもできる。養生は、自然養生や加温養生など一般的なセメント製品と同様な養生方法により行うことができる。
The geopolymer-like cured product of the present invention can be produced, for example, by reacting rock wool and/or ground rock wool with an alkali stimulant and then curing the product.
Specifically, it can be produced by reacting rock wool and/or pulverized rock wool with an alkaline stimulant solution and then curing. Note that the alkaline stimulant solution can be used by being mixed with other raw materials in advance, but it can also be used by filling the other raw materials and then impregnating the alkaline stimulant solution. Further, the admixture can be used by being added to rock wool and/or crushed rock wool.
A more specific manufacturing method is to fill a mold with rock wool and/or pulverized rock wool and an alkali stimulant solution, and then cure it; A method in which rock wool and/or crushed rock wool and an alkaline irritant solution are mixed just before the application area, and the mixture is sprayed on the application area and then cured (spraying). It can be manufactured by methods such as In addition to the spraying method, it can also be produced by a method in which it is applied to the application area and then cured (spraying method), or a method in which it is filled into gaps and the like and then cured (filling method). Curing can be performed using the same curing methods as for general cement products, such as natural curing or heating curing.
上記のようにして得られる本発明のジオポリマー様硬化体は、乾燥収縮、加熱、冷却によるひび割れも生じることがなく、通常のジオポリマーに比べてかさ密度が低く、適度な圧縮強度を有するため、熱伝導率が低く、断熱材や耐火被覆材、耐冷被覆材として特に有用である。
本発明のジオポリマー様硬化体のかさ密度は、断熱性、軽量性、耐火性の点から、０．７０～１．７０ｇ／ｃｍ３が好ましく、０．７０～１．６０ｇ／ｃｍ３がより好ましく、０．７０から１．５０ｇ／ｃｍ３がさらに好ましく、０．７０～１．３０ｇ／ｃｍ３がよりさらに好ましい。
また、本発明のジオポリマー様硬化体の圧縮強度は、断熱材、耐火被覆材、耐冷被覆材、充填剤、補修材などとして使用したときの強度、加熱時や冷却時の保形性の点から、０．５０Ｎ／ｍｍ２以上が好ましく、０．７０Ｎ／ｍｍ２以上がより好ましい。また、圧縮強度の上限は、１６Ｎ／ｍｍ２以下まで製造可能である。
The geopolymer-like cured product of the present invention obtained as described above does not suffer from cracking due to drying shrinkage, heating, or cooling, has a lower bulk density than ordinary geopolymers, and has an appropriate compressive strength. , has low thermal conductivity and is particularly useful as a heat insulating material, fireproof coating material, and cold-resistant coating material.
The bulk density of the geopolymer-like cured product of the present invention is preferably 0.70 to 1.70 g/cm 3 , more preferably 0.70 to 1.60 g/cm 3 from the viewpoint of heat insulation, light weight, and fire resistance. It is preferably from 0.70 to 1.50 g/cm 3 , more preferably from 0.70 to 1.30 g/cm 3 .
In addition, the compressive strength of the geopolymer-like cured product of the present invention is determined by the strength when used as a heat insulating material, fire-resistant coating material, cold-resistant coating material, filler, repair material, etc., and shape retention during heating and cooling. Therefore, 0.50 N/mm 2 or more is preferable, and 0.70 N/mm 2 or more is more preferable. Moreover, the upper limit of the compressive strength can be manufactured to 16 N/mm 2 or less.
本発明のジオポリマー様硬化体は、前記のように型枠を用いて製造することもでき、また吹付け法によっても製造することができる。従って、予め成形体として製造しておき、適用部に設置することもできるが、適用現場で吹付け法、塗付け法、充填法などにより形成することもできる。 The geopolymer-like cured product of the present invention can be manufactured using a mold as described above, or can also be manufactured by a spraying method. Therefore, it is possible to manufacture the molded body in advance and install it at the application site, but it is also possible to form it at the application site by a spraying method, painting method, filling method, etc.
次に実施例を挙げて、本発明をさらに詳細に説明するが、本発明はこれら実施例に何ら限定されるものではない。 EXAMPLES Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these Examples in any way.
表１及び表２に記載の材料を用いて、以下の成形方法に従って、ジオポリマー様硬化体を製造した。 A geopolymer-like cured body was manufactured using the materials listed in Tables 1 and 2 and according to the following molding method.
実施例１
試薬1級の水酸化ナトリウムを水に溶解して１０ｍｏｌ/Ｌ濃度のＮａＯＨ溶液を作製した。同様にＪＩＳ Ｋ １４０８に規定される２号水ガラスを水で希釈し、体積比で水ガラス１に対して水２の割合で希釈した水ガラス溶液を作製した。このＮａＯＨ溶液と水ガラス溶液を質量比で１：３となる比率で攪拌混合して、アルカリ刺激剤を得た。次に市販の粉砕ロックウール１００質量部に対してアルカリ刺激剤１０４質量部の割合で配合した原料をパンミキサーで均一に混合してペースト状とした後、型枠に充填して成形し、開口面をコテで平滑とした。乾燥防止と表面保護及び平滑性維持のために型枠の開口部をシートで覆い、室温で1週間の養生を行った。養生後に脱型して６０℃雰囲気とした乾燥庫で２４時間の乾燥を行い、ジオポリマー様硬化体を得た。
Example 1
A NaOH solution with a concentration of 10 mol/L was prepared by dissolving sodium hydroxide, a first grade reagent, in water. Similarly, No. 2 water glass specified in JIS K 1408 was diluted with water to prepare a water glass solution at a volume ratio of 1 part water glass to 2 parts water. This NaOH solution and water glass solution were stirred and mixed at a mass ratio of 1:3 to obtain an alkaline stimulant. Next, the raw materials were mixed at a ratio of 104 parts by mass of an alkaline stimulant to 100 parts by mass of commercially available pulverized rock wool, and the mixture was uniformly mixed in a pan mixer to form a paste, which was then filled into a mold and formed. The surface was smoothed with a trowel. The opening of the formwork was covered with a sheet to prevent drying, protect the surface, and maintain smoothness, and the mold was cured at room temperature for one week. After curing, the mold was demolded and dried for 24 hours in a drying oven with an atmosphere of 60°C to obtain a geopolymer-like cured product.
実施例２
実施例１に記載した粉砕ロックウールとアルカリ刺激剤を用い、型枠に粉砕ロックウールを充填した後、アルカリ刺激剤を型枠内に滴下し棒状器具でロックウールとアルカリ刺激剤を馴染ませて均一に含侵させた。アルカリ刺激剤は粉砕ロックウール１００質量部に対してアルカリ刺激剤８８質量部を用いた。成形後の養生及び乾燥条件は実施例１と同様に行いジオポリマー様硬化体を得た。
Example 2
Using the crushed rock wool and alkaline stimulant described in Example 1, after filling the mold with the crushed rock wool, the alkaline stimulant was dropped into the mold and the rock wool and the alkaline stimulant were blended with a rod-shaped tool. Impregnated uniformly. As the alkali stimulant, 88 parts by mass of the alkali stimulant was used based on 100 parts by mass of ground rock wool. The curing and drying conditions after molding were the same as in Example 1 to obtain a geopolymer-like cured product.
実施例３
ロックウール粒状綿１００質量部に対してアルカリ刺激剤２８３質量部を用い、実施例１と同様の方法によりジオポリマー様硬化体を得た。
Example 3
A geopolymer-like cured product was obtained in the same manner as in Example 1 using 283 parts by mass of an alkali stimulant for 100 parts by mass of rock wool granular cotton.
実施例４
ロックウール粒状綿１００質量部に対してアルカリ刺激剤２９５質量部を用い、実施例２と同様の方法によりジオポリマー様硬化体を得た。
Example 4
A geopolymer-like cured product was obtained in the same manner as in Example 2 using 295 parts by mass of an alkali stimulant for 100 parts by mass of rock wool granular cotton.
実施例５
ロックウール粒状綿５０質量部と、市販の粉砕ロックウール５０質量部の合計１００質量部に対して、アルカリ刺激剤を２４５質量部とした原料を用いて、実施例１と同様の方法によりジオポリマー様硬化体を得た。
Example 5
Using a raw material containing 245 parts by mass of an alkali stimulant to a total of 100 parts by mass of 50 parts by mass of rock wool granular cotton and 50 parts by mass of commercially available crushed rock wool, a geopolymer was prepared in the same manner as in Example 1. A similar cured product was obtained.
実施例６
ロックウール粒状綿５０質量部と市販の粉砕ロックウール５０質量部の合計１００質量部に対して、アルカリ刺激剤を２４５質量部とした原料を用いて実施例２と同様の方法によりジオポリマー様硬化体を得た。
Example 6
Geopolymer-like curing was performed in the same manner as in Example 2 using raw materials containing 245 parts by mass of an alkali stimulant to a total of 100 parts by mass of 50 parts by mass of rock wool granular cotton and 50 parts by mass of commercially available crushed rock wool. I got a body.
実施例７
ロックウール粒状綿をミルで粉砕し、平均アスペクト比が７の粉砕ロックウールを作製した。この粉砕ロックウール１００質量部に対してアルカリ刺激剤６９質量部とした原料を用いて実施例１と同様の方法でジオポリマー様硬化体を得た。
Example 7
Rock wool granular cotton was pulverized with a mill to produce pulverized rock wool having an average aspect ratio of 7. A geopolymer-like cured product was obtained in the same manner as in Example 1 using raw materials containing 69 parts by mass of an alkali stimulant based on 100 parts by mass of this pulverized rock wool.
実施例８
実施例７と同様の原料を用い、実施例２と同様の方法でジオポリマー様硬化体を得た。
Example 8
A geopolymer-like cured body was obtained using the same raw materials as in Example 7 and in the same manner as in Example 2.
実施例９
市販の粉砕ロックウール１００質量部とパーライト１０質量部をパンミキサーで混合し、次にアルカリ刺激剤１０２質量部を加え混合してペースト状とした。このペーストを用いて実施例１と同様の方法でジオポリマー様硬化体を得た。
Example 9
100 parts by mass of commercially available crushed rock wool and 10 parts by mass of perlite were mixed in a pan mixer, and then 102 parts by mass of an alkaline stimulant were added and mixed to form a paste. A geopolymer-like cured body was obtained using this paste in the same manner as in Example 1.
実施例１０
実施例９と同様に市販の粉砕ロックウール１００質量部とパーライト１０質量部を混合し、実施例２と同様にアルカリ刺激剤１０２質量部を含侵させてジオポリマー様硬化体を得た。
Example 10
As in Example 9, 100 parts by mass of commercially available crushed rock wool and 10 parts by mass of perlite were mixed, and as in Example 2, 102 parts by mass of an alkali stimulant was impregnated to obtain a geopolymer-like cured product.
比較例１
石炭灰８０質量部と高炉スラグ微粉末２０質量部をパンミキサーで混合し、実施例１と同様に石炭灰と高炉スラグ微粉末の合計１００質量部に対してアルカリ刺激剤３８質量部を加えてさらに混合してペースト状とした。このペーストを用いて実施例１と同様の方法で成形体を得た。
Comparative example 1
80 parts by mass of coal ash and 20 parts by mass of pulverized blast furnace slag were mixed in a pan mixer, and 38 parts by mass of an alkali stimulant was added to a total of 100 parts by mass of coal ash and pulverized blast furnace slag as in Example 1. It was further mixed to form a paste. A molded article was obtained using this paste in the same manner as in Example 1.
比較例２
高炉スラグ微粉末１００質量部に対してアルカリ刺激剤５４質量部とした原料を用い、実施例１と同様の方法で成形体を得た。
Comparative example 2
A molded body was obtained in the same manner as in Example 1 using raw materials containing 54 parts by mass of an alkali stimulant based on 100 parts by mass of pulverized blast furnace slag powder.
比較例３
石炭灰７０質量部と高炉スラグ微粉末３０質量部の合計１００質量部に対してアルカリ刺激剤３８質量部とした原料を用い、実施例１と同様の方法で成形体を得た。
Comparative example 3
A molded body was obtained in the same manner as in Example 1 using raw materials in which 38 parts by mass of the alkali stimulant was added to a total of 100 parts by mass of 70 parts by mass of coal ash and 30 parts by mass of pulverized blast furnace slag powder.
比較例４
石炭灰９０質量部と高炉スラグ微粉末１０質量部の合計１００質量部に対してアルカリ刺激剤３８質量部とした原料を用い、実施例１と同様の方法で成形体を得た。
Comparative example 4
A molded body was obtained in the same manner as in Example 1 using raw materials in which 38 parts by mass of the alkali stimulant was added to a total of 100 parts by mass of 90 parts by mass of coal ash and 10 parts by mass of pulverized blast furnace slag powder.
実施例３の成形体の写真を図１に示す。実施例１及び実施例２の成形体の写真を図２に示す。比較例２の成形体と実施例２の成形体の表面の写真を図３に示す。 A photograph of the molded article of Example 3 is shown in FIG. Photographs of the molded bodies of Example 1 and Example 2 are shown in FIG. Photographs of the surfaces of the molded product of Comparative Example 2 and the molded product of Example 2 are shown in FIG.
得られたジオポリマー様硬化体の物性を測定し、表面観察及び耐熱性の評価を行った。
結果を表１及び表２に示す。
The physical properties of the obtained geopolymer-like cured product were measured, and the surface was observed and the heat resistance was evaluated.
The results are shown in Tables 1 and 2.
［かさ密度の測定］
６０℃で２４時間の乾燥後、外寸法をノギスで測定して体積を求めるとともに、質量を測定し、次式によりかさ密度を求めた。
かさ密度（ｇ／ｃｍ３）＝ 質量（ｇ） ／ 体積（ｃｍ３）
[Measurement of bulk density]
After drying at 60° C. for 24 hours, the external dimensions were measured with calipers to determine the volume, the mass was also measured, and the bulk density was determined using the following formula.
Bulk density (g/cm 3 ) = mass (g) / volume (cm 3 )
［圧縮強度の測定］
強度試験機を用いて、最大荷重を測定し、試験体中央部の断面積で最大荷重を除して圧縮強度（Ｎ／ｍｍ2）を求めた。試験条件は幅４０ｍｍ×長さ４０ｍｍ×高さ８０ｍｍの試験体を上面から速度２ｍｍ／分で加圧した。
[Measurement of compressive strength]
The maximum load was measured using a strength testing machine, and the maximum load was divided by the cross-sectional area of the center of the specimen to determine the compressive strength (N/mm 2 ). The test conditions were as follows: A test specimen measuring 40 mm in width x 40 mm in length x 80 mm in height was pressurized from above at a speed of 2 mm/min.
［表面観察］
養生前後に目視により表面観察を行い、乾燥収縮による亀裂等の有無を確認した。観察の判断基準は亀裂が全くないものを○、亀裂があるものを×とした。
[Surface observation]
The surface was visually observed before and after curing to check for cracks caused by drying shrinkage. The observation criteria were as follows: No cracks at all were marked as ○, and cracks were marked as ×.
［熱伝導率の測定］
ＪＩＳ Ａ １４１２-２記載の熱流計法に基づき、熱伝導率計を用いて熱伝導率を測定した。測定温度は中心温度２０℃、温度差２０℃に設定した。
実施例２のジオポリマー様硬化体の熱伝導率は、０．２１６W/mKであった。
[Measurement of thermal conductivity]
Thermal conductivity was measured using a thermal conductivity meter based on the heat flow meter method described in JIS A 1412-2. The measurement temperature was set at a center temperature of 20°C and a temperature difference of 20°C.
The thermal conductivity of the geopolymer-like cured body of Example 2 was 0.216 W/mK.
［耐熱性の確認］
電気炉で４００℃３時間加熱した後に、表面の亀裂観察を行った。観察の判断基準は加熱前と比較し亀裂が全く発生していないものを○、亀裂が発生したものを×とした。
[Check heat resistance]
After heating at 400° C. for 3 hours in an electric furnace, cracks on the surface were observed. The observation criteria were as follows: Comparing to before heating, a sample with no cracks was rated as ○, and a sample with cracks was graded as ×.
［耐冷性の確認］
液体窒素に１分間浸漬した後に取り出し、表面の亀裂観察を確認した。表面観察の判断基準は浸漬前と比較し亀裂が全く発生していないものを○、亀裂が発生したものを×とした。
[Cold resistance confirmation]
After being immersed in liquid nitrogen for 1 minute, it was taken out and cracks on the surface were observed. The criteria for surface observation were as follows: Comparing with before immersion, a sample with no cracks was graded as ○, and a sample with cracks was graded as x.
表１及び表２のように、本発明によるジオポリマー様硬化体は、乾燥収縮、加熱、冷却によるひび割れが生じることなく、耐熱性、耐冷性に優れる硬化体であった。また、本発明のジオポリマー様硬化体は、０．７０～１．７０ｇ／ｃｍ３のかさ密度を有し、軽量性に優れており、熱伝導性も低く、断熱材として優れていることが分かった。また、０．５０Ｎ／ｍｍ２以上の圧縮強度を有し、施工性も良好であることが分かった。
一方、従来のジオポリマーは、乾燥収縮によるひび割れが生じ、耐熱性も低かった。
As shown in Tables 1 and 2, the geopolymer-like cured product according to the present invention was a cured product with excellent heat resistance and cold resistance without drying shrinkage, heating, or cooling-induced cracking. Furthermore, the geopolymer-like cured product of the present invention has a bulk density of 0.70 to 1.70 g/cm 3 , is lightweight, has low thermal conductivity, and is excellent as a heat insulating material. Do you get it. It was also found that it had a compressive strength of 0.50 N/mm 2 or more and had good workability.
On the other hand, conventional geopolymers tend to crack due to drying shrinkage and have low heat resistance.
Claims (6)
かさ密度が０．７０～１．７０であり、圧縮強度が０．５０～１６．０Ｎ／ｍｍ2であり、
前記アルカリ刺激剤が、アルカリ金属水酸化物及びアルカリ金属ケイ酸塩であり、
木質系の補強材を含有しない、ジオポリマー様硬化体。 A geopolymer-like cured product containing rock wool and/or ground rock wool as an active filler, the main component being the mass ratio (A/ B) is a reactant with 1.6 to 7.0,
The bulk density is 0.70 to 1.70, the compressive strength is 0.50 to 16.0 N/mm 2 ,
the alkali stimulant is an alkali metal hydroxide and an alkali metal silicate ;
A geopolymer-like cured product that does not contain wood-based reinforcing materials.
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| JP2003225528A (en) | 2002-02-05 | 2003-08-12 | Nippon Steel Chem Co Ltd | Humidity conditioning material utilizing rock wool and method for manufacturing the same |
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| JPH0551244A (en) * | 1991-06-13 | 1993-03-02 | Nippon Steel Chem Co Ltd | Production of cement molded body |
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