JP4527370B2 - トンネル掘削用の安定化用注入薬液組成物、および、それを用いた安定強化工法 - Google Patents
トンネル掘削用の安定化用注入薬液組成物、および、それを用いた安定強化工法 Download PDFInfo
- Publication number
- JP4527370B2 JP4527370B2 JP2003290087A JP2003290087A JP4527370B2 JP 4527370 B2 JP4527370 B2 JP 4527370B2 JP 2003290087 A JP2003290087 A JP 2003290087A JP 2003290087 A JP2003290087 A JP 2003290087A JP 4527370 B2 JP4527370 B2 JP 4527370B2
- Authority
- JP
- Japan
- Prior art keywords
- polyisocyanate
- composition
- sodium silicate
- component
- stabilization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- DWFKOMDBEKIATP-UHFFFAOYSA-N n'-[2-[2-(dimethylamino)ethyl-methylamino]ethyl]-n,n,n'-trimethylethane-1,2-diamine Chemical compound CN(C)CCN(C)CCN(C)CCN(C)C DWFKOMDBEKIATP-UHFFFAOYSA-N 0.000 description 1
- SKCNNQDRNPQEFU-UHFFFAOYSA-N n'-[3-(dimethylamino)propyl]-n,n,n'-trimethylpropane-1,3-diamine Chemical compound CN(C)CCCN(C)CCCN(C)C SKCNNQDRNPQEFU-UHFFFAOYSA-N 0.000 description 1
- TXXWBTOATXBWDR-UHFFFAOYSA-N n,n,n',n'-tetramethylhexane-1,6-diamine Chemical compound CN(C)CCCCCCN(C)C TXXWBTOATXBWDR-UHFFFAOYSA-N 0.000 description 1
- PMHXGHYANBXRSZ-UHFFFAOYSA-N n,n-dimethyl-2-morpholin-4-ylethanamine Chemical compound CN(C)CCN1CCOCC1 PMHXGHYANBXRSZ-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
ポリイソシアネート組成物(B)の引火点が200℃以上であり、
希釈剤(B2)が、脂肪族ジカルボン酸とポリオキシアルキレンアルキルエーテルアルコールから得られるジエステル、およびプロピレンカーボネートからなり、
前記プロピレンカーボネートの添加部数が、(B)成分中に5重量%未満であることを特徴とすることを特徴とする安定化用注入薬液組成物に関する。
ポリイソシアネート組成物(B)の引火点が200℃以上であり、
希釈剤(B2)が、脂肪族ジカルボン酸とポリオキシアルキレンアルキルエーテルアルコールから得られるジエステル、およびプロピレンカーボネートからなり、
前記プロピレンカーボネートの添加部数が、(B)成分中に5重量%未満である。
Na2O・xSiO2・nH2O
で表わされる。ここで、xは、SiO2(酸化ケイ素)とNa2O(酸化ナトリウム)とのモル比を表し、好ましくは0.5〜4、より好ましくは2〜3.5である。xが0.5より小さいと、発泡硬化反応における無水ケイ酸ゲル化反応の割合が減少するため、反応性のバランスが悪くなる傾向があり、4をこえると、ケイ酸ナトリウム水溶液の粘度が高くなるため、(B)成分との混合性および使用時の作業性が低下する傾向がある。
表1に示すように、原料をそれぞれ添加・混合し、A液を調製した。A液の調製に用いた原料を、以下にまとめて説明する。
ケイ酸ナトリウム1:SiO2/Na2O比2.5(モル比)、固形分37重量%
ケイ酸ナトリウム2:SiO2/Na2O比2.5(モル比)、固形分40重量%
ケイ酸ナトリウム3:SiO2/Na2O比2.2(モル比)、固形分41重量%
(アミン触媒)
TMAEEA:N,N,N’−トリメチルアミノエチルエタノールアミン
(ポリオール)
EG:エチレングリコール
表2に示すように、原料をそれぞれ添加・混合し、B液を調製した。B液の調製に用いた原料を、以下にまとめて説明する。
P−MDI−1:PAPI135(ダウ・ポリウレタン日本(株)製)、NCO含量31.5重量%
P−MDI−2:ポリメリックMDI系プレポリマー。NCO含量27.5重量%(PAPI135(ダウ・ポリウレタン日本(株)製)95重量部と、グリセリンにプロピレンオキシド70重量%とエチレンオキシド30重量%を付加重合させて得られた数平均分子量1500のポリオキシアルキレントリオール5重量部とを、80℃で、3時間反応させて得た。)
(希釈剤)
DBEEA:アジピン酸とn−ブタノールのエチレンオキシド付加物とのジエステル、引火点215℃、数平均分子量434
PC:プロピレンカーボネート、引火点132℃
EGDAC:エチレングリコールジアセテート、引火点96℃
(シリコーン整泡剤)
SZ−1642:日本ユニカー(株)製シリコーン系整泡剤
容量1リットルのポリカップに、表3に示す組み合わせで、20℃に温度調節したA液およびB液を100gずつ計量し、ミキサーで500RPMの回転速度で10秒間混合・撹拌した。このときの性状について、以下の評価を行なった。結果を表3に示す。なお、比較例3は、発泡倍率が低いために3倍発泡供試体を成型することができず、圧縮強度の測定が不可能であった。
Claims (6)
- (A)ケイ酸ナトリウム水溶液と、(B)(B1)ポリイソシアネートおよび(B2)希釈剤を含有するポリイソシアネート組成物とからなるトンネル掘削用の安定化用注入薬液組成物において、
ポリイソシアネート組成物(B)の引火点が200℃以上であり、
希釈剤(B2)が、脂肪族ジカルボン酸とポリオキシアルキレンアルキルエーテルアルコールから得られるジエステル、およびプロピレンカーボネートからなり、
前記プロピレンカーボネートの添加部数が、(B)成分中に5重量%未満であることを特徴とする安定化用注入薬液組成物。 - ケイ酸ナトリウム水溶液(A)がアミン触媒を含有する請求項1記載の安定化用注入薬液組成物。
- ケイ酸ナトリウム水溶液(A)がポリオールを含有する請求項1記載のトンネル掘削用の安定化用注入薬液組成物。
- ポリイソシアネート(B1)が、ポリイソシアネートとポリオールとを反応させて得られる末端イソシアネート基含有ウレタンプレポリマーからなる請求項1記載の安定化用注入薬液組成物。
- ポリイソシアネート組成物(B)がシリコーン整泡剤を含有する請求項1記載の安定化用注入薬液組成物。
- 山岳トンネル工法におけるトンネル掘削用の安定強化工法であって、ウレタン系注入式フォアポーリング工法および/または注入式長尺先受工法により、請求項1〜5記載の注入薬液組成物を岩盤ないし地盤に注入し、固結させる安定強化工法。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5652074B2 (ja) * | 1973-03-29 | 1981-12-09 | ||
JPH08302348A (ja) * | 1995-05-10 | 1996-11-19 | Bridgestone Corp | 地盤改良用発泡性薬液及びその樹脂組成物 |
JP2001031970A (ja) * | 1999-07-19 | 2001-02-06 | Tokai Rubber Ind Ltd | 掘削機により地盤を掘削するに際しての空隙充填工法用薬液 |
JP2001181634A (ja) * | 1999-12-27 | 2001-07-03 | Nippon Polyurethane Ind Co Ltd | 岩盤、地盤、人工構造物等の安定化用注入薬液組成物及びそれを用いた安定強化止水工法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5652074B2 (ja) * | 1973-03-29 | 1981-12-09 | ||
JPH08302348A (ja) * | 1995-05-10 | 1996-11-19 | Bridgestone Corp | 地盤改良用発泡性薬液及びその樹脂組成物 |
JP2001031970A (ja) * | 1999-07-19 | 2001-02-06 | Tokai Rubber Ind Ltd | 掘削機により地盤を掘削するに際しての空隙充填工法用薬液 |
JP2001181634A (ja) * | 1999-12-27 | 2001-07-03 | Nippon Polyurethane Ind Co Ltd | 岩盤、地盤、人工構造物等の安定化用注入薬液組成物及びそれを用いた安定強化止水工法 |
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