JP2015017265A - 地盤改良土および地盤改良方法 - Google Patents
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
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- 238000010298 pulverizing process Methods 0.000 description 3
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- 239000002734 clay mineral Substances 0.000 description 2
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- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- KSPIHGBHKVISFI-UHFFFAOYSA-N Diphenylcarbazide Chemical compound C=1C=CC=CC=1NNC(=O)NNC1=CC=CC=C1 KSPIHGBHKVISFI-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
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- 235000011941 Tilia x europaea Nutrition 0.000 description 1
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- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
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Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
【解決手段】本発明の地盤改良土は、アロフェン系の火山灰質粘性土と地盤改良用固化材とが混練されて水和反応を生じて形成される地盤改良土である。この地盤改良土は、アロフェン系の火山灰質粘性土100重量部に対して、地盤改良用固化材55〜70重量部が配合されたものである。地盤改良用固化材は、4週目の一軸圧縮強度が目標強度である425kN/m2以上になるように、高炉スラグ100重量部に対して、消石灰25〜50重量部と、半水石膏25〜50重量部と、が配合されたものである。目標強度である425kN/m2は、住宅地盤の許容応力度目標値を3tf/m2、安全率を3として、抜き取りコアの平均一軸圧縮強度qufを逆算し、さらに(現場/室内)強さ比を0.5と設定して求めたものである。
【選択図】なし
Description
前記アロフェン系の火山灰質粘性土100重量部に対して、地盤改良用固化材55〜70重量部が配合され、当該地盤改良用固化材は、4週目の一軸圧縮強度が目標強度である425kN/m2以上になるように、高炉スラグ100重量部に対して、消石灰25〜50重量部と、半水石膏25〜50重量部と、が配合されたものであり、
前記目標強度である425kN/m2は、住宅地盤の許容応力度目標値を3tf/m2、安全率を3として、抜き取りコアの平均一軸圧縮強度qufを逆算し、さらに(現場/室内)強さ比を0.5と設定して求めたものであることを特徴とする。
の発現強度を得ることができる。
まず、本実施例の地盤改良用固化材と比較するために、従来のセメント系固化材をカオリン粘土に混合した配合例A〜Dの配合及び結果を表3に示す。
次に、配合例1〜6の配合及び結果を表4に示す。
次に、配合例7〜13の配合及び結果を表5に示す。
次に、配合例14〜21の配合及び結果を表6に示す。
表8に、配合例22〜29の配合及び結果を示す。
重量部に対して高炉スラグ40重量部を配合すればより強度が安定することがわかる。
利用することができる。
Claims (2)
- アロフェン系の火山灰質粘性土と地盤改良用固化材とが混練されて水和反応を生じて形成される地盤改良土であって、
前記アロフェン系の火山灰質粘性土100重量部に対して、地盤改良用固化材55〜70重量部が配合され、当該地盤改良用固化材は、4週目の一軸圧縮強度が目標強度である425kN/m2以上になるように、高炉スラグ100重量部に対して、消石灰25〜50重量部と、半水石膏25〜50重量部と、が配合されたものであり、
前記目標強度である425kN/m2は、住宅地盤の許容応力度目標値を3tf/m2、安全率を3として、抜き取りコアの平均一軸圧縮強度qufを逆算し、さらに(現場/室内)強さ比を0.5と設定して求めたものであることを特徴とする地盤改良土。 - アロフェン系の火山灰質粘性土と地盤改良用固化材とを混練する地盤改良方法であって、
前記アロフェン系の火山灰質粘性土100重量部に対して、請求項1に記載の地盤改良用固化材55〜70重量部を混入し、撹拌することを特徴とする地盤改良方法。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101863673B1 (ko) * | 2017-11-07 | 2018-06-01 | 한우선 | 고함수토용 개질안정처리제와 그 제조방법 및 이를 이용한 고함수토의 처리방법 |
JP2018159264A (ja) * | 2018-04-13 | 2018-10-11 | 株式会社上村開発 | 地盤改良方法 |
JP2021025289A (ja) * | 2019-08-05 | 2021-02-22 | 株式会社不動テトラ | 流動化砂用混合材、改良流動化砂の製造方法、流動化砂組成物及び流動化砂組成物の製造方法 |
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JP6889876B2 (ja) * | 2017-02-24 | 2021-06-18 | 株式会社 Gtスパイラル | 地盤補修工法及びそれに用いる固化剤 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54113910A (en) * | 1978-02-24 | 1979-09-05 | Onoda Cement Co Ltd | Improving material of organic matter soft ground |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS54113910A (en) * | 1978-02-24 | 1979-09-05 | Onoda Cement Co Ltd | Improving material of organic matter soft ground |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101863673B1 (ko) * | 2017-11-07 | 2018-06-01 | 한우선 | 고함수토용 개질안정처리제와 그 제조방법 및 이를 이용한 고함수토의 처리방법 |
JP2018159264A (ja) * | 2018-04-13 | 2018-10-11 | 株式会社上村開発 | 地盤改良方法 |
JP2021025289A (ja) * | 2019-08-05 | 2021-02-22 | 株式会社不動テトラ | 流動化砂用混合材、改良流動化砂の製造方法、流動化砂組成物及び流動化砂組成物の製造方法 |
JP7231513B2 (ja) | 2019-08-05 | 2023-03-01 | 株式会社不動テトラ | 流動化砂組成物 |
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