JP6020990B2 - 浚渫土・製鋼スラグ混合材の品質管理方法 - Google Patents
浚渫土・製鋼スラグ混合材の品質管理方法 Download PDFInfo
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- JP6020990B2 JP6020990B2 JP2012142988A JP2012142988A JP6020990B2 JP 6020990 B2 JP6020990 B2 JP 6020990B2 JP 2012142988 A JP2012142988 A JP 2012142988A JP 2012142988 A JP2012142988 A JP 2012142988A JP 6020990 B2 JP6020990 B2 JP 6020990B2
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Description
a.配合条件設定
まず、浚渫土含水比、製鋼スラグ添加量を変化させた配合試験を実施し、所定の強度が得られる配合条件を決定する。
表1
この際、強度を測定した試料についてCa含有量を測定し、カルシウム含有量と強度の相関を確認する(図2)
b.浚渫土と製鋼スラグの混合
c.浚渫土・製鋼スラグ混合材の資料採取
d.蛍光X線分析によるカルシウム含有量測定
e.カルシウム含有量の判定
表2
f.カルシウム含有量からの発現強度予測
g.予測値の目標達成判定
上記fで求めた予測値が、目標強度に達していない場合には、再度配合条件を見直す。
h.供試体を高温で養生
i.短期強度からの発現強度の予測
表4 養生温度と一軸圧縮強さ測定例
j.予測値の目標達成判定
k.打設
Claims (1)
- 予め定められた浚渫土と製鋼スラグとの配合条件に従って混合された浚渫土・製鋼スラグ混合材から採取した試料中から蛍光X線分析によりカルシウム含有量を測定するカルシウム含有量測定工程、
前記測定によるカルシウム含有量の測定値を、予め求めておいた浚渫土・製鋼スラグ混合材のカルシウム含有量と一軸圧縮強さ等の強度との相関に照らし合わせて強度発現を予測する予測工程、
前記強度発現の予測値が目標強度を達成しているか否かを判定する判定工程、
該判定工程にて前記強度発現の予測値が目標強度を達成していない場合に、配合条件を見直して前記カルシウム含有量測定工程、予測工程及び判定工程を再度行う工程、
前記判定工程にて予測値が目標強度に達成していた場合に、供試体を作成し、これを高温養生する工程、
前記高温養生による短期強度から将来の発現強度を予測する工程、
前記将来の発現強度の予測値が目標強度に達成しているか否かを判定する工程、
以上の工程を経ることを特徴としてなる浚渫土・製鋼スラグ混合材の品質管理方法。
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JP6409581B2 (ja) * | 2015-01-13 | 2018-10-24 | 新日鐵住金株式会社 | 改質土の強度予測方法 |
JP6464904B2 (ja) * | 2015-04-16 | 2019-02-06 | 新日鐵住金株式会社 | 改質土の強度予測方法及び改質土の製造方法 |
CN105424908B (zh) * | 2015-11-16 | 2017-03-15 | 河海大学常州校区 | 一种疏浚土水下实验的水槽装置 |
JP6674142B2 (ja) * | 2016-10-19 | 2020-04-01 | 住友金属鉱山株式会社 | 銅スラグ含有細骨材の検査方法 |
JP7366801B2 (ja) * | 2020-02-26 | 2023-10-23 | 東亜建設工業株式会社 | セメント改良土の強度の推定方法 |
JP7406408B2 (ja) | 2020-03-09 | 2023-12-27 | 株式会社竹中工務店 | 杭強度推定方法 |
CN113009102B (zh) * | 2021-02-26 | 2022-10-21 | 柳州钢铁股份有限公司 | 测定废钢成分的方法和废钢成分样品检测的加工设备 |
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JP4776973B2 (ja) * | 2004-05-10 | 2011-09-21 | 新日本製鐵株式会社 | 鉄鋼スラグの決定方法および鉄鋼スラグの固化状況予測方法 |
JP5596942B2 (ja) * | 2009-07-03 | 2014-09-24 | 日本製紙株式会社 | 水底堆積土の処理方法 |
JP5326995B2 (ja) * | 2009-10-30 | 2013-10-30 | 新日鐵住金株式会社 | 泥土含有固化体及びその製造方法 |
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