砂コンクリートの縮小予測モデルの分析と修正
Wei Fan1, Yang Wei1,2, Jiyang Yi1
1College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China.
Materials (Basel, Switzerland)
|August 28, 2025
まとめ
製造砂コンクリート (MSC) の収縮は天然砂コンクリートとは異なります. 製造された砂の含有量を組み込む新しいモデルは,グリーンコンストラクションの収縮予測の精度を向上させます.
科学分野:
- 土木工学
- 材料科学
- 持続可能な建設
背景:
- 自然の砂の枯渇により 緑の建築材料として 製造された砂のような代替材料が必要になります
- 製造された砂コンクリート (MSC) は,従来のコンクリートと比較して独特の収縮行動を示す.
- 既存の収縮モデルは,製造された砂の性質を十分に考慮せず,精度を制限しています.
研究 の 目的:
- MSCの古典的な収縮予測モデルを評価する.
- 製造された砂の特性に関する既存のモデルの限界を特定する.
- MSCの収縮を正確に予測するための改良モデルを開発する.
主な方法:
- 実験的なMSCデータを用いてACI 209,CEB-FIP 2010,B3,GL 2000モデルを体系的に評価する.
- 製造された砂の性質 (粒子の形状,階層,石粉) が収縮に影響する分析.
- 非線形回帰ベースの補正関数の開発
主要な成果:
- B3とCEB-FIPの2010年モデルは,製造砂の性質を無視したため,予測の大きな不一致を示した.
- 改良されたACI 209およびGL 2000モデルを使用した修正機能が開発されました.
- 改造されたモデルは,すべての交換率でMSCのフィッティング性能と予測の強さを改善しました.
結論:
- クラシックな収縮モデルはMSCを正確に予測するために再校正を必要とします.
- 製造された砂の含有量は,収縮モデルを改善するための重要な変数です.
- 強化されたモデルは,MSCの縮小を予測するための信頼できる枠組みを提供し,持続可能な建設を支援します.
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