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Relation Between Tensile Strength and Compressive Strength of Concrete01:30

Relation Between Tensile Strength and Compressive Strength of Concrete

742
Concrete is a fundamental building material, and understanding its strengths is crucial for construction projects. The relationship between its tensile and compressive strengths is intricate, showing that while these strengths are related, they do not increase at the same rate. Tensile strength's growth is slower and is affected by various factors such as the methods used for testing, the size and shape of the specimen, the texture of the aggregate used, and the moisture content of the...
742
Behavior of Concrete Under Compressive Load01:23

Behavior of Concrete Under Compressive Load

689
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
689
Non-destructive Tests for Concrete Strength01:12

Non-destructive Tests for Concrete Strength

673
The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it...
673
Dynamic Modulus of Elasticity of Concrete01:16

Dynamic Modulus of Elasticity of Concrete

1.1K
The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by a...
1.1K
Tensile Strength Considerations of Concrete01:16

Tensile Strength Considerations of Concrete

632
Considering the tensile strength of concrete involves recognizing that the theoretical strength of cement paste can be up to a thousand times higher than what is observed in practical applications. This significant discrepancy is largely attributed to the presence of microscopic cracks within the concrete. These cracks tend to amplify stress at their tips when a load is applied, a phenomenon explained by Griffith's theory of brittle fracture.
The dimensions and shape of a concrete specimen...
632
Strength of Cement01:20

Strength of Cement

669
Strength tests for cement are not performed directly on neat cement paste due to difficulty in obtaining consistent, reliable specimens. Instead, cement is typically tested in the form of cement-sand mortar.
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
669

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Author Spotlight: Efficient Image Recognition Using Directional Gradient Histogram Technique and Support Vector Machines
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最適化された深層学習と大規模言語モデルを用いたコンクリート圧縮強度の予測

Safaa Zaman1, Marwa M Eid2, Ebrahim A Mattar3

  • 1Information Sciences Department, College of Life Sciences, Kuwait University, Kuwait City, Kuwait.

Scientific reports
|February 26, 2026
PubMed
まとめ
この要約は機械生成です。

本研究は、コンクリート圧縮強度の正確な予測、持続可能な建設材料の設計の改善のために、iHow最適化アルゴリズム(iHowOA)と時空間グラフ畳み込みネットワーク(STGCN)を組み合わせた新しいAIフレームワークを紹介します。

キーワード:
コンクリート圧縮強度LLMメタヒューリスティクスSTGCN持続可能な建設材料

さらに関連する動画

Augmenting Large Language Models via Vector Embeddings to Improve Domain-Specific Responsiveness
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Author Spotlight: Efficient Image Recognition Using Directional Gradient Histogram Technique and Support Vector Machines
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Augmenting Large Language Models via Vector Embeddings to Improve Domain-Specific Responsiveness
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科学分野:

  • 材料科学
  • 土木工学
  • 人工知能

背景:

  • コンクリート圧縮強度の予測は、持続可能な建設にとって重要です。
  • 混合成分、混和剤、硬化条件間の複雑な相互作用は課題をもたらします。
  • 既存の方法は、これらの相互作用の非線形的な性質に対処するのに苦労することがよくあります。

研究 の 目的:

  • コンクリート圧縮強度予測のための高度なハイブリッドAIフレームワークを開発すること。
  • 建設材料の予測モデルの精度と堅牢性を向上させること。
  • 材料科学の応用のため、新しい最適化および深層学習技術を活用すること。

主な方法:

  • iHow最適化アルゴリズム(iHowOA)と時空間グラフ畳み込みネットワーク(STGCN)の統合。
  • データの前処理(意味的検証および特徴ハーモナイゼーションを含む)のための大規模言語モデル(LLM)の利用。
  • iHowOAの適応的意思決定および知識獲得能力を使用したSTGCNアーキテクチャの最適化。
  • 空間的依存関係および時間的強度進化を捉えるためのグラフベースモデリング。

主要な成果:

  • 提案されたiHowOA-STGCNフレームワークは、他の10のメタヒューリスティックオプティマイザーと比較して優れた予測性能を示しました。
  • 公開データセットで低い予測誤差と高い相関係数を達成しました。
  • セメント特性、年齢依存の強度増加、物理化学的相互作用の間の重要な関係を特定しました。

結論:

  • iHowOA-STGCNフレームワークは、コンクリート強度予測のための有望なデータ駆動型意思決定支援ツールを提供します。
  • LLM駆動の前処理は、データ品質とモデル入力の堅牢性を向上させます。
  • 実世界のシナリオでの一般化可能性と実用的な適用性を確認するために、さまざまなデータセットでのさらなる検証が推奨されます。