本文選題：抗壓強度 + 分形維數(shù)�。� 參考：《建筑材料學報》2017年04期

【摘要】：為定量描述纖維增強高性能混凝土(FRHPC)的破壞過程及機理,運用斷裂力學理論并引入孔隙分形維數(shù),在測試了25組不同水膠比、不同養(yǎng)護制度試件的抗壓強度、孔結構參數(shù)的基礎上,建立了FRHPC的破壞概率模型.該模型不僅考慮了孔隙分形維數(shù)對基體裂縫復雜程度的影響,還考慮了纖維增強系數(shù)對基體失效概率的影響.模型回歸分析結果表明:根據(jù)該模型計算的FRHPC破壞概率與破壞概率試驗值有較高相關性,為定量表征FRHPC的破壞過程及機理分析提供了一種全新的視角和思路,也從側面驗證了模型的科學性與實用性.
[Abstract]:In order to describe quantitatively the failure process and mechanism of fiber reinforced high performance concrete (FRHPC), the compressive strength of 25 groups of specimens with different water / binder ratio and different curing system was tested by using fracture mechanics theory and introducing pore fractal dimension. Based on the pore structure parameters, the failure probability model of FRHPC is established. The model not only considers the influence of fractal dimension of pore on the fracture complexity of matrix, but also considers the influence of fiber reinforcement coefficient on the failure probability of matrix. The results of regression analysis show that the failure probability of FRHPC calculated by the model has a high correlation with the test value of the failure probability, which provides a new perspective and train of thought for quantificationally characterizing the damage process and mechanism of FRHPC. It also verifies the scientific nature and practicability of the model from the side.
【作者單位】： 內蒙古工業(yè)大學土木工程學院;
【基金】：國家自然科學基金資助項目(11362013,51468049) 內蒙古工業(yè)大學基金資助項目(ZD201610)
【分類號】：TU528.572
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本文編號：1941253