引用本文摘 ? 要：通過抗壓強度、劈裂抗拉強度、峰值壓應變、靜態彈性模量和應力-應變關系試驗，研究了自密實混凝土強度、再生大骨料強度、再生大骨料粒徑對再生大骨料自密實混凝土（RCASCC）力學性能的影響。采用數據擬合的方法對國內外典型混凝土單軸受壓應力-應變模型中的相關系數進行了修正，給出了適用于RCASCC的單軸受壓本構模型，分別建立了RCASCC抗壓強度、劈裂抗拉強度、峰值應變和彈性模量與自密實混凝土強度、再生大骨料強度、再生大骨料粒徑的函數關系式，并對4種本構模型的擬合程度進行了比較分析。結果表明：所擬合的三次多項式型曲線和三角函數型曲線與實際應力-應變關系吻合程度相對較高。 Abstract: The effects of the strength of self-compacting concrete, strength of recycled larger size aggregate, size of recycled larger size aggregate on mechanical properties of recycled larger size aggregate self-compacting concrete(RCASCC) were studied through compressive strength, splitting tensile strength, peak compressive strain, elastic modulus and stress-strain relationship tests. The data fitting method was used to correct the correlation coefficients in the typical uniaxial compression stress-strain models of concrete in China and abroad. A uniaxial compression constitutive model for RCASCC was presented. The functional relationship between the compressive strength/splitting tensile strength/peak strain /elastic modulus of RCASCC and the strength of self-compacting concrete, strength of recycled larger size aggregate, size of recycled larger size aggregate was established, and the fitting degree of the four constitutive models was compared and analyzed. The results show that the fitted cubic polynomial curve and trigonometric function curve are in relatively high agreement with the actual stress-strain relationship.
王建超,趙豐磊,馬光卓,等.再生大骨料自密實混凝土力學性能研究[J].混凝土與水泥制品,2021(10):1-6. WANG J C,ZHAO F L,MA G Z,et al.Study on Mechanical Properties of Recycled Larger Size Aggregate Self-compacting Concrete[J].China Concrete and Cement Products,2021(10):1-6.