论文部分内容阅读
多孔混凝土作为路面的基层,应具有良好的物理性质和力学性质,前者主要指其排水、收缩及抗冲刷等性能,后者主要指其强度和应力-应变特性。通过试验与分析,给出多孔混凝土有效空隙率和全空隙率,及渗透系数与空隙率的关系;得出多孔混凝土强度随龄期的发展规律,弯拉强度、劈裂强度与抗压强度的相关关系,抗压强度与空隙率的关系以及两种形式下的双对数疲劳方程;提出多孔混凝土弯拉弹性模量与弯拉强度,以及抗压弹性模量与轴心抗压强度的关系;得出多孔混凝土的温缩系数和干缩系数。
As the primary layer of pavement, porous concrete should have good physical and mechanical properties. The former mainly refers to its performance of drainage, shrinkage and erosion resistance, while the latter mainly refers to its strength and stress-strain characteristics. Through experiments and analysis, the effective porosity and total porosity of porous concrete and the relationship between permeability coefficient and porosity were obtained. The law of the development of the strength of concrete with age, the flexural strength, splitting strength and compressive strength The relationship between compressive strength and void fraction, and the logarithmic fatigue equation in two forms; the flexural modulus and flexural strength, as well as the relationship between compressive elastic modulus and axial compressive strength of porous concrete The shrinkage coefficient and shrinkage coefficient of porous concrete were obtained.