Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Surface pervious concrete mix proportion design method
The invention relates to a method for designing the mix proportion of surface pervious concrete. The method comprises the following steps: selecting proper aggregates, cementing materials and additives; determining the water-binder ratio of the binder slurry; calculating the density of the cementing slurry; determining the designed theoretical porosity, and determining the cementing slurry required by the unilateral pervious concrete under a certain initial porosity according to a volumetric method; forming the test piece under different gradients of compaction strength; curing the surface pervious concrete test piece under standard conditions, and testing the porosity, the permeability coefficient and the compressive strength of the surface pervious concrete test piece at a specified age; determining a linear relation between the compaction strength and the construction compaction strength, and fitting a relation curve between the compaction strength of the surface pervious concrete per unit mass and the porosity, the permeability coefficient and the compressive strength; and determining the mix proportion and the compaction strength of the pervious concrete. The prepared surface-layer wear-resistant pervious concrete is controllable in effective void ratio, high in compressive strength, high in surface wear resistance and small in deviation between construction performance and laboratory fitting performance, and can guide compaction equipment model selection (selecting proper compaction output power) in actual construction to a certain extent.
本发明涉及表层透水混凝土配合比设计方法，选取合适的骨料、胶结料和外加剂；确定胶结料浆体水胶比；计算胶结料浆体的密度；确定设计理论孔隙率，根据体积法确定某一初始孔隙率下单方透水混凝土所需胶结料浆体；在不同梯度的击实强度下成型试件；在标准条件下养护表层透水混凝土试件，并在规定龄期进行测试其孔隙率、透水系数和抗压强度；确定击实强度与施工压实强度之间的线性关系，拟合出表层透水混凝土单位质量压实强度与孔隙率、透水系数和抗压强度之间的关系曲线；确定透水混凝土的配合比和压实强度。制备出的表层耐磨透水混凝土有效空隙率可控，抗压强度高，表面耐磨性高，施工性能与试验室试配性能偏差小，同时，一定程度能够上指导实际施工时压实设备选型(选取适当的压实输出功率)。
Surface pervious concrete mix proportion design method
The invention relates to a method for designing the mix proportion of surface pervious concrete. The method comprises the following steps: selecting proper aggregates, cementing materials and additives; determining the water-binder ratio of the binder slurry; calculating the density of the cementing slurry; determining the designed theoretical porosity, and determining the cementing slurry required by the unilateral pervious concrete under a certain initial porosity according to a volumetric method; forming the test piece under different gradients of compaction strength; curing the surface pervious concrete test piece under standard conditions, and testing the porosity, the permeability coefficient and the compressive strength of the surface pervious concrete test piece at a specified age; determining a linear relation between the compaction strength and the construction compaction strength, and fitting a relation curve between the compaction strength of the surface pervious concrete per unit mass and the porosity, the permeability coefficient and the compressive strength; and determining the mix proportion and the compaction strength of the pervious concrete. The prepared surface-layer wear-resistant pervious concrete is controllable in effective void ratio, high in compressive strength, high in surface wear resistance and small in deviation between construction performance and laboratory fitting performance, and can guide compaction equipment model selection (selecting proper compaction output power) in actual construction to a certain extent.
本发明涉及表层透水混凝土配合比设计方法，选取合适的骨料、胶结料和外加剂；确定胶结料浆体水胶比；计算胶结料浆体的密度；确定设计理论孔隙率，根据体积法确定某一初始孔隙率下单方透水混凝土所需胶结料浆体；在不同梯度的击实强度下成型试件；在标准条件下养护表层透水混凝土试件，并在规定龄期进行测试其孔隙率、透水系数和抗压强度；确定击实强度与施工压实强度之间的线性关系，拟合出表层透水混凝土单位质量压实强度与孔隙率、透水系数和抗压强度之间的关系曲线；确定透水混凝土的配合比和压实强度。制备出的表层耐磨透水混凝土有效空隙率可控，抗压强度高，表面耐磨性高，施工性能与试验室试配性能偏差小，同时，一定程度能够上指导实际施工时压实设备选型(选取适当的压实输出功率)。
Surface pervious concrete mix proportion design method
一种表层透水混凝土配合比设计方法
LIU DONG (Autor:in) / WANG JUN (Autor:in) / ZHANG YUAN (Autor:in) / LI XIAOHUAN (Autor:in) / WANG ZIJIE (Autor:in) / NIU ZIDONG (Autor:in) / ZHANG ZHUOXIANG (Autor:in) / YUAN WENTAO (Autor:in) / ZHANG WUZONG (Autor:in) / LIU XIA (Autor:in)
27.06.2023
Patent
Elektronische Ressource
Chinesisch
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