Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Design method for mixing proportion of self-compacting concrete mixture
The present invention belongs to the technical field of concrete construction and particularly relates to a design method for a mixing proportion of a self-compacting concrete mixture. The method comprises the steps of: determining a performance design target; determining mixing strength and a water-binder ratio; determining densest gradation (or a sand rate) of aggregates and void ratios of different packing states; determining the usage amount of binding materials and mixing water; determining the usage amount of the aggregates; determining the usage amount of additives; determining the actual adding amount of the mixing water; and the like. According to the method provided by the present invention, aimed at blindness of material selection during self-compacting concrete mixing proportion design in the prior art, based on a fundamental theory of particulate dense packing and a composition rule of reaching a densest packing state of solid particulate materials with different particulate diameters, a mixing proportion of different materials is determined by an actually measured densest packing state, and relationships are established between the material mixing proportions corresponding to different densest packing states and expected self-compacting performance grades of the mixture, so that the design method used for the mixing proportion of the self-compacting high-performance concrete mixture and based on a use performance as a target is constructed.
Design method for mixing proportion of self-compacting concrete mixture
The present invention belongs to the technical field of concrete construction and particularly relates to a design method for a mixing proportion of a self-compacting concrete mixture. The method comprises the steps of: determining a performance design target; determining mixing strength and a water-binder ratio; determining densest gradation (or a sand rate) of aggregates and void ratios of different packing states; determining the usage amount of binding materials and mixing water; determining the usage amount of the aggregates; determining the usage amount of additives; determining the actual adding amount of the mixing water; and the like. According to the method provided by the present invention, aimed at blindness of material selection during self-compacting concrete mixing proportion design in the prior art, based on a fundamental theory of particulate dense packing and a composition rule of reaching a densest packing state of solid particulate materials with different particulate diameters, a mixing proportion of different materials is determined by an actually measured densest packing state, and relationships are established between the material mixing proportions corresponding to different densest packing states and expected self-compacting performance grades of the mixture, so that the design method used for the mixing proportion of the self-compacting high-performance concrete mixture and based on a use performance as a target is constructed.
Design method for mixing proportion of self-compacting concrete mixture
TANG JIYU (Autor:in) / GAO DANYING (Autor:in) / ZHAO JUN (Autor:in) / CHEN GANG (Autor:in) / CHEN RUILONG (Autor:in) / XU JUNJUAN (Autor:in) / JIN XING (Autor:in) / CUI LAIHAO (Autor:in)
06.01.2016
Patent
Elektronische Ressource
Englisch
Self-compacting concrete mix proportion design method
| Europäisches Patentamt | 2022
Examination of Mixing Proportion in Self-Compacting Gangue-Based Pavement Concrete
| DOAJ | 2022
Novel steel slag self-compacting concrete mix proportion design method
| Europäisches Patentamt | 2020
Machine-made sand self-compacting concrete mix proportion quantitative design method
| Europäisches Patentamt | 2023