Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fiber concrete toughening design method
The invention discloses a fiber concrete toughening design method, and belongs to the technical field of concrete. According to the method, the passive control characteristic of fibers on the concrete crack propagation process in traditional fiber concrete is changed, from the source of composite material design, a composite cementing material matrix with ultrahigh ductility is designed firstly, then aggregate is combined, and on the basis of a specific matrix and aggregate parameter combination, the composite cementing material with ultrahigh ductility is prepared. And in the external loading process of the composite material, mesoscopic multi-crack cracking and strain hardening behaviors are developed among aggregate particles. According to the fiber concrete prepared through the method, brittle damage in the material is actively dispersed, crack instability expansion caused by weak interface bonding between aggregate and a matrix is avoided, and compared with a traditional fiber concrete design method, the design method has the advantages that the structure is simple, and the cost is low. According to the method disclosed by the invention, the association among the material components, the microstructure and the macromechanical response is more accurately constructed, and the toughness of the material is more efficiently improved.
本发明公开了一种纤维混凝土增韧设计方法，属于混凝土技术领域。本发明方法改变了传统纤维混凝土中，纤维对混凝土裂缝扩展过程的被动控制特征，从复合材料设计的源头出发，首先设计出具有超高延性的复合胶凝材料基体，其次结合骨料，在特定基体与骨料参数组合的基础上，使复合材料在外部加载过程中，于骨料颗粒之间发展出介观多缝开裂与应变硬化行为。由此方法制备的纤维混凝土，主动分散了材料内部的脆性损伤破坏，且避免了由骨料与基体间的薄弱界面粘结所引起的裂缝失稳扩展，相比于传统纤维混凝土设计方法而言，本发明更为准确地构建了材料成分、微观构造、与宏观力学响应之间的关联，且更为高效地提升了材料的韧性。
Fiber concrete toughening design method
The invention discloses a fiber concrete toughening design method, and belongs to the technical field of concrete. According to the method, the passive control characteristic of fibers on the concrete crack propagation process in traditional fiber concrete is changed, from the source of composite material design, a composite cementing material matrix with ultrahigh ductility is designed firstly, then aggregate is combined, and on the basis of a specific matrix and aggregate parameter combination, the composite cementing material with ultrahigh ductility is prepared. And in the external loading process of the composite material, mesoscopic multi-crack cracking and strain hardening behaviors are developed among aggregate particles. According to the fiber concrete prepared through the method, brittle damage in the material is actively dispersed, crack instability expansion caused by weak interface bonding between aggregate and a matrix is avoided, and compared with a traditional fiber concrete design method, the design method has the advantages that the structure is simple, and the cost is low. According to the method disclosed by the invention, the association among the material components, the microstructure and the macromechanical response is more accurately constructed, and the toughness of the material is more efficiently improved.
本发明公开了一种纤维混凝土增韧设计方法，属于混凝土技术领域。本发明方法改变了传统纤维混凝土中，纤维对混凝土裂缝扩展过程的被动控制特征，从复合材料设计的源头出发，首先设计出具有超高延性的复合胶凝材料基体，其次结合骨料，在特定基体与骨料参数组合的基础上，使复合材料在外部加载过程中，于骨料颗粒之间发展出介观多缝开裂与应变硬化行为。由此方法制备的纤维混凝土，主动分散了材料内部的脆性损伤破坏，且避免了由骨料与基体间的薄弱界面粘结所引起的裂缝失稳扩展，相比于传统纤维混凝土设计方法而言，本发明更为准确地构建了材料成分、微观构造、与宏观力学响应之间的关联，且更为高效地提升了材料的韧性。
Fiber concrete toughening design method
纤维混凝土增韧设计方法
ZHANG DUO (Autor:in) / LI JUNSHENG (Autor:in)
23.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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