Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hybrid fiber high-ductility cement-based composite material prepared from reclaimed sand and preparation method of hybrid fiber high-ductility cement-based composite material
The invention belongs to the field of resource reutilization in building materials, and particularly relates to a hybrid fiber high-ductility cement-based composite material prepared from reclaimed sand and a method. The raw materials comprise cement, reclaimed sand, natural sand, fly ash, silica fume, polyvinyl alcohol fiber, basalt fiber, cellulose, a water reducing agent and water. According to the invention, the waste concrete crushed reclaimed sand is applied to the high-ductility cement-based composite material, and the improvement of the density of the matrix by the self-cementation effect of the reclaimed sand is promoted by adjusting the replacement rate of the reclaimed sand to the natural sand, so that the multi-cracking capability of the matrix is improved. In addition, the design that the polyvinyl alcohol fibers and the basalt fibers are mixed is adopted, so that the fiber cost in the raw materials is remarkably reduced while the stretching and extension characteristics are guaranteed. The problem of resource shortage of natural sand can be relieved.
本发明属于建筑材料中的资源再利用领域，具体涉及一种用再生砂制备的混杂纤维高延性水泥基复合材料及方法；原料为水泥，再生砂，天然砂，粉煤灰，硅灰，聚乙烯醇纤维，玄武岩纤维，纤维素，减水剂，水。本发明将废弃混凝土破碎再生砂应用在高延性水泥基复合材料中，通过调节再生砂的对天然砂的取代率，促进了再生砂的自胶结作用对基体致密度的改善，从而提升了基体多重开裂能力。此外，采用了聚乙烯醇纤维与玄武岩纤维混掺的设计，在保证拉伸延展特性的同时，显著降低了原材料中的纤维成本。本发明并有助于缓解天然砂的资源紧缺问题。
Hybrid fiber high-ductility cement-based composite material prepared from reclaimed sand and preparation method of hybrid fiber high-ductility cement-based composite material
The invention belongs to the field of resource reutilization in building materials, and particularly relates to a hybrid fiber high-ductility cement-based composite material prepared from reclaimed sand and a method. The raw materials comprise cement, reclaimed sand, natural sand, fly ash, silica fume, polyvinyl alcohol fiber, basalt fiber, cellulose, a water reducing agent and water. According to the invention, the waste concrete crushed reclaimed sand is applied to the high-ductility cement-based composite material, and the improvement of the density of the matrix by the self-cementation effect of the reclaimed sand is promoted by adjusting the replacement rate of the reclaimed sand to the natural sand, so that the multi-cracking capability of the matrix is improved. In addition, the design that the polyvinyl alcohol fibers and the basalt fibers are mixed is adopted, so that the fiber cost in the raw materials is remarkably reduced while the stretching and extension characteristics are guaranteed. The problem of resource shortage of natural sand can be relieved.
本发明属于建筑材料中的资源再利用领域，具体涉及一种用再生砂制备的混杂纤维高延性水泥基复合材料及方法；原料为水泥，再生砂，天然砂，粉煤灰，硅灰，聚乙烯醇纤维，玄武岩纤维，纤维素，减水剂，水。本发明将废弃混凝土破碎再生砂应用在高延性水泥基复合材料中，通过调节再生砂的对天然砂的取代率，促进了再生砂的自胶结作用对基体致密度的改善，从而提升了基体多重开裂能力。此外，采用了聚乙烯醇纤维与玄武岩纤维混掺的设计，在保证拉伸延展特性的同时，显著降低了原材料中的纤维成本。本发明并有助于缓解天然砂的资源紧缺问题。
Hybrid fiber high-ductility cement-based composite material prepared from reclaimed sand and preparation method of hybrid fiber high-ductility cement-based composite material
用再生砂制备的混杂纤维高延性水泥基复合材料及制备方法
WANG XINJIE (Autor:in) / WU YINJIA (Autor:in) / ZHU PINGHUA (Autor:in) / CHEN CHUNHONG (Autor:in) / YANG LEI (Autor:in) / LIU HUI (Autor:in) / YAN XIANCUI (Autor:in)
05.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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