Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses high-crack-resistance concrete for buildings and a manufacturing method thereof, and relates to the technical field of concrete preparation. The high-crack-resistance concrete is prepared from the following production raw materials in parts by weight: 250 to 350 parts of cement, 150 to 200 parts of water, 100 to 150 parts of mineral admixture, 1 to 50 parts of fiber, 0.5 to 1.0 part of additive, 750 to 800 parts of fine sand and 750 to 780 parts of rubble. The preparation method comprises the following steps: firstly, weighing the P.O42.5 cement, the fine sand and the gravel; adding mixing tap water into the container, and uniformly stirring the mixture to form concrete slurry; then respectively adding polypropylene fibers, organic imitation steel fibers, polyacrylonitrile fibers or steel fibers, and stirring the mixture in a vertical stirrer; and then adding an additive, mixing and stirring the mixture, and finally molding the mixture. The invention relates to high-crack-resistance concrete for buildings and a manufacturing method thereof. Polyacrylonitrile can form a complex three-dimensional system and effectively obstruct channels for water loss, so that the loss of water is reduced or delayed, and the shrinkage stress of the capillary tube is reduced; therefore, the polyacrylonitrile fiber has an obvious inhibiting effect on the development of early plastic cracking of the concrete.
本发明公开了一种建筑用高抗裂混凝土及其制作方法，涉及混凝土制备技术领域，本发明包括如下重量的生产原料为：水泥250～350份、水150～200份、矿物掺合料100～150份、纤维1～50份、外加剂0.5～1.0份、细砂750～800份、粗石750～780份，首先称取P.O42.5水泥、细砂和岩碎石，向容器中添加拌合自来水，搅拌均匀，形成混凝土泥浆，然后分别添加聚丙烯纤维、有机仿钢纤维、聚丙烯腈纤维或钢纤维并将其置于立式搅拌器内搅拌，然后添加外加剂，使其混合搅拌，最后成型。本发明为一种建筑用高抗裂混凝土及其制作方法，聚丙烯腈可以形成复杂三维体系并有效阻隔水分散失的通道，减少或延缓水分的散失，减小毛细管收缩应力，因此聚丙烯腈纤维对混凝土早期塑性开裂的发展有明显的抑制作用。
The invention discloses high-crack-resistance concrete for buildings and a manufacturing method thereof, and relates to the technical field of concrete preparation. The high-crack-resistance concrete is prepared from the following production raw materials in parts by weight: 250 to 350 parts of cement, 150 to 200 parts of water, 100 to 150 parts of mineral admixture, 1 to 50 parts of fiber, 0.5 to 1.0 part of additive, 750 to 800 parts of fine sand and 750 to 780 parts of rubble. The preparation method comprises the following steps: firstly, weighing the P.O42.5 cement, the fine sand and the gravel; adding mixing tap water into the container, and uniformly stirring the mixture to form concrete slurry; then respectively adding polypropylene fibers, organic imitation steel fibers, polyacrylonitrile fibers or steel fibers, and stirring the mixture in a vertical stirrer; and then adding an additive, mixing and stirring the mixture, and finally molding the mixture. The invention relates to high-crack-resistance concrete for buildings and a manufacturing method thereof. Polyacrylonitrile can form a complex three-dimensional system and effectively obstruct channels for water loss, so that the loss of water is reduced or delayed, and the shrinkage stress of the capillary tube is reduced; therefore, the polyacrylonitrile fiber has an obvious inhibiting effect on the development of early plastic cracking of the concrete.
本发明公开了一种建筑用高抗裂混凝土及其制作方法，涉及混凝土制备技术领域，本发明包括如下重量的生产原料为：水泥250～350份、水150～200份、矿物掺合料100～150份、纤维1～50份、外加剂0.5～1.0份、细砂750～800份、粗石750～780份，首先称取P.O42.5水泥、细砂和岩碎石，向容器中添加拌合自来水，搅拌均匀，形成混凝土泥浆，然后分别添加聚丙烯纤维、有机仿钢纤维、聚丙烯腈纤维或钢纤维并将其置于立式搅拌器内搅拌，然后添加外加剂，使其混合搅拌，最后成型。本发明为一种建筑用高抗裂混凝土及其制作方法，聚丙烯腈可以形成复杂三维体系并有效阻隔水分散失的通道，减少或延缓水分的散失，减小毛细管收缩应力，因此聚丙烯腈纤维对混凝土早期塑性开裂的发展有明显的抑制作用。
High-crack-resistance concrete for building and manufacturing method of high-crack-resistance concrete
一种建筑用高抗裂混凝土及其制作方法
26.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2024