Resin-coated inorganic nonmetal fiber composite bundle reinforced and toughened cement-based material and preparation method thereof

Abstract

The invention discloses a resin-coated inorganic nonmetal fiber composite bundle reinforced and toughened cement-based material and a preparation method thereof, and relates to a cement-based material and a preparation method thereof. The invention aims to solve the problems that inorganic non-metal fibers are easy to break due to too small diameters, active silicon oxide in the inorganic non-metal fibers and alkali in cement are subjected to alkali-silicic acid reaction to cause pulverization and failure, and the like. Therefore, the problems that the inorganic non-metal fiber cannot fully exert the anti-impact effect and the reinforcing and toughening effect in the cement-based material and loses efficacy along with the increase of the service time are solved. The resin-coated inorganic nonmetal fiber composite bundle reinforced and toughened cement-based material is prepared from cement, water, fine aggregate, an additive and a resin-coated inorganic nonmetal fiber composite bundle. The cement-based material further comprises a mineral admixture and coarse aggregate. The impact toughness of the resin-coated inorganic non-metal fiber composite bundle reinforced and toughened cement-based material prepared by the invention is improved by more than 10 times compared with that of a cement-based material doped with non-coated resin.

Description

technical field [0001] The invention relates to a cement-based material and a preparation method thereof. Background technique [0002] The construction of transportation network should not only pay attention to its speed and length, but also attach great importance to the construction concept of high quality and high efficiency. The construction of high-quality comprehensive three-dimensional transportation network with intelligent transportation and green and sustainable transportation as the core goal has become a modern important tasks in the field of transportation. Therefore, the application of UHPC, an ultra-high-performance building material, in a wider range has become a research hotspot. [0003] In the application process of the airport pavement, due to the high load and impact load generated during the take-off and landing of the aircraft, it is easy to cause damage to the ordinary cement concrete pavement and cracks. Not only that, but snowmelting agents such ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the reasons that the diameter of the inorganic non-metallic fiber is too small and easy to be shattered, and the activated silica reacts with the alkali in the cement to cause powdering failure and other reasons, which lead to the failure of the inorganic non-metallic fiber in the cement-based material. In order to solve the problem that the toughening effect cannot be effectively exerted, a resin-coated inorganic non-metallic fiber composite bundle reinforced and toughened cement-based material and its preparation method are provided.

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