High-compactness and ultrahigh-strength cement-based composite material for financial equipment in bank

Abstract

The invention discloses a high-compactness and ultrahigh-strength cement-based composite material for financial equipment in a bank. The composite material is prepared by uniformly mixing microfine cement, silicon ash, ultrahigh-strength basalt sand, high-efficiency water reducing agent, copper-plated steel fiber and water according to certain ratio, and carrying out standard curing, wherein the weight ratio of all the components in the cemented-based composite material relative to the microfine cement is as follows: the microfine cement is 1, the silicon ash is 0.15-0.25, the ultrahigh-strength basalt sand is 1.2-1.8, the high-efficiency water reducing agent is 0.005-0.010, the copper-plated steel fiber is 0.40-0.60 and water is 0.19-0.25. The compressive strength of the prepared composite material is more than 180MPa.

Description

technical field [0001] The invention belongs to the technical field of bank financial equipment manufacturing, and specifically relates to a novel steel fiber reinforced cement-based composite material with ultra-high strength, ultra-high toughness, high density and high protection level. Background technique [0002] In the early 1990s, Ultra High Performance Cementitious Composites (UHPCC for short) was developed due to its ultra-high strength, ultra-high toughness, ultra-high resistance to deformation and cracking, and ultra-high durability and Features such as ultra-long service life have become high-end research hotspots in the international composite materials industry, and its application fields are gradually expanding. Traditional banking and financial equipment use special steel or metal as the main raw material. The disadvantage of metal materials is poor flame cutting performance and high cost. Therefore, UHPCC has been used in the world to improve the comprehens...

AI Technical Summary

Problems solved by technology

The compressive strength of RPC materials can be as high as 200-800MPa, but its preparation process is complex, requiring pressure molding, high-temperature steam curing or high-temperature dry heat curing, etc., which is not suitable for large-scale applications

[0004] At present, UHPCC used in the field of banking and financial equipment abroad has been industrialized, but its core technology is kept secret, especially UHPCC with high protection level (such as level 4 protection in line with the EU EN-1143 standard), and there is no domestic application precedent.