Black steel fiber reinforced concrete

Abstract

Black steel fiber reinforced concrete which can be rapidly solidified, has high strength and good durability, and is not easy to crack and damage is provided by the invention. The black steel fiber reinforced concrete is prepared from the following raw materials in percentage by weight: 20%-30% of sulphoaluminate cement, 30%-40% of aggregate, 30%-40% of quartz sand, 1%-2% of steel fibers, 0.1%-0.3% of PP fibers, 0.2%-0.5% of carbon black, 0.1%-0.3% of a retarder, 0.5%-1% of an expanding agent, 0.2%-0.5% of an air entraining agent, 0.08%-0.12% of a water reducing agent and 0.5%-1% of a coagulant.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a black steel fiber concrete capable of rapid solidification and high strength. Background technique [0002] Urban roads are generally paved with asphalt concrete, but as time goes by, under the action of external forces such as vehicle load rolling and rain erosion, a series of potholes and surface cracks will appear, such as loose surface layers and cracks. Delamination and other road diseases. The damage of these roads not only reduces the service capacity of the roads rapidly, but also affects the normal passage of urban traffic. If it occurs on some high-grade roads such as expressways, it will cause a series of traffic accidents. Therefore, a series of road diseases such as looseness, potholes, and surface peeling on these roads need to be repaired in time. [0003] The inspection wells and their surroundings on urban roads often suffer from various forms of damage, suc...

AI Technical Summary

Problems solved by technology

When repairing the road surface, it is necessary to use heavy-duty machinery for rolling. In the repairing area, the repair area is generally small, and there are problems of unreliable rolling and insufficient asphalt adhesion. Especially after rain, it is easy to be rolled by vehicles and quickly crushed.