Steel fiber self-compacting concrete and preparation method thereof, and prefabricated member

Abstract

The invention provides a steel fiber self-compacting concrete, wherein the water-binder ratio of the concrete is controlled to be 0.3-0.7. The concrete is prepared from, by weight, 1-5 parts of 3-20 mm short steel fiber, 0.5-3 parts of magnetic beads, 1-4 parts of non-metallic fiber, 23-27 parts of natural coarse aggregate, 20-22.5 parts of sand, 10-14 parts of cement, 1.5-3.5 parts of fly ash, 4-8 parts of water, and 0.001-0.160 part of water reducing agent. The obtained high performance self-compacting concrete not only has simple production processes, but also can meet requirements on compressive strength and tensile performance.

Description

technical field

[0001] The present application relates to the technical field of building materials, especially the technical field of novel self-compacting concrete, and specifically relates to a steel fiber self-compacting concrete and a preparation method and application of the steel fiber self-compacting concrete. Background technique

[0002] Self-compacting concrete (Self-Consolidating Concrete referred to as SCC) refers to the concrete that can flow and compact under its own gravity, even if there are dense steel bars, it can completely fill the formwork, obtain good homogeneity, and do not require additional vibration. The preparation of self-compacting concrete is generally through the selection and matching of admixtures, cementing materials, coarse and fine aggregates, and a reasonable mix ratio design, so that the yield stress of the concrete is reduced enough to be overcome by the shear stress due to its own weight, and the fluidity of the concrete is increased. ...

Images