Nanometer cement grout and application thereof

Abstract

The invention belongs to the technical field of slope reinforcement engineering material, and in particular relates to a nanometer cement grout and application thereof. The nanometer cement grout is composed of the following components: normal silicate cement grout, hydrophilic nano-silicon dioxide accounting for 0.5-1.5% of the mass of the normal silicate cement grout, and UNF-5 type naphthalene water reducer accounting for 0.2-3% of the mass of the normal silicate cement grout. The nanometer cement grout provided by the invention is used for anchoring an anchor rod or an anchor cable, and has higher grip force to reinforcing steel bars than portland cement grout, and is more compact than the portland cement grout.

Description

Technical field [0001] The invention belongs to the technical field of slope reinforcement engineering materials, and particularly relates to a nano cement slurry and its use. Background technique [0002] At present, in the support of rock and soil slopes, ordinary cement grout is used for the anchoring of anchor rods (cables). But ordinary cement slurry has some disadvantages. First of all, ordinary cement slurry particles are relatively large, and the contact performance with the anchor rod (cable) is poor, and it is prone to cracking and peeling, so the holding force on the anchor rod (cable) is small. Secondly, the density of ordinary cement slurry is poor, and the protection of the anchor rod (cable) is poor, making the anchor rod (cable) prone to embroidering. In addition, in the slope reinforcement project, due to the poor adhesion between the contaminated bolt (cable) and ordinary cement slurry, the cement grout also reduces the holding effect of the anchor (cable). S...

AI Technical Summary

Problems solved by technology

However, ordinary cement grout has some disadvantages

First of all, the ordinary cement slurry has large particles, poor contact performance with the anchor (cable), and is prone to cracking and peeling, so it has a weak grip on the anchor (cable)

Secondly, the compactness of ordinary cement slurry is poor, and the protection effect on the anchor (cable) is poor, so that the anchor (cable) is prone to embroidering.

In addition, in the slope reinforcement project, due to the poor adhesion between the contaminated anchor (cable) and the ordinary cement grout, the gripping effect of the cement grout on the anchor (cable) is also reduced.

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