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Nanometer cement grout and application thereof

A technology of cement slurry and slurry liquid, which is applied in the field of nano-cement slurry, which can solve the problems of poor adhesion performance, anchor bolt erosion, and poor anchor bolt protection effect, and achieve high adhesion performance, not easy to rust, and high protection effect.

Inactive Publication Date: 2014-08-27
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Nanometer cement grout and application thereof
  • Nanometer cement grout and application thereof
  • Nanometer cement grout and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The raw materials are ordinary Portland cement 15.1302kg, water 7.5651kg, non-hydrophilic nano-silica and UNF-5 naphthalene-based water reducing agent, mixed uniformly to obtain cement slurry.

Embodiment 2

[0038] The raw materials are ordinary Portland cement 15.1302kg, water 7.5651kg, 0.5% of the total mass of ordinary Portland cement and water, hydrophilic nano-silica, and no UNF-5 naphthalene-based water reducing agent, mixed uniformly to obtain cement Slurry.

Embodiment 3

[0040] The raw materials are ordinary Portland cement 15.1302kg, water 7.5651kg, hydrophilic nano-silica accounting for 1% of the total mass of ordinary Portland cement and water, and no UNF-5 naphthalene-based water-reducing agent. Mix uniformly to obtain cement Slurry.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
Inventor 沈宇鹏彭红尚刘建坤田亚护何永贵毛凌峰颜欣桐黄乐艺褚满帅王辉煌
Owner BEIJING JIAOTONG UNIV
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