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High-bonding corrosion-resistant concrete interface treating agent and application thereof

An interface treatment agent and anti-corrosion technology, which is used in the field of concrete interface treatment agent and high-bond anti-corrosion concrete interface treatment agent, which can solve the problem of neglecting the bonding durability of the interface agent, the early shrinkage of the inorganic interface agent, and the organic interface agent. Complex operation and other problems, to achieve the effect of improving interface compactness, improving corrosion resistance, and reducing construction difficulty

Active Publication Date: 2017-05-31
广西壮族自治区水利科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above methods have improved the bonding strength of new and old concrete to varying degrees, there are disadvantages: the inorganic interface agent has a large early shrinkage, low early strength, and poor durability; the organic interface agent is complicated to operate, has a large environmental impact, and is expensive , the cost of popularization and application is high; the organic modified interface agent only improves its bonding performance, ignoring the bonding durability of the interface agent, and is not suitable for repairing concrete structures in coastal corrosive environments

Method used

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  • High-bonding corrosion-resistant concrete interface treating agent and application thereof

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Effect test

Embodiment 1

[0029] A high-bonding anti-corrosion concrete interface treatment agent, made of the following raw materials by weight: 80.88% of ultra-fine particle mineral admixtures (including 60% of fly ash and 40% of silica fume), 0.02% of fibers ( polypropylene fiber), chemical admixture 16.1% (containing 3.6% polycarboxylate water reducer and 96.4% calcium sulfoaluminate expansion agent), activator 3% (containing 70% nano-sodium silicate and 30% nano-sulfuric acid sodium). Preparation method: Prepare materials in the ratio of high-bonding and anti-corrosion concrete interface treatment agent: cement: water = 1:2:1.2, and mix to make high-bonding and anti-corrosion concrete interface treatment cement slurry.

Embodiment 2

[0031] A high-bonding anti-corrosion concrete interface treatment agent, made of the following raw materials by weight: 75.88% of superfine mineral admixtures (including 60% fly ash and 40% slag), 0.02% fiber (polymer propylene fiber), chemical admixture 16.1% (containing 3.6% polycarboxylate water reducer and 96.4% calcium sulfoaluminate expansion agent), activator 3% (containing 70% nano-sodium silicate and 30% nano-sodium sulfate ). Preparation method: Prepare materials in the ratio of high-bonding and anti-corrosion concrete interface treatment agent: cement: water = 1:2:1.2, and mix to make high-bonding and anti-corrosion concrete interface treatment cement slurry.

Embodiment 3

[0033] A high-bonding anti-corrosion concrete interface treatment agent, made of the following raw materials: 75.88% of ultra-fine particle mineral admixture (including 60% of fly ash and 40% of metakaolin), 0.02% of fiber ( polypropylene fiber), chemical admixture 16.1% (containing 3.6% polycarboxylate water reducer and 96.4% calcium sulfoaluminate expansion agent), activator 8% (containing 70% nano-sodium silicate and 20% nano-sulfuric acid sodium and 10% nano caustic soda). Preparation method: Prepare materials in the ratio of high-bonding and anti-corrosion concrete interface treatment agent: cement: water = 1:2:1.2, and mix to make high-bonding and anti-corrosion concrete interface treatment cement slurry.

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Abstract

The present invention discloses a high-bonding corrosion-resistant concrete interface treating agent and application thereof. The high-bonding corrosion-resistant concrete interface treating agent comprises following raw materials in parts by weight: 0.02-0.1 part of fibers, 60-93 parts of a superfine particle type active mineral admixture, 5-30 parts of a chemical additive, and 2-10 parts of a nanoscale reactive activator. The interface treating agent has super-high bonding force, can obviously increase the bonding force at new and old concrete interfaces, obviously enhance corrosion resistance after bonding of new and old concrete, effectively reduce disease engineering safety hidden danger, improve concrete structure safety, ensure structural integrity, prolong engineering service life, and save engineering maintenance cost, and has the relatively good economic benefit, social benefit and ecological benefit.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a concrete interface treatment agent, in particular to a high-bonding and anti-corrosion concrete interface treatment agent and its application. Background technique [0002] Concrete structures in coastal areas are affected by external factors such as sea salt erosion, steel bar corrosion, water wave impact, freeze-thaw damage, etc. Most coastal hydraulic structures (tidal gates, bridge gates, aqueducts, seawalls) operate for 30 to 40 hours. Years, and some with even shorter service life have basically lost the design function, so it is necessary to strengthen the coastal concrete structure. Concrete interface treatment agent is the transition layer between new and old concrete, which can effectively improve the bonding microstructure of new and old concrete, increase the bond strength, and ensure the integrity of new and old concrete. Therefore, it is widely used in con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/14C04B28/00C04B41/65C04B111/20
CPCC04B28/00C04B40/0039C04B41/5014C04B41/65C04B2111/20C04B18/08C04B18/146C04B16/0633C04B2103/302C04B22/142C04B22/08C04B22/147C04B14/041C04B22/062C04B41/50C04B41/4596C04B41/48
Inventor 陈建国孙桂山郭晋川陈国庆刘鲁强彭华娟周立新王忠民陈树亮李达春曾宏杨建坤满志强黄小兵梁晓宁韦美富
Owner 广西壮族自治区水利科学研究院