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Sulfate corrosion-resistance preservative for concrete

An anti-sulfate and anti-corrosion agent technology, which is applied in the field of concrete anti-sulfate corrosion anti-corrosion agent and concrete admixture, can solve the problems of complicated preparation and complicated preparation process, and achieve the improvement of anti-sulfate corrosion performance, simple production process, and reliable highly operable effect

Inactive Publication Date: 2010-12-15
QINGDAO HUADING BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Benzoic acid and boric acid include various forms of benzoic acid, and alkalis include various carbonates, hydroxides and sodium silicates, involving many types of raw materials and complicated preparation
In addition, in the preparation process of this patent, the organic matter needs to be preheated to 50°C, then the active ingredient and alkali are added, mixed and stirred until dissolved, and finally silica fume is added, which makes the preparation process complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A concrete anti-sulfate corrosion corrosion inhibitor, each component and its weight percentage content are as follows:

[0019] 1) Ultrafine ore powder: 80%; ultrafine ore powder is the industrial waste of iron and steel smelting in iron and steel factories. After being ground by a processing plant, it is made into a finished product of ultrafine ore powder, which does not need to be prepared in the form of oxides. The main components are calcium oxide, silicon oxide, aluminum oxide, and the specific surface area of ​​ultrafine mineral powder is ≥600m 2 / kg; the main components of ultra-fine mineral powder are proportioned by weight: 3-4.5 parts of calcium oxide; 0.5-1.5 parts of aluminum oxide; 2-4.5 parts of silicon oxide.

[0020] 2) Sulphoaluminate cement clinker: 10%; specific surface area ≥ 300m 2 / kg.

[0021] 3) Anhydrite: 10%; specific surface area of ​​anhydrite ≥ 300m 2 / kg.

[0022] The relevant performance indicators of the concrete anti-sulphate corro...

Embodiment 2

[0029] A concrete anti-sulfate corrosion corrosion inhibitor, each component and its weight percentage content are as follows:

[0030] 1) Ultrafine ore powder: 60%; ultrafine ore powder is the industrial waste of iron and steel smelting in iron and steel factories. After being ground by a processing plant, it is made into a finished product of ultrafine ore powder, which does not need to be prepared in the form of oxides. The main components are calcium oxide, silicon oxide, aluminum oxide, and the specific surface area of ​​ultrafine mineral powder is ≥600m 2 / kg; the main components of ultra-fine mineral powder are proportioned by weight: 3-4.5 parts of calcium oxide; 0.5-1.5 parts of aluminum oxide; 2-4.5 parts of silicon oxide.

[0031] 2) Sulphoaluminate cement clinker: 20%; specific surface area ≥ 300m 2 / kg;

[0032] 3) Anhydrite: 20%; specific surface area of ​​anhydrite ≥ 300m 2 / kg.

[0033] The relevant performance indicators of the concrete anti-sulphate corro...

Embodiment 3

[0040] A concrete anti-sulfate corrosion corrosion inhibitor, each component and its weight percentage content are as follows:

[0041] 1) Ultrafine ore powder: 40%; ultrafine ore powder is the industrial waste of iron and steel smelting in iron and steel factories. After being ground by the processing plant, it is made into ultrafine ore powder products, which do not need to be prepared in the form of oxides. The main components are calcium oxide, silicon oxide, aluminum oxide, and the specific surface area of ​​ultrafine mineral powder is ≥600m 2 / kg; the main components of ultra-fine mineral powder are proportioned by weight: 3-4.5 parts of calcium oxide; 0.5-1.5 parts of aluminum oxide; 2-4.5 parts of silicon oxide.

[0042] 2) Sulphoaluminate cement clinker: 40%; specific surface area ≥ 300m 2 / kg;

[0043] 3) Anhydrite: 20%; specific surface area of ​​anhydrite ≥ 300m 2 / kg.

[0044] The relevant performance indicators of the concrete anti-sulphate corrosion corrosio...

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Abstract

The invention provides a sulfate corrosion-resistance preservative for concrete, which is characterized by containing the following components of raw materials in percentage by weight: 15-80 percent of superfine mineral powder that is a by-product of smelting steel, contains calcium oxide, silicon oxide and alumina as the main components, and has the specific surface area of greater than or equalto 600m<2> / kg, 0-55 percent of cement clinker that contains anhydrous calcium sulphoaluminate and dicalcium silicate as the main components, and 0-30 percent of anhydrite. The compositions are simple, the process is simple and easy, and the antiseptic effect is obvious.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a concrete admixture, in particular to a concrete antisulphate corrosion corrosion inhibitor. Background technique [0002] In 1824, with the advent of Portland cement, people began to use concrete to build buildings. After nearly two hundred years of development, concrete has become the most widely used, largest and most important building structure material in the world today. With the application of concrete, the durability of concrete structures also arises. Many buildings have non-mechanical damage before reaching their service life, causing serious economic losses. In the destruction of concrete members, sulfate attack is one of the more important causes of destruction. [0003] my country has a vast sea area and thousands of kilometers of coastline, and large-scale construction is mainly concentrated in coastal areas. Buildings built on tidal flats and offshore...

Claims

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Application Information

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IPC IPC(8): C04B28/36C04B18/12C04B41/50
CPCY02W30/91
Inventor 薛山李秋义刘佳音黄蕾尹国利
Owner QINGDAO HUADING BUILDING MATERIAL
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