CN111003955B - Corrosion-resistant cement for marine environment and preparation method thereof - Google Patents

Corrosion-resistant cement for marine environment and preparation method thereof Download PDF

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CN111003955B
CN111003955B CN202010007719.3A CN202010007719A CN111003955B CN 111003955 B CN111003955 B CN 111003955B CN 202010007719 A CN202010007719 A CN 202010007719A CN 111003955 B CN111003955 B CN 111003955B
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powder
oxide
corrosion
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CN111003955A (en
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明阳
陈平
李玲
潘格林
陈新
甘国兴
刘荣进
陈宣东
赵艳荣
韦家崭
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Guilin Xinnan Technology Co ltd
Guilin University of Technology
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Guilin University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/22—Iron ore cements ; Iron rich cements, e.g. Ferrari cements, Kühl cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention relates to corrosion-resistant cement for marine environment and a preparation method thereof, wherein the corrosion-resistant cement is prepared from the following raw materials in parts by weight: 600 parts of clinker powder, 50-80 parts of silicon powder, 200 parts of steel slag powder, 200 parts of iron ore sand powder, 40-60 parts of phosphogypsum powder, 1-2 parts of silicon nitride, 0.5-1 part of nano aluminum oxide, 5-10 parts of regulator, 5-7 parts of water reducer and 1-5 parts of nano cellulose; the obtained corrosion-resistant cement has low water demand, good mechanical property and excellent durability; the marine environmental engineering paint has high crack resistance, chloride ion permeability resistance and sulfate erosion resistance, and can be well used for marine environmental engineering of dry-wet and salt-mist coupling; the corrosion-resistant cement can effectively prolong the service life of concrete engineering in marine environment, and has higher engineering application value.

Description

Corrosion-resistant cement for marine environment and preparation method thereof
Technical Field
The invention relates to the technical field of building materials, in particular to corrosion-resistant cement for marine environment and a preparation method thereof.
Background
With the rapid development of national economy and the proposal of the strategy of ocean forcing, a plurality of infrastructure construction projects go from offshore to open sea or even deep sea, and the requirements of the projects on the erosion resistance and the durability of concrete materials and structures are higher and higher. Ordinary cement cannot resist the long-time soaking, erosion and dry-wet cycle action of seawater, and concrete prepared by the ordinary cement cannot completely meet the requirement of high durability of ocean engineering. In order to improve the durability of the ocean engineering concrete structure and prolong the service life of the infrastructure, if the composite cement with the seawater corrosion resistance greatly improved can be prepared by adopting common portland cement clinker through a cement preparation technology, the foundation material guarantee is provided for the high-durability construction of the ocean engineering, and the market demand and the prospect of the novel corrosion-resistant cement are huge.
Disclosure of Invention
The invention aims to provide corrosion-resistant cement for marine environment and a preparation method thereof, and aims to solve the problem that ordinary cement proposed in the background art cannot resist the long-time soaking, corrosion and dry-wet cycle action of seawater.
In order to achieve the purpose, the invention provides the following technical scheme:
the corrosion-resistant cement for the marine environment is prepared from the following raw materials in parts by weight: 600 parts of clinker powder, 50-80 parts of silicon powder, 200 parts of steel slag powder, 200 parts of iron ore sand powder, 40-60 parts of phosphogypsum powder, 1-2 parts of silicon nitride, 0.5-1 part of nano aluminum oxide, 5-10 parts of regulator, 5-7 parts of water reducer and 1-5 parts of nano cellulose.
Preferably, the corrosion-resistant cement consists of the following raw materials in parts by weight: 580 parts of clinker powder 520, 55-75 parts of silicon powder, 185 parts of steel slag powder 165, 190 parts of iron ore sand powder 170, 45-55 parts of phosphogypsum powder, 1.4-1.8 parts of silicon nitride, 0.7-0.8 part of nano aluminum oxide, 6-8 parts of regulator, 5.5-6.5 parts of water reducer and 2-4 parts of nano cellulose.
Preferably, the corrosion-resistant cement consists of the following raw materials in parts by weight: 530 parts of clinker powder, 60 parts of silicon powder, 180 parts of steel slag powder, 180 parts of iron ore sand powder, 50 parts of phosphogypsum powder, 1.7 parts of silicon nitride, 0.8 part of nano aluminum oxide, 8 parts of regulator, 6 parts of water reducer and 3.5 parts of nano cellulose.
Further, the specific surface area of the clinker powder is 380-420m2Kg, chemical composition: 62-67% of calcium oxide (CaO), and silicon dioxide (SiO)2) 20-24% of aluminum trioxide (Al)2O3) 4-7% of ferric oxide (Fe)2O3) 2.5-6%, magnesium oxide (MgO) 0.5-1.5%, titanium dioxide (TiO)2) 0.01-0.6% of sulfur trioxide (SO)3) 2-3% of potassium oxide (K)2O) 0.01-0.09%, sodium oxide (Na)2O)0.01-0.1％。
Further, the silicon powder is nano-micron micro powder, SiO2The content is not less than 98 percent, and the average grain diameter is 0.05-0.5 mu m.
Further, the specific surface area of the steel slag powder is 700-800m2The superfine powder per kg comprises the following chemical components: silicon dioxide (SiO)2) 28-30% of aluminum trioxide (Al)2O3) 6-8% of ferric oxide (Fe)2O3)11-14 percent of calcium oxide (CaO), 30-35 percent of magnesium oxide (MgO), 6-7 percent of sulfur trioxide (SO)3) 0-0.05%, potassium oxide (K)2O) 0-0.05%, sodium oxide (Na)2O)0 to 0.06 percent, and the balance being other impurities.
Further, the specific surface area of the iron ore sand powder is 700-750m2Ultrafine powder per kg, chemical composition: silicon dioxide (SiO)2) 50-60% of aluminum trioxide (Al)2O3) 10-16% of ferric oxide (Fe)2O3)5-7 percent of calcium oxide (CaO), 4-6 percent of magnesium oxide (MgO), 5-6 percent of sulfur trioxide (SO)3) 0-0.05%, potassium oxide (K)2O) 0.05-0.08%, sodium oxide (Na)2O) 0.05-0.2%, and the balance being other impurities.
Further, the specific surface area of the phosphogypsum powder is 300-350m2Kg, chemical composition: calcium sulfate (CaSO)4) 70-90% of silicon dioxide (SiO)2) 5-10% of phosphorus pentoxide (P)2O5)2-4％Aluminum trioxide (Al)2O3) 1-2% and magnesium oxide (MgO) 0.5-0.8%.
Further, the purity of the silicon nitride is not lower than 98%, the particle size of the nano-alumina is 400-600nm, the diameter of the nano-cellulose is 30-60nm, and the length of the nano-cellulose is 500-1000 nm.
Further, the regulator consists of the following raw materials in parts by weight: 10-15 parts of sulfonated melamine formaldehyde resin, 10-15 parts of acrylic glycidyl ether, 10-20 parts of polymeric aluminum ferric silicate and 20-30 parts of phosphite ester.
Further, the water reducing agent is a powder water reducing agent and is composed of the following raw materials in parts by weight: 3-8 parts of polyethylene glycol monomethyl ether methacrylate, 2-5 parts of calcium lignosulfonate and 10-15 parts of melamine.
The invention also provides a preparation method of the corrosion-resistant cement, which comprises the following steps:
s1: adding 1-2 parts of silicon nitride, 0.5-1 part of nano aluminum oxide, 5-10 parts of regulator, 5-7 parts of water reducer and 1-5 parts of nano cellulose into a homogenizer A for homogenizing and stirring to obtain a mixture A; the rotation speed of the homogenizer is 2000-3000r/min, and the uniform stirring is carried out for 3-5 min;
s2: adding 50-80 parts of silicon powder, 200 parts of steel slag powder 150-; the rotation speed of the homogenizer is 100-;
s3: adding the mixture A obtained in the step S1 into a homogenizer B, homogenizing and stirring the mixture B obtained in the step S2 to obtain a mixture C; the rotation speed of the homogenizer is 200-300r/min, and the uniform stirring is carried out for 5-8 min;
s4: adding 500-600 parts of the clinker powder into a mixture C obtained by a homogenizer B and S3 for homogenizing and stirring, wherein the rotating speed of the homogenizer is 100-150r/min, and the homogenizing and stirring is carried out for 2-3 min; and obtaining the corrosion-resistant cement. Compared with the prior art, the invention has the beneficial effects that:
1. the invention can utilize industrial solid wastes such as steel slag, iron ore slag, phosphogypsum and the like on a large scale, greatly reduce the manufacturing cost of the corrosion-resistant cement, reduce the environmental pollution, and is economic and environment-friendly.
2. Clinker powder, steel slag powder, iron slag powder, phosphogypsum powder, nano aluminum oxide, nano cellulose and the like with specific particle sizes and components are added in the preparation process, and the powder is in a compact stacking state through reasonable particle size matching; in addition, the added nano aluminum oxide and nano cellulose have large specific surface area and have good modification effect on a cementing material system. The prepared cement has a more compact structure and more uniform hydration products, the chloride ion permeability resistance, seawater erosion resistance and sulfate erosion resistance of the matrix are greatly improved, the cement can be well suitable for dry-wet and salt-mist coupled marine environmental engineering, and the service life of the marine environmental concrete engineering can be effectively prolonged.
3. The preparation process of the corrosion-resistant cement is simple, the special corrosion-resistant cement clinker does not need to be calcined, only the ordinary portland cement clinker with certain fineness, the solid waste material and the additive need to be homogenized, the raw materials are cheap and easy to obtain, and the application value is high.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
The corrosion-resistant cement for the marine environment is prepared from the following raw materials in parts by weight: 500 parts of clinker powder, 50 parts of silicon powder, 150 parts of steel slag powder, 160 parts of iron ore sand powder, 40 parts of phosphogypsum powder, 1 part of silicon nitride, 0.5 part of nano aluminum oxide, 5 parts of regulator, 5 parts of water reducer and 1 part of nano cellulose.
The specific surface area of the clinker powder is 380-2Kg, chemical composition: 62-67% of calcium oxide (CaO), and silicon dioxide (SiO)2) 20-24% of aluminum trioxide (Al)2O3) 4-7% of ferric oxide (Fe)2O3) 2.5-6%, oxidizingMagnesium (MgO) 0.5-1.5%, titanium dioxide (TiO)2) 0.01-0.6% of sulfur trioxide (SO)3) 2-3% of potassium oxide (K)2O) 0.01-0.09%, sodium oxide (Na)2O)0.01-0.1％。
The silicon powder is nano-micron micro powder, SiO2The content is not less than 98 percent, and the average grain diameter is 0.05-0.5 mu m.
The specific surface area of the steel slag powder is 700-800m2The superfine powder per kg comprises the following chemical components: silicon dioxide (SiO)2) 28-30% of aluminum trioxide (Al)2O3) 6-8% of ferric oxide (Fe)2O3)11-14 percent of calcium oxide (CaO), 30-35 percent of magnesium oxide (MgO), 6-7 percent of sulfur trioxide (SO)3) 0-0.05%, potassium oxide (K)2O) 0-0.05%, sodium oxide (Na)2O)0 to 0.06 percent, and the balance being other impurities.
The specific surface area of the iron ore sand powder is 700-750m2Ultrafine powder per kg, chemical composition: silicon dioxide (SiO)2) 50-60% of aluminum trioxide (Al)2O3) 10-16% of ferric oxide (Fe)2O3)5-7 percent of calcium oxide (CaO), 4-6 percent of magnesium oxide (MgO), 5-6 percent of sulfur trioxide (SO)3) 0-0.05%, potassium oxide (K)2O) 0.05-0.08%, sodium oxide (Na)2O) 0.05-0.2%, and the balance being other impurities.
The specific surface area of the phosphogypsum powder is 300-350m2Kg, chemical composition: calcium sulfate (CaSO)4) 70-90% of silicon dioxide (SiO)2) 5-10% of phosphorus pentoxide (P)2O5) 2-4% of aluminum trioxide (Al)2O3) 1-2% and magnesium oxide (MgO) 0.5-0.8%.
The purity of the silicon nitride is not lower than 98 percent, the particle size of the nano-alumina is 400-600nm, the diameter of the nano-cellulose is 30-60nm, and the length of the nano-cellulose is 500-1000 nm.
The regulator consists of the following raw materials in parts by weight: 10 parts of sulfonated melamine formaldehyde resin, 10 parts of acrylic glycidyl ether, 10 parts of polymeric aluminum ferric silicate and 20 parts of phosphite ester.
The water reducing agent is a powder water reducing agent and is composed of the following raw materials in parts by weight: 3 parts of polyethylene glycol monomethyl ether methacrylate, 2 parts of calcium lignosulfonate and 10 parts of melamine.
Example 1 a method of preparing corrosion resistant cement, comprising the steps of: s1: adding 1 part of silicon nitride, 0.5 part of nano aluminum oxide, 5 parts of regulator, 5 parts of water reducer and 1 part of nano cellulose into a homogenizer A for homogenizing and stirring to obtain a mixture A; the rotation speed of the homogenizer is 2000-3000r/min, and the uniform stirring is carried out for 3-5 min;
s2: adding 50 parts of silicon powder, 150 parts of steel slag powder, 160 parts of iron ore sand powder and 40 parts of phosphogypsum powder into a homogenizer B for homogenizing and stirring to obtain a mixture B; the rotation speed of the homogenizer is 100-;
s3: adding the mixture A obtained in the step S1 into a homogenizer B, homogenizing and stirring the mixture B obtained in the step S2 to obtain a mixture C; the rotation speed of the homogenizer is 200-300r/min, and the uniform stirring is carried out for 5-8 min;
s4: adding 500 parts of the clinker powder into a mixture C obtained by a homogenizer B and S3 for homogenizing and stirring, wherein the rotating speed of the homogenizer is 100 and 150r/min, and uniformly stirring for 2-3 min; and obtaining the corrosion-resistant cement.
Example 2
The corrosion-resistant cement for the marine environment is prepared from the following raw materials in parts by weight: 530 parts of clinker powder, 60 parts of silicon powder, 180 parts of steel slag powder, 180 parts of iron ore sand powder, 50 parts of phosphogypsum powder, 1.7 parts of silicon nitride, 0.8 part of nano aluminum oxide, 8 parts of regulator, 6 parts of water reducer and 3.5 parts of nano cellulose.
The silicon powder is nano-micron micro powder, SiO2The content is not less than 98 percent, and the average grain diameter is 0.05-0.5 mu m.
The specific surface area of the steel slag powder is 700-800m2The superfine powder per kg comprises the following chemical components: silicon dioxide (SiO)2) 28-30% of aluminum trioxide (Al)2O3) 6-8% of ferric oxide (Fe)2O3)11-14 percent of calcium oxide (CaO), 30-35 percent of magnesium oxide (MgO), 6-7 percent of sulfur trioxide (SO)3) 0-0.05%, potassium oxide (K)2O) 0-0.05%, sodium oxide (Na)2O)0 to 0.06 percent, and the balance being other impurities.
The above-mentionedThe specific surface area of the iron ore sand powder is 700-750m2Ultrafine powder per kg, chemical composition: silicon dioxide (SiO)2) 50-60% of aluminum trioxide (Al)2O3) 10-16% of ferric oxide (Fe)2O3)5-7 percent of calcium oxide (CaO), 4-6 percent of magnesium oxide (MgO), 5-6 percent of sulfur trioxide (SO)3) 0-0.05%, potassium oxide (K)2O) 0.05-0.08%, sodium oxide (Na)2O) 0.05-0.2%, and the balance being other impurities.
The specific surface area of the phosphogypsum powder is 300-350m2Kg, chemical composition: calcium sulfate (CaSO)4) 70-90% of silicon dioxide (SiO)2) 5-10% of phosphorus pentoxide (P)2O5) 2-4% of aluminum trioxide (Al)2O3) 1-2% and magnesium oxide (MgO) 0.5-0.8%.
The purity of the silicon nitride is not lower than 98 percent, the particle size of the nano-alumina is 400-600nm, the diameter of the nano-cellulose is 30-60nm, and the length of the nano-cellulose is 500-1000 nm.
The regulator consists of the following raw materials in parts by weight: 13 parts of sulfonated melamine formaldehyde resin, 13 parts of acrylic glycidyl ether, 15 parts of polymeric aluminum ferric silicate and 25 parts of phosphite ester.
The water reducing agent is a powder water reducing agent and is composed of the following raw materials in parts by weight: 5 parts of polyethylene glycol monomethyl ether methacrylate, 3 parts of calcium lignosulfonate and 13 parts of melamine.
Example 2 a method of making corrosion resistant cement, comprising the steps of: s1: adding 1.7 parts of silicon nitride, 0.8 part of nano aluminum oxide, 8 parts of regulator, 6 parts of water reducing agent and 3.5 parts of nano cellulose into a homogenizer A for homogenizing and stirring to obtain a mixture A; the rotation speed of the homogenizer is 2000-3000r/min, and the uniform stirring is carried out for 3-5 min;
s2: adding 60 parts of silicon powder, 80 parts of steel slag powder, 180 parts of iron ore sand powder and 50 parts of phosphogypsum powder into a homogenizer B for homogenizing and stirring to obtain a mixture B; the rotation speed of the homogenizer is 100-;
s3: adding the mixture A obtained in the step S1 into a homogenizer B, homogenizing and stirring the mixture B obtained in the step S2 to obtain a mixture C; the rotation speed of the homogenizer is 200-300r/min, and the uniform stirring is carried out for 5-8 min;
s4: adding 530 parts of the clinker powder into a mixture C obtained by a homogenizer B and S3 for homogenizing and stirring, wherein the rotating speed of the homogenizer is 100 and 150r/min, and uniformly stirring for 2-3 min; and obtaining the corrosion-resistant cement.
Example 3
The corrosion-resistant cement for the marine environment is prepared from the following raw materials in parts by weight: 600 parts of clinker powder, 80 parts of silicon powder, 200 parts of steel slag powder, 200 parts of iron ore sand powder, 60 parts of phosphogypsum powder, 2 parts of silicon nitride, 1 part of nano aluminum oxide, 10 parts of regulator, 7 parts of water reducer and 5 parts of nano cellulose.
The silicon powder is nano-micron micro powder, SiO2The content is not less than 98 percent, and the average grain diameter is 0.05-0.5 mu m.
The specific surface area of the steel slag powder is 700-800m2The superfine powder per kg comprises the following chemical components: silicon dioxide (SiO)2) 28-30% of aluminum trioxide (Al)2O3) 6-8% of ferric oxide (Fe)2O3)11-14 percent of calcium oxide (CaO), 30-35 percent of magnesium oxide (MgO), 6-7 percent of sulfur trioxide (SO)3) 0-0.05%, potassium oxide (K)2O) 0-0.05%, sodium oxide (Na)2O)0 to 0.06 percent, and the balance being other impurities.
The specific surface area of the iron ore sand powder is 700-750m2Ultrafine powder per kg, chemical composition: silicon dioxide (SiO)2) 50-60% of aluminum trioxide (Al)2O3) 10-16% of ferric oxide (Fe)2O3)5-7 percent of calcium oxide (CaO), 4-6 percent of magnesium oxide (MgO), 5-6 percent of sulfur trioxide (SO)3) 0-0.05%, potassium oxide (K)2O) 0.05-0.08%, sodium oxide (Na)2O) 0.05-0.2%, and the balance being other impurities.
The specific surface area of the phosphogypsum powder is 300-350m2Kg, chemical composition: calcium sulfate (CaSO)4) 70-90% of silicon dioxide (SiO)2) 5-10% of phosphorus pentoxide (P)2O5) 2-4% of aluminum trioxide (Al)2O3) 1-2% and magnesium oxide (MgO) 0.5-0.8%.
The purity of the silicon nitride is not lower than 98 percent, the particle size of the nano-alumina is 400-600nm, the diameter of the nano-cellulose is 30-60nm, and the length of the nano-cellulose is 500-1000 nm.
The regulator consists of the following raw materials in parts by weight: 15 parts of sulfonated melamine formaldehyde resin, 15 parts of acrylic glycidyl ether, 20 parts of polymeric aluminum ferric silicate and 30 parts of phosphite ester.
The water reducing agent is a powder water reducing agent and is composed of the following raw materials in parts by weight: 8 parts of polyethylene glycol monomethyl ether methacrylate, 5 parts of calcium lignosulfonate and 15 parts of melamine.
Example 3 a method of making corrosion resistant cement, comprising the steps of: s1: adding 2 parts of silicon nitride, 1 part of nano aluminum oxide, 10 parts of regulator, 7 parts of water reducer and 5 parts of nano cellulose into a homogenizer A for homogenizing and stirring to obtain a mixture A; the rotation speed of the homogenizer is 2000-3000r/min, and the uniform stirring is carried out for 3-5 min;
s2: adding 80 parts of silicon powder, 200 parts of steel slag powder, 200 parts of iron ore sand powder and 60 parts of phosphogypsum powder into a homogenizer B for homogenizing and stirring to obtain a mixture B; the rotation speed of the homogenizer is 100-;
s3: adding the mixture A obtained in the step S1 into a homogenizer B, homogenizing and stirring the mixture B obtained in the step S2 to obtain a mixture C; the rotation speed of the homogenizer is 200-300r/min, and the uniform stirring is carried out for 5-8 min;
s4: adding 600 parts of the clinker powder into a mixture C obtained by a homogenizer B and S3 for homogenizing and stirring, wherein the rotating speed of the homogenizer is 100 and 150r/min, and uniformly stirring for 2-3 min; and obtaining the corrosion-resistant cement.
Comparative example 1
The difference from example 2 is that the clinker used in comparative example 1 is a commercially available normal clinker.
Comparative example 2
The difference from the example 2 is that the steel slag powder used in the comparative example 2 is the common steel slag powder sold in the market.
Comparative example 3
The difference from example 2 is that the alumina used in comparative example 3 is non-nanoscale alumina.
Comparative example 4
The difference from example 2 is that comparative example 4 does not use nanocellulose.
The performance test results of the corrosion-resistant cement obtained in this example and the cements obtained in comparative examples 1 to 4 are shown in the following tables; the inspection standard and method are as follows:
standard test method for Performance of general concrete mixtures (GB/T50080-2016);
standard test method for mechanical properties of ordinary concrete (GB/T50081-2016);
standard test methods for the long-term performance and durability of ordinary concrete (GB/T50082-2009).
Method for testing sulfate erosion resistance of cement (GB/T749-2008)
Figure BDA0002354497540000101
Figure BDA0002354497540000111
(remark: cement 3d compressive strength is not less than 17MPa.28d compressive strength is not less than 42.5MPa.3d flexural strength is not less than 3.5MPa 28d flexural strength is not less than 6.5MPa)
The corrosion-resistant cement prepared by the method has low water demand, good mechanical property and excellent durability; the marine environmental engineering paint has high crack resistance, chloride ion permeability resistance and sulfate erosion resistance, and can be well used for marine environmental engineering of dry-wet and salt-mist coupling; the corrosion-resistant cement can effectively prolong the service life of concrete engineering in marine environment, and has higher engineering application value.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (4)

1. The corrosion-resistant cement for the marine environment is characterized by comprising the following raw materials in parts by weight: 600 parts of clinker powder, 50-80 parts of silicon powder, 200 parts of steel slag powder, 200 parts of iron ore sand powder, 40-60 parts of phosphogypsum powder, 1-2 parts of silicon nitride, 0.5-1 part of nano aluminum oxide, 5-10 parts of regulator, 5-7 parts of water reducer and 1-5 parts of nano cellulose;
the specific surface area of the clinker powder is 380-2Kg, chemical composition: 62-67wt% of calcium oxide (CaO), and silicon dioxide (SiO)2)20-24 wt% of aluminum oxide (Al)2O3)4-7wt% of ferric oxide (Fe)2O3)2.5-6 wt%, magnesium oxide (MgO)0.5-1.5wt%, titanium dioxide (TiO)2)0.01-0.6wt%, sulfur trioxide (SO)3)2-3wt%, potassium oxide (K)2O)0.01-0.09wt%, sodium oxide (Na)2O)0.01-0.1 wt%；
The silicon powder is nano-micron micro powder, SiO2The content is not less than 98wt%, the average grain diameter is 0.05-0.5 mu m, and the purity of the silicon nitride is not less than 98%; the diameter of the nano-cellulose is 30-60nm, and the length is 500-1000 nm; the particle size of the nano aluminum oxide is 400-600 nm;
the specific surface area of the steel slag powder is 700-800m2The superfine powder per kg comprises the following chemical components: silicon dioxide (SiO)2)28-30 wt% of aluminum oxide (Al)2O3)6-8wt% of ferric oxide (Fe)2O3)11-14 wt%, 30-35wt% of calcium oxide (CaO), 6-7wt% of magnesium oxide (MgO), and sulfur trioxide (SO)3)0 to 0.05wt%, potassium oxide (K)2O)0-0.05wt%, sodium oxide (Na)2O)0 to 0.06wt%, the remainder being other impurities;
the specific surface area of the iron ore sand powder is 700-750m2Ultrafine powder per kg, chemical composition: silicon dioxide (SiO)2)50-60 wt% of aluminum oxide (Al)2O3)10-16 wt% of ferric oxide (Fe)2O3)5-7 wt%, calcium oxide (CaO)4-6 wt%, magnesium oxide (MgO)5-6 wt%, sulfur trioxide (SO)3)0 to 0.05wt%, potassium oxide (K)2O)0.05-0.08 wt%, sodium oxide (Na)2O)0.05-0.2 wt%, the rest is other impurities;
the powder ratio of the phosphogypsumThe surface area is 300-350m2Kg, chemical composition: calcium sulfate (CaSO)4)70-90 wt%, silicon dioxide (SiO)2)5-10 wt%, phosphorus pentoxide (P)2O5)2-4 wt% of aluminum oxide (Al)2O3)1-2 wt%, magnesium oxide (MgO)0.5-0.8 wt%; the regulator consists of the following raw materials in parts by weight: 10-15 parts of sulfonated melamine formaldehyde resin, 10-15 parts of acrylic glycidyl ether, 10-20 parts of polymeric aluminum ferric silicate and 20-30 parts of phosphite ester; the water reducing agent is a powder water reducing agent and is composed of the following raw materials in parts by weight: 3-8 parts of polyethylene glycol monomethyl ether methacrylate, 2-5 parts of calcium lignosulfonate and 10-15 parts of melamine.
2. The corrosion-resistant cement for marine environment according to claim 1, wherein the corrosion-resistant cement is prepared from the following raw materials in parts by weight: 580 parts of clinker powder 520, 55-75 parts of silicon powder, 185 parts of steel slag powder 165, 190 parts of iron ore sand powder 170, 45-55 parts of phosphogypsum powder, 1.4-1.8 parts of silicon nitride, 0.7-0.8 part of nano aluminum oxide, 6-8 parts of regulator, 5.5-6.5 parts of water reducer and 2-4 parts of nano cellulose.
3. The corrosion-resistant cement for marine environment according to claim 2, wherein the corrosion-resistant cement is prepared from the following raw materials in parts by weight: 530 parts of clinker powder, 60 parts of silicon powder, 180 parts of steel slag powder, 180 parts of iron ore sand powder, 50 parts of phosphogypsum powder, 1.7 parts of silicon nitride, 0.8 part of nano aluminum oxide, 8 parts of regulator, 6 parts of water reducer and 3.5 parts of nano cellulose.
4. The method for preparing corrosion-resistant cement for marine environment according to claim 1, comprising the steps of:
s1: adding 1-2 parts of silicon nitride, 0.5-1 part of nano aluminum oxide, 5-10 parts of regulator, 5-7 parts of water reducer and 1-5 parts of nano cellulose into a homogenizer A for homogenizing and stirring to obtain a mixture A; the rotation speed of the homogenizer A is 2000-3000r/min, and the uniform stirring is carried out for 3-5 min;
s2: adding 50-80 parts of silicon powder, 200 parts of steel slag powder 150-; the rotation speed of the homogenizer is 100-;
s3: adding the mixture A obtained in the step S1 into a homogenizer B, homogenizing and stirring the mixture B obtained in the step S2 to obtain a mixture C; the rotation speed of the homogenizer is 200-300r/min, and the uniform stirring is carried out for 5-8 min;
s4: adding 500-600 parts of the clinker powder into a mixture C obtained by a homogenizer B and S3 for homogenizing and stirring, wherein the rotating speed of the homogenizer is 100-150r/min, and the homogenizing and stirring is carried out for 2-3 min; and obtaining the corrosion-resistant cement.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2004516C1 (en) * 1992-01-22 1993-12-15 Московский Институт Инженеров Железнодорожного Транспорта Concrete mixture
CN107032714A (en) * 2017-04-28 2017-08-11 余思哲 A kind of coastal structure cement of anti-corrosion and high strength and preparation method thereof
CN108585663A (en) * 2018-06-12 2018-09-28 绵阳纽伦科技有限公司 A kind of formula of foam cement and preparation method thereof
CN109180057A (en) * 2018-09-26 2019-01-11 杭州中齐新材料科技有限公司 A kind of environmentally protective concrete water-reducing agent and preparation method thereof
CN110590201A (en) * 2019-08-13 2019-12-20 中国建筑材料科学研究总院有限公司 Road cement with high chloride ion resistance and preparation method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983966A (en) * 1982-11-05 1984-05-15 永松　建治 Polymer cement
JPH11100287A (en) * 1997-09-25 1999-04-13 Sekisui House Ltd Coating material for refreshing and repairing foundation and method for refreshing and repairing foundation, using the same
KR100724340B1 (en) * 2005-09-07 2007-06-04 쌍용양회공업(주) Low price special cement for solidofication of wastes
KR101042657B1 (en) * 2008-10-17 2011-06-20 한일시멘트 (주) Composition of compound and cement for marine concrete
CN106927701A (en) * 2017-03-28 2017-07-07 华润水泥技术研发有限公司 A kind of special composite gelled material of maritime concrete and its production method and purposes
CN107935423B (en) * 2017-11-22 2020-12-08 唐山北极熊建材有限公司 Corrosion-resistant high belite sulphoaluminate cement clinker, preparation method thereof, corrosion-resistant high belite sulphoaluminate cement and preparation method thereof
CN107793103A (en) * 2017-11-27 2018-03-13 黎芷杉 Heat insulation concrete base mortar and its production method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2004516C1 (en) * 1992-01-22 1993-12-15 Московский Институт Инженеров Железнодорожного Транспорта Concrete mixture
CN107032714A (en) * 2017-04-28 2017-08-11 余思哲 A kind of coastal structure cement of anti-corrosion and high strength and preparation method thereof
CN108585663A (en) * 2018-06-12 2018-09-28 绵阳纽伦科技有限公司 A kind of formula of foam cement and preparation method thereof
CN109180057A (en) * 2018-09-26 2019-01-11 杭州中齐新材料科技有限公司 A kind of environmentally protective concrete water-reducing agent and preparation method thereof
CN110590201A (en) * 2019-08-13 2019-12-20 中国建筑材料科学研究总院有限公司 Road cement with high chloride ion resistance and preparation method thereof

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