CN115057680A - Green self-repairing efficient infiltration crystallization double-waterproof material and preparation method thereof - Google Patents
Green self-repairing efficient infiltration crystallization double-waterproof material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a green self-repairing efficient infiltration crystallization double waterproof material and a preparation method thereof. The green self-repairing efficient infiltration crystallization double waterproof material is prepared from cement, iron tailing sand, glass powder, nano silicon, heavy calcium carbonate, a penetration type rust inhibitor, a water reducing agent, a compacting agent, polyvinyl alcohol fibers, redispersible latex powder, a slurry dispersion stabilizer, a calcium ion supplement and an active core component, and can perform deep self-repairing on a substrate. The coating formed by the waterproof material after curing has the characteristics of crack resistance and high compactness, and forms a first waterproof layer; the active core master batch has high permeability, takes the coating as a medium, takes water as a carrier, efficiently permeates into a concrete matrix, and improves the impermeability of the concrete matrix through complexation-crystallization effect to form secondary waterproofing. The double waterproof material has the characteristic of self-healing, and can realize permanent waterproofing of a concrete structure.
Description
Technical Field
The invention belongs to the technical field of rigid waterproof materials for underground engineering concrete structures, and particularly relates to a green self-repairing efficient infiltration crystallization double waterproof material and a preparation method thereof.
Background
Due to the characteristics of the concrete structure, the concrete structure is easily cracked under the influence of various environmental factors and loads in the process from construction to later service, and corrosive substances such as moisture, carbon dioxide, chloride ions and the like in the environment can enter the concrete, so that the durability of the concrete structure is influenced. In particular, once the underground structure is cracked, the subsequent maintenance cost is high, the construction process is complex, and the service life of the underground structure plays a role in controlling the whole structure. At present, flexible waterproof coiled materials are widely used for structural waterproofing, but the flexible waterproof coiled materials have the aging problem, and the waterproof performance of the flexible waterproof coiled materials can not meet the basic design requirements any more along with the service life of the flexible waterproof coiled materials. In fact, the leakage problem of the underground engineering is still one of common problems of engineering quality, the leakage rate of the underground engineering reaches more than 50%, troubles are brought to building safety and life of common people, and the direction of the common people to good life is blocked from the appearance, so that the leakage problem has great influence on the society and the economy.
The technical requirements which are still leading internationally are specified in a Chinese mandatory Standard 'general Specification for waterproofing of building and municipal engineering' of Ministry of housing and construction in 2019: the working life of the waterproof design of the underground engineering is not lower than the working life of the engineering structure design, the durability of the waterproof engineering material is adapted to the working life of the waterproof design of the engineering, the performance of the waterproof material is adapted to the environmental conditions of the engineering use, and the like. Obviously, flexible waterproofing membranes do not meet this requirement. Alternatively, rigid waterproofing becomes a necessary option for achieving the same life of underground waterproofing and structures.
The cement-based permeable crystallization type waterproof material is one of the best options for realizing rigid waterproofing, is a rigid waterproof material prepared by adding active chemical substances and the like into cement and fine sand serving as basic materials, and has a waterproof mechanism that: the active substance takes the waterproof coating as a medium, and water as a carrier permeates into the matrix, so that chemical reaction is carried out to generate dendrite crystal, and the crack is repaired to achieve the aim of preventing water. The existing cement-based permeable crystallization type waterproof material has the following defects: (1) the coating formed by curing the waterproof material is easy to crack and peel off from the matrix, and the coating has insufficient waterproof performance and cannot form effective double waterproof; (2) the active substances cannot efficiently permeate into the concrete matrix to finish the deep repair of the matrix, so that the waterproof effect flows on the surface and is not durable, and the self-repairing capability is not realized; (3) the autogenous repair is not an instant reaction, the repair needs a process, once the structure cracks, harmful components such as chloride ions in the environment can enter the concrete along with moisture, the autogenous repair can achieve the effect of preventing water again, but the harmful components such as chloride ions entering along with the moisture cannot be automatically discharged, and once the concentration threshold is reached, the reinforcement is corroded; the cost of economy and environment is high, which is not favorable for the popularization and the application in civil engineering with a plurality of cardinal numbers.
The iron tailing sand is waste discharged from a mine field and is waste particles with the particle size of less than 4.75mm generated after grinding and sorting the iron ore. The main component of the iron tailing sand is SiO 2 、Al 2 O 3 、Fe 2 O 3 And CaO. The physical and chemical properties of the iron ore tailings are relatively close to those of the sand, so that the tailings are reasonably used for producing the cement-based permeable crystalline waterproof material, the comprehensive utilization rate of the tailings can be improved, the tailings are changed into valuable things, and meanwhile, the damage of the iron ore tailings to the living environment is improved or avoided to the greatest extent. The iron tailing sand is adopted to prepare the cement-based permeable crystallization type waterproof material, and reports are not found.
Disclosure of Invention
Aiming at the problems of easy cracking of a coating, poor waterproof performance, poor permeability of active substances, untimely self-repair and the like of the existing cement-based permeable crystallization type waterproof material, the invention provides a green self-repair efficient permeable crystallization double waterproof material and a preparation method thereof. The green self-repairing efficient infiltration crystallization double waterproof material is prepared from cement, iron tailing sand, glass powder, nano silicon, heavy calcium carbonate, a penetration type rust inhibitor, a water reducing agent, a compacting agent, polyvinyl alcohol fibers, redispersible latex powder, a slurry dispersion stabilizer, a calcium ion supplement and an active core component, and can perform deep self-repairing on a substrate. The coating formed by the cured waterproof material has the characteristics of crack resistance and high compactness, and forms a first waterproof layer; the active core master batch has high permeability, takes the coating as a medium, takes water as a carrier, efficiently permeates into a concrete matrix, and improves the impermeability of the concrete matrix through complexation-crystallization effect to form secondary waterproofing. The double waterproof material has the characteristic of self-healing, and can realize permanent waterproofing of a concrete structure.
In order to achieve the purpose, the invention adopts the following scheme: a green self-repairing efficient infiltration crystallization double waterproof material at least comprises the following components: cement, iron tailing sand, glass powder, nano silicon, heavy calcium carbonate, a penetration type rust inhibitor, a water reducing agent, a compacting agent, polyvinyl alcohol fiber, redispersible latex powder, a slurry dispersion stabilizer, a calcium ion supplement and an active core component.
Preferably, the components and parts by weight are as follows: 35-50 parts of cement, 20-30 parts of iron tailing sand, 10-20 parts of glass powder, 0.5-1.5 parts of nano silicon, 5-10 parts of heavy calcium carbonate, 1-2 parts of permeation type rust inhibitor, 0.1-0.4 part of water reducing agent, 3-5 parts of compacting agent, 0.2-0.5 part of polyvinyl alcohol fiber, 0.5-1 part of redispersible latex powder, 0.2-0.5 part of slurry dispersion stabilizer, 1-5 parts of calcium ion supplement and 2-3 parts of active core component.
Wherein, the active core component is a mixture of sodium silicate, magnesium fluosilicate, EDTA tetrasodium and sodium citrate, and the weight ratio is 3: (1-1.5): (1-1.5): (1-1.5).
Preferably, the cement is p.o.42.5 portland cement.
Preferably, the iron tailings are ultrafine sands with a fineness modulus of 1.5-0.7 and an average grain diameter of less than 0.25 mm.
Preferably, the glass powder is prepared by grinding liquid crystal display glass, and the particle size is not more than 45 mu m.
Preferably, the permeation type rust inhibitor is glucose amide synthesized by glucose derivatives and polyamine.
Preferably, the water reducing agent is a shrinkage-reducing polycarboxylic acid water reducing agent.
Preferably, the compacting agent is a calcium sulphoaluminate compacting agent, more preferably a calcium sulphoaluminate compacting agent, which is prepared from calcium sulphoaluminate cement clinker, alunite and fluorgypsum according to the mass ratio of 3.5: 3: 3.5 compounding, the specific surface area of the ground powder is 200-250 m 2 /kg。
Preferably, the diameter of the polyvinyl alcohol fiber is 12-18 mu m, the fiber length is 6-9mm, and the tensile strength is not less than 1200 MPa.
Preferably, the redispersible latex powder is vinyl acetate, ethylene and fatty acid vinyl ester terpolymer rubber powder.
Preferably, the slurry dispersion stabilizer is high performance hydrous magnesium silicate S9 (Tolsa high performance hydrous magnesium silicate S9).
Preferably, the calcium ion supplement is calcium hydroxide.
The preparation method comprises the following steps: weighing the components in parts by weight, and uniformly mixing in a mixer. The water can be used after being added into the construction site and stirred, and the water adding amount enables the water-material ratio to be 0.30-0.35.
The raw materials and the functions are as follows:
iron tailing sand: the waterproof coating has the advantages of replacing quartz sand, saving cost, and enabling the waterproof coating to have good construction performance and better uniformity by adopting extra-fine tailing sand, thereby being beneficial to improving waterproof quality.
Glass powder: the addition of the glass powder reduces the consumption of cement, reduces the economic and environmental cost, improves the impermeability of the waterproof material coating, improves the self-repairing capability of the coating in the later period through the volcanic ash reaction, and can enhance the interface bonding property of the polyvinyl alcohol fiber and the waterproof material through the hydration product, thereby further improving the crack resistance.
Glucamides: is prepared by polymerizing glucose derivatives and polyamine. Since the autogenous repair is not an immediate reaction, the repair needs a process, once the structure cracks, harmful components such as chloride ions in the environment enter the concrete along with moisture to cause the corrosion of the reinforcing steel bars. The molecules of the glucamide substances have polyhydroxy structures and amide groups, the hydroxyl groups can be used as effective adsorption groups in an alkaline chloride medium and can be well adsorbed on the surface of the steel bar, the corrosion resistance and rust resistance of the steel bar are effectively improved, and N atoms in the amide groups can be tightly adsorbed with the steel bar to form an effective protective film for protecting the steel bar. The rust inhibitor with the migration and permeation functions can permeate into concrete to play a role in preventing reinforcing steel bars from being corroded. The reaction equation of the polymerization process of the glucose derivative and the polyamine is shown below.
n=1,2,3,4
The reduction type polycarboxylic acid water reducing agent comprises the following components: the water reducing rate of the reduction type polycarboxylate superplasticizer is more than 25 percent. The shrinkage-reducing polycarboxylic acid high-performance water reducing agent introduces diethylene glycol monobutyl ether group with shrinkage reducing function, so that the surface tension of the pore solution in the hardened slurry can be reduced, the additional compressive stress caused by the water loss of the pore solution is reduced, the shrinkage of the hardened coating is effectively reduced, and the cracking of the coating is reduced. The structure (schematic) of the reduction type polycarboxylate superplasticizer is shown as follows.
a=20-30，b=5-10，c=5-10，n=40-60
Calcium sulphoaluminate compacting agent: the calcium sulphoaluminate compacting agent is added into a cement-based material and reacts with cement to generate a calcium sulphoaluminate crystalline hydration product, so that capillary pores are blocked, and the compacting effect is achieved. The calcium sulphoaluminate compacting agent can react with cement to generate a hydration product with increased volume, so that the compactness of the hardened slurry is increased, the coating is not easy to crack, and the waterproof capability of the coating is improved; meanwhile, the method can also react to generate crystal precipitates under the condition of water, and plays a role in repairing. The calcium sulphoaluminate compacting agent is prepared from calcium sulphoaluminate cement clinker (also called sulphoaluminate cement clinker C) 4 A 3 55-75 percent), alunite and fluorgypsum (by-product (industrial waste) of hydrogen fluoride prepared by sulfuric acid and fluorspar, but the content of calcium sulfate is higher and is generally more than 90 percent) are compounded and reacted in two stages, wherein the first stage is early hydration reaction, calcium sulphoaluminate cement clinker and fluorgypsum act, and the generated calcium sulphoaluminate is beneficial to the compaction of early cement hardened body; the second stage is the middle stage (several days of age) hydration reaction, the alunite and the fluorgypsum act, and the generated calcium sulphoaluminate is beneficial to the compaction of the cement hardened body in the middle and later stages.
Polyvinyl alcohol fibers: the polyvinyl alcohol fibers are distributed in the waterproof material disorderly, so that the occurrence and development of coating cracks can be effectively prevented, and the permeability resistance of the coating is improved; in addition, the polyvinyl alcohol fiber has hydrophilicity, can adsorb a large amount of ions from concrete, can react with each other in cracks to generate crystal precipitation, and carries out self-generated repair on the cracks.
Water-soluble redispersible powder: the adhesive powder is ternary copolymer rubber powder of vinyl acetate, ethylene and fatty acid vinyl ester, has high bonding capability, outstanding waterproof performance and good bonding strength, can improve the bonding property, the breaking strength, the plasticity, the wear resistance and the workability of a coating, and has stronger flexibility in anti-crack mortar.
Slurry dispersion stabilizer: the self-repairing efficient infiltration crystallization double waterproof material is powder, can be used after being added with water and stirred on a construction site, the water adding amount enables the water-material ratio to be 0.30-0.35, high fluidity is not needed, and the self-repairing efficient infiltration crystallization double waterproof material is not a barrel liquid coating which is conventionally seen in a building material market, so that the addition of a dispersion stabilizer is rarely seen. The dispersion stabilizer of the admixture slurry is high-performance hydrated magnesium silicate, which has two functions: (1) the addition of the slurry dispersion stabilizer can improve the thixotropy of a slurry system, and can enable dispersed solid particles to be mutually crosslinked to form a space structure, so that the precipitation of the solid particles is effectively prevented, and the slurry system can be thickened, the smoothness is improved, and the construction performance is improved while the viscosity of the slurry system is not influenced; (2) the inorganic material can participate in chemical reaction, provides compactness and strength of slurry, and is beneficial to improving the waterproof capability of the coating.
Active core component: the complex is a mixture of silicate and organic carboxylate, wherein the silicate is a mixture of sodium silicate and magnesium fluosilicate and is an active substance, and the organic carboxylate is a mixture of tetrasodium EDTA and sodium citrate and has a complexing effect.
The soluble sodium silicate can directly react with calcium ions and calcium hydroxide in the concrete to form calcium silicate crystals, so that the filling effect is achieved, gaps are healed, and the waterproof effect is achieved. The magnesium fluosilicate and calcium hydroxide in the set cement undergo a secondary hydration reaction, and the products are mainly non-water-soluble calcium fluoride, magnesium fluoride and silica sol. The generated active silicon dioxide can continue to react with calcium hydroxide for the second time to generate C-S-H gel which is insoluble in water, fills capillary pores and blocks micro cracks, and plays a role in water prevention. The reaction equation is as follows:
Ca 2+ +SiO 3 2- +nH 2 O→CaSiO 3 ·nH 2 O
MgSiF 6 +2Ca(OH) 2 →2CaF 2 +MgF 2 +SiO 2 +2H 2 O
SiO 2 +Ca(OH) 2 +nH 2 O→C-S-H
the soluble sodium silicate and the magnesium fluosilicate have better permeability. On one hand, when the cement-based permeable crystalline material is coated on the surface of concrete, under the combined action of concentration and surface tension, the cement-based permeable crystalline material can permeate into the concrete by virtue of water existing in the pores of the concrete material, namely the water can permeate into the concrete by taking the water as a carrier, and the reaction product continuously fills the pores of the concrete. On the other hand, when the humidity is low (relative to less water), the silicon dioxide exists in the form of gel, the unhydrated cement is promoted to be continuously hydrated to generate calcium hydroxide, the C-S-H gel generated by the secondary reaction of the active silicon dioxide and the calcium hydroxide is insoluble in water, and the process exists for a long time, so that the long-term deep repair effect is achieved. The effect is more prominent when sodium silicate and magnesium fluosilicate are mixed for use, and the magnesium fluosilicate can accelerate the hardening of the sodium silicate and generate silica gel with good relative chemical stability.
The main components of the complexing agent of the tetrasodium EDTA and the sodium citrate contain more hydroxyl groups. The calcium complex enters the interior of a concrete structure together with water, and when calcium ions are encountered, the complex and the calcium ions are complexed to generate a calcium complex, the generated calcium complex is unstable, and the calcium ions are captured by other anions to generate more stable calcium silicate and calcium aluminate crystals; when aggressive substances such as moisture, carbon dioxide and the like in the environment enter the concrete, the calcium complex releases calcium ions, absorbs the carbon dioxide and generates calcium carbonate. At this time, the calcium complex becomes an anionic group again, and continues to migrate with water into the concrete, thereby continuously playing a role. Therefore, the concrete can prevent aggressive substances from continuously entering the concrete and can play a role in water prevention. The mixing of the two components can make the above reaction processes play the roles of mutual supplement and superposition, and can play the roles of repairing and water proofing in a longer time.
Compared with the prior art, the invention has the following advantages:
1. double waterproof:
(1) the coating is anti-cracking and waterproof
The glass powder has volcanic ash activity, and reacts with cement to generate hydration products, so that the interface bonding property of the polyvinyl alcohol fiber and the waterproof material is enhanced, the impermeability of the waterproof material coating is improved, and the self-repairing capability of the coating in the later period is improved. The coarse whiting has similar function with the nano-silicon, plays a role in filling ultrafine powder and can react with cement to increase compactness. The calcium sulphoaluminate compacting agent can react with cement to generate a needle-shaped crystalline hydration product with increased volume, so as to block capillary channels, increase the compactness of the hardened slurry, ensure that the coating is not easy to crack and increase the waterproof capacity of the coating; meanwhile, the method can also play a role in generating crystal precipitates through reaction in the presence of water and repairing fine gaps. The shrinkage-reducing polycarboxylic acid water reducing agent can reduce water consumption and increase compactness and strength. The comprehensive results are: the multiple components are used in a composite way, so that the hydration is accelerated, the crystalline hydration products are increased, and the hardened body structure is more compact; and simultaneously, the shrinkage is reduced, and the cracking of the coating is avoided. The multi-component has the function of 'gold partner', so that the coating has better waterproof performance.
(2) Concrete structure repair waterproof
Active chemical substances in the components permeate in concrete by taking water as a carrier, react with cement to generate hydration products with increased volume, complex, crystallize and precipitate, block capillary channels, increase the compactness of the concrete, deeply repair fine gaps and improve the waterproof performance of the concrete.
2. High permeability, long term repair and deep layer repair of active ingredients
The active core component is sodium silicate, magnesium fluosilicate, EDTA tetrasodium, sodium citrate, wherein uses sodium silicate, magnesium fluosilicate as active material, and soluble sodium silicate and magnesium fluosilicate all have better permeability itself, can repair for a long time the degree of depth, and magnesium fluosilicate can accelerate the hardening of sodium silicate, and generate the good silica gel of relative chemical stability, makes the repair effect better.
The EDTA tetrasodium and the sodium citrate are mutually supplemented and superposed to play a complexing role, so that aggressive substances can be prevented from continuously entering the concrete, and a waterproof role can be played. The mixing of the two components can make the above reaction processes play the roles of mutual supplement and superposition, and can play the roles of repairing and water proofing in a longer time.
3. Prevent the reinforcing steel bar from being corroded and avoid untimely self-repairing
The permeation type rust inhibitor is glucose amide, the molecules of glucose amide substances have polyhydroxy structures and amide groups, the hydroxyl groups can be used as effective adsorption groups in an alkaline chloride medium and can be well adsorbed on the surface of a steel bar, the corrosion resistance and rust resistance of the steel bar are effectively improved, and N atoms in the amide groups can be tightly adsorbed with the steel bar to form an effective protective film for protecting the steel bar. The rust inhibitor with the migration and permeation functions can permeate into concrete to play a role in preventing reinforcing steel bars from being corroded.
4. Incorporating high performance hydrous magnesium silicate
The self-repairing efficient infiltration crystallization double waterproof material is powder, can be used by adding water and stirring on a construction site, does not need high fluidity, and is rarely doped with a dispersion stabilizer. The invention adds high-performance hydrated magnesium silicate innovatively, can improve the thixotropy of a slurry system, improve the smoothness, improve the construction performance, make a waterproof coating more uniform and improve the waterproof quality.
5. Green and environment protection
The iron tailing sand and the glass powder are added into the composition of the invention. The iron tailing sand is waste discharged from a mine site, and the glass powder is prepared by grinding waste liquid crystal display glass. The effect has two important points: (1) the waste is utilized, so that the waste is changed into valuable, and the environment-friendly, low-carbon and environment-friendly effects are achieved; (2) the iron ore tailing sand has physical and chemical properties close to those of the sand, can completely replace quartz sand, has the price of only 1/10 of the quartz sand, saves the cost, and is doped with extra-fine tailing sand, thereby increasing the uniformity and the construction performance of the coating. The glass powder has a volcanic ash effect, the dosage of cement is reduced by doping, the economic and environmental cost is reduced, the impermeability of the waterproof material coating is improved, and the self-repairing capability of the coating in the later period is improved by the volcanic ash reaction.
Drawings
FIG. 1 is a graph showing mortar impermeability pressure ratios of a dual waterproof material (abbreviated as: NC) prepared in example 1 and commercially available 1, commercially available 2 and commercially available 3 similar products;
FIG. 2 is a graph showing concrete impermeability pressure ratios of the double waterproof material (abbreviated as NC) prepared in example 1 and commercial products 1, 2 and 3 of the same type.
Detailed Description
The following embodiments of the present invention are provided for more intuitive and clear description of the technical solutions of the present invention, so as to facilitate those skilled in the art to better understand the contents of the present invention and to implement the present invention, but the present invention is not limited to these embodiments. The cement in the following examples is P.O.42.5 Portland cement, and the iron tailing sand is ultra-fine sand with fineness modulus of 1.5-0.7 and average particle size of less than 0.25 mm; the glass powder is prepared by grinding and processing liquid crystal display glass, and the particle size is not more than 45 mu m; the permeation type rust inhibitor is a glucamide substance synthesized by glucose derivatives and polyamine; the water reducing agent is a shrinkage-reducing polycarboxylic acid high-performance water reducing agent; the compacting agent is calcium sulphoaluminate compacting agent; the diameter of the polyvinyl alcohol fiber is 12-18 mu m, the length of the fiber is 6-9mm, and the tensile strength is not less than 1200 MPa; the redispersible latex powder is water-soluble redispersible powder and is ternary copolymer rubber powder of vinyl acetate, ethylene and fatty acid vinyl ester; the slurry dispersion stabilizer is high-performance hydrated magnesium silicate S9; the calcium ion supplement is calcium hydroxide.
Example 1
Raw materials (parts by weight): 45 parts of cement, 20 parts of iron tailing sand, 15 parts of glass powder, 1 part of nano-silicon, 5 parts of heavy calcium carbonate, 1.5 parts of a permeable rust inhibitor, 0.3 part of a water reducing agent, 5 parts of a compacting agent, 0.3 part of polyvinyl alcohol fiber, 1 part of redispersible latex powder, 0.2 part of a slurry dispersion stabilizer, 5 parts of a calcium ion supplement and 3.0 parts of an active core component.
Wherein, the active core components are as follows: the sodium silicate, sodium fluosilicate, EDTA tetrasodium, and sodium citrate, and the weight ratio is 3: 1.5: 1.5: 1.5.
the preparation method comprises the following steps: weighing the raw materials according to the weight parts, and uniformly mixing in a mixer to obtain the green self-repairing efficient infiltration crystallization double waterproof material powder. The water can be used after being added into water and stirred in a construction site, and the water adding amount enables the water-material ratio to be 0.30.
Example 2
Raw materials (parts by weight): 40 parts of cement, 20 parts of iron tailing sand, 20 parts of glass powder, 1 part of nano-silicon, 5 parts of heavy calcium carbonate, 1.5 parts of permeable rust inhibitor, 0.3 part of water reducing agent, 5 parts of compacting agent, 0.3 part of polyvinyl alcohol fiber, 1 part of redispersible latex powder, 0.2 part of slurry dispersion stabilizer, 4 parts of calcium ion replenisher and 3 parts of active core component.
Wherein, the active core components are as follows: the sodium silicate, sodium fluosilicate, EDTA tetrasodium, and sodium citrate, and the weight ratio is 3: 1.5: 1.5: 1.5.
the preparation method comprises the following steps: weighing the raw materials according to the weight parts, and uniformly mixing in a mixer to obtain the green self-repairing efficient infiltration crystallization double waterproof material powder. The water can be used after being added and stirred in a construction site, and the water adding amount ensures that the water-material ratio is 0.30.
Example 3
Raw materials (parts by weight): 40 parts of cement, 25 parts of iron tailing sand, 15 parts of glass powder, 1 part of nano-silicon, 5 parts of heavy calcium carbonate, 1.5 parts of permeable rust inhibitor, 0.20 part of water reducer, 5 parts of compacting agent, 0.3 part of polyvinyl alcohol fiber, 1 part of redispersible latex powder, 0.3 part of slurry dispersion stabilizer, 4 parts of calcium ion replenisher and 2 parts of active core component.
Wherein the active core components are as follows: the mixture of sodium silicate, magnesium fluosilicate, EDTA tetrasodium and sodium citrate, and the weight ratio is 3: 1: 1.2: 1.2.
the preparation method comprises the following steps: weighing the raw materials according to the weight parts, and uniformly mixing in a mixer to obtain the green self-repairing efficient infiltration crystallization double waterproof material powder. The water can be used after being added into water and stirred in a construction site, and the water adding amount enables the water-material ratio to be 0.32.
Example 4
Raw materials (parts by weight): 40 parts of cement, 25 parts of iron tailing sand, 15 parts of glass powder, 1 part of nano-silicon, 5 parts of heavy calcium carbonate, 1.5 parts of a permeable rust inhibitor, 0.15 part of a water reducing agent, 5 parts of a compacting agent, 0.3 part of polyvinyl alcohol fiber, 1 part of redispersible latex powder, 0.4 part of a slurry dispersion stabilizer, 4 parts of a calcium ion supplement and 2 parts of an active core component.
Wherein, the active core components are as follows: the mixture of sodium silicate, magnesium fluosilicate, EDTA tetrasodium and sodium citrate, and the weight ratio is 3: 1.0: 1.0: 1.0.
the preparation method comprises the following steps: weighing the raw materials according to the weight parts, and uniformly mixing in a mixer to obtain the green self-repairing efficient infiltration crystallization double waterproof material powder. The water can be used after being added into the construction site and stirred, and the water adding amount enables the water-material ratio to be 0.34.
Test example 1: performance testing of Dual waterproof materials prepared in examples 1-4
The dual waterproof materials prepared in examples 1 to 4 were subjected to performance tests, the test results are shown in table 1 below, and the test methods were performed according to the regulations of GB18445-2012 "cement-based infiltration crystalline waterproof material".
Table 1: results of testing various properties of the double waterproof materials of examples 1 to 4
From the test results in table 1, it can be seen that the green self-repairing efficient infiltration crystalline dual waterproof materials prepared in embodiments 1 to 4 all meet the performance index requirements of national standard GB18445-2012, and each index is superior to the performance index requirements of national standard GB18445-2012, which indicates that the dual waterproof materials prepared in embodiments 1 to 4 have excellent performance and meet the specification requirements of national standard GB 18445-2012. The embodiment 1 has the best performance and is the best scheme in the embodiments 1-4.
Meanwhile, the prepared double waterproof material is applied to multiple practical projects, a coating coated on the surface of concrete does not crack, and reinforcing steel bars in the waterproof concrete do not rust.
Test example 2: experimental data of impermeability and waterproof performance of embodiment 1 of the invention and the prior art
The mortar impermeability and concrete impermeability of the double waterproof material (abbreviated as NC) prepared in example 1 were compared with those of similar products commercially available 1, commercially available 2 and commercially available 3, and the test method was performed according to the regulations of GB18445-2012 "cement-based permeable crystalline waterproof material", and the test results are shown in table 2 and fig. 1-2.
Remarking:
commercial 1: a cement-based infiltration crystallization waterproof coating (powder) produced by Shanghai Tanzao waterproof building material Co., Ltd is marked as 'Tanzao', the water adding amount for coating preparation is 0.30.
Commercial 2: the product is prepared by adopting a CABOV-brand cement-based permeable crystallization active master batch of a commercial salt city Qiming building material science and technology limited company according to the following formula. Raw materials (parts by weight): 45 parts of cement, 20 parts of iron tailing sand, 15 parts of glass powder, 1 part of nano-silicon, 5 parts of heavy calcium carbonate, 1.5 parts of permeable rust inhibitor, 0.3 part of water reducing agent, 5 parts of compacting agent, 0.3 part of polyvinyl alcohol fiber, 1 part of redispersible latex powder, 0.2 part of slurry dispersion stabilizer, 5 parts of calcium ion supplement and 3.0 parts of CAOV cement-based permeable crystallization active master batch. The preparation method comprises the following steps: weighing the raw materials according to the weight parts, and uniformly mixing in a mixer to obtain the green self-repairing efficient infiltration crystallization double waterproof material powder. The water can be used after being added into water and stirred in a construction site, and the water adding amount enables the water-material ratio to be 0.30.
Commercial 3: the product is prepared by adopting a CABOV-brand cement-based permeable crystallization active master batch of a commercial salt city Qiming building material science and technology limited company according to the following formula. Raw materials (parts by weight): 43 parts of cement, 20 parts of iron tailing sand, 15 parts of glass powder, 1 part of nano-silicon, 5 parts of heavy calcium carbonate, 1.5 parts of permeable rust inhibitor, 0.3 part of water reducing agent, 5 parts of compacting agent, 0.3 part of polyvinyl alcohol fiber, 1 part of redispersible latex powder, 0.2 part of slurry dispersion stabilizer, 5 parts of calcium ion supplement and 5.0 parts of CAOV cement-based permeable crystallization active master batch. The preparation method comprises the following steps: weighing the raw materials according to the weight parts, and uniformly mixing in a mixer to obtain the green self-repairing efficient infiltration crystallization double waterproof material powder. The water can be used after being added into water and stirred in a construction site, and the water adding amount enables the water-material ratio to be 0.30.
From the results of table 2, it can be seen that: the product performance of the double waterproof material is obviously better than that of a commercial product, the range of the product is increased by 11.1 percent except the permeation resistance pressure of the mortar with the coating, and the range of the product is increased by more than 20 percent. As shown in FIGS. 1-2, the mortar impermeability pressure ratio and the concrete impermeability pressure ratio are improved by more than 20% compared with those of the commercially available 1-3, which shows the performance advantages of the active ingredient component of the invention in improving impermeability. Meanwhile, when the prepared dual waterproof material is applied to multiple practical projects, the coating coated on the surface of concrete does not crack, and reinforcing steel bars in the waterproof concrete do not rust, so that the synergistic effect of the components is remarkable in the aspects of cracking resistance of the coating and reinforcing steel bar corrosion resistance.
The foregoing descriptions of the embodiments of the present invention are provided for the purpose of illustrating the present invention more intuitively and clearly, so as to enable those skilled in the art to better understand the content of the present invention and to implement the present invention, and the embodiments are exemplary and not intended to be limiting, and the improvement and modification made by those skilled in the art according to the disclosure of the present invention should be within the protection scope of the present invention.
Claims (8)
1. A green self-repairing efficient infiltration crystallization double waterproof material is characterized by comprising the following components in parts by weight: 35-50 parts of cement, 20-30 parts of iron tailing sand, 10-20 parts of glass powder, 0.5-1.5 parts of nano silicon, 5-10 parts of heavy calcium carbonate, 1-2 parts of permeation type rust inhibitor, 0.1-0.4 part of water reducing agent, 3-5 parts of compacting agent, 0.2-0.5 part of polyvinyl alcohol fiber, 0.5-1 part of redispersible latex powder, 0.2-0.5 part of slurry dispersion stabilizer, 1-5 parts of calcium ion supplement and 2-3 parts of active core component; the water reducing agent is a shrinkage-reducing polycarboxylic acid water reducing agent;
the active core component is a mixture of sodium silicate, magnesium fluosilicate, EDTA tetrasodium and sodium citrate, and the weight ratio of the active core component to the sodium fluosilicate is 3: (1-1.5): (1-1.5): (1-1.5).
2. The green self-repairing efficient infiltration crystallization double waterproof material as claimed in claim 1, characterized in that the iron tailing sand is ultra-fine sand with fineness modulus of 1.5-0.7 and average particle size of below 0.25 mm; the glass powder is prepared by grinding liquid crystal display glass, and the particle size is not more than 45 mu m.
3. The green self-repairing high-efficiency permeable crystallization double waterproof material as claimed in claim 1, characterized in that the permeable rust inhibitor is a glucamide substance synthesized from a glucose derivative and polyamine; the compacting agent is calcium sulphoaluminate compacting agent.
4. The green self-repairing efficient infiltration crystallization double waterproof material as claimed in claim 1, characterized in that the polyvinyl alcohol fiber has a diameter of 12-18 μm, a fiber length of 6-9mm, and a tensile strength of not less than 1200 MPa.
5. The green self-repairing efficient permeable crystallization double waterproof material as claimed in claim 1, characterized in that the redispersible latex powder is vinyl acetate, ethylene and vinyl ester of fatty acid terpolymer rubber powder.
6. The green self-repairing high-efficiency permeable crystallization double waterproof material as claimed in claim 1, characterized in that the slurry dispersion stabilizer is high-performance hydrous magnesium silicate S9; the calcium ion supplement is calcium hydroxide.
7. The preparation method of the green self-repairing efficient infiltration crystallization dual waterproof material as claimed in claim 1, characterized in that, the components are weighed according to the weight parts and mixed evenly in a mixer.
8. The use method of the green self-repairing efficient infiltration crystallization double waterproof material as claimed in claim 1, characterized in that water is added to the construction site for stirring, and the water addition amount enables the water-material ratio to be 0.30-0.35.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115717004A (en) * | 2022-11-23 | 2023-02-28 | 沪宝新材料科技（上海）股份有限公司 | Silicate exterior wall coating and preparation method thereof |
| CN115784704A (en) * | 2022-11-14 | 2023-03-14 | 北京易晟元环保工程有限公司 | Acid-corrosion-resistant concrete structure repair material, preparation method and repair construction method |
| CN115893916A (en) * | 2023-01-07 | 2023-04-04 | 河北电力工程监理有限公司 | Low-carbon environment-friendly solid waste based permeable crystallization material and preparation method thereof |
| CN115974448A (en) * | 2022-12-07 | 2023-04-18 | 国控基业(北京)科技有限公司 | Self-repairing material for concrete cracks, preparation method and use method |
| CN116891648A (en) * | 2023-06-28 | 2023-10-17 | 泰山学院 | Preparation method of self-cleaning and corrosion-resistant super-hydrophobic iron tailing mortar coating |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105801446A (en) * | 2016-03-03 | 2016-07-27 | 江苏中铁奥莱特新材料有限公司 | Preparation method of concrete corrosion inhibitor |
| JP2018203582A (en) * | 2017-06-07 | 2018-12-27 | 株式会社トクヤマ | Water-proof material |
| CN109437787A (en) * | 2018-12-29 | 2019-03-08 | 河南嘉方实业有限公司 | A kind of high-strength selfreparing waterproof mortar of quick-drying |
| CN110105025A (en) * | 2019-06-19 | 2019-08-09 | 上海凯顿百森建筑工程有限公司 | Based on the modified cementitious capillary waterproofing material of nano silica-base material and its preparation and application |
| CN113135695A (en) * | 2021-04-09 | 2021-07-20 | 南通固盛建材有限公司 | Anti-cracking anti-permeation high-durability concrete and preparation method thereof |
-
2022
- 2022-08-18 CN CN202210992000.9A patent/CN115057680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105801446A (en) * | 2016-03-03 | 2016-07-27 | 江苏中铁奥莱特新材料有限公司 | Preparation method of concrete corrosion inhibitor |
| JP2018203582A (en) * | 2017-06-07 | 2018-12-27 | 株式会社トクヤマ | Water-proof material |
| CN109437787A (en) * | 2018-12-29 | 2019-03-08 | 河南嘉方实业有限公司 | A kind of high-strength selfreparing waterproof mortar of quick-drying |
| CN110105025A (en) * | 2019-06-19 | 2019-08-09 | 上海凯顿百森建筑工程有限公司 | Based on the modified cementitious capillary waterproofing material of nano silica-base material and its preparation and application |
| CN113135695A (en) * | 2021-04-09 | 2021-07-20 | 南通固盛建材有限公司 | Anti-cracking anti-permeation high-durability concrete and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784704A (en) * | 2022-11-14 | 2023-03-14 | 北京易晟元环保工程有限公司 | Acid-corrosion-resistant concrete structure repair material, preparation method and repair construction method |
| CN115717004A (en) * | 2022-11-23 | 2023-02-28 | 沪宝新材料科技（上海）股份有限公司 | Silicate exterior wall coating and preparation method thereof |
| CN115974448A (en) * | 2022-12-07 | 2023-04-18 | 国控基业(北京)科技有限公司 | Self-repairing material for concrete cracks, preparation method and use method |
| CN115974448B (en) * | 2022-12-07 | 2023-06-06 | 国控基业(北京)科技有限公司 | Self-repairing material for concrete cracks, preparation and use method thereof |
| CN115893916A (en) * | 2023-01-07 | 2023-04-04 | 河北电力工程监理有限公司 | Low-carbon environment-friendly solid waste based permeable crystallization material and preparation method thereof |
| CN115893916B (en) * | 2023-01-07 | 2024-05-17 | 河北电力工程监理有限公司 | Low-carbon environment-friendly solid waste base permeable crystallization material and preparation method thereof |
| CN116891648A (en) * | 2023-06-28 | 2023-10-17 | 泰山学院 | Preparation method of self-cleaning and corrosion-resistant super-hydrophobic iron tailing mortar coating |
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