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CN-121627373-B - Preparation method and texture process of high-strength concrete material

CN121627373BCN 121627373 BCN121627373 BCN 121627373BCN-121627373-B

Abstract

The invention discloses a preparation method and a texture process of a high-strength concrete material, and relates to the technical field of concrete materials. The concrete material prepared by the invention comprises, by weight, 180-220 parts of basalt coarse aggregate, 90-110 parts of basalt medium aggregate, 70-90 parts of fine aggregate, 1.5-3.5 parts of nano kaolin, 10-20 parts of granulated blast furnace slag powder, 5-10 parts of silica fume, 80-100 parts of activated steel slag gel, 35-40 parts of mixing water, 0.3-0.8 part of water reducer, 0.05-0.15 part of retarder and 0.1-0.3 part of water-retaining agent, wherein the fine aggregate is prepared by wrapping secondary fly ash and regenerated glass powder with cationic etherified starch. The aggregate formula of the invention effectively improves part of raw material defects and obviously improves the compressive strength of concrete. The embossing process makes the finished concrete have extremely high similarity with natural stone, but has lower cost and higher strength, and has great advantages and prospects.

Inventors

  • SUN FUXING
  • DONG HONGKUN
  • WU DI
  • LEI JIALIN
  • Fan Bingkui

Assignees

  • 黑龙江省中冉建材有限公司

Dates

Publication Date
20260512
Application Date
20260202

Claims (9)

  1. 1. A high-strength concrete material, which is characterized in that the concrete material is a brick prepared by embossing 80% of base layer slurry and 20% of surface layer slurry through a die; The base layer slurry comprises 180-220 parts of basalt coarse aggregate, 90-110 parts of basalt medium aggregate, 70-90 parts of fine aggregate, 1.5-3.5 parts of nano kaolin, 10-20 parts of granulated blast furnace slag powder, 5-10 parts of silica fume, 80-100 parts of activated steel slag gel, 35-40 parts of mixing water, 0.3-0.8 part of water reducer, 0.05-0.15 part of retarder and 0.1-0.3 part of water retention agent; The fine aggregate comprises secondary fly ash, regenerated glass powder with the particle size of 2mm and cationic etherified starch; The surface layer slurry comprises 20 parts of base layer slurry as a base material, 0.8-1.4 parts of ferric oxide pigment pretreated by a silane coupling agent KH-570, 0.5-1.0 parts of 800-mesh mica powder and 0.06-0.12 parts of polycarboxylic acid water reducer.
  2. 2. The high-strength concrete material according to claim 1, wherein the activated steel slag gel material is prepared by ball milling and alkali excitation of dry converter steel slag.
  3. 3. The preparation method of the high-strength concrete material is characterized by comprising the following preparation steps: (1) Adding dry converter slag into a planetary ball mill to obtain steel slag powder, mixing and stirring the steel slag powder and a compound alkali-exciting agent A, sealing, standing and curing for 24 hours to obtain activated steel slag gel, mixing secondary fly ash and regenerated glass powder, adding the mixture into the ball mill to grind to obtain compound fine powder, coating the compound fine powder with a cationic etherified starch aqueous solution, stirring and treating the solution and the powder at a mass ratio of 4.5-5.5:100 for 30 minutes at 75 ℃, and then drying and scattering to obtain fine aggregate; (2) 180-220 parts of coarse aggregate, 90-110 parts of aggregate, 70-90 parts of fine aggregate, 1.5-3.5 parts of nano kaolin, 10-20 parts of granulated blast furnace slag powder and 5-10 parts of silica fume are put into a stirrer to be dry-mixed for 60s, then 80-100 parts of activated steel slag gel and solution are added, the solution is prepared by mixing and dissolving 0.3-0.8 part of water reducer, 0.05-0.15 part of retarder, 0.1-0.3 part of water retention agent and 35-40 parts of mixing water, stirring for 60s at a slow speed, stirring for 180s at a fast speed, obtaining uniform base layer slurry, a proper amount of base layer slurry is divided into 20 equal parts according to weight, the base layer is used as 20 base materials, 0.8-1.4 parts of iron oxide pigment pretreated by silane coupling agent KH-570 and 0.5-1.0 part of 800 mesh mica powder are added, simultaneously 0.06-0.12 part of water reducer is added, the surface layer slurry is prepared, when the surface layer slurry is molded, the surface layer slurry is poured, the slurry is prepared, the slurry is 80% of the total volume of the slurry is poured in a mold, the block is stirred for 80% of the total volume, the surface of the slurry is kept for the block is subjected to vibration curing, then the block is kept for the impression, and the wet curing is carried out for 28 h, after the block is kept for the same, after the surface is subjected to the impression, and the impression curing condition is carried out, after the block is kept for the surface is subjected to the wet curing, after the surface is kept for the brick is subjected to the wet curing, after the surface is kept for 28 days, after the wet curing, after the surface is kept.
  4. 4. The method for preparing the high-strength concrete material according to claim 3, wherein the compound alkali-activator A in the step (1) is prepared by compounding potash water glass, lithium hydroxide and anhydrous sodium sulfate according to a mass ratio of 100:5:2, and the solid content of the potash water glass is 40%.
  5. 5. A method for producing a high-strength concrete material according to claim 3, wherein the concentration of the aqueous solution of cationic etherified starch in the step (1) is 3 to 5%.
  6. 6. The method for preparing a high-strength concrete material according to claim 3, wherein the coarse aggregate in the step (2) is crushed basalt with a grain size of 9.5-19.0mm for continuous grading, and the coarse aggregate is crushed basalt with a grain size of 2.2-5.4mm for continuous grading.
  7. 7. The method for preparing a high-strength concrete material according to claim 3, wherein the water reducing agent in the step (2) is a polycarboxylic acid type high-efficiency water reducing agent, the retarder is sodium gluconate, and the water-retaining agent is hydroxypropyl methyl cellulose ether.
  8. 8. A method for producing a high-strength concrete material according to claim 3, wherein the nano zirconia coating thickness in the step (2) is 60 μm.
  9. 9. A method for producing a high-strength concrete material according to claim 3, wherein the curing temperature in the curing chamber in the step (2) is 21 ℃ and the relative humidity is 98%, and the curing temperature in the air is 20 ℃ and the relative humidity is 65%.

Description

Preparation method and texture process of high-strength concrete material Technical Field The invention relates to the technical field of concrete materials, in particular to a preparation method and a texture process of a high-strength concrete material. Background Natural stone is a non-renewable resource, and resin-based artificial stone and ordinary cement-based stone-like blocks are developed in the industry in order to seek alternative schemes. The resin-based material is easy to age, yellow and deform under long-term outdoor exposure, and the durability of the resin-based material is difficult to meet the long-term service requirement of the building outer facade. The common concrete stone-like product has the technical defects of rigid and repeated texture patterns, single color level and easy fading due to the limitation of the forming process, has obvious difference between visual artistic effect and natural stone, and has limited market acceptance. Therefore, development of a novel building material which can achieve both excellent decoration, ultra-high mechanical property and excellent durability and realize efficient recycling of large solid wastes has become an urgent technical requirement for industry development. Aiming at the comprehensive requirements, the invention aims to develop the high-fidelity mineral-based natural texture concrete block through innovation and process integration of a material system. Disclosure of Invention The invention aims to provide a preparation method and a texture process of a high-strength concrete material, so as to solve the problems in the prior art. In order to solve the technical problems, the invention provides a high-strength concrete material which is a brick prepared by embossing 80% of base layer slurry and 20% of surface layer slurry through a die; The base layer slurry comprises 180-220 parts of basalt coarse aggregate, 90-110 parts of basalt medium aggregate, 70-90 parts of fine aggregate, 1.5-3.5 parts of nano kaolin, 10-20 parts of granulated blast furnace slag powder, 5-10 parts of silica fume, 80-100 parts of activated steel slag gel, 35-40 parts of mixing water, 0.3-0.8 part of water reducer, 0.05-0.15 part of retarder and 0.1-0.3 part of water retention agent; The surface layer slurry comprises 20 parts of base layer slurry as a base material, 0.8-1.4 parts of ferric oxide pigment pretreated by a silane coupling agent KH-570, 0.5-1.0 parts of 800-mesh mica powder and 0.06-0.12 parts of polycarboxylic acid water reducer. Further, the fine aggregate comprises secondary fly ash, regenerated glass powder with the particle size of 2mm and cationic etherified starch. Further, the preparation method of the activated steel slag gel material comprises the steps of ball milling and alkali excitation of dry converter steel slag. Further, a preparation method of the high-strength concrete material comprises the following preparation steps: (1) Adding dry converter slag into a planetary ball mill to obtain steel slag powder, mixing and stirring the steel slag powder and a compound alkali-exciting agent A, sealing, standing and curing for 24 hours to obtain activated steel slag gel, mixing secondary fly ash and regenerated glass powder, adding the mixture into the ball mill to grind to obtain compound fine powder, coating the compound fine powder with a cationic etherified starch aqueous solution, stirring and treating the solution and the powder at a mass ratio of 4.5-5.5:100 for 30 minutes at 75 ℃, and then drying and scattering to obtain fine aggregate; (2) 180-220 parts of coarse aggregate, 90-110 parts of aggregate, 70-90 parts of fine aggregate, 1.5-3.5 parts of nano kaolin, 10-20 parts of granulated blast furnace slag powder and 5-10 parts of silica fume are put into a stirrer to be dry-mixed for 60s, then 80-100 parts of activated steel slag gel and solution are added, the solution is prepared by mixing and dissolving 0.3-0.8 part of water reducer, 0.05-0.15 part of retarder, 0.1-0.3 part of water retention agent and 35-40 parts of mixing water, stirring for 60s at a slow speed, stirring for 180s at a fast speed, obtaining uniform base layer slurry, a proper amount of base layer slurry is divided into 20 equal parts according to weight, the base layer is used as 20 base materials, 0.8-1.4 parts of iron oxide pigment pretreated by silane coupling agent KH-570 and 0.5-1.0 part of 800 mesh mica powder are added, simultaneously 0.06-0.12 part of water reducer is added, the surface layer slurry is prepared, when the surface layer slurry is molded, the surface layer slurry is poured, the slurry is prepared, the slurry is 80% of the total volume of the slurry is poured in a mold, the block is stirred for 80% of the total volume, the surface of the slurry is kept for the block is subjected to vibration curing, then the block is kept for the impression, and the wet curing is carried out for 28 h, after the block is kept for the same, after the surface i