CN114409356A - Improved lime material for repairing wall of legacy building and preparation method thereof - Google Patents
Improved lime material for repairing wall of legacy building and preparation method thereof Download PDFInfo
- Publication number
- CN114409356A CN114409356A CN202210099055.7A CN202210099055A CN114409356A CN 114409356 A CN114409356 A CN 114409356A CN 202210099055 A CN202210099055 A CN 202210099055A CN 114409356 A CN114409356 A CN 114409356A
- Authority
- CN
- China
- Prior art keywords
- lime
- lime material
- repairing
- building
- micro powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 79
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 79
- 239000004571 lime Substances 0.000 title claims abstract description 79
- 239000000463 material Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 34
- 229920003086 cellulose ether Polymers 0.000 claims abstract description 27
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims abstract description 22
- 229930006000 Sucrose Natural products 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 229960004793 sucrose Drugs 0.000 claims abstract description 22
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 21
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 21
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 21
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000000498 ball milling Methods 0.000 claims abstract description 11
- 241000276489 Merlangius merlangus Species 0.000 claims abstract description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 24
- 239000011575 calcium Substances 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 8
- 239000005720 sucrose Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 5
- 235000012241 calcium silicate Nutrition 0.000 claims description 5
- -1 hydroxymethyl propyl Chemical group 0.000 claims description 4
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 claims description 3
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 229910021534 tricalcium silicate Inorganic materials 0.000 claims description 3
- 235000019976 tricalcium silicate Nutrition 0.000 claims description 3
- 230000008439 repair process Effects 0.000 abstract description 8
- 101100399296 Mus musculus Lime1 gene Proteins 0.000 description 60
- 239000004570 mortar (masonry) Substances 0.000 description 48
- 238000012360 testing method Methods 0.000 description 27
- 230000008569 process Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 238000011068 loading method Methods 0.000 description 8
- 238000000465 moulding Methods 0.000 description 8
- 238000009740 moulding (composite fabrication) Methods 0.000 description 8
- 239000004576 sand Substances 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 230000002035 prolonged effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000036571 hydration Effects 0.000 description 5
- 238000006703 hydration reaction Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004572 hydraulic lime Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009418 renovation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 229960001436 calcium saccharate Drugs 0.000 description 1
- UGZVNIRNPPEDHM-SBBOJQDXSA-L calcium;(2s,3s,4s,5r)-2,3,4,5-tetrahydroxyhexanedioate Chemical compound [Ca+2].[O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O UGZVNIRNPPEDHM-SBBOJQDXSA-L 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- GRVDJDISBSALJP-UHFFFAOYSA-N methyloxidanyl Chemical group [O]C GRVDJDISBSALJP-UHFFFAOYSA-N 0.000 description 1
- 239000011416 natural hydraulic lime Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/10—Carbohydrates or derivatives thereof
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/54—Substitutes for natural stone, artistic materials or the like
- C04B2111/547—Imitating ancient compositions, e.g. mediaeval mortars; Compositions specially designed for restauration of ancient buildings or building elements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an improved lime material for repairing a wall of a legacy building and a preparation method thereof, wherein the lime material comprises the following components: 30-70 wt% of hydrated lime, 5-25 wt% of hydraulic component, 15-55 wt% of heavy calcium carbonate micro powder, 5-45 wt% of active micro powder, 0.05-0.2 wt% of cellulose ether and 0.05-0.4 wt% of cane sugar. The slaked lime, the hydraulic component, the coarse whiting micro powder and the active micro powder are mixed evenly according to the proportion, a ball mill is used for ball milling to obtain a mixture, and then the mixture is mixed with the cellulose ether and the cane sugar at a high speed to obtain the improved lime material. The invention properly improves the compressive strength and the flexural strength of the traditional lime on the basis of maintaining the excellent performance of the traditional lime by adding a small amount of hydraulic components into the traditional hydrated lime material, and prolongs the setting time of the improved lime material by adding cellulose ether and cane sugar, so that the setting time of the improved lime material can meet the requirements of the traditional masonry procedure of ancient buildings, and the normal operation of the traditional ancient building repair process is ensured.
Description
Technical Field
The invention belongs to ancient building repairing materials, and particularly relates to a modified lime material suitable for repairing a wall of a legacy building and a preparation method thereof.
Background
Lime is an important cementing material in ancient buildings preservation in China, is generally applied to parts such as foundations, walls, roofs, veneers and the like, but is used for various reasons such as war disorder, natural disasters, perennial climate and environment influence and the like, ancient building body materials are seriously damaged, a large number of ancient buildings fail all the year round, and the ancient buildings wait for maintenance. The ancient building maintenance engineering needs a large amount of lime binding materials, but the raw materials of high-quality limestone are in short supply, the production quality of the lime binding materials generally slides down, the lime is not a dominant material in the building industry, and the traditional sintering process of the ancient lime is basically lost, so that the ancient lime is also a realistic problem in the production of high-quality lime. Along with the increasing demand of building heritage protection, lime for repairing the building heritage is needed more urgently, so natural hydraulic lime is continuously applied to the field of ancient building repair, but as the setting time of the hydraulic lime is greatly shortened compared with that of the traditional lime, the building process of the traditional building wall is complex, the required construction time is longer, and a large amount of time for 'joint plowing' is needed after a silk-seam wall is built, so that the hydraulic lime cannot meet the requirements of the traditional construction process in the field of building repair.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an improved lime material for repairing the wall of the legacy building, which has better compressive strength and flexural strength and the setting time meets the requirements of construction procedures; the second object of the present invention is to provide a method for preparing the above improved lime material.
The technical scheme is as follows: the invention relates to an improved lime material for repairing a wall of a legacy building, which comprises the following raw materials in percentage by mass:
further, the hydrated lime includes at least 70wt% Ca (OH)2The fineness of the hydrated lime is 200-400 meshes.
Further, the hydraulic component comprises at least 79 wt% of powder consisting of tricalcium silicate and dicalcium silicate and at most 7.64 wt% of tricalcium aluminate based on the dry weight of the hydraulic component, and the balance is impurities.
Further, the coarse whiting micro powder is calcium carbonate.
Further, the active micro powder is granulated blast furnace slag with a specific surface area of 380-400 m2/kg。
Further, the cellulose ether is hydroxymethyl propyl cellulose, and the viscosity of the cellulose ether is 36000-50000mPa & s.
The lime material is used for repairing walls, so that clear requirements are required for the colors of raw materials of all components, the whiteness of the raw materials is more than 80, and preferably, the whiteness of the hydraulic component is more than or equal to 90; the whiteness of the heavy calcium micro powder is more than or equal to 95 percent; the whiteness of the active micro powder is more than or equal to 80; the whiteness of the cellulose ether is more than or equal to 80; the color value of the sucrose is less than or equal to 4000 IU; thereby controlling the whiteness of the obtained lime material to be more than 80, the free water content of the lime gel material to be less than or equal to 2.0 and the sieve residue of 90 mu m to be less than or equal to 1.0.
The preparation method of the improved lime material for repairing the wall of the legacy building comprises the following steps:
(1) uniformly mixing the hydrated lime, the hydraulic component, the coarse whiting micro powder and the active micro powder according to a proportion, and then carrying out ball milling by using a ball mill to obtain a mixture;
(2) and (3) putting the mixture, cellulose ether and cane sugar into a high-speed mixer according to a certain proportion, and uniformly mixing to obtain the improved lime material.
Further, in the step (1), the ball milling time is 5-10 min; the rotating speed of the ball mill is 100-400 rpm; in the step (2), the rotating speed of the mixer is 600-1200 rpm.
In the components of the invention, the added hydraulic component can react with water to generate a gelled component with higher strength, thereby improving the early compressive strength, the flexural strength and the water resistance of the slurry; heavy carbon micropowder as dopingThe material combination has good particle filling effect, can effectively improve the fluidity of the slurry, and reduce the water consumption of the slurry, thereby improving the compactness of the slurry, and further playing a role in optimizing the workability of fresh slurry and improving the mechanical strength of a hardened body; the active micro powder has potential gelling property, and SiO in the active micro powder2And A12O3Can react with the hydration product (calcium hydroxide) of the slurry for the second time to generate hydrated calcium silicate and hydrated calcium aluminate gel, can further increase the gelling component of the slurry and optimize the composition of the slurry.
The mechanism of the invention for prolonging the coagulation time is as follows: the cellulose ether can be adsorbed on the surface of the granular substance to prevent the contact of a hydraulic component and moisture, thereby delaying the hydration process and prolonging the setting time of the system; the sucrose molecules can prevent further growth of hydration products (hydrated calcium silicate), and the generated calcium saccharate can be adsorbed to the surfaces of hydration substance particles, so that repulsion among the particles is increased, and the particles are difficult to agglomerate, thereby delaying the hydration process of hydraulic components and further prolonging the setting time. Therefore, the setting time of the system can be greatly delayed by the combined action of the cellulose ether and the cane sugar.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:
(1) according to the invention, a small amount of hydraulic component is added into the traditional hydrated lime material, so that the compressive strength and the breaking strength of the traditional lime are moderately improved on the basis of maintaining the excellent performance of the traditional lime, and the defects that the quality of the existing lime is low, and the strength and the durability can not meet the requirements of repairing the legacy wall of the Chinese building are overcome.
(2) According to the invention, the cellulose ether and the sucrose are added to prolong the setting time of the improved lime material, so that the setting time of the improved lime material can meet the requirements of the traditional masonry procedure of the ancient buildings, and the normal operation of the traditional ancient building repair process is ensured.
(3) The improved lime material provided by the invention adopts hydrated lime, a hydraulic component, heavy calcium micropowder and active micropowder as main cementing materials, cellulose ether and cane sugar as main additives, the cost of each component of the used raw materials is lower, the improved lime material has good adaptability to blue bricks used for building legacy walls, the preparation process of the material is simple, and the improved lime material is convenient for construction application and later popularization of ancient buildings.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the following examples.
According to the invention, the optimal compounding research of hydrated lime is carried out by referring to the definition of European standard BS EN 459-1-2015 on hydraulic lime HL and the technical index requirement, and the optimal mixing proportion of the improved lime material is finally determined through composition design and experimental test research.
The hydrated lime, hydraulic component, heavy calcium micropowder, active micropowder and cellulose ether used in this example are all commercially available products, sucrose is a food product, and the chemical composition of the main gelling material is shown in table 1:
TABLE 1 raw material chemical composition (XRF)
Slaked lime is a common commercial product, Ca (OH)2More than or equal to 70 percent and the fineness is 300 meshes.
The total content of tricalcium silicate and dicalcium silicate in the hydraulic component is more than 79 percent, the content of tricalcium aluminate is less than or equal to 7.64 percent, the content of impurities is less than or equal to 1.95 percent, and the whiteness is more than or equal to 90 percent.
The heavy calcium micropowder is white powder prepared by processing limestone with a grinder, the main component is calcium carbonate, and the whiteness is more than or equal to 95%.
The active micro powder is ground white granulated blast furnace slag with whiteness not less than 80 and specific surface area more than 380m2/kg，
The cellulose ether is hydroxymethyl propyl cellulose, the hydroxypropyl content is 7-12%, the methoxyl content is 17-24%, the viscosity is 36000-50000 mPa.s, and the whiteness is more than or equal to 80.
The sugar degree of the cane sugar is more than or equal to 98 percent, and the color value is less than or equal to 4000 IU.
Example 1
An improved lime material for repairing a wall of a building legacy, which comprises the following components in percentage by mass:
uniformly mixing the hydrated lime, the hydraulic component, the coarse whiting micro powder and the active micro powder according to the proportion, and then ball-milling for 5min by using a ball mill, wherein the rotating speed of the ball mill is 100rpm to obtain a mixture; and (3) putting the obtained mixture, cellulose ether and cane sugar into a high-speed mixer, and uniformly mixing at the mixing rotation speed of 600rpm to obtain the optimized lime cementing material.
According to the molding requirement of a mortar test piece in European standard BS EN196-1-2005, the water-to-rubber ratio is 0.55, the rubber-to-sand ratio is 1: and 3, testing the fluidity of the mortar after stirring and forming, loading the mortar into a mold, naturally curing the mortar to a specified age, taking out the mortar, and then demolding the mortar to test the flexural strength and the compressive strength. Meanwhile, GBT 1346-. The basic properties of the modified lime material prepared in example 1 are shown in table 2.
Table 2 basic properties of the modified lime material prepared in example 1
As can be seen from Table 2, the initial setting time and the final setting time both exceed 6 hours, and the use requirements of the ancient building masonry repair process are met.
Example 2
An improved lime material for repairing a wall of a building legacy, which comprises the following components in percentage by mass:
uniformly mixing the hydrated lime, the hydraulic component, the coarse whiting micro powder and the active micro powder according to the proportion, and then ball-milling for 8min by using a ball mill, wherein the rotating speed of the ball mill is 200rpm to obtain a mixture; and (3) putting the obtained mixture, cellulose ether and cane sugar into a high-speed mixer, and uniformly mixing at the mixing rotation speed of 800rpm to obtain the optimized lime cementing material.
According to the molding requirement of a mortar test piece in European standard BS EN196-1-2005, the water-to-rubber ratio is 0.55, the rubber-to-sand ratio is 1: and 3, testing the fluidity of the mortar after stirring and forming, loading the mortar into a mold, naturally curing the mortar to a specified age, taking out the mortar, and then demolding the mortar to test the flexural strength and the compressive strength. Meanwhile, GBT 1346-. The basic properties of the modified lime material prepared in example 1 are shown in table 3.
Table 3 basic properties of the modified lime material prepared in example 2
As can be seen from Table 3, the initial setting time and the final setting time meet the use requirements of the ancient building masonry renovation process.
Example 3
An improved lime material for repairing a wall of a building legacy, which comprises the following components in percentage by mass:
uniformly mixing the hydrated lime, the hydraulic component, the coarse whiting micro powder and the active micro powder according to the proportion, and then ball-milling for 10min by using a ball mill, wherein the rotating speed of the ball mill is 400rpm to obtain a mixture; and (3) putting the obtained mixture, cellulose ether and cane sugar into a high-speed mixer, and uniformly mixing at the mixing rotation speed of 1000rpm to obtain the optimized lime cementing material.
According to the molding requirement of a mortar test piece in European standard BS EN196-1-2005, the water-to-rubber ratio is 0.55, the rubber-to-sand ratio is 1: and 3, testing the fluidity of the mortar after stirring and forming, loading the mortar into a mold, naturally curing the mortar to a specified age, taking out the mortar, and then demolding the mortar to test the flexural strength and the compressive strength. Meanwhile, GBT 1346-. The basic properties of the modified lime material prepared in example 1 are shown in table 4.
Table 4 basic properties of the modified lime material prepared in example 3
As can be seen from Table 4, the initial setting time and the final setting time meet the use requirements of the ancient building masonry repair process.
Example 4
An improved lime material for repairing a wall of a building legacy, which comprises the following components in percentage by mass:
uniformly mixing the hydrated lime, the hydraulic component, the coarse whiting micro powder and the active micro powder according to the proportion, and then ball-milling for 5min by using a ball mill, wherein the rotating speed of the ball mill is 300rpm to obtain a mixture; and (3) putting the obtained mixture, cellulose ether and cane sugar into a high-speed mixer, and uniformly mixing at the mixing rotation speed of 1200rpm to obtain the optimized lime cementing material.
According to the molding requirement of a mortar test piece in European standard BS EN196-1-2005, the water-to-rubber ratio is 0.55, the rubber-to-sand ratio is 1: and 3, testing the fluidity of the mortar after stirring and forming, loading the mortar into a mold, naturally curing the mortar to a specified age, taking out the mortar, and then demolding the mortar to test the flexural strength and the compressive strength. Meanwhile, GBT 1346-. The basic properties of the modified lime material prepared in example 1 are shown in table 5.
Table 5 basic properties of the modified lime material prepared in example 4
As can be seen from Table 5, the initial setting time and the final setting time meet the use requirements of the ancient building masonry repair process.
Example 5
An improved lime material for repairing a wall of a building legacy, which comprises the following components in percentage by mass:
uniformly mixing the hydrated lime, the hydraulic component, the coarse whiting micro powder and the active micro powder according to the proportion, and then ball-milling for 5min by using a ball mill, wherein the rotating speed of the ball mill is 400rpm to obtain a mixture; and (3) putting the obtained mixture, cellulose ether and cane sugar into a high-speed mixer, and uniformly mixing at the mixing rotation speed of 600rpm to obtain the optimized lime cementing material.
According to the molding requirement of a mortar test piece in European standard BS EN196-1-2005, the water-to-rubber ratio is 0.55, the rubber-to-sand ratio is 1: and 3, testing the fluidity of the mortar after stirring and forming, loading the mortar into a mold, naturally curing the mortar to a specified age, taking out the mortar, and then demolding the mortar to test the flexural strength and the compressive strength. Meanwhile, GBT 1346-. The basic properties of the modified lime material prepared in example 1 are shown in table 6.
Table 6 basic properties of the modified lime material prepared in example 5
As can be seen from Table 6, the initial setting time and the final setting time meet the use requirements of the ancient building masonry repair process.
Example 6
An improved lime material for repairing a wall of a building legacy, which comprises the following components in percentage by mass:
uniformly mixing the hydrated lime, the hydraulic component, the coarse whiting micro powder and the active micro powder according to the proportion, and then ball-milling for 8min by using a ball mill, wherein the rotating speed of the ball mill is 400rpm to obtain a mixture; and (3) putting the obtained mixture, cellulose ether and cane sugar into a high-speed mixer, and uniformly mixing at the mixing rotation speed of 800rpm to obtain the optimized lime cementing material.
According to the molding requirement of a mortar test piece in European standard BS EN196-1-2005, the water-to-rubber ratio is 0.55, the rubber-to-sand ratio is 1: and 3, testing the fluidity of the mortar after stirring and forming, loading the mortar into a mold, naturally curing the mortar to a specified age, taking out the mortar, and then demolding the mortar to test the flexural strength and the compressive strength. Meanwhile, GBT 1346-. The basic properties of the modified lime material prepared in example 1 are shown in table 7.
Table 7 basic properties of the modified lime material prepared in example 6
As can be seen from Table 7, the initial setting time and the final setting time meet the use requirements of the ancient building masonry renovation process.
Referring to the results of examples 1-6, the flexural strength and compressive strength of each example are satisfactory, and when 0.1 wt% of cellulose ether is added, the initial setting time of the original system is slightly increased, and the final setting time is prolonged by about 0.5h, and when 0.05 wt% of sucrose is added, the initial setting time and the final setting time of the original system can be prolonged by about 4 h, and the setting time of the original system can be greatly prolonged by the combined action of the two, and the final setting time of the system under the optimal mixing amount can be prolonged from 2-3 h to 17-19 h.
Comparative example 1
The mass percentage of the lime material is as follows:
the concrete test is the same as example 1, referring to the molding requirement of a mortar test piece in European standard BS EN196-1-2005, the water-to-glue ratio is 0.55, the glue-to-sand ratio is 1: and 3, testing the fluidity of the mortar after stirring and forming, loading the mortar into a mold, naturally curing the mortar to a specified age, taking out the mortar, and then demolding the mortar to test the flexural strength and the compressive strength. Meanwhile, GBT 1346-. The basic properties of the modified lime material prepared in comparative example 1 are shown in table 8.
TABLE 8 basic Properties of the modified lime material prepared in comparative example 1
In comparative example 1, the setting time is too short to meet the requirements of the construction process of the historic building.
Comparative example 2
The mass percentage of the lime material is as follows:
the concrete test is the same as example 1, referring to the molding requirement of a mortar test piece in European standard BS EN196-1-2005, the water-to-glue ratio is 0.55, the glue-to-sand ratio is 1: and 3, testing the fluidity of the mortar after stirring and forming, loading the mortar into a mold, naturally curing the mortar to a specified age, taking out the mortar, and then demolding the mortar to test the flexural strength and the compressive strength. Meanwhile, GBT 1346-. The basic properties of the modified lime material prepared in comparative example 2 are shown in table 9.
TABLE 9 basic Properties of the modified lime material prepared in comparative example 2
The setting time of comparative example 2 is slightly prolonged, but still cannot meet the requirements of the ancient building construction process.
In conclusion, when the cellulose ether and the sucrose are not added or only the cellulose ether is added into the system, the obtained lime material cannot well achieve the effect of prolonging the setting time, and the cellulose ether and the sucrose are added simultaneously, so that the setting time of the improved lime material can be prolonged, the synergistic effect is achieved, and the requirements of the traditional masonry process of ancient buildings can be met.
Claims (10)
1. The improved lime material for repairing the wall of the legacy building is characterized by comprising the following raw materials in percentage by mass:
2. the improved lime material for repairing the wall of the legacy building of claim 1, wherein: the slaked lime includes at least 70wt% Ca (OH)2The fineness of the hydrated lime is 200-400 meshes.
3. The improved lime material for repairing the wall of the legacy building of claim 1, wherein: the hydraulic component comprises at least 79 wt% of powder consisting of tricalcium silicate and dicalcium silicate, at most 7.64 wt% of tricalcium aluminate and the balance of impurities based on the dry weight of the hydraulic component.
4. The improved lime material for repairing the wall of the legacy building of claim 1, wherein: the heavy calcium micro powder is calcium carbonate.
5. The improved lime material for repairing the wall of the legacy building of claim 1, wherein: the active micro powder is granulated blast furnace slag with a specific surface area of 380-400 m2/kg。
6. The improved lime material for repairing the wall of the legacy building of claim 1, wherein: the cellulose ether is hydroxymethyl propyl cellulose, and the viscosity of the cellulose ether is 36000-50000mPa & s.
7. The improved lime material for repairing the wall of the legacy building of claim 1, wherein: the whiteness of the hydraulic component is more than or equal to 90; the whiteness of the heavy calcium micro powder is more than or equal to 95 percent; the whiteness of the active micro powder is more than or equal to 80; the whiteness of the cellulose ether is more than or equal to 80; the color value of the sucrose is less than or equal to 4000 IU.
8. A method for preparing the improved lime material for repairing the wall of the building legacy of claim 1, comprising the steps of:
(1) uniformly mixing the hydrated lime, the hydraulic component, the coarse whiting micro powder and the active micro powder according to a proportion, and then carrying out ball milling by using a ball mill to obtain a mixture;
(2) and (3) putting the mixture, cellulose ether and cane sugar into a high-speed mixer according to a certain proportion, and uniformly mixing to obtain the improved lime material.
9. The method for preparing the improved lime material for repairing the wall of the legacy building as claimed in claim 8, wherein in the step (1), the ball milling time is 5-10 min; the rotation speed of the ball mill is 100-400 rpm.
10. The method for preparing the improved lime material for repairing the remains of the building according to claim 8, wherein in the step (2), the rotating speed of the mixer is 600-1200 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099055.7A CN114409356A (en) | 2022-01-27 | 2022-01-27 | Improved lime material for repairing wall of legacy building and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099055.7A CN114409356A (en) | 2022-01-27 | 2022-01-27 | Improved lime material for repairing wall of legacy building and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114409356A true CN114409356A (en) | 2022-04-29 |
Family
ID=81279793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210099055.7A Pending CN114409356A (en) | 2022-01-27 | 2022-01-27 | Improved lime material for repairing wall of legacy building and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114409356A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008201643A (en) * | 2007-02-22 | 2008-09-04 | Denki Kagaku Kogyo Kk | Rapid-hardening repair mortar and method of repair using it |
| US20110311308A1 (en) * | 2007-08-13 | 2011-12-22 | Fred Brouillette | Stabilization of Soils Using a Proportional Lime Slurry |
| CN104829201A (en) * | 2015-04-21 | 2015-08-12 | 东南大学 | Protection brick and stone ancient building repair lime bonding material |
-
2022
- 2022-01-27 CN CN202210099055.7A patent/CN114409356A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008201643A (en) * | 2007-02-22 | 2008-09-04 | Denki Kagaku Kogyo Kk | Rapid-hardening repair mortar and method of repair using it |
| US20110311308A1 (en) * | 2007-08-13 | 2011-12-22 | Fred Brouillette | Stabilization of Soils Using a Proportional Lime Slurry |
| CN104829201A (en) * | 2015-04-21 | 2015-08-12 | 东南大学 | Protection brick and stone ancient building repair lime bonding material |
Non-Patent Citations (1)
| Title |
|---|
| 江苏省建筑工程局组织编写: "《建筑装饰材料》", 30 April 1992, 中国建筑工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101844899B (en) | Filling and binding material composition | |
| CN111233364A (en) | Composite mineral admixture, preparation method thereof and artificial sand concrete material containing composite mineral admixture | |
| CN113105152B (en) | Temperature-control anti-cracking waterproof agent | |
| CN111792902B (en) | High-strength water-resistant phosphogypsum composite cementing material and preparation method thereof | |
| KR102349613B1 (en) | Cement Admixture Composite for Rapid Expansion Hardening Type, On-site Hydration Concrete Mat Using the Cement Admixture Composite and Construction Method Using the Mat | |
| CN114276096A (en) | Dry mixing material for square-material type inorganic artificial stone, inorganic artificial stone and preparation method | |
| CN114409356A (en) | Improved lime material for repairing wall of legacy building and preparation method thereof | |
| CN116143461B (en) | C50 self-compaction shrinkage-compensating concrete and preparation method thereof | |
| CN115353309B (en) | Water-resistant magnesium oxychloride cementing material and preparation method thereof | |
| CN111320438A (en) | Green environment-friendly concrete and preparation method thereof | |
| CN103771801A (en) | Dry-mixed ground mortar doped with bayer process red mud and application method thereof | |
| CN114477873B (en) | Recycled aggregate self-compacting concrete and preparation method thereof | |
| CN111302748B (en) | Filling cementing material utilizing tailing surface modification technology and preparation method thereof | |
| CN112341025B (en) | Regenerated micro-powder admixture, preparation method thereof and application thereof as cement substitute | |
| CN114751720A (en) | Low-shrinkage ceramic product and preparation method thereof | |
| CN113754349A (en) | Nano modified glutinous rice mortar for historic building masonry structure and preparation method thereof | |
| CN1215009C (en) | White silicate cement and its production method | |
| CN1056594C (en) | Batch for high performance concrete and process thereof | |
| CN108609989A (en) | A kind of novel self-heat preserving bearing composite block and preparation method thereof | |
| CN115466077B (en) | High-performance phosphogypsum self-leveling agent and application method thereof | |
| CN115010439B (en) | Crack-resistant large-volume tuff concrete and preparation method thereof | |
| CN114394813B (en) | Anti-freezing super-sulfur cement concrete and preparation method thereof | |
| CN112028581B (en) | Stone chip concrete for steel die and preparation method thereof | |
| CN115403345B (en) | Surface treatment method of gypsum-based self-leveling mortar terrace | |
| CN115324303B (en) | Gypsum-based self-leveling mortar terrace interface treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220429 |