CN113003987A - Raw soil wall modified masonry slurry and preparation method thereof - Google Patents
Raw soil wall modified masonry slurry and preparation method thereof Download PDFInfo
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- CN113003987A CN113003987A CN202110518611.5A CN202110518611A CN113003987A CN 113003987 A CN113003987 A CN 113003987A CN 202110518611 A CN202110518611 A CN 202110518611A CN 113003987 A CN113003987 A CN 113003987A
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- 239000002689 soil Substances 0.000 title claims abstract description 176
- 239000002002 slurry Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000007613 slurry method Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000003292 glue Substances 0.000 claims abstract description 55
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 42
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000839 emulsion Substances 0.000 claims abstract description 42
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 42
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 42
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 42
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 42
- 235000009566 rice Nutrition 0.000 claims abstract description 42
- 241000209094 Oryza Species 0.000 claims description 41
- 238000003756 stirring Methods 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 31
- 238000005303 weighing Methods 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 20
- 239000001828 Gelatine Substances 0.000 claims description 15
- 229920000159 gelatin Polymers 0.000 claims description 15
- 235000019322 gelatine Nutrition 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 101
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 238000005452 bending Methods 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 20
- 238000001723 curing Methods 0.000 description 14
- 238000001125 extrusion Methods 0.000 description 10
- 235000013339 cereals Nutrition 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007676 flexural strength test Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012770 industrial material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Images
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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/28—Polysaccharides 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to raw soil wall modified masonry slurry and a preparation method thereof, belonging to the technical field of building materials. The slurry comprises the following components: raw soil, glutinous rice glue, acrylic emulsion, instant glue powder, hydroxypropyl methyl cellulose and water. The modified masonry slurry has good mechanical property, after the modified masonry slurry is used for building a raw soil wall, the shear strength of the modified slurry can be improved by 53.8%, meanwhile, the compression resistance and the bending resistance of a test block prepared from the slurry are respectively improved by 31.4% and 23.5%, and the ductility and the deformability of a raw soil test piece are improved. The mud can improve the bearing capacity and the anti-seismic performance of the raw soil building in practical application, reduce the life and property loss of residents, and can be returned to the field for use after the service of dismantling or abandonment collapse and the like of the raw soil building due to the expiration of the design service life, thereby not polluting the soil. The slurry preparation method is simple, easy to operate, wide and easily available in raw material source, low in cost and suitable for expanded production.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to raw soil wall body modified masonry slurry and a preparation method thereof.
Background
The raw soil building is still widely used in vast villages and towns due to the advantages of local materials, convenient construction, low material cost, good thermal performance, low energy consumption, environmental protection, recyclable building materials and the like. Especially in villages and towns in southwest and northwest provinces of China, the native buildings will exist for a long time due to the limitation of natural environment and economic conditions. However, due to the characteristics of discreteness and brittleness of the raw soil material, the raw soil material has poor physical and mechanical properties, and further influences the durability and the seismic performance of the raw soil building house. The phenomenon after the earthquake of the past times shows that the damage form of the raw soil wall body is mainly shear damage along a mud mortar joint, the main reason is that the cohesiveness between the mud and the raw soil bricks is not enough, the mud is used as a main material for building the raw soil wall body and has an important effect on the integral stress performance of a house, and the improvement of the shear strength between the mud and the raw soil bricks has an important significance on the improvement of the bearing capacity and the anti-seismic performance of the raw soil wall body.
At present, modification of raw soil materials is mainly physical and chemical composite modification, industrial materials such as cement, quicklime, fly ash and slag are usually added into raw soil, and the physical and mechanical properties of the raw soil materials and the bonding property of slurry can be improved after modification, but the defect is that the doped industrial materials possibly contain heavy metal elements such as nickel and nickel, the elements pollute the soil and have adverse effects on the nutrient content and the physical structure of the soil, and after the raw soil building is dismantled or abandoned and collapsed due to the expiration of the design service life, the abandoned modified raw soil materials cannot be directly returned to the field for use, the traditional advantages of the raw soil building are lost, and the method does not conform to the concept of sustainable development of rural areas in the new era.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a raw soil wall modified masonry slurry; the second purpose is to provide a preparation method of the raw soil wall body modified masonry slurry.
In order to achieve the purpose, the invention provides the following technical scheme:
1. the raw soil wall modified masonry slurry comprises the following components in parts by mass: 300 parts of raw soil, 12-30 parts of glutinous rice glue, 0.6-1.8 parts of acrylic emulsion, 2.4-3.6 parts of instant rubber powder, 3-4.5 parts of hydroxypropyl methyl cellulose and 225 parts of water 155-.
Preferably, the particle size of the raw soil is less than or equal to 0.5 mm.
Preferably, the acrylic emulsion has a solid content of 49-51% and a pH value of 8-9.
2. The preparation method of the raw soil wall modified masonry slurry comprises the following steps:
(1) weighing 300 parts of raw soil, 12-30 parts of glutinous rice glue, 0.6-1.8 parts of acrylic emulsion, 2.4-3.6 parts of instant rubber powder, 3-4.5 parts of hydroxypropyl methyl cellulose and 225 parts of water 155-containing material according to the mass ratio;
(2) respectively dissolving the glutinous rice glue, the acrylic emulsion, the instant glue powder and the hydroxypropyl methyl cellulose in water, then respectively adding the solutions into raw soil, and adding water in the mixing process until slurry meeting the required viscosity is obtained.
Preferably, in the step (2), 12-30 parts of glutinous rice glue is dissolved in 40-80 parts of water, 0.6-1.8 parts of acrylic emulsion is dissolved in 5-10 parts of water, 2.4-3.6 parts of instant glue powder is dissolved in 15-20 parts of water, 3-4.5 parts of hydroxypropyl methyl cellulose is dissolved in 25-35 parts of water, then the solutions are respectively added into 300 parts of raw soil, and 70-90 parts of water is added in total during the stirring and uniform mixing process, so that the finishing agent is obtained.
Preferably, in the step (2), after each solution is added to the raw soil, the raw soil is stirred and mixed uniformly.
The invention has the beneficial effects that: the modified masonry slurry has good mechanical property, after the modified masonry slurry is used for building a raw soil wall, the shear strength of the modified masonry slurry can be improved by 53.8%, meanwhile, test blocks prepared from the modified masonry slurry are respectively improved by 31.4% and 23.5% in compression resistance and bending resistance, and the ductility and the deformability of a raw soil test piece are improved. The mud can improve the bearing capacity and the anti-seismic performance of the raw soil building in practical application, reduce the life and property loss of residents, and can be returned to the field for use after the service of dismantling or abandonment collapse and the like of the raw soil building due to the expiration of the design service life, thereby not polluting the soil. The slurry preparation method is simple, easy to operate, wide and easily available in raw material source, low in cost and suitable for expanded production.
According to the invention, the raw soil, the glutinous rice glue, the acrylic emulsion, the instant rubber powder, the hydroxypropyl methyl cellulose and the water are combined according to a specific ratio, so that the components can play a synergistic effect to the greatest extent, and the shear strength between the slurry and the raw soil brick can be improved. Mud can appear stirring inhomogeneous condition at the mix in-process, the inside a large amount of holes that can produce of soil particle, mix glutinous rice glue can increase the inside granule of soil material and the cementibility between the granule, improve the degree of consistency of soil particle simultaneously, the protective colloid of instant rubber powder has very strong hydrophilic characteristic simultaneously, the vinyl functional group of plasticization in structure itself has, in addition its dispersion infiltration effect, the loose soil particle of polymer film effective parcel that forms after dissolving in water, and then make its inside contact inseparable, can further fill because of the inhomogeneous hole that produces of glutinous rice glue stirring. In the test, when the mixing amount of the glutinous rice glue is too much, the viscosity among the soil particles is larger, the soil particles are easy to be sticky in the mixing process, so that the mud is not full enough to generate pores during building, and is easy to be stressed unevenly when stressed, thereby further reducing the strength; when the mixing amount of the instant rubber powder is too much, part of the instant rubber powder can not be completely dissolved in a proper amount of water, and the surface of the prepared test block can be separated out, so that the appearance is influenced, and the strength of the slurry is reduced. In addition, in the previous wall body test, due to the nature of the raw soil material, the mud layer of the raw soil wall has the phenomenon of drying shrinkage cracking, the acrylic emulsion can fill and repair micro cracks of the raw soil base material structure, the structural defects of the material are reduced, the material compaction degree is increased, the crack cracking is delayed, the mixing amount of the acrylic emulsion is not too much, on one hand, the cost is increased, and on the other hand, the effect of delaying the crack cracking is limited; the hydroxypropyl methyl cellulose is a water-soluble organic polymer, the structural formula of the hydroxypropyl methyl cellulose is provided with hydrophilic groups, a flexible polymer with a space network structure is formed when the hydroxypropyl methyl cellulose is dissolved in water, the slurry can be agglomerated into a whole under the combined action of the glutinous rice glue and the instant gelatine powder, and the structural hydroxyl groups and oxygen atoms on ether bonds are associated with water molecules to form hydrogen bonds, so that the free water is changed into bound water, the slurry has better workability, and the construction convenience is improved. If the amount of the hydroxypropyl methyl cellulose is too much, the soft polymers in the raw soil material are increased, and the compression strength and the breaking strength of the slurry are reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a morphology chart of a common raw soil test piece prepared in a control group and a modified raw soil test piece prepared in examples 1 to 9;
fig. 2 is a morphological diagram after shear failure of the ordinary raw soil test piece prepared in the control group and the modified raw soil test pieces prepared in examples 1 to 9;
fig. 3 is a graph showing the shear strength test results of the ordinary raw soil test piece prepared in the control group and the modified raw soil test pieces prepared in examples 1 to 9;
FIG. 4 is a view showing the shape after being damaged by pressure of test pieces prepared from the modified masonry slurry of examples 1 to 9 and test pieces prepared from a general masonry slurry;
FIG. 5 is a diagram showing the fracture-resistant state of test pieces prepared from the modified masonry slurry of examples 1 to 9 and test pieces prepared from a normal masonry slurry;
FIG. 6 is a graph showing the results of tests on the compression resistance of test pieces prepared from the modified masonry slurry of examples 1 to 9 and test pieces prepared from the ordinary masonry slurry;
FIG. 7 is a graph showing the results of the flexural strength test of test pieces prepared from the modified masonry slurry of examples 1 to 9 and test pieces prepared from the ordinary masonry slurry.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Control group
The common masonry slurry comprises the following components: 300g of raw soil with the particle size less than or equal to 0.5mm and 0.9g of wheat straw.
The common raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm and 0.9g of wheat straw, adding 210g of water, and stirring to prepare the common masonry slurry.
(4) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the common masonry slurry prepared in the step (3), and curing indoors for 7 days until the cakes are dried to obtain a common raw soil test piece.
Example 1
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the grain diameter less than or equal to 0.5mm, 12g of glutinous rice glue, 0.6g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 2.4g of instant gelatine powder, 3g of hydroxypropyl methyl cellulose and 155g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 12g of glutinous rice glue, 0.6g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 2.4g of instant gelatine powder, 3g of hydroxypropyl methyl cellulose and 155g of water;
(4) dissolving 12g of glutinous rice glue in 40g of water, dissolving 0.6g of acrylic emulsion in 5g of water, dissolving 2.4g of instant rubber powder in 15g of water, dissolving 3g of hydroxypropyl methyl cellulose in 25g of water, then respectively adding the solutions into 300g of raw soil, uniformly stirring after each solution is added into the raw soil, and adding 70g of water in total during the uniformly stirring process to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
Example 2
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the grain diameter less than or equal to 0.5mm, 12g of glutinous rice glue, 1.2g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3g of instant gelatine powder, 3.75g of hydroxypropyl methyl cellulose and 165g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 12g of glutinous rice glue, 1.2g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3g of instant gelatine powder, 3.75g of hydroxypropyl methyl cellulose and 165g of water;
(4) dissolving 12g of glutinous rice glue in 40g of water, dissolving 1.2g of acrylic emulsion in 5g of water, dissolving 3g of instant glue powder in 20g of water, dissolving 3.75g of hydroxypropyl methyl cellulose in 30g of water, then respectively adding the solutions into 300g of raw soil, uniformly stirring after each solution is added into the raw soil, and adding 70g of water in total during the uniformly stirring process to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
Example 3
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the grain diameter less than or equal to 0.5mm, 12g of glutinous rice glue, 1.8g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3.6g of instant rubber powder, 4.5g of hydroxypropyl methyl cellulose and 195g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 12g of glutinous rice glue, 1.8g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3.6g of instant gelatine powder, 4.5g of hydroxypropyl methyl cellulose and 195g of water;
(4) dissolving 12g of glutinous rice glue in 40g of water, dissolving 1.8g of acrylic emulsion in 10g of water, dissolving 3.6g of instant glue powder in 20g of water, dissolving 4.5g of hydroxypropyl methyl cellulose in 35g of water, then respectively adding each solution into 300g of raw soil, uniformly stirring after adding each solution into the raw soil, and totally adding 90g of water in the uniformly stirring process to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
Example 4
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the particle size of less than or equal to 0.5mm, 21g of glutinous rice glue, 0.6g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3g of instant rubber powder, 4.5g of hydroxypropyl methyl cellulose and 210g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 21g of glutinous rice glue, 0.6g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3g of instant glue powder, 4.5g of hydroxypropyl methyl cellulose and 210g of water;
(4) dissolving 21g of glutinous rice glue in 60g of water, dissolving 0.6g of acrylic emulsion in 5g of water, dissolving 3g of instant glue powder in 20g of water, dissolving 4.5g of hydroxypropyl methyl cellulose in 35g of water, then respectively adding each solution into 300g of raw soil, uniformly stirring after each solution is added into the raw soil, and stirring and uniformly mixing the solution, wherein the total amount of 90g of water in the process of uniformly stirring and mixing to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
Example 5
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the particle size of less than or equal to 0.5mm, 21g of glutinous rice glue, 1.2g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3.6g of instant glue powder, 3g of hydroxypropyl methyl cellulose and 200g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 21g of glutinous rice glue, 1.2g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3.6g of instant glue powder, 3g of hydroxypropyl methyl cellulose and 210g of water;
(4) dissolving 21g of glutinous rice glue in 60g of water, dissolving 1.2g of acrylic emulsion in 5g of water, dissolving 3.6g of instant gelatine powder in 20g of water, dissolving 3g of hydroxypropyl methyl cellulose in 25g of water, then respectively adding each solution into 300g of raw soil, uniformly stirring after each solution is added into the raw soil, and stirring and uniformly mixing the solutions, wherein the total amount of 90g of water in the process of uniformly stirring and mixing to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
Example 6
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the particle size of less than or equal to 0.5mm, 21g of glutinous rice glue, 1.8g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 2.4g of instant gelatine powder, 3.75g of hydroxypropyl methyl cellulose and 205g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 21g of glutinous rice glue, 1.8g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 2.4g of instant glue powder, 3.75g of hydroxypropyl methyl cellulose and 205g of water;
(4) dissolving 21g of glutinous rice glue in 60g of water, dissolving 1.8g of acrylic emulsion in 10g of water, dissolving 2.4g of instant rubber powder in 15g of water, dissolving 3.75g of hydroxypropyl methyl cellulose in 30g of water, then respectively adding each solution into 300g of raw soil, uniformly stirring after each solution is added into the raw soil, and stirring and uniformly mixing the solution, wherein the total amount of 90g of water in the process of uniformly stirring and uniformly mixing the solution to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
Example 7
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the grain diameter less than or equal to 0.5mm, 30g of glutinous rice glue, 0.6g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3.6g of instant gelatine powder, 3.75g of hydroxypropyl methyl cellulose and 225g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 30g of glutinous rice glue, 0.6g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3.6g of instant gelatine powder, 3.75g of hydroxypropyl methyl cellulose and 225g of water;
(4) dissolving 30g of glutinous rice glue in 80g of water, dissolving 0.6g of acrylic emulsion in 5g of water, dissolving 3.6g of instant rubber powder in 20g of water, dissolving 3.75g of hydroxypropyl methyl cellulose in 30g of water, then respectively adding each solution into 300g of raw soil, uniformly stirring after each solution is added into the raw soil, and stirring and uniformly mixing the solution, wherein the total amount of 90g of water in the process of uniformly stirring and uniformly mixing the solution to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
Example 8
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the grain diameter less than or equal to 0.5mm, 30g of glutinous rice glue, 1.2g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 2.4g of instant gelatine powder, 4.5g of hydroxypropyl methyl cellulose and 225g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 30g of glutinous rice glue, 1.2g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 2.4g of instant gelatine powder, 4.5g of hydroxypropyl methyl cellulose and 225g of water;
(4) dissolving 30g of glutinous rice glue in 80g of water, dissolving 1.2g of acrylic emulsion in 5g of water, dissolving 2.4g of instant rubber powder in 15g of water, dissolving 4.5g of hydroxypropyl methyl cellulose in 35g of water, then respectively adding each solution into 300g of raw soil, uniformly stirring after each solution is added into the raw soil, and stirring and uniformly mixing the solution, wherein the total amount of 90g of water in the process of uniformly stirring and uniformly mixing the solution to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
Example 9
The raw soil wall modified masonry slurry comprises the following components: 300g of raw soil with the grain diameter less than or equal to 0.5mm, 30g of glutinous rice glue, 1.8g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3g of instant gelatine powder, 3g of hydroxypropyl methyl cellulose and 225g of water.
The modified raw soil test piece is prepared by the following method:
(1) weighing 800g of raw soil with the particle size of less than or equal to 0.5mm, adding 240g of water, and uniformly stirring to obtain raw soil material;
(2) putting the raw soil material obtained in the step (1) into a cutting ring for extrusion molding, demolding after 2d, cutting a test block into upper and lower cake blocks with the height of 1cm, and maintaining until the test block is dry for later use;
(3) weighing 300g of raw soil with the particle size of less than or equal to 0.5mm, 30g of sticky rice glue, 1.8g of acrylic emulsion with the solid content of 49 percent and the pH value of 8.5, 3g of instant gelatine powder, 3g of hydroxypropyl methyl cellulose and 225g of water;
(4) dissolving 30g of glutinous rice glue in 80g of water, dissolving 1.8g of acrylic emulsion in 10g of water, dissolving 3g of instant glue powder in 20g of water, dissolving 3g of hydroxypropyl methyl cellulose in 25g of water, then respectively adding each solution into 300g of raw soil, uniformly stirring after each solution is added into the raw soil, and stirring and uniformly mixing the solutions until 90g of water is totally obtained in the process of uniformly stirring to prepare the modified masonry slurry.
(5) And (3) bonding the upper cake and the lower cake prepared in the step (2) together by using the modified masonry slurry prepared in the step (4), and curing indoors for 7 days until the cakes are dried to obtain the modified raw soil test piece.
The shapes of the ordinary raw soil test pieces prepared in the control group and the modified raw soil test pieces prepared in examples 1 to 9 are shown in fig. 1, the 10 raw soil test pieces are subjected to performance tests, the test tests are direct shear tests in geotechnical test regulations, specifically refer to geotechnical test regulations SL237-1999, the direct shear tests are carried out after curing according to a standard curing method, the shapes of the 10 raw soil test pieces after shear failure are shown in fig. 2, and the test results are shown in table 2 and fig. 3.
The modified masonry slurry in the embodiment 1 to the embodiment 9 is used for preparing test pieces, the test pieces prepared from the common masonry slurry are used for comparison, and the mechanical properties of the test pieces in the compression resistance and the fracture resistance are respectively tested.
The method for preparing the test piece by using the modified masonry slurry in the embodiment 1 to the embodiment 9 is as follows:
(1) the size of the test mold is 120 mm, 40 mm and 160 mm, the test mold consists of three 40 mm, 40 mm and 160 mm, and 3 molding test pieces can be manufactured by one mold each time;
(2) before the test, the mould is wiped clean by a dry towel, and the inner layer of the mould is uniformly coated with machine oil by a brush;
(3) respectively filling the modified masonry slurry prepared in the embodiments 1 to 9 into a mould, vibrating for 5 to 10 times by using a steel tamper until the surface of the mould overflows, and trowelling the surface of a test piece by using a trowel after the vibration is finished;
(4) maintaining the test piece for 24 hours under natural conditions, and then removing the mold and numbering;
(5) and (5) continuously maintaining the demoulded test piece for 28 days under natural conditions.
The preparation method of the common compression-resistant and fracture-resistant test piece is the same as the above.
The 10 test pieces prepared from the slurry are subjected to performance tests, wherein the test tests are a compressive strength test and a flexural strength test in cement mortar strength test procedures, specifically refer to GB/T17671-1999 cement mortar strength test method (ISO method), the compressive and flexural tests are performed after curing according to a standard curing method, the shapes of the 10 test pieces prepared from the slurry after being pressed and folded are respectively shown in fig. 4 and 5, and the test results are shown in table 2, 6 and 7.
TABLE 2 test results of shear, compression and bending resistance of each test piece
As can be seen from Table 2 and FIG. 3, the shear strength of the modified raw soil test pieces prepared from the modified masonry slurry of examples 1 to 9 is obviously improved compared with that of the common raw soil test pieces, which indicates that the shear strength of the modified masonry slurry of the invention can be improved by 53.8% to the maximum.
As can be seen from Table 2, FIG. 6 and FIG. 7, the mechanical properties of the test piece prepared from the modified masonry slurry of the invention in compression resistance and fracture resistance are respectively improved by 31.4% and 23.5% compared with the test piece prepared from the common masonry slurry, and the ductility and deformability of the test piece are improved. By comprehensively analyzing the results of the shear, compression and fracture resistance tests, the optimal mixing proportion of the modified slurry suitable for building the raw soil wall can be obtained, wherein the optimal mixing proportion comprises 7 percent of glutinous rice glue, 0.2 percent of acrylic emulsion, 1.0 percent of instant glue powder and 1.25 percent of hydroxypropyl methyl cellulose in percentage by weight of the raw soil.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (6)
1. The raw soil wall modified masonry slurry is characterized by comprising the following components in parts by mass: 300 parts of raw soil, 12-30 parts of glutinous rice glue, 0.6-1.8 parts of acrylic emulsion, 2.4-3.6 parts of instant rubber powder, 3-4.5 parts of hydroxypropyl methyl cellulose and 225 parts of water 155-.
2. The raw soil wall modified masonry mud according to claim 1, wherein the particle size of the raw soil is less than or equal to 0.5 mm.
3. The raw soil wall modified masonry mud of claim 1, wherein the acrylic emulsion has a solids content of 49-51% and a pH of 8-9.
4. The method for preparing the raw soil wall modified masonry mud according to any one of claims 1 to 3, characterized by comprising the following steps:
(1) weighing 300 parts of raw soil, 12-30 parts of glutinous rice glue, 0.6-1.8 parts of acrylic emulsion, 2.4-3.6 parts of instant rubber powder, 3-4.5 parts of hydroxypropyl methyl cellulose and 225 parts of water 155-containing material according to the mass ratio;
(2) respectively dissolving the glutinous rice glue, the acrylic emulsion, the instant glue powder and the hydroxypropyl methyl cellulose in water, then respectively adding the solutions into raw soil, and adding water in the mixing process until slurry meeting the required viscosity is obtained.
5. The method as claimed in claim 4, wherein in the step (2), 12-30 parts of glutinous rice glue is dissolved in 40-80 parts of water, 0.6-1.8 parts of acrylic acid emulsion is dissolved in 5-10 parts of water, 2.4-3.6 parts of instant gelatine powder is dissolved in 15-20 parts of water, 3-4.5 parts of hydroxypropyl methyl cellulose is dissolved in 25-35 parts of water, then each solution is respectively added into 300 parts of raw soil, and 70-90 parts of water is added in total during the stirring and uniform mixing process.
6. The method of claim 4 or 5, wherein in step (2), the raw soil is stirred and mixed after each addition of one solution.
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