Concrete wall material simulating rammed earth wall and construction method thereof

Abstract

The invention discloses a rammed earth wall imitating concrete wall material and a construction method thereof, and belongs to the technical field of building walls. The rammed earth wall imitating concrete wall material is prepared from the following raw materials: white high-alumina cement, white ordinary Portland cement, white semi-hydrated gypsum, 10-20-mesh golden yellow sand, 10-20-mesh medium yellow sand, 10-20-mesh white sand, 20-40-mesh white sand, 40-80-mesh white sand, 3-5mm natural stones, 3-5mm red stones, iron oxide yellow, iron oxide red, iron oxide black, 200-mesh heavy calcium carbonate, rutile titanium dioxide, a waterproof agent and an alkali efflorescence inhibiting agent. The invention further provides a construction method of the simulated rammed earth wall. The rammed-earth-wall-imitating concrete wall material is similar to a natural ancient rammed-earth wall in texture, and the construction method of the rammed-earth-wall-imitating concrete wall material has the advantage of being easy to construct.

Description

Technical Field

[0001] The invention relates to the technical field of building walls, and in particular to a rammed earth imitation concrete wall material and a construction method thereof. Background Art

[0002] At present, the application of modern rammed earth technology in China is mainly concentrated in the main body of building and enclosure structure. It mostly adopts a very heavy rammed solid wall method (the wall thickness is mostly 40 cm and above), with complex construction links, high labor intensity, high cost (need to use a lot of raw soil), and rough and heavy surface texture, which is not suitable for application and promotion as a more delicate architectural decoration process and material. Traditional raw earth materials have low strength, poor water resistance, easy cracking, and easy to be eroded by wind and rain, resulting in aging, resulting in congenital deficiencies in raw earth buildings in terms of earthquake resistance, water resistance and crack resistance.

[0003] CN103864348B discloses a kind of diatomite wall material for antique rammed earth wall, which is mainly made of calcined diatomite, carefully prepared by natural colored sand and calcined diatomite, and then added with quartz sand powder, nano titanium dioxide methylcellulose and redispersible latex powder to prepare a new type of environmentally friendly wall decoration material. However, the defects of diatomite are poor water resistance, poor scrubbing resistance, insufficient hardness and unsuitable for use in humid environments. Even when used in the dry area environment of the inner wall of villas, restaurants, private clubs, families, etc., it is inevitable that there will be wet situations, which will also cause defects on the wall surface decorated by diatomite. Diatomite also has a powdering phenomenon and a short service life. In addition, diatomite has a very significant disadvantage, that is, the construction process is cumbersome, and it must be operated by a professional construction team to obtain the required decorative effect.

[0004] How to make the rammed earth wall have high strength, corrosion resistance and beautiful effect is a problem that needs to be solved by R&D personnel. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an imitation rammed earth wall concrete wall material and a construction method thereof, which can make the imitation rammed earth wall have high strength, corrosion resistance and aesthetic effect, while ensuring the integrity of the wall structure.

[0006] The technical solution provided by the present invention is as follows:

[0007] In a first aspect, the present invention provides a rammed earth imitation concrete wall material, which is made of the following raw materials in parts by weight:

[0008] White high alumina cement: 10-12 parts by weight;

[0009] White ordinary Portland cement: 2-3 parts by weight;

[0010] White hemihydrate gypsum: 3-4 parts by weight;

[0011] 10~20 mesh golden sand: 6~8 parts by weight;

[0012] 10-20 mesh yellow sand: 3-5 parts by weight;

[0013] 10-20 mesh white sand: 4-6 parts by weight;

[0014] 20-40 mesh white sand: 8-10 parts by weight;

[0015] 40-80 mesh white sand: 8-10 parts by weight;

[0016] 3~5mm natural stone: 34~37 parts by weight;

[0017] 3~5mm red stone: 16~19 parts by weight;

[0018] Yellow iron oxide: 0.13-0.15 parts by weight;

[0019] Red iron oxide: 0.02-0.03 parts by weight;

[0020] Black iron oxide: 0.04-0.05 parts by weight;

[0021] 200 mesh heavy calcium: 2.5-3 parts by weight;

[0022] Rutile titanium dioxide: 1.5-2 parts by weight;

[0023] Waterproofing agent: 0.5~1.5 parts by weight;

[0024] Efflorescence inhibitor: 0.5-1.5 parts by weight.

[0025] In a second aspect, the present invention provides a construction method of a concrete wall material imitating a rammed earth wall. After a specific construction process is performed on the specific concrete wall material imitating a rammed earth wall of the present invention, a specific imitation rammed earth wall is formed. The wall structure is natural and beautiful, and the texture is close to that of a natural ancient rammed earth wall, which meets people's requirements for wall decoration. In addition, the construction method of the concrete wall material imitating a rammed earth wall provided by the present invention has the characteristic of simple construction. The construction method of the concrete wall material imitating a rammed earth wall comprises the following steps:

[0026] S1. Treat the original wall surface and remove the dust on the wall;

[0027] S2. preparing rammed earth slurry: mixing the imitation rammed earth wall concrete material and water in a weight ratio of 10:0.8-1.4 to obtain rammed earth slurry;

[0028] S3, preparing roughened slurry to form an adhesive layer: roughening the original wall surface to form an adhesive layer;

[0029] S4. Install several hangers on the adhesive layer on the original wall surface: the hangers include a hanger body, an expansion bolt, a sleeve and a connecting bolt that penetrate from top to bottom; one side of the hanger body is a mounting portion, the mounting portion is fixed to the adhesive layer, and at least one expansion bolt mounting hole is provided on the mounting portion; the side opposite to the mounting portion is a connecting portion, and a connecting bolt mounting hole is provided on the connecting portion, an external thread is provided on the outer side of the connecting bolt, and one end of the connecting bolt passes through the connecting bolt mounting hole;

[0030] Drill a hole in the original wall, install the sleeve in the hole, insert one end of the expansion bolt into the sleeve, fix one side of the hanger body with the other end of the expansion bolt, use the expansion bolt nut to fix the expansion bolt and the hanger body, and fix one end of the connecting bolt to the other side of the hanger body opposite to the expansion bolt;

[0031] A fixing nut is fixedly arranged on the outside of the connecting bolt installation hole of the connecting part, and one end of the connecting bolt is threadedly connected with the fixing nut and then passes through the connecting bolt installation hole; or, the connecting bolt installation hole is a smooth round hole, and the diameter of the connecting bolt installation hole is larger than the diameter of the connecting bolt. After one end of the connecting bolt passes through the connecting bolt installation hole, a fixing nut is arranged in the inner cavity of the hanger body to movably connect the connecting bolt to the hanger body;

[0032] S5. Build the bottom formwork: Determine the thickness of the rammed earth wall according to the design requirements, pass the connecting bolts through the reserved holes of the transparent plate and the stiffening keel in turn, screw the external nuts on the outer side of the stiffening keel to connect with the connecting bolts to define the position of the transparent plate; set up side plates on both sides of the original wall to form a casting cavity between the transparent plate, the side plates and the roughened layer;

[0033] When the bonding layer is uneven due to the uneven original wall, the distance between the highest point of the bonding layer and the inner side of the transparent plate is the thickness of the rammed earth wall.

[0034] S6. Add the rammed earth slurry into the casting cavity in multiple times; the thickness of the rammed earth slurry added at one time is 27-30 cm; after adding once, use a tamping tool to stir the rammed earth slurry to make it uneven, and then use the tamping tool to tamping lightly and then heavily, and the thickness of the rammed earth slurry is reduced by 25% after the tamping;

[0035] S7, repeat the process of S5-S6, and cycle from bottom to top to build the template, add the rammed earth slurry and ram the earth; when joining the joints, loosen the soil at the joints first, or leave a little loose soil at the joints, and ram together when filling the rammed earth slurry next time;

[0036] S8. After the rammed earth slurry solidifies and takes shape, the transparent plate is removed, the connecting bolts are removed, and the holes formed by the removal of the studs are filled with rammed earth slurry. The rammed earth wall is completed, and a structure of alternating dense areas and loose areas is formed in the height direction.

[0037] According to the aforementioned construction method of imitation rammed earth wall concrete wall material, in S3, the mixing ratio of the roughened slurry is cement: 108 glue: water = 2:1:1.

[0038] According to the aforementioned construction method of imitation rammed earth wall concrete wall material, in S4, the hangers are distributed in a five-point plum blossom shape on the original wall surface.

[0039] According to the aforementioned construction method of imitation rammed earth wall concrete wall material, in S4, a metal mesh fixing part is fixedly provided on the outer surface of the connecting part of the hanger body;

[0040] The method before S5 also includes: installing the metal mesh on the metal mesh fixing portion of the pendant.

[0041] According to the aforementioned construction method of imitation rammed earth wall concrete wall material, in S4, a penetrating tool connection hole is provided at one end of the connecting bolt away from the hanger body.

[0042] According to the aforementioned construction method of imitation rammed earth wall concrete wall material, scale lines are set on the transparent plate to guide and control the amount of rammed earth slurry added to the casting cavity; and tamping lines are also set on the transparent plate to guide and control the height position of the dense area where tamping ends.

[0043] According to the aforementioned construction method of imitation rammed earth wall concrete material, in S2, the total amount of 3-5 mm natural stone and 3-5 mm red stone is 50-56 parts by weight.

[0044] According to the aforementioned construction method of imitation rammed earth wall concrete wall material, the range of the density difference Δρ between the wall density in the dense area and the density of the rammed earth slurry is: 620 kg / m 3 ~700 kg / m 3 .

[0045] The present invention has the following beneficial effects:

[0046] (1) Since colored sand and colored stone components are introduced into the material formula, and the particle size of the colored sand and the amount of each component in the formula are optimized, the imitation rammed earth wall concrete material provided by the present invention has the aesthetic performance of traditional rammed earth wall materials, and also has the remarkable characteristics of better corrosion resistance, higher strength, and greater durability.

[0047] (2) After a specific construction process is carried out using the specific imitation rammed earth wall concrete material of the present invention, the wall has clear layers, natural colors, and a texture close to that of natural ancient rammed earth walls, which meets people's requirements for wall decoration; and the construction method of the imitation rammed earth wall concrete material provided by the present invention has the characteristic of simple construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a side view of the imitation rammed earth wall of the present invention;

[0049] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0050] Figure 3 is a schematic diagram of the distribution of the hangers on the adhesive layer in S4;

[0051] Figure 4 It is a front view of the metal mesh connected to the pendant;

[0052] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0053] Figure 6 It is a side view of the metal mesh connected to the pendant;

[0054] Figure 7 It is a three-dimensional diagram of the combination state of the transparent plate, side plate, original wall, adhesive layer and metal mesh in S5;

[0055] Figure 8 It is the front view of the assembly state of the transparent plate, side plate and stiffening keel in S5;

[0056] Fig. 9 for Figure 8 Sectional view along CC direction;

[0057] Fig.10 for Fig. 9 A partial enlarged view of point D in the middle;

[0058] Fig.11 A three-dimensional diagram of components of a pendant;

[0059] Fig.12 A three-dimensional diagram of a connection state of a pendant;

[0060] Fig.13 A top view of a pendant;

[0061] Fig.14 A three-dimensional diagram of another type of pendant;

[0062] Fig.15 is a top view of another type of pendant;

[0063] Fig.16 A three-dimensional diagram of a pendant body of a pendant;

[0064] Fig.17 A front view of a pendant body of a pendant;

[0065] Fig.18 is a three-dimensional diagram of another pendant body;

[0066] Fig.19is a front view of the transparent plate;

[0067] Fig. 20 This is a physical picture of the imitation rammed earth wall of Example 8;

[0068] Fig.21 This is a physical picture of the imitation rammed earth wall of Comparative Example 1;

[0069] Fig. 22 This is a physical picture of the imitation rammed earth wall of comparative example 2.

[0070] In the figure, 1. original wall; 2. adhesive layer; 3. hanger; 31. hanger body; 32. installation part; 321. expansion bolt installation hole; 33. connection part; 331. connection bolt installation hole; 34. sleeve; 35. expansion bolt; 36. expansion bolt nut; 37. connection bolt; 371. tool connection hole; 38. external nut; 39. metal mesh fixing part; 310. fixing nut; 4. metal mesh; 5. transparent plate; 6. side plate; 7. casting cavity; 8. rammed earth wall; 9. stiffening keel. DETAILED DESCRIPTION

[0071] The following is combined with Figures 1 to 22 The specific implementation of the present invention is described in detail. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the protection scope of the present invention.

[0072] Unless otherwise specified, the methods used in the following examples are all conventional methods.

[0073] Unless otherwise specified, the materials and reagents used in the following examples can be obtained from commercial sources.

[0074] The present invention provides a rammed earth wall imitation concrete wall material having a texture close to that of an ancient rammed earth wall. The concrete wall material is a material prepared by mixing a plurality of components. For specific components, see Examples 1 to 4.

[0075] Embodiment 1:

[0076] The imitation rammed earth wall concrete material is made of the following raw materials in parts by weight:

[0077] White high alumina cement: 10 parts by weight; white ordinary Portland cement: 2 parts by weight; white hemihydrate gypsum: 3 parts by weight; 10-20 mesh golden yellow sand: 6 parts by weight; 10-20 mesh medium yellow sand: 3 parts by weight; 10-20 mesh white sand: 4 parts by weight; 20-40 mesh white sand: 8 parts by weight; 40-80 mesh white sand: 8 parts by weight; 3-5 mm natural stone: 34 parts by weight; 3-5 mm red stone: 16 parts by weight; yellow iron oxide: 0.14 parts by weight; red iron oxide: 0.025 parts by weight; black iron oxide: 0.045 parts by weight; 200 mesh heavy calcium: 2.5 parts by weight; rutile titanium dioxide: 1.5 parts by weight; waterproofing agent: 1 part by weight; alkali-inhibiting agent: 1 part by weight.

[0078] White high-alumina cement, white ordinary Portland cement and white semi-hydrated gypsum form a ternary cementitious system as the main component of the concrete wall material for imitation rammed earth walls. Among them, high-alumina cement has extremely low soluble impurity content, special microstructure and hydration products, so that the soluble salts that cause discoloration will not be precipitated on the surface of the mortar. The hydrated calcium aluminate system generated by the hydration of pure high-alumina cement has coarse crystals and large pores, which makes the mortar water resistant poor. The initial strength of ordinary Portland cement is low, and once the cement is hydrated, the water resistance will become higher and higher, showing the first soft and then hard. Therefore, the composite use of aluminates and silicates can minimize or avoid the generation of metastable hydration products, thereby solving the problems of strength shrinkage and poor water resistance of pure high-alumina cement. Semi-hydrated gypsum can fill the micropores of the cementitious system, improve the density of the mortar, and promote the formation of calcium sulfonate and aluminum glue in the hydration reaction of the cementitious material, consume Ca(OH)2 generated by the hydration of Portland cement, and reduce the efflorescence component.

[0079] 10~20 mesh golden sand, 10~20 mesh medium yellow sand, 10~20 mesh white sand, 20~40 mesh white sand, 40~80 mesh white sand, 3~5mm natural stone, 3~5mm red stone, yellow iron oxide, red iron oxide and black iron oxide are the ingredients for the wall color, and the imitation rammed earth wall can form a natural khaki color.

[0080] 3~5mm natural stone and 3~5mm red stone are used as coarse aggregate, and the rest of the formula is fine aggregate. The coarse aggregate and the fine aggregate are combined to form an imitation rammed earth wall to form a porous structure of the wall.

[0081] Rutile titanium dioxide, water-repellent and alkali-inhibiting agent are functional additives, among which rutile titanium dioxide has a certain ability to reflect infrared rays and has strong anti-ultraviolet performance, and can reflect ultraviolet light to a large extent.

[0082] Embodiment 2:

[0083] The imitation rammed earth wall concrete material is made of the following raw materials in parts by weight:

[0084] White high alumina cement: 12 parts by weight; white ordinary Portland cement: 3 parts by weight; white hemihydrate gypsum: 4 parts by weight; 10-20 mesh golden yellow sand: 8 parts by weight; 10-20 mesh medium yellow sand: 5 parts by weight; 10-20 mesh white sand: 6 parts by weight; 20-40 mesh white sand: 10 parts by weight; 40-80 mesh white sand: 10 parts by weight; 3-5 mm natural stone: 37 parts by weight; 3-5 mm red stone: 19 parts by weight; yellow iron oxide: 0.15 parts by weight; red iron oxide: 0.03 parts by weight; black iron oxide: 0.05 parts by weight; 200 mesh heavy calcium: 3 parts by weight; rutile titanium dioxide: 2 parts by weight; waterproofing agent: 1.5 parts by weight; alkali-inhibiting agent: 1.5 parts by weight.

[0085] Embodiment 3:

[0086] The imitation rammed earth wall concrete material is made of the following raw materials in parts by weight:

[0087] White high alumina cement: 11 parts by weight; white ordinary Portland cement: 2 parts by weight; white hemihydrate gypsum: 3.5 parts by weight; 10-20 mesh golden yellow sand: 7 parts by weight; 10-20 mesh medium yellow sand: 3 parts by weight; 10-20 mesh white sand: 6 parts by weight; 20-40 mesh white sand: 8 parts by weight; 40-80 mesh white sand: 9 parts by weight; 3-5 mm natural stone: 36 parts by weight; 3-5 mm red stone: 18 parts by weight; yellow iron oxide: 0.14 parts by weight; red iron oxide: 0.02 parts by weight; black iron oxide: 0.04 parts by weight; 200 mesh heavy calcium: 2.5 parts by weight; rutile titanium dioxide: 1.7 parts by weight; waterproofing agent: 1.2 parts by weight; alkali-inhibiting agent: 1.2 parts by weight.

[0088] Embodiment 4:

[0089] The imitation rammed earth wall concrete material is made of the following raw materials in parts by weight:

[0090] White high alumina cement: 12 parts by weight; white ordinary Portland cement: 2.5 parts by weight; white hemihydrate gypsum: 4 parts by weight; 10-20 mesh golden yellow sand: 7.2 parts by weight; 10-20 mesh medium yellow sand: 4 parts by weight; 10-20 mesh white sand: 4 parts by weight; 20-40 mesh white sand: 9.5 parts by weight; 40-80 mesh white sand: 9.5 parts by weight; 3-5 mm natural stone: 36 parts by weight; 3-5 mm red stone: 18 parts by weight; yellow iron oxide: 0.13 parts by weight; red iron oxide: 0.03 parts by weight; black iron oxide: 0.05 parts by weight; 200 mesh heavy calcium: 2.8 parts by weight; rutile titanium dioxide: 1.8 parts by weight; waterproofing agent: 0.8 parts by weight; alkali-inhibiting agent: 0.8 parts by weight.

[0091] The beneficial effects of Examples 1 to 4 are that: since colored sand (including golden sand, medium yellow sand and white sand) and colored stone (including natural stone and red stone) components are introduced into the material formula, and the particle size of the colored sand and colored stone and the amount of each component in the formula are optimized, the imitation rammed earth wall concrete wall material provided by the present invention has the performance of traditional rammed earth wall materials, the wall is beautiful and natural, and also has the remarkable characteristics of better corrosion resistance, higher strength, and greater durability.

[0092] Embodiment 5:

[0093] The construction method of the imitation rammed earth wall concrete wall material comprises the following steps:

[0094] S1. Process the original wall 1 and remove the dust on the wall.

[0095] S2. Prepare rammed earth slurry: Evenly mix the imitation rammed earth wall concrete material and water in a weight ratio of 10:0.8-1.4 to obtain rammed earth slurry.

[0096] S3, prepare roughening slurry to form a bonding layer: the ratio of roughening slurry is cement: 108 glue: water = 2:1:1, and roughening is performed on the surface of the original wall 1 to form a bonding layer 2. The purpose of roughening is to make the surface of the structural wall form a rough and uneven granular feeling, which is conducive to the combination of the rammed earth wall 8 and the original wall 1. Roughening can be done by two methods: spraying or roller coating.

[0097] S4. Install several hangers 3 on the adhesive layer 2 on the surface of the original wall 1: the hanger 3 includes a hanger body 31, an expansion bolt 35, a sleeve 34 and a connecting bolt 37 that pass through from top to bottom; one side of the hanger body 31 is a mounting portion 32, the mounting portion 32 is fitted and fixed to the adhesive layer 2, and at least one expansion bolt mounting hole 321 is provided on the mounting portion 32; the side opposite to the mounting portion 32 is a connecting portion 33, the connecting portion 33 is provided with a connecting bolt mounting hole 331, the outer side of the connecting bolt 37 is provided with an external thread, and one end of the connecting bolt 37 passes through the connecting bolt mounting hole 331.

[0098] Drill a hole on the original wall 1, install the sleeve 34 in the hole, insert one end of the expansion bolt 35 into the sleeve 34, fix one side of the hanger body 31 with the other end of the expansion bolt 35, use the expansion bolt nut 36 to fix the expansion bolt 35 and fix one end of the connecting bolt 37 to the other side of the hanger body 31 opposite to the expansion bolt 35.

[0099] The hanger body 31 is in the shape of a trapezoid, with the interior being penetrated from top to bottom, and the inclined surface of the trapezoid is a rectangular opening. In addition, the hanger body 31 can also be in the shape of a cuboid with the interior being penetrated from top to bottom. The interior of the hanger body 31 is a cavity structure that is penetrated from top to bottom, and the rammed earth slurry can be inside the hanger body 31, ensuring the connection stability between the hanger 3 and the original wall 1.

[0100] A fixing nut 310 is fixedly arranged outside the connection bolt installation hole 331 of the connection part 33, and specifically, the fixing nut 310 is welded and fixed to the outside of the connection part 33. After one end of the connection bolt 37 is threadedly connected with the fixing nut 310, it passes through the connection bolt installation hole 331, which can stably support the transparent plate 5 at the other end of the connection bolt 37; or, the connection bolt installation hole 331 is a smooth round hole, and the diameter of the connection bolt installation hole 331 is larger than the diameter of the connection bolt 37. After one end of the connection bolt 37 passes through the connection bolt installation hole 331, a fixing nut 310 is arranged in the inner cavity of the hanger body 31 to flexibly connect the connection bolt 37 to the hanger body 31, and the connection bolt 37 can have a movable space on the hanger body 31. Since the connection bolt 37 can move relatively in the connection bolt installation hole 331, the position of the connection bolt 37 can be adjusted when it is installed with the transparent plate 5, so that it is convenient to pass through the reserved hole on the transparent plate 5.

[0101] Preferably, the hangers 3 are distributed in a five-point plum blossom shape on the original wall 1, such as Figure 3 As shown, the connecting bolts 37 installed on the hanger 3 and the transparent plate 5 are evenly stressed, and the connecting structure is stable.

[0102] S5. Build the bottom template: determine the thickness of the rammed earth wall 8 according to the design requirements, pass the connecting bolts 37 through the reserved holes of the transparent plate 5 and the stiffening keel 9 in sequence, screw the external nuts 38 on the outer side of the stiffening keel 9 to connect with the connecting bolts 37 to limit the position of the transparent plate 5; set up side panels 6 on both sides of the original wall 1, and form a casting cavity 7 between the transparent plate 5, the side panels 6 and the roughened layer.

[0103] The height of the transparent plate 5 is 60-70 cm, which is convenient for using a tamping tool to tamp the soil in the casting cavity 7, and can also meet the requirement of adding tamping slurry multiple times, thereby improving construction efficiency.

[0104] Before the external nut 38 is tightened, the transparent plate 5 can be adjusted on the connecting bolt 37 to meet the requirements of rammed earth walls 8 of different thicknesses. When the position of the transparent plate 5 is determined, the external nut 38 is fixed.

[0105] When the adhesive layer 2 is uneven due to the uneven original wall 1 , the distance between the highest point of the protrusion of the adhesive layer 2 and the inner side of the transparent plate is taken as the thickness of the rammed earth wall 8 .

[0106] The use of the transparent plate 5 allows the position of the rammed earth slurry to be observed when the rammed earth slurry is added and during the point tamping process, so as to control the stripe contour lines and the molding effect of the rammed earth wall 8. The transparent plate 5 can be a glass plate. In order to reduce the weight of the transparent plate 5 and facilitate construction, the transparent plate 5 can be an acrylic plate or a polycarbonate plate.

[0107] The reinforcing keel 9 can prevent the surface of the rammed earth wall 8 from being uneven due to the addition of rammed earth slurry into the casting cavity and the deformation of the transparent plate 5 during the ramming process.

[0108] S6, adding rammed earth slurry into the casting cavity 7 in multiple times; the thickness of the rammed earth slurry added at one time is 27-30 cm; and then using a ramming tool to ram lightly and then heavily, using the same ramming earth slurry to form a rammed earth wall 8 with alternating density, thereby increasing the beauty of the rammed earth wall 8 and making it more natural in terms of layers. The ramming tool is a conventional setting, which may be an air shovel and a ramming head arranged at the output end of the air shovel.

[0109] The transparent plate 5 is knocked from the outside by a pneumatic shovel to make the outer surface of the rammed earth wall 8 flat.

[0110] S7. Repeat the process of S6 to S7, and build the formwork, add rammed earth slurry and ram the earth from bottom to top. When joining the joints, loosen the soil first, or leave a little loose soil at the joints, and ram together when filling in the rammed earth slurry next time.

[0111] S8. After the rammed earth slurry is solidified, the transparent plate 5 is removed, the connecting bolts 37 are removed, and the holes formed by the removal of the studs are filled with rammed earth slurry. The rammed earth wall 8 is completed.

[0112] Preferably, in S4, a metal mesh fixing portion 39 is fixedly provided on the outer surface of the connecting portion 33 of the hanger body 31; before S5, the method further includes: installing the metal mesh 4 on the metal mesh fixing portion 39 of the hanger 3, such as Figures 4 to 6 As shown, the metal mesh 4 is used to enhance the strength of the rammed earth wall 8 and prevent the wall from cracking. The hanger 3 is not only used to fix the outer end of the connecting bolt 37 to the transparent plate 5, but also used to fix the metal mesh.

[0113] The metal mesh fixing portion 39 may be a threaded column, such as Fig.16 and Fig.17 As shown, the transverse ribs or longitudinal ribs of the metal mesh 4 are clamped on the threaded column 333, as shown in FIG. Figure 5 The metal mesh fixing portion 39 may be an L-shaped hook welded to the outer surface of the connecting portion 33, such as Fig.18 As shown, the transverse ribs of the metal mesh 4 are embedded between the L-shaped hook 332 and the connecting portion 33; the metal mesh fixing portion 39 can also be a through-hole, and the metal mesh 4 is fixed to the hanger body 31 by setting a wire.

[0114] Preferably, in S4, a tool connection hole 371 is provided at one end of the connection bolt 37 away from the hanger body 31. Fig.11 As shown, it is convenient to insert a tool into the tool connecting hole 371 to remove the connecting bolt 37 from the rammed earth wall 8 .

[0115] Preferably, if Fig.19 As shown, the transparent plate 5 is provided with scale lines for guiding and controlling the amount of rammed earth slurry added to the casting cavity 7. The amount of rammed earth slurry added is determined according to the design, and the scale lines are used as calibration. The feeding reference line is the height position of the rammed earth slurry after the determined scale line height; the transparent plate 5 is also provided with tamping lines for guiding and controlling the height position of the dense area where the tamping is terminated. The scale lines and tamping lines are provided on the transparent plate 5 to guide the construction workers in the feeding and tamping process, so that the construction process is standardized.

[0116] Preferably, in S2, the total amount of 3-5 mm natural stones and 3-5 mm red stones is 50-56 parts by weight. If the total amount of stones is less than 50 parts by weight, there are too few stones as coarse materials and too many fine materials, which will result in unclear loose areas of the obtained imitation rammed earth wall; if the total amount of stones is greater than 56 parts by weight, there are too many stones as coarse materials and too few fine materials, and the dense areas are unclear.

[0117] Preferably, in S2, the density ρ1 of the rammed earth slurry is in the range of: 1710 kg / m 3 ~1760 kg / m 3 In S8, the density ρ2 of the dense area of ​​the prepared rammed earth wall is in the range of: 2380 kg / m 3 ~2410 kg / m 3 The density difference Δρ between the wall density in the dense area and the density of the rammed earth slurry (hereinafter referred to as: density difference Δρ) is in the range of: 620 kg / m 3 ~700 kg / m 3 . If the density difference Δρ is too small, the dense area will not be obvious, and the whole wall will be a loose wall; if the density difference Δρ is too large, the height of the dense area will be too large, and the wall in the loose area will not be obvious. The loose area is transmitted by the tamping pressure, and the density of the loose area is formed naturally. Only the density difference Δρ that meets the embodiment of the present invention can have a natural and beautiful wall effect; if the density difference Δρ is used outside the present embodiment, the layers are not clear and the colors are unnatural. Specifically, the density difference Δρ can be controlled by the tamping time of the tamping tool on the tamping earth slurry or by adjusting the size of the tamping contact surface. The tamping contact surface is the bottom surface of the tamping head in contact with the tamping earth slurry: the longer the tamping time of the tamping tool on the tamping earth slurry or the larger the tamping contact surface, the greater the tamping effect on the tamping earth slurry, and the greater the density difference Δρ; the shorter the tamping time of the tamping tool on the tamping earth slurry or the smaller the tamping contact surface, the smaller the tamping effect on the tamping earth slurry, and the smaller the density difference Δρ.

[0118] The imitation rammed earth wall concrete material of Example 1 was mixed with water to obtain rammed earth slurry, and its density ρ1 was tested to be 1730 kg / m 3 , using the rammed earth slurry of this density and changing the density difference Δρ to form a rammed earth wall structure, embodiments 6 to 8 are designed, and comparative examples 1 and 2 are set at the same time. The wall density of the specifically designed dense area and the density difference Δρ of the rammed earth slurry and the corresponding wall visual effect are shown in Table 1 and the attached drawings. Figure 20 to Figure 22 shown.

[0119] Table 1

[0120] Example 6 Example 7 Example 8 Comparative Example 1 Comparative Example 2 Density difference Δρ <![CDATA[620 kg / m 3 ]]> <![CDATA[700 kg / m 3 ]]> <![CDATA[660 kg / m 3 ]]> <![CDATA[600 kg / m 3 ]]> <![CDATA[720 kg / m 3 ]]> Comprehensive evaluation of visual effects Clear layers and natural colors Clear layers and natural colors Clear layers and natural colors The layers are not clear and the colors are not natural The layers are not clear and the colors are not natural

[0121] Fig. 20 The rammed earth wall constructed in accordance with Example 8 is specifically an imitation rammed earth wall made by using the imitation rammed earth wall concrete material of Example 1 using the construction method of Example 5, and the density difference Δρ is 620 kg / m 3 The overall color of the wall is earthy yellow, which is close to the color of rammed earth walls in nature. Embodiments 2 to 4 can also use the construction method of Embodiment 5 to prepare imitation rammed earth walls. The difference from Embodiment 1 is that the color depth and wall strength of the imitation rammed earth walls of Embodiments 2 to 4 are slightly different.

[0122] Fig.21 This is the rammed earth wall constructed corresponding to Example 1. It can be seen from the figure that the dense area is not obvious, most of it is loose area, the layers are not clear, and the color is unnatural. Fig. 22 This is the rammed earth wall constructed corresponding to Example 2. It can be seen from the figure that the loose area is not obvious and most of it is a dense area. It also has the disadvantages of unclear layers and unnatural colors.

[0123] After the specific imitation rammed earth wall concrete material of the present invention is subjected to a specific construction process, a specific imitation rammed earth wall is formed, the wall structure is natural and beautiful, and the texture is close to the natural ancient rammed earth wall, which meets people's requirements for wall decoration; and the construction method of the imitation rammed earth wall concrete material provided by the present invention has the characteristic of simple construction. The imitation rammed earth wall concrete material and construction method other than this patent cannot achieve the natural and beautiful effect of the imitation rammed earth wall.

[0124] The imitation rammed earth wall building retains the natural texture of the traditional rammed earth wall, presenting a primitive and simple beauty. The unique texture and color of the rammed earth material make the building harmonious and unified with the surrounding natural environment, creating a warm and comfortable atmosphere. The imitation rammed earth wall building focuses on a simple design style, emphasizing the smoothness of lines and the openness of space. Through simple and smooth lines, natural earth yellow and distinct layers of beauty, it shows a sense of modernity and artistry. On the basis of retaining the traditional rammed earth craftsmanship, the imitation rammed earth wall building incorporates modern construction technology and materials. For example, additives such as cement, gravel, and sand are used to improve the strength and durability of the rammed earth wall; and modern construction equipment is used to improve construction efficiency and quality.

[0125] The imitation rammed earth wall architectural style inherits and carries forward the traditional rammed earth craftsmanship, integrates the concepts and technologies of modern architectural design, and shows a unique aesthetic feature and practical value. It not only has the aesthetic features of nature, primitiveness, simplicity, and lines, but also pays attention to the combination of materials and technology, the balance of quality, and the pursuit of personalization and customization.

[0126] The above description is only an illustrative specific implementation manner of the present invention. Without departing from the concept and principle of the present invention, any equivalent changes and modifications made by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A rammed earth imitation concrete wall material, characterized in that: Made from the following raw materials in parts by weight: White high alumina cement: 10-12 parts by weight; White ordinary Portland cement: 2-3 parts by weight; White hemihydrate gypsum: 3-4 parts by weight; 10~20 mesh golden sand: 6~8 parts by weight; 10-20 mesh yellow sand: 3-5 parts by weight; 10-20 mesh white sand: 4-6 parts by weight; 20-40 mesh white sand: 8-10 parts by weight; 40-80 mesh white sand: 8-10 parts by weight; 3~5mm natural stone: 34~37 parts by weight; 3~5mm red stone: 16~19 parts by weight; Yellow iron oxide: 0.13-0.15 parts by weight; Red iron oxide: 0.02-0.03 parts by weight; Black iron oxide: 0.04-0.05 parts by weight; 200 mesh heavy calcium: 2.5-3 parts by weight; Rutile titanium dioxide: 1.5-2 parts by weight; Waterproofing agent: 0.5~1.5 parts by weight; Efflorescence inhibitor: 0.5-1.5 parts by weight.

2. A construction method for the imitation rammed earth wall concrete material according to claim 1, characterized in that: The following steps are involved: S1. Original wall (1) Wall treatment: remove dust from the wall; S2. preparing rammed earth slurry: mixing the imitation rammed earth wall concrete material and water in a weight ratio of 10:0.8-1.4 to obtain rammed earth slurry; S3, preparing a roughened slurry to form an adhesive layer: roughening the surface of the original wall (1) to form an adhesive layer (2); S4, installing a plurality of hangers (3) on the adhesive layer (2) on the surface of the original wall (1): the hangers (3) include a hanger body (31) that penetrates from top to bottom, an expansion bolt (35), a sleeve (34) and a connecting bolt (37); one side of the hanger body (31) is a mounting portion (32), the mounting portion (32) is fitted and fixed to the adhesive layer (2), and the mounting portion (32) is provided with at least one expansion bolt mounting hole (321); the side opposite to the mounting portion (32) is a connecting portion (33), and the connecting portion (33) is provided with a connecting bolt mounting hole (331), and the outer side of the connecting bolt (37) is provided with an external thread, and one end of the connecting bolt (37) passes through the connecting bolt mounting hole (331); A hole is drilled on the original wall (1), a sleeve (34) is installed in the hole, one end of the expansion bolt (35) is inserted into the sleeve (34), one side of the hanger body (31) is fixedly connected to the other end of the expansion bolt (35), the expansion bolt nut (36) is used to fix the expansion bolt (35) and the hanger body (31), and one end of the connecting bolt (37) is fixed to the other side of the hanger body (31) opposite to the expansion bolt (35); A fixing nut (310) is fixedly arranged outside the connecting bolt mounting hole (331) of the connecting portion (33), and one end of the connecting bolt (37) is threadedly connected to the fixing nut (310) and then passes through the connecting bolt mounting hole (331); or, the connecting bolt mounting hole (331) is a smooth round hole, and the diameter of the connecting bolt mounting hole (331) is larger than the diameter of the connecting bolt (37), and after one end of the connecting bolt (37) passes through the connecting bolt mounting hole (331), a fixing nut (310) is arranged in the inner cavity of the hanging body (31) to movably connect the connecting bolt (37) to the hanging body (31); S5, constructing the bottom template: determining the thickness of the rammed earth wall (8) according to the design requirements, passing the connecting bolts (37) through the reserved holes of the transparent plate (5) and the stiffening keel (9) in sequence, screwing the external nuts (38) on the outer surface of the stiffening keel (9) to connect with the connecting bolts (37), so as to define the position of the transparent plate (5); erecting side plates (6) on both sides of the original wall (1), and forming a casting cavity (7) between the transparent plate (5), the side plates (6) and the roughened layer; When the bonding layer (2) is uneven due to the unevenness of the original wall (1), the distance between the highest point of the protrusion of the bonding layer (2) and the inner side of the transparent plate is taken as the thickness of the rammed earth wall (8); S6, adding rammed earth slurry into the casting cavity (7) in multiple times; the thickness of the rammed earth slurry added at one time is 27 to 30 cm; and then using a ramming tool to ram lightly and then heavily; S7, repeat the process of S5-S6, and cycle from bottom to top to build the template, add the rammed earth slurry and ram the earth; when joining the joints, loosen the soil at the joints first, or leave a little loose soil at the joints, and ram together when filling the rammed earth slurry next time; S8. After the rammed earth slurry solidifies and takes shape, the transparent plate (5) is removed, the connecting bolts (37) are removed, and the holes formed by the removal of the studs are filled with rammed earth slurry. The rammed earth wall (8) is prepared. The rammed earth wall (8) forms a structure of alternating dense areas and loose areas in the height direction.

3. The construction method of imitation rammed earth wall concrete material according to claim 2, characterized in that: In S3, the ratio of the roughened slurry is cement: 108 glue: water = 2:1:

1.

4. The construction method of imitation rammed earth wall concrete material according to claim 2, characterized in that: In S4, the hanging parts (3) are distributed in a five-point plum blossom shape on the wall surface of the original wall (1).

5. The construction method of imitation rammed earth wall concrete material according to claim 2, characterized in that: In S4, a metal mesh fixing portion (39) is fixedly provided on the outer surface of the connecting portion (33) of the hanger body (31); Before S5, the method further includes: installing the metal mesh (4) on the metal mesh fixing portion (39) of the hanging component (3).

6. The construction method of imitation rammed earth wall concrete material according to claim 2, characterized in that: In S4, a penetrating tool connection hole (371) is provided at one end of the connection bolt (37) away from the hanger body (31).

7. The construction method of imitation rammed earth wall concrete material according to claim 2, characterized in that: The transparent plate (5) is provided with scale lines for guiding and controlling the amount of rammed earth slurry added to the pouring cavity (7); A tamping line is also provided on the transparent plate (5) for guiding and controlling the height position of the dense area where the tamping is terminated.

8. The construction method of imitation rammed earth wall concrete material according to claim 2, characterized in that: In S2, the total amount of 3-5 mm natural stones and 3-5 mm red stones is 50-56 parts by weight.

9. The construction method of imitation rammed earth wall concrete material according to claim 2, characterized in that: The difference Δρ between the wall density in the dense area and the density of the rammed earth slurry is in the range of 620 kg / m 3 ~700 kg / m 3 .

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