CN108748623B - High-efficiency molding method of high-pressure microorganism soil-fixing hollow brick - Google Patents
High-efficiency molding method of high-pressure microorganism soil-fixing hollow brick Download PDFInfo
- Publication number
- CN108748623B CN108748623B CN201810613956.7A CN201810613956A CN108748623B CN 108748623 B CN108748623 B CN 108748623B CN 201810613956 A CN201810613956 A CN 201810613956A CN 108748623 B CN108748623 B CN 108748623B
- Authority
- CN
- China
- Prior art keywords
- plates
- longitudinal side
- geotextile
- bottom plate
- hollow brick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/162—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes for building blocks or similar block-shaped articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a high-efficiency molding method of a high-pressure microorganism soil-fixing hollow brick, which comprises the following steps: 1) preparing materials required by the die; 2) assembling an organic glass plate with holes; 3) manufacturing a light mold, and cutting the geotextile according to the size; 4) disassembling two transverse screws; 5) installing a PVC pipeline in the rectangular model cavity; 6) adding sand into the cavity surrounded by the geotextile, and sewing a geotextile top cover; 7) the distance between the two longitudinal side plates is fixed through the two transverse screw rods; 8) pouring prepared bacteria into the test piece, and then putting the whole mould into a chemical solution under the pressure of 2 standard atmospheric pressures; 9) and forming the biological soil-fixing hollow brick after reacting for 3 days. Compared with the traditional hollow brick, the high-pressure microorganism soil-fixing high-efficiency formed hollow brick does not need high-temperature sintering forming, reduces air pollution, protects the environment, and is an ecological environment-friendly method.
Description
Technical Field
The invention relates to a method for manufacturing a hollow brick, in particular to a high-efficiency molding method of a high-pressure microorganism soil-fixing hollow brick.
Background
In the period of high-speed economic development, the demand of construction land is continuously expanded in China, more infrastructure construction is needed to meet the production and living demands of people, and the current construction land resources are very limited, so that the land or sand which cannot meet the engineering demand needs to be solidified and improved. The traditional soil improvement method usually needs to add a series of polluting chemical components, which may bring water pollution problem and even affect human health.
Where the item group isThe research team is researching novel environment-friendly soil and sand reinforcing technology, and a microorganism induced calcium carbonate precipitation method utilizing a biological mineralization process widely existing in the nature is adopted, namely, according to a urea hydrolysis microorganism induced calcium carbonate precipitation mechanism, biological reactants (urea and NH)4 +、Ca2+Calcium ion concentration), catalyst (bacteria and urease concentration) and reaction concentration (pH and temperature) to hydrolyze urea, generate calcium carbonate precipitate in soil and sand, and further solidify the soil and sand, and the method is also called biological soil fixation method.
Because the microorganism-induced calcium carbonate precipitation method has the advantages of simple mechanism, rapidness, high efficiency, easy control and good environmental weather resistance, the scientific research team of the project group is supposed to apply the technology to building materials, namely bricks or building blocks required by building construction are produced by the method. According to the rules of human production and scientific research, a large number of mechanical property tests are required to be carried out on the novel product before actual engineering application, for example, the mechanical property tests are carried out on the microbial solid soil hollow brick, so that basic data and scientific basis are provided for the actual application of the technology, and the safety and reliability of infrastructure and houses are ensured.
The cement and sintered shale solid bricks and hollow bricks which are adopted in China in large quantity in the current building engineering need to damage the earth surface natural environment resources at the cost in the processes of raw material extraction, product production and component processing and forming, and a large amount of smoke dust powder is generated in the production process, so that a large amount of high-temperature energy is consumed, and the environment is seriously polluted. How to utilize the principle of microorganism soil fixation to produce the air brick fast has always been a difficult problem puzzling researchers, on this basis, has designed a microorganism soil fixation air brick forming method, lays the foundation for later stage scientific research experiment.
Disclosure of Invention
Aiming at the defects of the existing hollow brick production, the invention provides the high-efficiency molding method of the high-pressure microorganism soil-fixing hollow brick, which does not need high-temperature sintering molding, reduces air pollution and protects the environment.
In order to solve the technical problems, the invention adopts the following technical scheme:
the high-efficiency molding method of the high-pressure microorganism soil-fixing hollow brick comprises the following steps:
1) preparing materials required by the mold: preparing two longitudinal side plates, a bottom plate, two end plates, two longitudinal side plate positioning plates and two end plate positioning plates; the longitudinal side plates, the bottom plate, the end plates, the longitudinal side plate positioning plates and the end plate positioning plates are all organic glass plates with holes, and the holes in the organic glass plates are arranged in a staggered mode;
2) assembling the organic glass plate with the holes:
2.1) firstly, placing two longitudinal side plate positioning plates and two end plate positioning plates on a bottom plate in parallel and respectively close to four sides of the bottom plate, wherein the two longitudinal side plate positioning plates and the two end plate positioning plates are respectively fixed on the bottom plate through short screws and nuts;
2.2) the two longitudinal side plates are respectively vertically placed on the bottom plate and lean against the inner sides of the two longitudinal side plate positioning plates; the two end plates are vertically arranged on the bottom plate and lean against the inner sides of the two end plate positioning plates respectively, and the two end plates press the end parts of the two longitudinal side plates;
2.3) the two longitudinal screws are respectively positioned at the outer sides of the two longitudinal side plates, two ends of the two longitudinal screws respectively penetrate through the two end plates, nuts are respectively screwed on two ends of the two longitudinal screws, and the two end plates are tightly pressed on the two longitudinal side plates by screwing the nuts;
2.4) two grooves are respectively arranged at the tops of the two longitudinal side plates, two transverse screws are respectively and transversely placed in the grooves at the tops of the two longitudinal side plates, nuts are respectively screwed on the two ends of the two transverse screws and positioned at the inner side and the outer side of the longitudinal side plates, the two nuts at the end parts of the transverse screws are clamped on the corresponding longitudinal side plates, and the distance between the two longitudinal side plates is adjusted by adjusting the nuts on the two transverse screws, so that the two longitudinal side plates, the two end plates and a bottom plate form a three-dimensional rectangular model cavity;
3) manufacturing a light mold for cutting the geotextile I: manufacturing a light model by using a light material, wherein the length and the width of the light model are equal to those of a rectangular model cavity, the height of the light model is lower than that of the rectangular model cavity, and then cutting the geotextile I according to the size of the light material;
4) loosening nuts on two ends of the two transverse screws, disassembling the two transverse screws, placing the cut geotextile I in a rectangular model cavity, and sewing seams except the top cover on the cut geotextile I;
5) installation of PVC pipes: firstly, respectively arranging a plurality of mounting holes corresponding to the positions and sizes of the pore passages of the hollow bricks on the two end plates, and simultaneously arranging through holes on the geotextile I corresponding to the mounting holes of the two end plates; uniformly arranging a plurality of small holes on the pipe wall of the PVC pipeline, cutting geotextile II and finely sewing to seal the periphery of the whole PVC pipeline; then, the PVC pipeline is installed in the rectangular model cavity, two ends of the PVC pipeline respectively penetrate through the corresponding through hole and the installation hole, and meanwhile, a small exhaust pipe is placed in the PVC pipeline;
6) adding sand into a cavity enclosed by the geotextile I, and finally sewing a top cover of the geotextile I;
7) two transverse screws are respectively and transversely placed in the grooves at the tops of the two longitudinal side plates, and then the distance between the two longitudinal side plates is fixed through nuts at the two ends of the two transverse screws, so that the test piece is manufactured;
8) pouring prepared bacteria into the test piece, and after the bacteria completely pour and wet the whole sandy soil, putting the whole mould into a sealed reaction box filled with chemical solution; the lower part of one side wall of the box body of the sealed reaction box is provided with an air guide hole, the top of one side wall of the box body of the sealed reaction box is provided with a pressurizing hole, the top of the other side wall of the box body of the sealed reaction box is provided with a pressure relief hole, the top surface of the box body of the sealed reaction box is provided with a sealing strip along the peripheral direction, the front side and the left side and the right side of the box cover of the sealed reaction box are respectively provided with an upper locking plate, and the front side and the left side and the right side of the top of the box body of; the exhaust pipe is connected with an air pump through a rubber pipe, air is introduced into the PVC pipeline through the air pump, and simultaneously air is introduced into the chemical solution through the air guide hole to increase oxygen components, so that the aim of improving the reaction speed of the catalyst and the nutrient solution can be fulfilled; injecting high-pressure gas into the sealed reaction box through a pressurizing hole at the top of the side wall of the sealed reaction box, so that the pressure in the sealed reaction box is at 2 standard atmospheric pressures; the chemical solution is formed by mixing ammonium chloride, nutrient solution, calcium bicarbonate, urea and calcium chloride, the pH value is 6.0, and the weight ratio of the ammonium chloride to the nutrient solution to the calcium bicarbonate to the urea to the calcium chloride is 1001: 302: 214: 8998: 22042;
9) after reacting for 3 days, forming the hollow brick in the geotextile I, forming a large amount of calcium carbonate in the sand by the hollow brick, taking out the test piece from the reaction liquid, loosening nuts on the two longitudinal screw rods and the two transverse screw rods, taking out the two longitudinal side plates, the two end plates and the PVC pipeline after loosening, and taking apart the geotextile I to obtain the biological soil-fixation hollow brick with flat surface, uniform internal texture and high strength after molding.
As a preferable scheme of the invention, the longitudinal screw, the transverse screw, the short screw and the nut are all wound with waterproof plastic paper or a water adhesive tape.
As another preferred scheme of the invention, the height of the nut at the lower part of the bottom plate is larger than the length of the short screw rod extending out of the lower part of the bottom plate, and the nut at the lower part of the bottom plate is used as a support of the die.
Compared with the prior art, the invention has the following advantages:
1. compared with the traditional hollow brick, the high-pressure microorganism soil-fixing formed hollow brick does not need high-temperature sintering forming, reduces air pollution, protects the environment, and is an ecological environment-friendly method.
2. A plurality of holes are arranged in the organic glass, so that the nutrient solution can conveniently permeate into the silt soil through the geotextile in the mould to generate a large amount of CaCO3And the soil-fixing effect is good.
3. Set up PVC pipeline and corresponding aperture in the core region of brick, can carry the air to the inside core region of biological brick well, can make the reaction more abundant.
4. By changing the size and the number of the PVC pipelines, the strength and the porosity of the microorganism soil-fixing hollow brick can be controlled, and corresponding theoretical and experimental researches can be conveniently carried out in the later period.
5. Through the device of high pressure (pressure is two standard atmospheric pressures), can accelerate nutrient solution to permeate the inside of silt fast for reaction rate, reduced the time of reaction, reduced to three days by traditional seven days reaction time, enable bacterium and nutrient solution to react fast and generate the very high CaCO of intensity3The strength of the hollow brick block produced under the high-pressure condition can reach 1.2 times of that of the hollow brick block produced under the non-high-pressure condition, and the reaction effect is good.
6. By using the chemical solution of the invention in the ratio: ammonium chloride (10.01g/L), nutrient solution (3.02g/L), calcium bicarbonate (2.14g/L), urea (89.98g/L), calcium chloride (220.42g/L), pH value of 6.0, can make bacteria and nutrient solution quickly react, and effectively utilizes CO3 2-Ions and Ca2+Calcium ions.
7. The organic glass sheet is connected through the screw and the nut, flexible installation and reliable forming can be realized, the mold can be rapidly and conveniently detached after the test piece of the reaction vessel is formed, and no influence is caused on the newly formed test piece.
8. By utilizing the flatness of the surface of the organic glass and the good water permeability of the holes, the edges and corners of the cuboid test piece formed after the chemical reaction are clear, the surface flatness is high, the texture is uniform, the mechanical property is stable, and the scientific research test for testing the bending resistance performance in the later period is facilitated.
9. The size of the organic glass sheets and the positions of the bolts on the periphery of the model can be adjusted according to the actual size of the model, so that the displacement of the side plates on the periphery is effectively limited; the overall stability of the die is conveniently improved by adjusting the bolts through the longitudinal screws.
10. Through the regulation of the screw rod and the nut position of vertical curb plate top, the shape of accurate control mould guarantees the geometric dimensions of mould, and after the model reaction in the mould was accomplished, only need take out the screw rod of taking the nut from the top, dismantles the mould rapidly.
11. The geotextile is sewn by utilizing the mold made of the light material, so that the purposes of accurate size, easy forming and efficiency improvement can be achieved.
Drawings
FIG. 1 is a schematic structural view of a mold;
FIG. 2 is a schematic structural view of a lightweight mold;
FIG. 3 is a schematic structural view of PVC pipes arranged in a rectangular mold cavity;
FIG. 4 is a schematic structural view of a PVC pipe;
FIG. 5 is a schematic view of a structure of a test piece immersed in a chemical solution;
fig. 6 is a schematic structural diagram of a biological solid soil hollow brick.
In the figure: 1-longitudinal side plate; 2-a bottom plate; 3-end plate; 4, longitudinal side plate positioning plates; 5, a longitudinal screw; 6-transverse screw rod; 7-short screw; 8-paper shell; 9-geotextile; 10-chemical solution; 11-biological soil-fixing hollow bricks; 12-PVC piping; 13-small hole; 14-an exhaust pipe; 15-sealing the reaction box; 16-a rubber tube; 17-air vents; 18-a pressurized orifice; 19-pressure relief holes; 20-sealing strip; 21-upper locking plate; 22-lower locking plate.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
The high-efficiency molding method of the high-pressure microorganism soil-fixing hollow brick comprises the following steps:
1) preparing materials required by the mold: two longitudinal side plates 1, a bottom plate 2, two end plates 3, two longitudinal side plate positioning plates 4, and two end plate positioning plates are prepared. The longitudinal side plates 1, the bottom plate 2, the end plates 3, the longitudinal side plate positioning plates 4 and the end plate positioning plates are all organic glass plates with holes, and the holes in the organic glass plates are arranged in a staggered mode. The organic glass plate with the holes can be obtained by drilling holes in the organic glass plate, or by purchasing the organic glass with the holes, the diameter of each hole is 5mm, the clear distance between the holes is 2.5mm, the holes in adjacent rows are arranged in a staggered mode to form the plum blossom-shaped holes, in addition, the clear distance between the holes and the diameter of the holes can be modified and adjusted according to actual needs, and the size of the longitudinal side plate 1, the bottom plate 2 and the end plate 3 is determined according to the size of the biological hollow brick. In order to prevent the corrosion of chemical substances, the longitudinal screw 5, the transverse screw 6, the short screw 7 and the nut are wound with waterproof plastic paper or a water adhesive tape.
2) Assembling the organic glass plate with the holes:
2.1) firstly, two longitudinal side plate positioning plates 4 and two end plate positioning plates are parallelly placed on the bottom plate 2 and are respectively close to four sides of the bottom plate 2, and the two longitudinal side plate positioning plates 4 and the two end plate positioning plates are respectively fixed on the bottom plate 2 through short screws 7 and nuts. The height of the nut at the lower part of the bottom plate 2 is larger than the length of the short screw 7 extending out of the lower part of the bottom plate 2, and the nut at the lower part of the bottom plate 2 is used as a support of the die.
2.2) the two longitudinal side plates 1 are respectively vertically placed on the bottom plate 2 and lean against the inner sides of the two longitudinal side plate positioning plates 4; two end plates 3 are vertically placed on the bottom plate 2 and lean against the inner sides of the two end plate positioning plates respectively, and the two end plates 3 press the end parts of the two longitudinal side plates 1.
2.3) the two longitudinal screws 5 are respectively positioned at the outer sides of the two longitudinal side plates 1, the two ends of the two longitudinal screws 5 respectively penetrate through the two end plates 2, nuts are respectively screwed on the two ends of the two longitudinal screws 5, and the two end plates 3 are tightly pressed on the two longitudinal side plates 1 by screwing the nuts.
2.4) the top of two vertical curb plates 1 sets up two recesses respectively, two horizontal screw rods 6 transversely place respectively in the recess at two vertical curb plate 1 tops, two horizontal screw rods 6's both ends, and be located the inboard of vertical curb plate 1 and the outside and revolve the nut respectively, two nuts card of horizontal screw rod 6 tip are on corresponding vertical curb plate 1, and then adjust the distance between two vertical curb plates 1 through adjusting the nut on two horizontal screw rods 6, in order to reach the purpose that prevents vertical curb plate 1 slope, guaranteed that the model after the shaping is level and upright, make two vertical curb plates 1, two end plates 3 and a bottom plate 2 constitute three-dimensional rectangle model chamber, the inside size length of mould after the shaping is multiplied by the width by the height and is 360mm multiplied by 120mm, as shown in figure 1.
3) Manufacturing a light mould required for cutting geotextile I9: the light model is made of light materials (such as a paper shell 8), the length and the width of the light model are equal to those of the rectangular model cavity, the height of the light model is lower than that of the rectangular model cavity, and then the geotextile I9 is cut according to the size of the light materials, as shown in figure 2.
4) And loosening nuts at two ends of the two transverse screws 6, disassembling the two transverse screws 6, placing the cut geotextile I9 in a rectangular model cavity, and sewing seams except the top cover on the cut geotextile I9.
5) Installation of PVC piping, as shown in fig. 3: a plurality of mounting holes corresponding to the positions and the sizes of the pore passages of the hollow bricks are respectively formed in the two end plates 3, and through holes are formed in the positions, corresponding to the mounting holes of the two end plates 3, of the geotextile I9. In order to facilitate the transportation of air in the solution, a plurality of small holes 13 are uniformly distributed on the pipe wall of the PVC pipe 12, as shown in FIG. 4. In order to prevent fine sand from blocking the small holes 13 of the PVC pipeline 12 in the test, cutting geotextile II and finely sewing, and sealing the periphery of the whole PVC pipeline 12; and then the PVC pipeline 12 is arranged in the rectangular model cavity, the two ends of the PVC pipeline 12 respectively penetrate through the corresponding through hole and the corresponding mounting hole, meanwhile, the small exhaust pipe 14 is arranged in the PVC pipeline 12, the purpose of the small hole 13 is to better permeate air, under the action of an air pump, the air of the exhaust pipe 14 passes through the small hole 13 in the PVC pipeline 12, the air can be well conveyed to the inner core area of the hollow brick, and the reaction can be more sufficient.
6) Add sand in the cavity that encloses toward geotechnological cloth I9, make up geotechnological cloth I9 top cap at last.
7) For preventing the deformation of two vertical curb plates 1, transversely place two horizontal screw rods 6 respectively in the recess at two vertical curb plate 1 tops again, the nut on 6 both ends of two horizontal screw rods of rethread makes the distance between two vertical curb plates 1 fixed, and the test piece preparation is accomplished this moment.
8) The prepared bacteria are poured into the test piece, and after the bacteria completely wet the whole sandy soil, the whole mold is put into a sealed reaction box 15 filled with a chemical solution 10, as shown in fig. 5. The lower part of one side wall of the box body of the sealed reaction box 15 is provided with an air guide hole 17, the top part of one side wall of the box body of the sealed reaction box 15 is provided with a pressurizing hole 18, the top part of the other side wall of the box body of the sealed reaction box 15 is provided with a pressure relief hole 19, the top surface of the box body of the sealed reaction box 15 is provided with a sealing strip 20 along the peripheral direction, the front side and the left side and the right side of the box cover of the sealed reaction box 15 are respectively provided with an upper locking plate 21, the front side and the left side and the right side of the top part of the box body of the sealed reaction box 15 are respectively provided with a lower locking plate 22 in one-to-one correspondence with the upper locking plates 21, when the box cover is covered on the box body, a bolt penetrates through. The exhaust pipe 14 is connected with an air pump through a rubber pipe 16, air is introduced into the PVC pipeline 12 through the air pump, and simultaneously air is introduced into the chemical solution through the air guide hole 17 to increase oxygen components, so that the aim of improving the reaction speed of the catalyst and the nutrient solution can be fulfilled. High pressure gas is injected into the sealed reaction chamber 15 through a pressurizing hole 18 at the top of the side wall of the sealed reaction chamber 15, so that the pressure in the sealed reaction chamber is 2 standard atmospheric pressures. The chemical solution consists of ammonium chloride (10.01g/L), nutrient solution (3.02g/L), calcium bicarbonate (2.14g/L), urea (89.98g/L) and calcium chloride (220.42g/L), and the pH value is 6.0.
9) After reacting for 3 days, forming a hollow brick in the geotextile I9, forming a large amount of calcium carbonate in the sand by the hollow brick, taking out the test piece from the reaction liquid, loosening nuts on the two longitudinal screws 5 and the two transverse screws 6, taking out the two longitudinal side plates 1, the two end plates 3 and the PVC pipeline 12 after loosening, and disassembling the geotextile I9 to obtain the biological soil-fixing hollow brick 11 which is flat in surface, uniform in internal texture and high in strength after molding, as shown in figure 6. The biological soil-fixation hollow brick 11 can be well used for mechanical property tests, and provides a basic theoretical basis for popularization and application of the technology in the later period.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (3)
1. The high-efficiency molding method of the high-pressure microorganism soil-fixing hollow brick comprises the following steps:
1) preparing materials required by the mold: preparing two longitudinal side plates, a bottom plate, two end plates, two longitudinal side plate positioning plates and two end plate positioning plates; the longitudinal side plates, the bottom plate, the end plates, the longitudinal side plate positioning plates and the end plate positioning plates are all organic glass plates with holes, and the holes in the organic glass plates are arranged in a staggered mode;
2) assembling the organic glass plate with the holes:
2.1) firstly placing two longitudinal side plate positioning plates on a bottom plate in parallel, placing two end plate positioning plates on the bottom plate in parallel and respectively approaching to four sides of the bottom plate, and respectively fixing the two longitudinal side plate positioning plates and the two end plate positioning plates on the bottom plate through short screws and nuts;
2.2) the two longitudinal side plates are respectively vertically placed on the bottom plate and lean against the inner sides of the two longitudinal side plate positioning plates; the two end plates are vertically arranged on the bottom plate and lean against the inner sides of the two end plate positioning plates respectively, and the two end plates press the end parts of the two longitudinal side plates;
2.3) the two longitudinal screws are respectively positioned at the outer sides of the two longitudinal side plates, two ends of the two longitudinal screws respectively penetrate through the two end plates, nuts are respectively screwed on two ends of the two longitudinal screws, and the two end plates are tightly pressed on the two longitudinal side plates by screwing the nuts;
2.4) two grooves are respectively arranged at the tops of the two longitudinal side plates, two transverse screws are respectively and transversely placed in the grooves at the tops of the two longitudinal side plates, nuts are respectively screwed on the two ends of the two transverse screws and positioned at the inner side and the outer side of the longitudinal side plates, the two nuts at the end parts of the transverse screws are clamped on the corresponding longitudinal side plates, and the distance between the two longitudinal side plates is adjusted by adjusting the nuts on the two transverse screws, so that the two longitudinal side plates, the two end plates and the bottom plate form a three-dimensional rectangular model cavity;
3) manufacturing a light mold for cutting the geotextile I: manufacturing a light model by using a light material, wherein the length and the width of the light model are equal to those of a rectangular model cavity, the height of the light model is lower than that of the rectangular model cavity, and then cutting the geotextile I according to the size of the light material;
4) loosening nuts on two ends of the two transverse screws, disassembling the two transverse screws, placing the cut geotextile I in a rectangular model cavity, and sewing seams except the top cover on the cut geotextile I;
5) installation of PVC pipes: firstly, respectively arranging a plurality of mounting holes corresponding to the positions and sizes of the pore passages of the hollow bricks on the two end plates, and simultaneously arranging through holes on the geotextile I corresponding to the mounting holes of the two end plates; uniformly arranging a plurality of small holes on the pipe wall of the PVC pipeline, cutting geotextile II and finely sewing to seal the periphery of the whole PVC pipeline; then, the PVC pipeline is installed in the rectangular model cavity, two ends of the PVC pipeline respectively penetrate through the corresponding through hole and the installation hole, and meanwhile, a small exhaust pipe is placed in the PVC pipeline;
6) adding sand into a cavity enclosed by the geotextile I, and finally sewing a top cover of the geotextile I;
7) two transverse screws are respectively and transversely placed in the grooves at the tops of the two longitudinal side plates, and then the distance between the two longitudinal side plates is fixed through nuts at the two ends of the two transverse screws, so that the test piece is manufactured;
8) pouring prepared bacteria into the test piece, and after the bacteria completely pour and wet the whole sandy soil, putting the whole mould into a sealed reaction box filled with chemical solution; the lower part of one side wall of the box body of the sealed reaction box is provided with an air guide hole, the top of one side wall of the box body of the sealed reaction box is provided with a pressurizing hole, the top of the other side wall of the box body of the sealed reaction box is provided with a pressure relief hole, the top surface of the box body of the sealed reaction box is provided with a sealing strip along the peripheral direction, the front side and the left side and the right side of the box cover of the sealed reaction box are respectively provided with an upper locking plate, and the front side and the left side and the right side of the top of the box body of; the exhaust pipe is connected with an air pump through a rubber pipe, air is introduced into the PVC pipeline through the air pump, and simultaneously air is introduced into the chemical solution through the air guide hole to increase oxygen components, so that the aim of improving the reaction speed of the catalyst and the nutrient solution can be fulfilled; injecting high-pressure gas into the sealed reaction box through a pressurizing hole at the top of the side wall of the sealed reaction box, so that the pressure in the sealed reaction box is at 2 standard atmospheric pressures; the chemical solution is formed by mixing ammonium chloride, nutrient solution, calcium bicarbonate, urea and calcium chloride, the pH value is 6.0, and the weight ratio of the ammonium chloride to the nutrient solution to the calcium bicarbonate to the urea to the calcium chloride is 1001: 302: 214: 8998: 22042;
9) after reacting for 3 days, forming the hollow brick in the geotextile I, forming a large amount of calcium carbonate in the sand by the hollow brick, taking out the test piece from the reaction liquid, loosening nuts on the two longitudinal screw rods and the two transverse screw rods, taking out the two longitudinal side plates, the two end plates and the PVC pipeline after loosening, and taking apart the geotextile I to obtain the biological soil-fixation hollow brick with flat surface, uniform internal texture and high strength after molding.
2. The high-efficiency molding method of the high-pressure microorganism soil-fixing hollow brick as claimed in claim 1, which is characterized in that: the longitudinal screw, the transverse screw, the short screw and the nut are all wound with waterproof plastic paper or a water adhesive tape.
3. The high-efficiency molding method of the high-pressure microorganism soil-fixing hollow brick as claimed in claim 2, characterized in that: the height of the nut at the lower part of the bottom plate is larger than the length of the short screw rod extending out of the lower part of the bottom plate, and the nut at the lower part of the bottom plate is used as a support of the die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613956.7A CN108748623B (en) | 2018-06-14 | 2018-06-14 | High-efficiency molding method of high-pressure microorganism soil-fixing hollow brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613956.7A CN108748623B (en) | 2018-06-14 | 2018-06-14 | High-efficiency molding method of high-pressure microorganism soil-fixing hollow brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108748623A CN108748623A (en) | 2018-11-06 |
| CN108748623B true CN108748623B (en) | 2020-01-03 |
Family
ID=64022728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810613956.7A Active CN108748623B (en) | 2018-06-14 | 2018-06-14 | High-efficiency molding method of high-pressure microorganism soil-fixing hollow brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108748623B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664974B (en) * | 2021-09-18 | 2022-08-02 | 重庆科技学院 | Injection type microbial clay brick production method |
| CN113681700B (en) * | 2021-09-18 | 2022-07-26 | 重庆科技学院 | Batch production method of injection type microbial clay bricks |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU2464U (en) * | 2002-06-25 | 2003-03-28 | Szekeres Gyoergy Dr | Hand instrument set for constructing tissue array |
| CN203945464U (en) * | 2014-06-16 | 2014-11-19 | 苏州市建筑材料再生资源利用有限公司 | Construction refuse regenerated porous noise reduction bricks die |
| CN105297705A (en) * | 2015-10-14 | 2016-02-03 | 内蒙古工业大学 | Biological sandstone preparation method and device based on MICP (Microbial Induced Carbonate Precipitation) technology |
| CN105699161A (en) * | 2016-01-14 | 2016-06-22 | 河海大学 | Size-adjustable mold adaptive to concrete samples in various sizes |
| CN105806688B (en) * | 2016-03-28 | 2018-05-25 | 重庆工业职业技术学院 | The production method of the solid native test beam of biology used in architectural engineering |
| CN105865863B (en) * | 2016-03-28 | 2018-07-13 | 重庆科技学院 | The solid native bar beam forming method of biology for beam test |
| CN105804318B (en) * | 2016-03-28 | 2017-11-10 | 重庆科技学院 | A kind of main spar batch forming method of the solid soil of biology |
| CN206913381U (en) * | 2017-06-16 | 2018-01-23 | 广东三和管桩股份有限公司 | A kind of porous permeable bricks die |
| CN206945689U (en) * | 2017-07-24 | 2018-01-30 | 河海大学 | Microorganism grouting test device for uniform curing silt |
-
2018
- 2018-06-14 CN CN201810613956.7A patent/CN108748623B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108748623A (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104909460B (en) | Porosity denitrogenation dephosphorizing filler for artificial swamp and preparation method thereof | |
| CN108748623B (en) | High-efficiency molding method of high-pressure microorganism soil-fixing hollow brick | |
| CN105350517A (en) | Method for consolidating subsoil through microorganisms in circulating grouting mode | |
| CN108911605B (en) | Method for producing prefabricated drainage pipeline by microorganism-induced calcium carbonate precipitation in negative pressure environment | |
| CN203922957U (en) | Septic tank | |
| CN109001014B (en) | High-pressure microbial soil-fixing hollow brick batch high-efficiency forming method | |
| CN106830381A (en) | Seabed oxygen-increasing device | |
| CN105804318A (en) | Method for batched formation of square beams for biological soil reinforcement | |
| CN207193946U (en) | Utilize the device of microorganism induction generation calcium carbonate soil mass consolidation | |
| CN201319768Y (en) | Continuous casting green concrete member | |
| CN105806688B (en) | The production method of the solid native test beam of biology used in architectural engineering | |
| CN103273562A (en) | Device and method of manufacturing cement-based building material components by using carbon dioxide | |
| CN207465493U (en) | A kind of curing with carbon dioxide room of concrete | |
| CN103775069B (en) | Suspended state hydrate formation simulator and stratum analogy method | |
| CN105865863B (en) | The solid native bar beam forming method of biology for beam test | |
| CN113681700B (en) | Batch production method of injection type microbial clay bricks | |
| CN202344671U (en) | Production device for concrete precast element | |
| CN106499112A (en) | The structure-integrated ventilation wallboard of a kind of thermal insulation green | |
| CN115508215A (en) | Pile soil testing device considering complex field state coupling effect | |
| CN105645915A (en) | Ceramsite composite self-heat-insulation wall material and method for preparing same | |
| CN108571192B (en) | Be applied to thermal-insulation shed of cold area methane-generating pit | |
| CN113664974B (en) | Injection type microbial clay brick production method | |
| CN115949052B (en) | CO2Device and method for reinforcing calcareous sand foundation | |
| CN204310929U (en) | Domestic type glass toughening manure pit | |
| CN114230253B (en) | Sea sand solidified body and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |