A method for field mixing of a road surface using cement as an energy agent

Abstract

The application discloses a kind of road surface field mixing construction method with cement as energy agent, comprising the following steps: S1, operation surface preparation: according to the corresponding requirements of highway grade reaches standard requirement;S2, material preparation: selected area is enough, soil and water source sufficient mixing field, and to soil collection, cement and tianran enzyme are prepared;S3, equipment preparation;S4, raw material mixing: cement is mixed with soil and obtains raw material;S5, biological enzyme solution preparation: tianran enzyme is dissolved in water according to proportion and carries out the preparation of spraying device;S5, tianran enzyme solution spraying operation;S6, paving and rolling forming;S7, static rolling, fine flat and strong rolling;S8, seal operation: the operation surface that is rolled completes is scattered dry powder cement, and is rolled with road roller static, and solves the technical problems that construction progress and construction quality cannot be guaranteed in prior art when using cement as energy agent, operation requirement is very high to front and back field.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of road construction, and particularly relates to a road surface field mixing construction method using cement as an energy agent. BACKGROUND

[0002] The Tai Ran biological enzyme construction is usually constructed by using the road mixing method. The road mixing method is a very efficient construction method, which is fast in speed and low in operation cost, and is the preferred construction method for everyone, but often needs suitable construction environment and good construction equipment, and the conditions of the road mixing method are often not met in the field construction process, and the cement is used as the energy agent, and the cement has the limitation of initial setting time, so the mixed clinker needs to be immediately paved and rolled, and therefore how to realize the connection between the rapid field mixing material and the operation surface is a difficult problem that the technical personnel in the field have been thinking about. SUMMARY

[0003] The present application aims to provide a road surface field mixing construction method using cement as an energy agent, and solve the technical problem that the use of cement as an energy agent in the prior art requires high operation requirements before and after the field, and cannot guarantee the construction progress and construction quality.

[0004] The technical scheme adopted by the present application to solve the technical problem is as follows:

[0005] A road surface field mixing construction method using cement as an energy agent, comprising the following steps:

[0006] S1, operation surface preparation: according to the corresponding requirements of the highway grade reaching the standard;

[0007] S2, material preparation: selecting a mixing field with sufficient area, sufficient soil and water source, and preparing the soil, cement and Tai Ran enzyme;

[0008] S3, equipment preparation: preparing the large excavator, loader and water pumping device used in the mixing field, and the transfer vehicle and road roller used in the operation surface;

[0009] S4, raw material mixing: mixing cement and soil to obtain raw material;

[0010] S5, biological enzyme solution preparation: dissolving Tai Ran enzyme in water according to the proportion and preparing the spraying device;

[0011] S6, Tai Ran enzyme solution spraying operation: continuously moving and mixing the dry material in step S4 using the excavator, and spraying the Tai Ran enzyme solution to the material pile during the mixing process to obtain clinker;

[0012] S7, paving and rolling forming: transporting the clinker to the operation surface using the transfer vehicle to pave and compact, and the operator goes to the operation surface site along with the vehicle;

[0013] S8, static rolling, accurate leveling and strong rolling: the paved road is flattened and compacted, and then static rolling is carried out multiple times in the manner of first two sides and then the middle, accompanied by accurate leveling, then small vibration is carried out once, and three times of slow strong vibration rolling is carried out;

[0014] S9, seal coat operation: dry powder cement is sprayed on the completed rolling operation surface, and a road roller is used for static rolling and finishing.

[0015] The road surface field mixing construction method with cement as energy agent, the mixing field in step s2 has sufficient water source that can be used by pumping, power supply that can be connected, and area size that is sufficient for the operation of excavators and loaders.

[0016] The road surface field mixing construction method with cement as energy agent, the soil preparation in step s2 is 100 cubic meters, and the 100 cubic meters of soil is stacked in a conical heap state at the mixing position.

[0017] The road surface field mixing construction method with cement as energy agent, the cement in step s2 is sent to the soil pile in an amount of 7.5 tons plus 2 bags in time.

[0018] The road surface field mixing construction method with cement as energy agent, the solution preparation container in step s5 is used to prepare the solution, and 4.2 liters of tarenase are added.

[0019] The road surface field mixing construction method with cement as energy agent, two submersible pumps with a flow rate of 1.5 cubic meters / hour are put into the solution preparation container for spraying operation, and each submersible pump is connected with a spray gun.

[0020] The road surface field mixing construction method with cement as energy agent, in the spraying operation, two spray guns cooperate with the mixing of the excavator to spray tarenase solution to the pile, one is mainly responsible for spraying the old pile, and the other is mainly responsible for spraying the new pile.

[0021] The road surface field mixing construction method with cement as energy agent, the sprayed pile is finely mixed twice, and the pile is finely mixed twice by the excavator.

[0022] The road surface field mixing construction method with cement as energy agent, the thickness of the semi-tight paving layer after rolling in step s7 reaches 25-26 cm, the surface is flat, the corner material is full, and the ultra-wide material is more than 40 cm.

[0023] The road surface field mixing construction method with cement as energy agent, the operation time of step s4 is 10-15 minutes, and the operation time of step s5 is 18-25 minutes.

[0024] The beneficial effects of the present application are: a road surface field mixing construction method using cement as an energy agent, which strictly controls the mixing quality and operation time by controlling the delivery time and delivery amount of cement matched with the batch of soil, and the mixing and paving time, so as to realize high-quality and high-efficiency construction; the hardness quality of the road surface is improved by controlling the proportion of the amount of enzyme; the mixing quality is improved by multiple fine mixing and removing impurities in the soil, thereby improving the road surface quality; the personnel utilization rate is improved by sharing the front and rear field personnel, and the mixing and paving time can be effectively controlled; the seal coat is formed by thinly spreading dry powder cement to prevent the volatilization of active ingredients. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0026] A road surface field mixing construction method using cement as an energy agent, comprising the following steps

[0027] 1. Construction preparation

[0028] The preparation work is divided into operation surface preparation, mixing field preparation, material preparation, mechanical and tool personnel preparation.

[0029] A. Operation surface preparation: the operation surface of the biological enzyme water stable structure is the roadbed. The requirements of the present embodiment for the roadbed are consistent with the requirements of the national standard for ordinary road roadbed. That is, the main performance indicators meet the requirements of the roadbed 93 surface.

[0030] The main indicators are specifically: compactness ≥ 93%; deflection value ≤ 200 (1 / 100 mm).

[0031] In the indicators of the 93 surface, there is also a flatness of less than or equal to 3 cm (three-meter flat ruler). However, this is a temporary construction road. Therefore, it is relaxed to ≤5 cm.

[0032] B. Mixing field preparation: a location is selected through on-site investigation, which has sufficient mixing operation area, sufficient and convenient soil access, natural water source for water pumping, and power supply connection.

[0033] The above conditions are the necessary and sufficient conditions for the field mixing operation of all excavators and loaders.

[0034] C. Material Preparation: divided into bulk materials and key materials.

[0035] Bulk materials are three: soil, cement, water.

[0036] Soil preparation: according to the size of the mixing equipment excavator, this site uses 100 cubic meters of mixed material at a time. Therefore, before the start of the project, the soil is prepared to make the soil 100 cubic meters in a conical pile state, which is placed in the mixing position.

[0037] Cement preparation, three rules must be implemented. That is, the supplier must deliver the specified amount of cement to the specified location at the specified time, which is the key to the success of the project and must be strictly implemented.

[0038] Specifically, in this project, a dump truck will dump 7.5 tons of cement plus 2 bags directly onto the soil pile at 8 a.m. on the day of construction. (Note: the excavator can first dig a large gap in the soil, and the cement will be poured into the gap.)

[0039] The second truck, 7.5 tons, will be delivered at 9:30 a.m. and poured into the second soil pile. This process will continue until the day's construction task is completed.

[0040] Water: There is a natural water channel next to the mixing site at the construction site. During preparation, the water channel must be blocked to allow water to accumulate. A basket is placed in the water, and a submersible pump with a flow rate of 3 cubic meters per hour is placed in the basket. This allows water to be pumped by pressing the switch.

[0041] Key materials, namely, enzymes. Prepare a plastic measuring cup (scale about 2000ml).

[0042] D. Machinery, tools and personal preparation:

[0043] Machinery and tools are divided into front and back. There is also a clinker transfer truck that connects the front and back (to be called temporarily at the construction site).

[0044] Back (i.e. mixing site) The scale of this project is small, and a large excavator can be used.

[0045] Tools: two large water containers, according to the site conditions, use the existing plastic empty barrels (volume one cubic) at the site. Place them at the enzyme mixing location. Two submersible pumps with a flow rate of 1.5 cubic meters per hour (with power supply, water pipe, nozzle, pipe connection). Three tines rakes; three sharp sickles.

[0046] Front field special tools: broom, gloves, mask, small ash bucket; each 3.

[0047] Workers: 4 general workers. Two will be transferred to the front field with the transfer truck when the front field operation begins.

[0048] Front yard:

[0049] Mechanical: excavator (responsible for roadbed processing, paving cement, rolling, leveling), so if there is a more skilled operator to level the operation better. A road roller (responsible for compacting the structure).

[0050] Tools: two flat spades.

[0051] Workers: 2. With the transfer truck, call from the back yard.

[0052] 2, back yard operation:

[0053] 2.1, from raw materials to raw materials:

[0054] This operation is actually a preliminary mixing of cement and soil. Generally, the whole mixing is mixed once. This process is called: from raw materials to raw materials; colloquially known as dry mixing.

[0055] It is best to operate by the largest excavator on site.

[0056] The excavator stands in the right place, and the whole mixing process basically does not need to move. The soil is mixed left and right in the excavator. Whenever you find a cement bag, cover the soil and try to break the cement bag as much as possible. So, until the whole pile is mixed. The process takes about 10-15 minutes.

[0057] 2.2, biological enzyme solution preparation:

[0058] This operation is carried out at the same time as dry mixing.

[0059] According to the test summary, 100 cubic meters of mixture requires about one ton of water.

This "one ton of water" operation data can also be calculated according to the difference between the best water content obtained by the standard impact test and the water content of the materials on site. The amount of water needed to be sprayed can also be obtained quickly through a 10 kg spray bottle test on site.

[0060] 2.3, Tairan enzyme solution spraying operation:

[0061] This operation requires the excavator to move the pile continuously and mix it. At the same time, the two water guns cooperate with the mixing of the excavator to spray Tairan enzyme solution to the pile. One is mainly responsible for spraying the old pile, and the other is mainly responsible for spraying the new pile.

[0062] The operator must be flexible and proactive. Spray evenly and try to avoid not spraying and over-spraying in some areas. If you want to temporarily stop spraying, you can bend the water pipe in your hand to achieve this. In this way, you can control the spraying time and the mixing time to be roughly the same.

[0063] Workers, holding two-tooth harrow, sickle, the garbage, large stones, organic impurities, cement bag fragments in the pile of soil, etc. are picked out. Unbroken cement bag, broken with sickle.

[0064] Operation time is about 20 minutes or so.

[0065] 2.4, two times fine mixing of the pile:

[0066] Finally, by excavator, the pile is two times high fine mixing.

[0067] At the same time, the workers continue to operate the same as before. No spray job interference, operation is relatively thorough.

[0068] This operation is: from raw material to clinker; commonly known as: wet mixing.

[0069] The requirements of this operation: uniform.

[0070] Index: soil color uniformity.

[0071] Detection method: observation.

[0072] Detection frequency: at any time.

[0073] To meet the requirements, timely and appropriate advance contact transport vehicles, clinker loading, transport yard. At the same time, the reserved one bag of cover cement and two workers, together with the front yard.

[0074] 3, the front yard operation:

[0075] 3.1, subgrade recheck and problem disposal:

[0076] All the time, for the site of abundant rainfall, subgrade water damage is difficult to avoid. To be very careful to find and correct treatment of subgrade problems.

[0077] First prepare enough dry soil suitable for subgrade treatment. By experienced management personnel, equipped with a common worker, with a spork, two-tooth harrow as a tool, guided by the operation of the road roller, and observed the reaction of the passing heavy vehicle rolling subgrade. Found the reasons for the subgrade spring, surface transverse fish scale cracks, longitudinal slurry, deep ruts and other conditions. Take appropriate treatment methods.

[0078] In the process of treatment, fill the road depression with suitable materials, and find the flat compaction.

[0079] Road construction is a covering structure, which must be properly disposed of before the clinker arrives.

[0080] Lime marks the paving width range, determines the construction of the road line type.

[0081] The qualified roadbed section is processed, and can enter the clinker paving operation.

[0082] 3.2, clinker paving:

[0083] The initial road section of the project is a large longitudinal slope, and the excavator needs to be used for paving and leveling. The chain track is used for the newly paved surface, and the repeated rolling is repeated. The above-mentioned operation is repeated until the thickness of the semi-tight paving layer after rolling reaches 25-26 cm, and the surface is flat. Pay attention to the fullness of the corner material. The width of the material is more than 40 cm.

[0084] When the excavator is paving, the workers pick out various impurities and oversized stones.

[0085] When the excavator is paving, the workers pick out various impurities and oversized stones.

[0086] 3.3, static rolling, fine leveling, and strong rolling:

[0087] The road roller is used for static rolling in the way of first two sides and then the middle. During this process, accurate leveling is accompanied, and vibration is prohibited before the leveling work is completed.

[0088] After leveling is completed, small vibration is performed once. During this operation, the workers need to sprinkle a small amount of dry cement evenly on the top of the steel wheel of the road roller. It is important to note that the amount of dry cement is small, and each time is half a handful, and the throwing method is used. Repeated operation can cause surface water imbalance and rolling wrinkles.

[0089] After small vibration is completed, three times of slow-speed strong vibration rolling is performed.

[0090] 3.4, sealing layer:

[0091] The dry cement is thinly spread for sealing to prevent the volatilization of active ingredients. The road roller is used for static rolling and polishing.

[0092] Key points: 100% coverage, the thinner the better.

[0093] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0094] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. In addition, in the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0095] It should be understood that for those skilled in the art, improvements or changes can be made according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the application.

Claims

1. A method of paving construction by field mixing with a cement as an energy agent, characterized by, It comprises the following steps: S1, job surface preparation: according to the corresponding requirements of highway grade reaching standard; S2, material preparation: selecting an area sufficient, soil and water sufficient mixing field, and preparing soil, cement and taren enzyme; S3, equipment preparation: preparing large excavators, loaders and water pumping devices used in the mixing field, and preparing transfer vehicles and road rollers used in the job surface; S4, raw material mixing: mixing cement and soil to obtain raw material; S5, taren enzyme solution preparation: dissolving taren enzyme in water according to the proportion and preparing the spraying device; S6, taren enzyme solution spraying operation: continuously moving and mixing the dry material in step S4 using the excavator, and spraying taren enzyme solution to the material pile during the mixing process to obtain clinker; S7, paving and rolling forming: transporting the clinker to the job surface using the transfer vehicle to pave and compact, and the operator goes to the job surface site with the vehicle; S8, static rolling, fine leveling and strong rolling: static rolling the paved and compacted road surface several times in the order of two sides first and then the middle, followed by accurate leveling, then small vibration, and finally three slow strong vibration rolling; S9, seal coat operation: applying dry powder cement to the completed job surface and using a road roller to static roll and polish; The mixing field in step s2 has sufficient water source that can be pumped for use, power supply that can be connected, and sufficient area for the operation of excavators and loaders; The soil preparation in step s2 is 100 cubic meters, and the 100 cubic meters of soil is stacked in a conical heap state at the mixing position; The cement in step s2 is delivered to the soil pile according to the quantity of 7.5 tons plus 2 bags on time.

2. The method of claim 1, wherein the cement is used as an energy agent. In step s5, a container with a volume of one cubic meter is used for solution preparation, and 4.2 liters of taren enzyme are added.

3. The method of claim 2, wherein the cement is used as an energy agent. Two submersible pumps with a flow rate of 1.5 cubic meters per hour are put into the solution preparation container for spraying operation, and each submersible pump is connected to a spray gun.

4. The method of claim 3, wherein the cement is used as an energy agent. In the spraying operation, two water guns cooperate with the mixing of the excavator to spray taren enzyme solution to the material pile, one mainly responsible for spraying the old pile, and the other mainly responsible for spraying the new pile.

5. The method of claim 4, wherein the cement is used as an energy agent. The sprayed material pile is finely mixed twice by the excavator, and the material pile is finely mixed twice by the excavator.

6. The method of claim 1, wherein the cement is used as an energy agent. In step s7, the thickness of the semi-tight paving layer after rolling reaches 25-26 cm, the surface is flat, and the corner material is full, and the super-wide material is more than 40 cm.

7. The method of claim 1, wherein the cement is used as an energy agent. The operation time of step s4 is 10-15 minutes, and the operation time of step s5 is 18-25 minutes.