Chengdu Huayang Wenjiang Jintang Shuangliu Qingbaijiang Longquan Colored Anti-Slip Permeable Asphalt Pavement Road Construction

Chengdu, Huayang, Wenjiang, Jintang, Shuangliu, Pixian, Qingbaijiang, Longquanyi, Xindu, Guanghan Shifang Mianzhu Dayi, Pujiang, Xinjin, Dujiangyan, Pengzhou, Chongzhou, Qionglai and other places have long-term professional undertaking of various bus station highway anti-impact projects Pulleys to sidewalks, garden landscape roads, municipal roads, etc. Hot mix and colored anti-skid pavement construction, colored permeable concrete pavement construction Contact number: Liang Hot mix and colored anti-skid pavement construction Colored permeable concrete pavement construction project Contact number: Liang Applications in other places can effectively beautify the environment and divide traffic sections. Welcome to call: Liang 1. Mixing of hot-mixed colored asphalt concrete
. The mixing method and technical requirements of hot-mixed colored asphalt concrete are different from ordinary asphalt. Concrete is basically the same.
Before producing colored asphalt concrete, the mixing tank should be cleaned and the cement conveying pipeline should be set up separately to prevent contamination of the original black asphalt.
In order not to affect the quality of bright asphalt, before construction and mixing, the storage temperature should be controlled at -℃ when the storage days are less than 3 days. When the storage days are greater than 3 days, the storage temperature should be controlled at -℃ or at room temperature. Cool and harden the cement to When reheating with a burner at room temperature, in order to prevent the cement from being locally heated until half of the stored cement is dissolved, please use interval heating. (For example: heating up in hours and extinguishing fire in hours).
The construction temperature of colored asphalt binder should be determined by measuring the viscosity-temperature curve under ℃ and ℃ conditions. When there is a lack of viscosity-temperature curve data, you can refer to the following range for selection: -Ⅰ Colored asphalt binder heating temperature ~ ℃ stone heating temperature ~ ℃ mixing temperature ~ ℃ discharging temperature ~ ℃ paving temperature should not be lower than ℃ initial pressing temperature ~ ℃ rolling The final temperature shall not be lower than ℃. - Heating temperature of colored asphalt binder ~ ℃ stone heating temperature ~ ℃ mixing temperature ~ ℃ discharging temperature ~ ℃ paving temperature should not be lower than ℃ initial pressing temperature ~ ℃ final rolling temperature should not be lower than ℃.
In order to make the pigment distribution uniform, the mixing time should be reasonably determined. The mixing time is generally longer than that of ordinary asphalt concrete.
Strictly control the mixing temperature and mixing time. The difference in mixing temperature of each plate of materials is less than ℃, and the difference in mixing time is less than 0.
2. Colored anti-skid pavement construction
The construction of this material relies entirely on labor, so the construction cost is relatively expensive. The selling point of colored anti-skid pavement construction is that it is simple to operate and does not require as large a mechanical arrangement as hot patching. It also has relatively relaxed environmental requirements and traffic control surface treatment. First, draw a cordon to enclose the area that needs to be repaired, then clean the road surface to remove all foreign debris (soil, gravel, sand, etc.), sweep it with a broom, and then use a hair dryer to blow away the floating dust, sand, etc. After the road surface is completely dry, spray color Asphalt mixture
After cleaning, if you want to retain the original markings according to the owner's requirements, use tape of a specific size to protect the markings, arrows, text, etc. In order to protect the roadside stones from being polluted, clean and green them. It is necessary to use a baffle to cover the edge of the spray boom to prevent contamination caused by fine mist sprayed under strong pressure.
Use an artificially adjustable speed motor and a stirring blade to stir each barrel of asphalt emulsion, stir it evenly, and then add emery at a constant speed. According to different road conditions, the proportion of sand can range from a minimum of no sand to a maximum of % of emery (place at room temperature - no more than one kilogram in a paper cup). After adding, set the mixing speed to the fastest setting and keep stirring at high speed for 10 minutes to allow the mixture to be thoroughly mixed. The asphalt emulsion fully covers every grain of silica sand
. There are two methods of construction:
Direct spraying by machine (putting in curing agent), (recommended for heavy traffic)
Manual pushing and scraping method (putting in curing agent) Curing agent and emery), (recommended for light traffic such as sidewalks, bicycle lanes, etc.)
Direct spraying by machine: Add the mixture to the spraying equipment container at room temperature and flow it through the pipe into the spray gun and spray directly and evenly< br/>. After spraying or scraping, be sure to remove the tape quickly to avoid sticking to the road surface.
Traffic can be opened to traffic within hours after the construction is completed.
Three: Colored permeable concrete construction technology
Generally press As a standard, it serves as the baseline thickness of the sidewalk. On this basis, different thicknesses are designed according to different functions. A layered design can be used to reduce costs. The key construction technology for constructing the above-mentioned single-layer or layered permeable concrete pavement is the guarantee of the quality of permeable concrete pavement. Biaomei Caishi provides the following construction plans.
. Preparation before construction: Three major preparations, including organization, material and technology, should be made before construction.
.Organizational preparation: Establish a sound construction project organization structure and set up personnel based on the principle of being able to achieve the tasks required by the construction project. Personnel allocation should be strictly controlled and strive to use one specialist for multiple tasks and one person for multiple positions.
.Material preparation: The construction of permeable concrete is essentially similar to the construction of cement concrete. The raw materials only lack sand and high-quality gravel of a certain particle size replaces the aggregate. There is a certain amount of materials (cementing material, high-quality gravel) in the construction. material).
Material preparation should be on-site preparation, such as accommodation of personnel, required water and electricity supply, shed for stacking engineering materials (the shed for cementing material must have waterproof measures), setting up site for mixing machinery, etc. A series of preparations Work.
A small horizontal mixer is used to mix permeable concrete at the installation site of the mixing machinery. The best setting plan for the mixer is in the middle section of the construction site. Since permeable concrete is dry material and its initial setting is fast, the transportation time should be as short as possible to ensure that the transportation time is as short as possible. In order to prevent concrete from sticking to dirt, a certain range of the lower part of the mixer in the construction site needs to be fortified with protective boards.
. Construction machinery, carts, bricklaying tools and other necessary tools, wood or steel for molding, etc. are equipped with water and electricity facilities in place. Domestic water and electricity as well as construction water and electricity. Construction electricity: three-phase electricity. Construction water: ordinary tap water connected to the mixing equipment.
D. Technical preparation before construction: Understand and analyze the characteristics and progress requirements of the project. Understand the objective conditions of the construction. Be familiar with the design drawings and rationally arrange the construction forces according to the design requirements. Formulate the construction plan and make technical preparations for the successful completion of the project. Work.
. Cooperate with the civil engineering team doing the foundation work to lay the special permeable pipes while doing the ground base. In addition to being laid according to the requirements of the drawing, the permeable pipes must be connected to the original road drainage system and become part of the road drainage system.
.Construction: Only after sufficient preparations have been made, personnel and equipment can enter the site for construction.
. Formwork erection:
Constructors must first carry out separate formwork and regional formwork work according to the design requirements. When erecting the formwork, they must pay attention to issues such as height, verticality, flooding slope, etc.
. Mixing:
Mixer: Configure mechanical mixers with different capacities according to the size of the project. The ground within a certain range of the mechanical mixer should be equipped with material receiving equipment (such as squares) to prevent water and materials from scattering. Profile type bucket) protects the hygiene of the construction environment and reduces the clean-up work after construction.
Permeable concrete cannot be mixed manually. Use ordinary concrete mixing machinery for mixing. When mixing, put the materials into the mixer according to the specified proportion and feeding order of the materials. First, stir the cementitious material and gravel for about a second, then allow them to be preliminarily mixed, and then add the specified amount. Add water one at a time and continue stirring for about 1 minute. Depending on the uniformity of the mixing, the mechanical stirring time can be appropriately extended, but it should not be stirred for too long.
Notes:
A dedicated person must be responsible for the proportion of materials at the construction site.
Strictly control the water-cement ratio, that is, control the amount of water added. Water is added in batches during stirring and is not allowed to be added in one go.
In order to mix the materials evenly, the mechanical stirring time should be appropriately extended but should not be too long.
.Transportation
Permeable concrete is a dry concrete material and its initial setting is fast. The transportation time of the mixture is generally controlled according to climate conditions. Transportation is generally controlled within minutes. Do not stop during transportation. The trolley must be stable.
D. Paving and pouring:
Permeable concrete is a dry concrete material and must be paved in time for its initial setting. For large-area construction of sidewalks, materials are paved in blocks and compartments. The loose paving coefficient is. Spread the mixture evenly on the work surface, use a ruler to check the flatness and control a certain degree of flooding, and use a flat vibrator (use a flat vibrator if the thickness is thick) or manually tamp. High-frequency vibrators should not be used for tamping. Finally, smooth it out with smoothing. There should be no exposed water when applying.
Notes:
The loose paving coefficient is the ratio of the material paving height higher than the actual height. According to the dry humidity of permeable concrete, it is generally between .-.
The vibration time of the flat vibrator should not be too long to prevent segregation from being too dense.
When paving, try to be quick and correct.
Because permeable concrete has large porosity and loses water quickly, when the temperature is higher than ℃, the construction time should be avoided at noon and construction should be carried out in the morning and evening.
.Health care:
Permeable concrete has similar properties to cement concrete, so after paving, it is inspected that the elevation and flatness meet the requirements. When the temperature is high, in order to reduce the evaporation of water, it is advisable to cover it immediately with plastic film to retain moisture. You can also use watering for curing and the curing period should not be less than d so that the strength gradually increases during the curing period.
Sprinkling and curing of permeable concrete begins the day after pouring. When the temperature is high, curing begins after an hour. However, it is not advisable to use pressure water to directly shower the concrete surface when pouring water. Water should be sprayed directly from top to bottom. The wet curing time of permeable concrete should not be less than 3 days.
The curing time should be determined according to the construction temperature. Generally, the curing period is no less than 10 days when the temperature is high, and no less than 10 days when the temperature is low.
. Apply transparent sealer:
After the surface concrete is molded and dry, apply transparent sealer in about a day to enhance durability and aesthetics. Prevent the pores of permeable concrete from being contaminated and blocked over time