Considering the cost, the surface layer can be divided into two layers, that is, the surface layer is a color permeable concrete layer, the thickness is generally not less than 3cm, and the lower layer is a plain color permeable concrete layer.
All curing periods shall not be less than 7 days to gradually improve the strength during the curing period.
2.
After the concrete is compacted, the surface of the water concrete shall be the same as that of the permeable concrete.
2.
For local defects without light, repair with a manual spatula, and keep the joint surface flat when leveling.
After curing the joint concrete for 14 days, the cutting machine shall be used for cutting construction, and asphalt shall be used as the caulking material after cutting.
In order to prevent the concrete from bonding to the construction site, the protective plate shall be taken at the lower part of the mixer.
5.
For light load ground such as sidewalk and bicycle lane, the thickness of surface layer is generally not less than 8cm; For the loading ground such as parking lot and square, the thickness of surface layer shall not be less than 10cm.
Requirements for permeable concrete pavement base course of color permeable concrete floor 1.
Organizational preparation.
4.
Thickness of permeable concrete pavement: due to the strength of color permeable concrete, it is mainly used in sidewalk, square, parking lot, garden path and other places.
It is paved with a certain thickness and is even and flat.
The best setting scheme of the mixer is the middle part of the construction site.
When grade gravel is used, the large particle size of gravel shall be less than 0.7 times and not more than 50 times mm.
After the concrete on the surface protection surface has dried for about 3 days, the transparent sealing agent shall be sprayed to prevent the pore pollution of the colored pervious concrete, block the pore, and enhance the impact resistance and decoration of the pervious concrete surface.
The urban land area is becoming smaller and smaller.
The garden road construction shall comprehensively consider the influence of drainage slope, construction technology, appearance, flatness, compactness of each structural layer, normal water level of rivers around the project, especially the buried depth of communication optical cables and gas pipelines on the project.
The curing color pervious concrete floor is similar to the ordinary concrete floor.
Matters needing attention at the construction site 1.
The construction technology of color permeable concrete floor color permeable concrete 1.
Material preparation: the construction of pervious concrete is basically similar to that of cement concrete, with only sand as the raw material, and a certain amount of materials (bonding materials, high materials) in the construction.
3.
Paving color permeable concrete is a dry concrete material with fast initial setting speed and must be paved in time.
Requirements for base course: on the compacted layer of ordinary soil layer, the base course material shall have appropriate strength and must have good water permeability.
Construction electricity: three-phase electricity, construction water: ordinary tap water is connected to the mixing equipment.
Therefore, what should we pay attention to in the construction steps of colored pervious concrete floor? Preparations before construction of color permeable concrete floor 1.
Necessary tools such as construction machinery, trolleys, ceramic tile tools, formwork timber or profile steel; Water and electricity facilities are in place, including domestic water, electricity, construction water and electricity.
Rich colors and integration with nature make urban environment construction more harmonious.
During the construction of greenway, the pipeline shall be planned, designed and constructed at the same time to avoid future secondary excavation and waste of financial and material resources..
Cooperate with the foundation construction team to lay special permeable pipes.
4.
It is wrapped with a layer of grout on the surface of coarse aggregate and bonded into a honeycomb, which can make rainwater flow into the ground and effectively supplement the ground water.
Graded gravel or graded gravel shall be used.
6.
On the site where mixing machinery is set, small horizontal mixers are used to mix pervious concrete.
The natural gravel is usually used as the cushion, with the particle size less than 10mm, commonly known as melon seed slice.
In order to ensure that the road structure layer has sufficient overall strength and water permeability, there should be a permeable base course and a cushion with good water retention under the surface layer.
Before spraying, the surface of pervious concrete must be dry.
The thickness of the panel varies with the pavement.
3.
If there are parts that are not dried locally, the protective agent shall not be sprayed to avoid uniform spraying effect.
In addition to the requirements of the drawings, they must be connected with the original road drainage system and become a part of the road drainage system.
3.
5.
Watering curing can also be adopted.
Use a ruler to find the flatness, control a certain degree of flashing, pave manually and evenly as far as possible, and then select a roller to roll.
For large area construction, materials shall be paved in blocks.
After the first rolling, the filler with obvious depression shall be replaced manually and then rolled.
When the temperature is high, in order to reduce the evaporation of water, the plastic film shall be used for maintenance, and the maintenance time shall not be less than 14 days to keep the water.
The materials shall be prepared on site, such as personnel accommodation, water and electricity supply, engineering materials storage shed (waterproof measures must be taken for cementitious materials), mixing machinery setting site, etc.
It is also becoming more and more popular because of its environmental protection, pervious, and decoration.
The leveling of colored pervious concrete requires high flatness.
Colored pervious concrete floor is a kind of floor material.
Preparations before construction: three major preparations including organization, materials and technology shall be made before construction.
As pervious concrete is dry concrete, the initial setting speed is fast, and the transportation time should be as short as possible.
2.
Colored pervious concrete can also be called porous concrete, which is mainly made of crushed stone, cement, polymer glue, pigment, protective agent and other materials.
Considering the factors of rainstorm season, in order to prevent excessive water accumulation in the base course from affecting the base course, a special pervious pipe drainage system is set at the base course, leading to the roadside drainage system to eliminate excessive rainwater.
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, reasonably arrange the construction force, formulate the construction plan, and make technical preparation for the smooth completion of the project.
2.
