Color permeable floor is a new environmental road paving material with a porosity of 15-25%. The strength of the permeable concrete floor of Jijing Ecology can reach C30, which can meet the load carrying requirements of most roads such as commercial square, municipal road and garden landscape. In order to develop sponge cities, improve urban ecological environment and improve people's quality of life, pervious concrete pavement will become a trend, especially color pervious concrete.

Main advantages of color permeable floor:

1. Collect rainwater to infiltrate into the earth's surface, replenish groundwater, and alleviate the urban ecological problem of rapid decline of groundwater level.

2, with a wealth of color collocation scheme, the owner of all kinds of preferences to pursue, to achieve personalized words of decoration creative requirements.

3. Increase the urban breathable area, adjust the urban climate and surface temperature, which is beneficial to alleviate the urban "heat island effect";

4. Absorb some noise from shopping malls to create a quiet and comfortable business environment.

5. Prevent road surface water and reflective road surface at night on rainy days to improve the comfort and safety of vehicles and pedestrians;

6. Easier to maintain than ordinary concrete; Compared with permeable brick, it has good integrity, smooth road surface and strong compressive resistance.

Over the past 40 years of reform and opening up, China has witnessed rapid development, accelerated urbanization and increasingly improved infrastructure. Therefore, urban hardiness is now gradually emerging, which reduces the self-regulation ability of urban ecological environment. When it comes to the plum rain season and the rainstorm weather in summer, the urban roads and old residential areas are flooded, which affects the living environment of urban residents.

Sponge city construction is mainly divided into large modules to improve rainwater collection and development systems, permeable roads and rainwater gardens. Urban "spongiform" includes not only river, lake, pond and other water systems, but also urban supporting facilities such as green space, garden and permeable road, so as to realize the rapid discharge and terminal collection of rainwater.

In order to alleviate urban waterlogging, sponge city construction concept was put forward in 2012. In 2015, pilot sponge city construction planning was officially launched, and a large number of cities in China began to issue sponge city construction measures successively. So far, more than 300 cities have started sponge city construction projects.

Scope of application

Municipal footpath, garden path, city square, upscale residential area, parking lot, business office building, outdoor sports place, bicycle path, children playground ground (badminton stadium, basketball stadium, etc.).

Construction process flow

Formwork -- stirring -- transportation -- paving, pouring -- curing -- coating with transparent sealant

Construction: The construction of pervious concrete mainly includes paving, forming, surface treatment, joint treatment and other procedures. It can be spread mechanically or manually; The forming can be carried out by plate vibrator, vibration leveling roller, manual push-pull roller, vibration leveling beam, etc. The main purpose of surface treatment is to improve the appearance of the surface and to repair or clean the surface of the formed pervious concrete. Joints of pervious concrete pavement are basically the same as those of ordinary concrete. Shrinkage joints are equispaced and the spacing should not exceed 6m.

Maintenance: After the construction of pervious concrete, it shall be covered for curing and moistened with water for at least 7 days. During the curing period, the surface pores of concrete shall be prevented from being polluted by sand and silt. Daily maintenance of concrete includes daily cleaning and clearing of blocked pores. The cleaning and sealing of the pores can be done by fan cleaning, high pressure washing or vacuum cleaning.

Notes:

1. Feeding shall be carried out in strict accordance with the ratio, and special person shall be responsible for weighing materials

2. The water-cement ratio, namely the amount of water added, should be strictly controlled, and added in 2-3 times with about 60S for each stirring. One-time addition is prohibited

3. The optimum temperature for construction is 15-25℃. It is not suitable for construction if the temperature is lower than 5℃ and higher than 35℃.

4, summer construction, especially through the concrete mixing station transport, need to use moisture pervious concrete reinforcer, can delay the setting speed, prevent high temperature moisture evaporation too fast.

5. Pervious concrete sets quickly, so it must be spread in a timely manner, with the coefficient of loosening between 1.1 and 1.15.

6, leveling use scraper, vibrating screen to use low-frequency vibrating screen, high frequency easy to squeeze into solidified concrete, reduce the porosity of concrete, finally with a float to fill leveling, no open water.