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08

2022-12

Colored Permeable Concrete Construction Plan

1. 1. 6-8mm Selected Quartz Aggregate Natural quartz aggregates are sourced from quartz mines, where the surface dirt is first thoroughly washed away. After drying, they are screened through a 6- to 8-mm sieve to separate the 6- to 8-mm quartz aggregate, which is then packaged. This aggregate mixture consists of approximately 40% 5- to 6-mm particles and 60% 6- to 8-mm particles. 2. Colorful Permeable Pavement Strengthening Material This material is a blend composed of domestically produced, inspection-free high-grade silicate cement, imported colored pigments, and other proprietary admixtures. To ensure consistent quality and optimal compressive strength of the colorful permeable pavement, this strengthening material must be manufactured at the Qingqinyu Factory. Each package weighs 25 kilograms. - A-4 Surface Sealer The surface sealer is a transparent, matte liquid formulated from imported resin copolymers. After applying a single coat onto the finished surface of the colorful permeable pavement, it forms a clear, protective film that effectively prevents automotive oil stains from penetrating the surface. III. Performance Characteristics of Colorful Permeable Pavement Materials According to testing conducted by the Guangdong Provincial Electric Power Engineering Quality Supervision and Civil Construction Testing Station, the results are as follows: 1) The measured compressive strength of the colorful permeable pavement after 28 days is 31.4 MPa. 2) The measured flexural strength of the colorful permeable pavement after 28 days is 4.5 MPa. 3) The permeability coefficient of the colorful permeable pavement is 300 liters/hour per square meter. IV. Substrate Requirements (1) As per design specifications, the colorful permeable concrete pavement is constructed directly on the existing structural layer. To ensure strong adhesion between the permeable concrete and the substrate, preventing any potential delamination or hollowing between the two layers. (2) The compressive strength grade of the concrete structural layer must meet or exceed C20. The surface should be rough, clean, and adequately moistened, with a minimum thickness of 100 mm. (3) If the substrate itself is a concrete structure, an interfacial treatment must be applied prior to laying the permeable concrete surface layer. (4) The substrate design must incorporate effective drainage solutions, utilizing permeable drainage pipes that connect seamlessly to the municipal drainage system integrated into the overall road design. www.micefloor.com | Tel: 020-38989165 / 152 | Fax: 020-38989166 | Qingqinyu Environmental Technology Co., Ltd., Guangzhou 2 Permeable Concrete Specifications Requirements for the Subbase Layer of Permeable Concrete Pavements 1. Thickness of Permeable Concrete Pavements: Given the strength characteristics of colorful permeable concrete, these pavements are typically used in pedestrian walkways, plazas, parking lots, garden paths, and residential community roads. The required thickness varies depending on the specific application area. For light-load surfaces such as sidewalks and bike paths, the standard thickness of permeable concrete is generally no less than 8 cm. In contrast, for areas subjected to heavier loads—such as parking lots and plazas—the recommended thickness should be at least 10 cm. 2. To guarantee that the pavement structure maintains sufficient overall strength and permeability, a permeable subbase layer along with an appropriately water-retentive cushion layer must be installed beneath the surface layer. The subbase material, when laid over a compacted native soil layer, should not only possess adequate strength but also exhibit excellent permeability. Recommended materials include graded gravel or graded crushed stone. When using graded crushed stone, the maximum particle size should be less than 0.7 times the subbase thickness, with a maximum dimension not exceeding 50 mm. As for the cushion layer, natural crushed stone with particle sizes smaller than 10 mm—commonly referred to as "guazi pian" (melon seed chips")—is typically employed. This cushion layer should be evenly spread and leveled to a thickness ranging from 15 cm to 30 cm. V. Installation Process for Colorful Permeable Concrete The standard base thickness for pedestrian walkways is typically set at 8 cm. However, based on the intended function of the pavement, different thicknesses may be designed accordingly. The general construction process is outlined below: Gravel Requirements: Gravel particles must meet specific size criteria, categorized into three grades—No. 1, No. 2, and No. 3—based on their particle size ranges. Detailed particle size specifications can be found in Table 1, while the physical performance indicators for each gravel grade are listed in Table 2. www.micefloor.com | Tel: 020-38989165 / 152 | Fax: 020-38989166 | Qingqinyu Environmental Technology Co., Ltd., Guangzhou 3 V. Preparatory Work Before Construction 1. The construction contractor shall, based on the design documents and site conditions, finalize the construction plan and prepare a detailed construction organization design. 2. Construction personnel must conduct a thorough on-site inspection to verify the location and elevation of all underground utilities, ensuring accurate planning and deployment. 3. Prior to commencement of work, temporary facilities such as water and electricity supply systems, access roads, mixing and storage areas, site offices, warehouses, and fire safety equipment must be established. Additionally, the construction site should have a dedicated, weatherproof area for storing materials, with each type clearly labeled. During loading, unloading, and transportation, materials must be handled carefully to avoid random dropping or scattering. 4. The construction site must implement robust quality control, safety, and environmental management protocols, assigning specific personnel responsible for dynamic oversight and enforcement. 5. Cement used for the permeable subbase layer must undergo rigorous re-inspection according to relevant regulations to confirm its strength and safety standards. The use of cement with unstable properties is strictly prohibited. Mixing different types of cement during construction is also strictly forbidden. 6. Permeable concrete must be mixed on-site using a dedicated concrete mixer, accompanied by all necessary auxiliary equipment, supplementary materials, construction tools, and comprehensive safety measures. 7. During subbase construction, drainage pipes should be promptly installed as per specified requirements. 8. Throughout the construction process, special attention must be paid to environmental protection measures.

2022-12-08

08

2022-12

Magnetic polishing machine breaks through the traditional concept of surface treatment, grinding and polishing

The invention of the magnetic polishing machine breaks through the traditional concept of surface treatment, grinding and polishing. It adopts a new type of magnetic force grinding principle. It uses the magnetic force set by the machine to promote the high-speed rotation of the stainless steel needle in the grinding container. The magnetic field in the polishing container is evenly distributed, so that the stainless steel needle and the workpiece produce rapid rotation in the grinding and polishing container. This magnetic force makes the stainless steel produce intense rolling friction against the workpiece, so as to achieve the workpiece surface deburring, polishing, cleaning and other multiple effects. Magnetic polishing machine on the surface of the product polishing can not be a single for the unique workpiece polishing treatment, the material of various workpieces are different, in order to adapt to the surface polishing of various products required, surface polishing machine polishing function in constantly to a higher level of improvement and development. From the vibration grinding and polishing machine, barrel grinding and polishing machine, centrifugal grinding and polishing machine, eddy current grinding and polishing machine and other grinding and polishing equipment that use various polishing and polishing materials such as grinding and polishing abrasive, polishing liquid, grinding and polishing agent, and cleaning agent to grind and polish the surface of the workpiece, it has now developed into a magnetic grinding and polishing machine that can treat the surface of the workpiece only by grinding steel needles and grinding aids, for the surface treatment of the workpiece, there has been a lot of cost savings and much simpler operation. The smooth effect of the product surface after the magnetic polishing machine has reached or exceeded the domestic similar products. The machine in the grinding and polishing machine has a very high cost performance, magnetic polishing machine is the emerging in the field of domestic surface polishing grinding and polishing machine, magnetic grinding and polishing machine on the surface of the workpiece polishing quality, can completely replace similar products imported from foreign countries, magnetic grinding and polishing machine is the enterprise to save labor costs, improve work efficiency of the ideal grinding and polishing machine. When we use vibration grinding and polishing machine, roller grinding and polishing machine, centrifugal grinding and polishing machine, eddy current grinding and polishing machine and other grinding and polishing machines to grind and polish the workpiece, we must use various polishing and grinding materials such as polishing grinding liquid, grinding brightener, cleaning agent and so on, so as to achieve a complete processing sequence for the surface treatment of the workpiece. However, magnetic grinding and polishing machine does not need to use this and complicated materials, just grinding steel needles and grinding aids have to complete its surface polishing tasks. The invention of the magnetic grinding and polishing machine is a summary of a large number of practical experience in the production of grinding and polishing. Through a large number of research and careful design, it has finally successfully achieved a simple, practical, convenient and safe novel grinding and polishing machine that integrates deburring, de-oxidation layer and fine polishing. The magnetic grinding and polishing machine can automatically adjust the polishing sequence of the machine in the process of grinding and polishing the workpiece, and in order to achieve the complete and uniform polishing of each surface of the workpiece, the magnetic field drag force in the polishing container can be automatically adjusted smoothly and reversely, so as to make the grinding and polishing strength of each section of the workpiece more uniform and make the surface of each surface of the workpiece more smooth.

2022-12-08

08

2022-12

Environmental protection equipment manufacturing industry is an important part of energy saving and environmental protection industry

Environmental protection equipment manufacturing industry is an important part of energy-saving and environmental protection industry, and it is an industry that provides technical and material basis for environmental protection. The development of environmental protection equipment manufacturing industry is an important measure to prevent environmental pollution and promote the green development of industry. The Fifth Plenary Session of the 18th CPC Central Committee put forward the development concept of innovation, coordination, green, open and sharing, and positioned green development as one of the five development concepts, which provided new opportunities for the development of China's environmental protection equipment manufacturing industry. At present and for a period of time in the future, with the improvement of environmental quality as the core, the implementation of strict environmental protection system will bring huge market space for the development of environmental protection equipment manufacturing industry. The development and expansion of the green manufacturing industry and the cultivation of new economic growth points have put forward new and higher requirements for the environmental protection equipment manufacturing industry. From the perspective of the industry's own development, the current environmental protection equipment manufacturing industry is transitioning from high-speed growth to a new stage of sustained and stable growth. The traditional field market is becoming saturated, and the emerging field market is gradually expanding. However, at present, the innovation ability of the environmental protection equipment manufacturing industry is not strong, the low-end homogenization competition of products is serious, and the difficulties in the application and promotion of advanced technology and equipment are still prominent, and there is still a big gap with the current requirements of green development. Implement the "Made in China 2025" and the "Thirteenth Five-Year" National Strategic Emerging Industry Development Plan, comprehensively promote green manufacturing, closely focus on the goals and tasks of green development, and accelerate the sustainable and healthy development of the environmental protection equipment manufacturing industry. Supply-side structural reforms, effective supply of advanced environmental protection equipment, and promotion of green development are of great significance. Article Link: Environmental Protection Online

2022-12-08

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