Neoprene The neoprene rod is a material used for seepage prevention and water stop of concrete face dam. It is also called caulking rubber rod and neoprene water stop rod because its function is caulking and water stop. Neoprene rod is mainly made of neoprene and mixed with various synthetic rubber As the main raw material, mixed with various auxiliary And filler, which is molded, mixed and extruded cylinder - shaped waterstop material.
Performance characteristics of neoprene rod:
The raw material of the neoprene rod is neoprene, with a rubber content of about 80%, and the remaining 20% is an auxiliary agent to change the performance. Therefore, the neoprene rod has the properties of neoprene, such as flexibility, oil resistance, heat resistance, aging resistance, wear resistance, corrosion resistance, etc.
Application range of neoprene rod:
Neoprene rods are commonly used for seepage prevention and water stop at toe boards, peripheral joints, vertical joints, wave walls and other places where leakage may occur in face dams. Generally, neoprene rod for support is set at the seam. The neoprene rod can be kept at the seam during water stop operation and will not be pressed into the seam to play a supporting role. The neoprene rod is only one of the anti-seepage series materials for face rockfill dams. It is often associated with plasticity filler The anti-seepage protection cover shall be used together.
Waterproof and thermal insulation coating has excellent waterproof and thermal insulation performance, which can effectively protect buildings and improve people's life quality.
This paper briefly introduces the characteristics, application fields and future development prospects of waterproof and thermal insulation coatings.
1、 Features of waterproof and thermal insulation coating 1. Waterproof performance: waterproof and thermal insulation coating has excellent waterproof performance, can effectively resist external water erosion, and protect buildings from water damage.
Its unique film forming technology enables the coating to form a dense waterproof barrier on the wall, effectively preventing moisture penetration.
2. Thermal insulation performance: waterproof and thermal insulation coating has good thermal insulation performance, which can reduce energy consumption of buildings and improve living comfort.
Its unique thermal resistance material can effectively block external heat transfer and reduce indoor temperature fluctuations.
3. Environmental protection and safety: waterproof and thermal insulation coating is made of environmental protection materials, non-toxic and harmless, and meets environmental requirements.
During construction, no harmful substances will be produced, which is harmless to human health.
2、 Application field of waterproof and thermal insulation coatings 1. Residential buildings: waterproof and thermal insulation coatings are widely used in the internal and external walls, roofs and other parts of residential buildings.
Its excellent waterproof and thermal insulation performance can effectively protect buildings and improve the living quality.
2. Commercial buildings: commercial buildings also have a great demand for waterproof and thermal insulation coatings.
Commercial buildings usually have complex structures and appearances. Waterproof and thermal insulation coatings can provide good protection and extend the service life of buildings.
3. Industrial buildings: due to the long-term impact of environmental erosion and equipment operation on industrial buildings, the demand for waterproof and thermal insulation coatings is particularly urgent.
The use of waterproof and thermal insulation coatings can effectively protect the walls and roofs of industrial buildings and reduce maintenance costs.
3、 Future development prospects of waterproof and thermal insulation coatings 1. Technological innovation: With the continuous progress of science and technology, waterproof and thermal insulation coatings will make greater breakthroughs in technological innovation.
For example, research and development of new coatings with higher waterproof and thermal insulation performance, and more environmentally friendly and energy-saving construction technology.
2. Market expansion: With the continuous improvement of people's requirements for quality of life, the market demand for waterproof and thermal insulation coatings will continue to grow.
With the promotion of green buildings and energy-saving buildings, the application of waterproof and thermal insulation coatings in the field of green buildings will also be expanded.
3. Industrial upgrading: The waterproof and thermal insulation coating industry will accelerate the pace of industrial upgrading and improve product quality and technical level.
Strengthen industry self-discipline, promote the healthy development of the industry, and contribute to the sustainable development of the construction industry.
As an important part of building materials, waterproof and thermal insulation coatings have a wide range of applications and good prospects for development.
With the progress of science and technology and the expansion of the market, waterproof and thermal insulation coatings will play a greater role in protecting buildings and improving the quality of life.
Plastic surface is a kind of ground material commonly used in sports venues, schools, kindergartens and other places. It has the advantages of good elasticity, wear resistance, impact resistance, easy cleaning and maintenance. The following are the technical points of the plastic surface construction:
1、 Base course preparation
1. Base course inspection: ensure that the base course is solid, flat, clean and free of oil stains, loose substances and ponding.
2. Base course treatment: grind, clean and flush the base course, and carry out alkali cleaning or acid cleaning if necessary to improve the adhesion with the plastic surface course.
3. Leveling course construction: for uneven base course, cement mortar or asphalt concrete shall be used for leveling.
4. Drainage slope: ensure that the base course has a good drainage slope to prevent ponding.
2、 Material preparation
1. Plastic particles: select appropriate plastic particles, and determine the color and particle size according to the design requirements.
2. Adhesive: prepare special adhesive for plastic surface, usually polyurethane or epoxy resin.
3. Pigment: prepare corresponding pigments if on-site color matching is required.
3、 Construction process
1. Priming construction:
-Apply a layer of primer evenly on the treated base course to enhance the bonding force between the base course and the plastic surface course.
-The next process can be started only after the primer is dry.
2. Laying plastic particles:
-Apply the adhesive evenly on the base course, then sprinkle the plastic particles, and use the scraper or tooth harrow to evenly distribute them.
-According to the design requirements, plastic particles of different colors and sizes can be laid to form patterns or partitions.
3. Rolling and troweling:
-Use a special rolling machine to roll the laid plastic particle layer to fully combine it with the adhesive.
-The surface shall be trowelled to ensure the flatness and thickness are consistent.
4. Surface construction:
-After the plastic particle layer is solidified, the surface layer is usually a transparent polyurethane coating or other protective layer.
-The construction of surface course shall be even without missing coating, sagging and other phenomena.
4、 Construction requirements
1. Environmental conditions: During construction, the ambient temperature and humidity shall meet the requirements of the material supplier. Generally, the temperature is between 10 ℃ and 30 ℃, and the relative humidity is not higher than 85%.
2. Construction time: the time from the primer to the completion of the surface construction shall be controlled within the specified time to avoid the material curing in advance.
3. Construction thickness: the construction thickness of the plastic surface is generally 5-10mm, depending on the design requirements and use.
5、 Key points of quality control
1. Before laying the bottom plastic, the base course must be cleaned to remove the surface float and dirt, repair the defects of the base course, and lay the bottom plastic after the base course is completely dry.
2. The machine must travel at a uniform speed during the laying of bottom glue. Starting from one side of the site, the glue shall be scraped at one time according to the width of the plate. The trimming personnel shall timely repair the exposed bottom and concave parts, and scrape the raised parts.
3. After finishing the bottom glue, water testing and leveling must be carried out. If there is ponding, surface materials and methods shall be used to repair it until there is no ponding.
4. The modified asphalt concrete shall be paved in full width as far as possible. If paving in pieces, the joint shall be tight and straight.
5. The rolling compaction of modified asphalt concrete is divided into initial compaction, re compaction and final compaction. During rolling, the uneven parts shall be timely repaired.
6. The ingredients of the surface plastic shall be fed according to the material ratio and fully stirred evenly. The operation of each barrel of glue solution shall be as short as possible to ensure that the glue forming speed of the surface plastic is uniform.
7. Surface flatness [0,2] mm; The seam is straight [0,2] mm.
6、 Curing and use
1. Curing period: After the construction is completed, a certain curing time is required, usually 24-48 hours, to ensure that the materials are completely cured.
2. Service time: After the curing period, the ground can be put into use, but the heavy load and scratches of sharp objects should be avoided in a short period of time.
3. Maintenance: regularly clean and check the plastic surface, and timely deal with wear, cracking and other problems.
The construction technology of plastic surface course is strict, and the construction quality of each step directly affects the final use effect and life. Therefore, the construction shall be carried out in strict accordance with the construction guidelines and design requirements provided by the manufacturer.
