What are the main building waterproofing methods and materials?

Waterproofing membrane refers to the use of special paper tires or other fiber paper tires and textiles, soaked with petroleum asphalt, coal pitch and polymer modified asphalt made, or synthetic polymer materials as the base material added additives and fillers through a variety of processes to process the long, sheet-like, roll-** and waterproof products. Waterproofing membranes are mainly divided into: asphalt waterproofing membranes, polymer modified asphalt waterproofing membranes, and synthetic polymer waterproofing membranes.

There are many varieties of various materials in each series. Waterproofing membrane is in a dominant position in the application of building waterproof materials, plays an important role in the practice of building waterproofing engineering, and is a wide range of waterproof materials. So here is a special introduction to the above waterproofing membranes:

Asphalt waterproofing membrane is a sheet waterproof material made of various asphalt as the base material, base paper, fiber cloth, etc. as the tire base, and the surface is applied with isolation materials. Among them, the most representative is the paper tire asphalt waterproofing membrane, referred to as linoleum or linoleum. However, due to the low temperature flexibility, strong temperature sensitivity and poor atmospheric resistance of asphalt materials, it belongs to low-grade waterproofing membranes;

Modified asphalt waterproofing membrane is to add appropriate polymer modifier to asphalt, which can improve the above shortcomings of traditional asphalt, polymer modified asphalt waterproofing membrane has the advantages of high temperature no flow, low temperature no brittleness, strong tensile and large elongation; Synthetic polymer waterproofing membrane is based on synthetic rubber, synthetic resin or a common mixture of the two, adding an appropriate amount of additives and fillers, etc., through plasticization, blending, or extrusion, vulcanization, shaping and other processes, made of elastic or plastic membrane without tire reinforcement or non-reinforcement. Synthetic polymer waterproofing membrane is a waterproofing membrane that has been rapidly developed in China in recent years, which has excellent tensile resistance, elasticity and aging resistance. Waterproof coating is a substance that will present a viscous liquid state at room temperature, coated on the surface of the substrate, volatilized by solvent or water, or chemical reaction between various components, to form a continuous film with a certain elasticity, so that the surface of the base layer is isolated from water, and can resist a certain water pressure, and play a waterproof and moisture-proof role.

Flexible mortar: The ratio of emulsion to mortar is 5:4, which is elastic, and will not affect the waterproof effect even if the base layer is deformed and cracked.

It is mostly used on the front surface of the wall and the ground, and can not be used on the back water surface such as the top surface. Hard mortar, also known as rigid mortar: the ratio of emulsion to mortar is 1:

4. There is no need to treat the coating after brushing, and it can be directly tiled, which is more convenient. After curing, it forms a cement hard block, which will not seep water, and the waterproof effect of its back water surface is very good, which is its biggest advantage. The disadvantage is that this kind of mortar has high hardness and is easy to crack with the deformation and cracking of the base layer, so it is generally used for waterproofing the back water surface.

The waterproof materials commonly used in construction projects include waterproof membranes, waterproof coatings, sealants, tiles, and other waterproof materials.

1. Waterproofing membranes are divided into asphalt-based waterproofing membranes (ordinary petroleum asphalt or oxidized asphalt waterproofing membranes) and polymer waterproofing membranes (plastic waterproofing membranes, rubber waterproofing membranes, rubber and plastic blended waterproofing membranes).

2. Waterproof coatings are divided into asphalt-based waterproof coatings (water emulsion asphalt-based waterproof coatings, solvent-based asphalt-based waterproof coatings), polymer waterproof coatings (water emulsion polymer waterproof coatings, reactive polymer waterproof coatings) and inorganic waterproof coatings.

3. Sealants are divided into main materials (such as asphalt paste, butyl sealant, polyurethane sealant, acrylic vinegar sealant, silicone sealant, etc.) (such as elastic sealant for windows, weather-resistant adhesive for curtain wall, epoxy sealant for dry-hanging stone curtain wall, silicone structural sealant for construction, etc.).

4. Other waterproof materials, such as grouting plugging materials, waterproofing agents, waterstops, waterproof glue, bentonite waterproof blankets, etc.

Commonly used waterproof materials for construction projects:

One. Bituminous-based waterproofing material.

JC-1 cold-water adhesive compound, neoprene-1 waterproof coating, fish oil modified asphalt coating, etc., all belong to this list. Common water emulsion asphalt coatings, JC-2 cold rubber compounds, waterborne asbestos asphalt waterproof coatings, elastic asphalt waterproof coatings, neoprene latex asphalt waterproof coatings, etc.

Two. Rubber-based and resin-based waterproofing materials:

EPDM membrane, neoprene waterproofing membrane, polyvinyl chloride (PVC) waterproofing membrane, chlorinated polyethylene waterproofing membrane, etc.; Waterproof coatings such as neoprene-hydralam coatings, low molecular weight butyl rubber coatings, silicone coatings and polyurethane coatings.

Three. Powdered waterproof coating:

Developed in the late 80s. It is a powder of inorganic non-metallic raw materials, and its surface is coated with a strong hydrophobic organic polymer material. During construction, the waterproof and heat-insulating powder is spread on the leveling layer, and then a layer of kraft paper is added as the isolation layer, and finally fine stone concrete is added on the isolation layer as the protective layer of the waterproof powder.

Pro, hello, I am glad to answer for you: what are the main waterproof materials used in construction projects, pro: there are many varieties of waterproof materials, which are divided into 4 categories according to their main raw materials:

Asphalt waterproofing material. Asphalt linoleum, paper tire asphalt linoleum, solvent-based and water-emulsion asphalt or asphalt rubber coatings and ointments made of natural asphalt, petroleum asphalt and coal asphalt as the main raw materials have good adhesion, plasticity, water resistance, corrosion resistance and durability. Rubber and plastic waterproof materials.

With neoprene, butyl rubber, EPDM rubber, polyvinyl chloride, polyisobutylene and polyurethane simple branches and other raw materials, it can be made into elastic tireless waterproof membrane, waterproof film, waterproof coating, coating material and ointment, cement, waterstop and other sealing materials, with high tensile strength, elasticity and elongation, good adhesion, water resistance and weather resistance, etc., can be used cold, long service life. Cement-based waterproofing materials. Admixtures that have the effect of promoting coagulation and compacting of cement, such as waterproofing agents, aerating agents and expansion agents, can enhance the hydrophobicity and anti-mold permeability of cement mortar and concrete; The coagulant mortar with cement and sodium silicate as the base material can be used for plugging and waterproofing underground projects.

Metal-based waterproof materials. Thin steel plates, galvanized steel plates, profiled steel plates, coated steel plates, etc. can be directly used as roof panels for waterproofing. Thin steel sheets are used for metal waterproofing in basements or underground structures.

Thin copper plates, thin aluminum plates, and stainless steel plates can be made into waterstops for building deformation joints. The joints of the metal waterproof layer should be welded and coated with anti-rust protective paint. —Excerpt.

When we build a house, some people choose waterproof materials, but there are many people who ask, what are the building materials, so what are the waterproof building materials, but we don't know much about these, and then we will introduce them to youWaterproofing building materialsOne. What are the waterproof building materials?

1 First of all, let's talk about itThere are three main types of waterproof materials: waterproof membranes, but they are mainly used in engineering construction, such as roofs, exterior walls, etc.; 911 polyurethane waterproof material, which also contains volatile toxic gas, but the construction requirements are strict and the cost is expensive; The new polymer cement-based waterproof material is composed of organic polymer liquid material and inorganic powder, and it also integrates the characteristics of high elasticity of organic materials and good durability of inorganic materials, but it forms a high-strength and tough waterproof coating film after coating, which is a common choice material for home defense.

2.Next, rigid waterproof materials: rigid waterproof materials refer to cement, sand and gravel as raw materials, or a small amount of admixtures, polymers and other materials mixed into it, but by adjusting the mix ratio, there is also inhibition or reduction of porosity, then change the pore characteristics, in order to increase the compactness between the interfaces of the raw materials, etc., prepared into cement mortar concrete waterproof materials with a certain anti-permeability ability.

3.There is also a flexible waterproof material: but it refers to a form of waterproof material relative to rigid waterproof materials such as waterproof mortar and waterproof concrete, so that it includes two types of waterproof coating film and waterproof membrane in the form of its attachment to the base layer.

Two. What are building materials.

1.First of all, in fact, the materials used in buildings are collectively referred to as building materials. However, the new type of building materials also includes a wide range of materials, including thermal insulation materials, thermal insulation materials, high-strength materials, breathing materials, etc., which are all new materials.

But building materials are a general term for materials used in civil engineering and construction projects. There are also building materials that can also be said to be divided into structural materials, decorative materials, and some special materials.

2.In fact, building materials include wood, bamboo, stone, cement, concrete, metal, bricks, ceramics, glass, engineering plastics, composite materials, etc.; In addition, when it comes to decorative materials, then it includes all kinds of paints, paints, coatings, veneers, tiles of various colors, but glass with special effects, etc.; Then special materials are generally used for waterproof, moisture-proof, anti-corrosion, fireproof, flame retardant, sound insulation, heat insulation, heat preservation, sealing, etc.

When we buy waterproof building materials, we don't know what they are, and what are the waterproof building materials, the above article is about what are the waterproof building materials and what are the building materials.