Laminates can be glued to wood to make the surface aesthetic and heat resistant. Melamine is an example of a laminate.
High pressure decorative laminates are used on plywood panels. Ex: Kraft paper impregnated with Phenol formaldehyde (PF)
5.8 Types of composite materials
Typical engineered composite materials include:
Composite building materials such as cements, concrete
Reinforced plastics such as fiber-reinforced polymer
Metal Composites
Ceramic Composites (composite ceramic and metal matrices)
5.9 Applications of laminar composites
In fact, the extent of these applications are used will depend on (1) the resolution of outstanding issues such as repairability, fire, durability and environmental concerns, (2) the extent to which automation in the manufacturing process can reduce cost, (3) the development of composite material based design concepts that optimize the use of the material, (4) the availability of validated codes, standards, and guidelines which can be used as design references and tools by the civil engineering community, and (5) the degree of quality control and quality assurance which can be developed and provided during the manufacturing/installation phase utilizing unskilled general construction labor.
5.10 Fibre textiles
Textile fiber has some characteristics which differ between fiber to Textile fiber. Textile fiber can be spun into a yarn or made into a fabric by various methods including weaving, knitting, braiding, felting and twisting. The essential requirements for fibers to be spun into yarn include a length of at least 5 millimeters, flexibility, cohesiveness, and sufficient strength. Other important properties include elasticity, fineness, uniformity, durability, and luster.Banana fiber is one kind of fiber but it is not a textile fiber. Because it can not fill up the above properties. So we can say that all fiber are not textile fiber. Types of Textile Fiber: Generally two types of fiber. 1. Natural fiber. 2. Manmade fiber.
Textile Fiber
5.11 Geomembranes and Geotextiles for earth reinforcement.
Geo grids are made from synthetic polymers with large openings (10 to 50 mm) to allow interlocking with surrounding geotechnical material. They have high dimensional stability and tensile strength at very low elongation. Because of the large openings, they cannot be used in filtration. They are mainly used for soil reinforcement, separation of materials and for improving bearing capacity of the soil.
Geo-Grid
Geo-synthetics are the materials made from synthetic polymers of polypropylene, polyester, or polyethylene that is used with soil, rock, or other geotechnical-related material. Important geo-synthetic products are as follows.
Geo-synthetics
Geo-membrane
Geo-grids
Geo-nets
Geo-meshes
Geo-composites
Geo-textiles.
Geo-textile (Geo-fabric)
Geo-textile is made of plastic threads that allow water to pass around them, but not very small particles of soil beneath them. Geotextile separates and contains the base from the underlying soil subgrade. It allows the base to shed water, and prevents the soil around it from working its way into the base. Without geotextile, the soil will work its way into the base and weaken it. This is a slow process that happens when the soil is saturated with water. Geotextile stops this process and extends the life of the base by many years. Geotextile is recommended for use over silt and clay soils. It is not essential in sandy soils.
Geo-grid
They are relatively stiff materials with large openings (10 to 50 mm) to allow interlocking with surrounding soil, rock, earth or any other geotechnical material. They have high dimensional stability and tensile strength at very low elongation.Because of the large openings, they cannot be used in filtration. They are mainly used for soil reinforcement, separation of materials and for improving bearing capacity of the soil.
Geonet
Geonet is a geosynthetic, consisting of integrally connected parallel sets of ribs overlying similar sets at various angles for planar drainage of liquids or gases.
Geo-membrane
Geo-membrane are continuous membrane barrier composed of asphaltic, polymeric or a combination. They have very low permeability so as to control fluid migration in a geotechnical engineering-related structure.
Geosynthetic clay liner
They are hydraulic barriers consisting of a layer of bentonite clay sandwitched between geotextiles and/or geomembranes and mechanically held together by needling, stitching, or chemical adhesive.
Geocomposities
It consists of combinations of geotexites, geogrids, geomembranes and/or other materials. In geocomposites, best features of different types of geosynthetics are incorporated in such a way that the joint action of the materials provide optimal performance in a particular situation.
Geomesh
Geo-mesh is light and flexible, strong and resilient. It controls soil erosion, protects constructions, allows water to drain, while reducing water table pressure. It is made of Polypropylene-HDPE.