1), easy weathering and aging, the life cycle is generally 2-5 years;
2), the surface is rough, the gap is large, the stain resistance is extremely poor, and it cannot be cleaned after being contaminated;
3) Even if the original waxing and maintenance method is used to improve the surface finish, due to the complexity of the operation organization, the cost is huge and the effect is not satisfactory.
For the above reasons, it is generally believed that terrazzo is a medium and low-grade floor decoration material.
The traditional terrazzo has a unique advantage in low cost, freely splicing, and convenient construction. It has a huge market in China, and has a terrazzo floor of more than one billion square meters in various urban and rural buildings.
However, the traditional construction techniques have caused the terrazzo floor to be very rough and filthy, and even dirty before it has been delivered, it has caused serious obstacles to daily hygiene and cleaning. However, with the passage of time, the actual use has encountered a very prominent problem: terrazzo weathering, abrasion, stains, bleak and dull. How to restore the weathered and abraded terrazzo to its original beauty is an increasingly urgent problem to be solved in the building decoration industry.
Glass bits have a spade-shaped carbide point, used to drill holes in materials of glass, ceramics,etc. They generate high temperatures and have a very short life. Holes are generally drilled at low speed with a succession of increasing bit sizes. Diamond drill bits can also be used to cut holes in glass, and last much longer.
It is an alloy triangular bit mounted on the ordinary Electric Hand Drill, which has high hardness, sharp blade and good precision, and is specially used for opening holes in ceramic tiles. But the drill wears too much into concrete to be used on concrete.
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