Terrazzo floor repair and polishing is a relatively simple construction method, but it is not easy to really give the terrazzo floor a new look.

According to our experience in the construction practice of modern protective buildings, the key of terrazzo floor renovation is not polishing, but repairing, that is, the floor should not see cracks, and the repaired crack surface should have no or very small color difference with the surrounding floor.

(1) Operating procedures

Crack repair - mechanical polishing - complementary color treatment - coating protective agent

(2) Key points of operation

Crack repair

A. Analyze the cement, cement grade and stone particle size range of the original terrazzo floor.

B. Select stones with the same cement and particle size as the original terrace.

C. Expand the crack according to the natural trend of the crack.

D. Mix the selected cement, stone and grading.

E. Caulk the blended terrazzo raw materials. The gap should be cleaned. After cleaning, the concrete interface agent should be applied to ensure that the new material is firmly bonded to the original ground.

Mechanical polishing

A. Before mechanical grinding, it must be confirmed that all cracks have been treated and that the newly embedded terrazzo has solidified firmly and has considerable strength.

B. The grinding plate shall be polished layer by layer with 600 mesh high-grade oilstone.

C. After grinding, check the effect, and then change the oilstone with higher mesh number for finer grinding according to the situation.

D. At the repaired cracks, the grinding shall be careful, and the interface shall be carefully checked for flatness. The grinding shall not be stopped until it is leveled.

E. At the internal corner, the hand-held small mill must be changed for grinding.

Complementary color treatment

A. After mechanical polishing, clean with oxalic acid.

B. Carefully check the crack repair, and mainly observe the color difference of the floor finish.

C. If the color difference is large, please ask professionals to make color matching and repair to reduce the degree of color difference.

Apply protective agent

A. Before applying the protective agent, the floor must be free of dust.

B. The stone protective agent shall be painted evenly without omission

Good polishing work must with good tools. TransGrind supply different kinds of diamond tools for terrazzo grinding and polishing ,also for concrete and stone. We have supplied many different kinds of diamond tools for many customers, such as Scanmaskin tools, Lavina tools, Klindex tools, Husqvarna tools, HTC tools etc.Welcome to consult for our products by clicking pictures to get into our official web if you are interested.