WHAT IS SANDBLASTING? – ProCivilEngineer.com

sandblasting
sandblasting

Sand blasting is the process of roughing and cleaning the surface of old and set concrete (or any rusted steel surface) by means of coarse sand and air at a pressure of 90 to 100 pounds per square inch (6.33 to 7.03 kg per square centimeter). process. ) by means of a nozzle, so as to wipe off the lathes and grout from the old and fresh concrete monolithic.

The rock is also sand blasted so that the concrete can be placed on or against a clean surface according to specifications.

There are two types of sand blasting, namely “wet sand blasting” And “dry sand blasting“. Blasting water in wet sand is also used with sand and air under pressure, whereas in the latter, only sand and air are used under pressure. Generally on concrete and rock surface etc., dust down Wet sand is destroyed for keeping.

The percentage of sand particles of different sizes for efficient sand blasting will be as follows:

Shape

Percent

8 Mesh Per Inch (25.40mm)

26

16 Mesh Per Inch (25.40mm)

30

30 Mesh Per Inch (25.40mm)

23

50 Mesh Per Inch (25.40mm)

21

Effective sand blasting requires that the air pressure be between 90 and 100 pounds per square inch (6.33 to 7.03 kilograms per square centimeter). If the pressure drops below 90 pounds per square inch (6.33 kilograms per square centimeter), a sand blast becomes effective. If a large amount of fine sand is used, it will not provide the required cutting power and the whole effort is wasted. A good quality “sand-blast-sand” is required to achieve the purpose of sand blasting.



Er. Mukesh Kumar

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Er. Mukesh Kumar is Editor in Chief and Co-Funder at ProCivilEngineer.com Civil Engineering Website. Mukesh Kumar is a Bachelor in Civil Engineering From MIT. He has work experience in Highway Construction, Bridge Construction, Railway Steel Girder work, Under box culvert construction, Retaining wall construction. He was a lecturer in a Engineering college for more than 6 years.