The sand used for plaster work can be natural sand, crushed stone sand or crushed gravel sand. grading range of sand for plaster work; For interior and exterior wall and ceiling should be given in the table below.
Grading range of sand for plaster work
|sieve size is||pass percentage|
|4.75 mm||95 – 100|
|2.36 mm||95 – 100|
|1.18 mm||90 – 100|
|600 micron||80 – 100|
|300 micron||20 – 65|
|100 micron||0 – 15|
notes to remember
- If the grading falls outside the limits of the grading zone of the sieve (except 150, 300 and 600 micron IS sieve), the aggregate amount does not exceed 5%, it will be considered to be under gradation.
- For crushed stone sand and crushed gravel sand, the permissible limit on 150 micron IS sieve has been increased to 20%.
- The fineness modulus of sand should be as per the following table.
|sand type||fineness modulus|
|crushed stone sand||1.4. not less than|
|crushed gravel sand||1.4. not less than|
|natural sand||1.5. not less than|
IS:1542-1992 – Sand for plaster – Specification