| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. MATERIAL VERIFICATION | |||
| A1 | Cement quality verified: approved batch used; certification present; not expired Acceptance: Cement ≤3 months old; test report available; grade confirmed (OPC/PPC) | Cl. 3 — Cement selection | OK NC NA HOLD |
| A2 | Sand quality conforming to IS 383: proper grading; no deleterious materials Acceptance: Sand tested; Zone II or Zone III; sieve analysis pass; cleanliness verified | Cl. 4 — Fine aggregate | OK NC NA HOLD |
| A3 | Lime (if used) confirmed: hydrated lime, pure and free from impurities Acceptance: Hydrated lime used; storage proper; no lumping or degradation; fresh material | Cl. 5 — Lime selection | OK NC NA HOLD |
| A4 | Water source: potable water used; no contamination with oils, acids, or salts Acceptance: Clean potable water; pH 6-8; no visible contamination; sourced from approved supply | Cl. 6 — Water quality | OK NC NA HOLD |
| B. MIX PROPORTIONS AND MEASUREMENT | |||
| B1 | Mortar mix proportions verified: cement:sand:lime ratio per design or IS standard Acceptance: Proportions per specification (1:3 CS or 1:1:6 CLS typical); measured accurately; documented | Cl. 7 — Mix design | OK NC NA HOLD |
| B2 | Materials measured volumetrically (buckets) or by weight; accuracy ≥±2% Acceptance: Same-sized containers used; level measurement; documented quantities; consistency maintained | Cl. 7.1 — Measurement method | OK NC NA HOLD |
| C. MIXING PROCEDURE | |||
| C1 | Materials mixed mechanically or manually until uniform color and consistency achieved Acceptance: Dry mix 1-2 minutes; water added gradually; wet mix 3-5 minutes minimum | Cl. 8 — Mixing method | OK NC NA HOLD |
| C2 | No segregation or color variation in mixed mortar; uniform appearance throughout Acceptance: Consistent color; no unmixed pockets; components homogeneously distributed | Cl. 8.1 — Mix uniformity | OK NC NA HOLD |
| C3 | Mixing duration adequate to ensure complete hydration of lime (if used) Acceptance: Mixing time sufficient; lime fully incorporated; no lumps visible | Cl. 8.2 — Hydration | OK NC NA HOLD |