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Test-report · QC-ROD-TST-001
Marshall Stability & Flow Test Report
21 checkpoints across 7 sections. For every bituminous mix design; daily QA testing during plant production
21 Checkpoints
7 Sections
Daily during production; per batch/lot minimum
Testing Laboratory, QC Engineer
IS 2720:1973SP 20:2002ASTM D6927:2021

Checklist Preview

S.No.CheckpointIS RequirementStatus
A. TEST PROCEDURE & METHODOLOGY
A1Marshall specimen preparation per IS 2720 / ASTM D6927; compaction 75 blows per face
Acceptance: 75 blows per face (standard); specimen diameter 100mm ±2mm; height 63.5mm ±2mm		Cl. 503 — Sample preparation standard
B. STABILITY & FLOW TEST RESULTS
B1Marshall Stability measured at 60°C; minimum value ≥1800 kg for normal heavy traffic
Acceptance: Minimum: 1800 kg heavy traffic; 1500 kg medium traffic; 1200 kg light traffic; measured at 60°C		Cl. 503 — Stability requirement
B2Marshall Flow measured at 60°C; target range 2-4 mm for normal mixes
Acceptance: Flow: 2-4 mm (normal); >4 mm indicates rutting potential; <2 mm indicates brittleness		Cl. 503 — Flow requirement
B3Quotient (Stability/Flow) calculated; minimum 400 kg/mm recommended
Acceptance: Quotient = Stability / Flow; value ≥400 kg/mm indicates good mix design quality		Cl. 503 — Mix quality index
C. VOLUMETRIC PROPERTIES
C1Bulk Density measured for each specimen; average calculated
Acceptance: Measured by water immersion method (ASTM D2726) or dry specimen weighing; ±2% accuracy		Cl. 503 — Density measurement
C2Theoretical Maximum Density (TMD) determined by Rice Gravity Test (ASTM D2041)
Acceptance: Rice gravity test on same binder/aggregate blend; result ±0.05 precision		Cl. 503 — TMD determination
C3Void Ratio in Mineral Aggregate (VMA) calculated; minimum 13% for 19mm nominal size
Acceptance: VMA = (TMD - Bulk Density) × 100 / TMD; minimum: 13% (19mm), 15% (32mm)		Cl. 503 — VMA requirement
C4Void Ratio in Mix (VIM) calculated; target 3-5% for normal traffic
Acceptance: VIM = (TMD - Bulk Density) × 100 / TMD; target: 3-5%; <3% over-compact, >5% under-compact		Cl. 503 — VIM requirement
C5Voids Filled with Bitumen (VFB) calculated; target 65-75% for normal mixes
Acceptance: VFB = (VMA - VIM) × 100 / VMA; target 65-75%; <65% drains, >75% rutting risk		Cl. 503 — VFB requirement
Showing 9 of 21 checkpoints ·
A. TEST PROCEDURE & METHODOLOGY
A1Marshall specimen preparation per IS 2720 / ASTM D6927; compaction 75 blows per face
Cl. 503 — Sample preparation standard (IS 2720 / SP 20)
✓ 75 blows per face (standard); specimen diameter 100mm ±2mm; height 63.5mm ±2mm
B. STABILITY & FLOW TEST RESULTS
B1Marshall Stability measured at 60°C; minimum value ≥1800 kg for normal heavy traffic
Cl. 503 — Stability requirement (SP 20)
✓ Minimum: 1800 kg heavy traffic; 1500 kg medium traffic; 1200 kg light traffic; measured at 60°C
B2Marshall Flow measured at 60°C; target range 2-4 mm for normal mixes
Cl. 503 — Flow requirement (SP 20)
✓ Flow: 2-4 mm (normal); >4 mm indicates rutting potential; <2 mm indicates brittleness
B3Quotient (Stability/Flow) calculated; minimum 400 kg/mm recommended
Cl. 503 — Mix quality index (SP 20)
✓ Quotient = Stability / Flow; value ≥400 kg/mm indicates good mix design quality
C. VOLUMETRIC PROPERTIES
C1Bulk Density measured for each specimen; average calculated
Cl. 503 — Density measurement (IS 2720)
✓ Measured by water immersion method (ASTM D2726) or dry specimen weighing; ±2% accuracy
C2Theoretical Maximum Density (TMD) determined by Rice Gravity Test (ASTM D2041)
Cl. 503 — TMD determination (ASTM D2041)
✓ Rice gravity test on same binder/aggregate blend; result ±0.05 precision
C3Void Ratio in Mineral Aggregate (VMA) calculated; minimum 13% for 19mm nominal size
Cl. 503 — VMA requirement (SP 20)
✓ VMA = (TMD - Bulk Density) × 100 / TMD; minimum: 13% (19mm), 15% (32mm)
C4Void Ratio in Mix (VIM) calculated; target 3-5% for normal traffic
Cl. 503 — VIM requirement (SP 20)
✓ VIM = (TMD - Bulk Density) × 100 / TMD; target: 3-5%; <3% over-compact, >5% under-compact
C5Voids Filled with Bitumen (VFB) calculated; target 65-75% for normal mixes
Cl. 503 — VFB requirement (SP 20)
✓ VFB = (VMA - VIM) × 100 / VMA; target 65-75%; <65% drains, >75% rutting risk
Showing 9 of 21 ·
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