🧱Concrete Workability & Quality Control (Slump Test & Cube Test)
Concrete quality starts with proper workability and systematic quality control.
The Slump Test (EN 12350-2) measures the consistency and workability of fresh concrete using a standard slump cone (300 mm high, 200 mm bottom diameter, and 100 mm top diameter). The cone is filled in three equal layers, with each layer compacted using 25 tamping rod strokes.
After lifting the cone vertically, the decrease in height (slump) indicates the concrete's workability.
Typical slump classifications are:
0–25 mm: Very Low Workability
25–50 mm: Low Workability
50–100 mm: Medium Workability
100–150 mm: High Workability
150–210 mm: Very High Workability
Slump results may appear as True Slump (acceptable), Shear Slump (lack of cohesion), or Collapse Slump (excessively wet mix).
🌟For effective Concrete Quality Control (QC):
✅ Verify the delivery slip (grade, time, truck number, quantity, admixtures).
✅ Take a representative concrete sample (20–25 kg).
✅ Perform the slump test before placing concrete.
✅ Cast 150 × 150 × 150 mm concrete cubes.
✅ Cure cubes in clean water at 20 ± 2°C.
✅ Test compressive strength at 7 days and 28 days (standard), with optional testing at 2, 56, and 90 days.
✅ Record all results for quality assurance and traceability.
▶️Proper workability testing and quality control ensure stronger, more durable concrete structures with improved long-term performance.
#CivilEngineering #Concrete #ConcreteWorkability #SlumpTest #QualityControl #ConcreteTesting #CubeTest #CompressiveStrength #Construction #SiteEngineering #StructuralEngineering #CivilTechTime #BuildingConstruction #Engineering #ConstructionMaterials #ConcreteTechnology #EN12350 #QualityAssurance #Infrastructure #EngineeringEducation
@etconp
Concrete quality starts with proper workability and systematic quality control.
The Slump Test (EN 12350-2) measures the consistency and workability of fresh concrete using a standard slump cone (300 mm high, 200 mm bottom diameter, and 100 mm top diameter). The cone is filled in three equal layers, with each layer compacted using 25 tamping rod strokes.
After lifting the cone vertically, the decrease in height (slump) indicates the concrete's workability.
Typical slump classifications are:
0–25 mm: Very Low Workability
25–50 mm: Low Workability
50–100 mm: Medium Workability
100–150 mm: High Workability
150–210 mm: Very High Workability
Slump results may appear as True Slump (acceptable), Shear Slump (lack of cohesion), or Collapse Slump (excessively wet mix).
🌟For effective Concrete Quality Control (QC):
✅ Verify the delivery slip (grade, time, truck number, quantity, admixtures).
✅ Take a representative concrete sample (20–25 kg).
✅ Perform the slump test before placing concrete.
✅ Cast 150 × 150 × 150 mm concrete cubes.
✅ Cure cubes in clean water at 20 ± 2°C.
✅ Test compressive strength at 7 days and 28 days (standard), with optional testing at 2, 56, and 90 days.
✅ Record all results for quality assurance and traceability.
▶️Proper workability testing and quality control ensure stronger, more durable concrete structures with improved long-term performance.
#CivilEngineering #Concrete #ConcreteWorkability #SlumpTest #QualityControl #ConcreteTesting #CubeTest #CompressiveStrength #Construction #SiteEngineering #StructuralEngineering #CivilTechTime #BuildingConstruction #Engineering #ConstructionMaterials #ConcreteTechnology #EN12350 #QualityAssurance #Infrastructure #EngineeringEducation
@etconp
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1, the 7day cube test fails and 28days pass
2, both 7day and 28 days fail