🧱 DLC (Dry Lean Concrete) in Road Construction – Complete Practical Guide for Site Engineers
Introduction
DLC (Dry Lean Concrete) rigid pavement (PQC road) का base layer होता है। यह layer PQC slab को uniform support देती है और settlement control करती है।
👉 “Strong DLC = Strong PQC Road”
इस article में हम DLC work को material से execution तक step-by-step समझेंगे।
What is DLC (Dry Lean Concrete)?
DLC एक low cement content concrete होता है जो rigid pavement में base layer के रूप में use होता है।
Why DLC is Important?
Uniform base provide करता है
Load distribution improve करता है
Settlement reduce करता है
PQC slab support करता है
DLC Mix Details
Grade: M10 / M15
Cement Content: 150–200 kg/m³
Thickness: 100–150 mm
Materials Used
Cement
Coarse Aggregate
Fine Aggregate
Water
Equipment Used
Batching Plant
Transit Mixer / Tipper
Paver Machine / Grader
Vibrator
Roller
Step-by-Step DLC Work Procedure
1. Subgrade / GSB Preparation
Proper compaction
Level check
Surface clean
2. Batching & Mixing
Batching plant use करें
Proper mix maintain करें
3. Transportation
Tipper / Transit mixer use करें
Delay avoid करें
4. Laying
Paver / grader से spread करें
Thickness maintain करें
5. Compaction
Roller से compaction करें
Proper density achieve करें
6. Finishing
Surface level करें
Smooth finish दें
7. Curing
Water curing करें
Minimum 7 days
Quality Control Tests
Cube Test
Thickness Check
Level Check
Common Problems
❌ Uneven surface
❌ Low compaction
❌ Poor mix
Solutions
✔ Proper leveling
✔ सही compaction
✔ Mix control
Site Engineer Responsibilities
Level checking
Thickness verification
Quality control
Practical Tips
✔ Continuous laying करें
✔ Cold joints avoid करें
✔ Surface clean रखें
Conclusion
DLC rigid pavement का backbone है। Proper execution से PQC road strong और durable बनती है।
Final Words
👉 “Strong DLC = Long Life PQC Road” 🛣️💪