🧱 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” 🛣️💪