🧱 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” 🛣️💪