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Dry Lean Concrete Mix Design.

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The Foundation Layer for Rigid Pavements and Heavy-Duty Structures

Dry Lean Concrete Mix Design (DLC) is a specialised form of concrete characterized by a low cement content, high aggregate ratio, and very low water content, resulting in a stiff, no-slump mixture. Unlike structural concrete, DLC is not designed for high compressive strength — its primary role is to serve as a strong, stable, and durable base layer beneath Pavement Quality Concrete (PQC) or structural foundations. At Global Lab, we perform DLC Mix Design as per IRC:SP-49 and MORTH Section 601, ensuring that every mix achieves the required density, compressive strength, and optimum moisture content (OMC) for long-term pavement performance.

Why DLCMatters.

To Achieve Strength and Structural Stability

Though low in cement, DLC must provide sufficient compressive strength (typically 10 MPa in 7 days) to resist deformation under the load of PQC and traffic. A precise mix design ensures uniform load distribution, dimensional stability, and reduced settlement across large pavement areas.

To Determine the Optimum Moisture Content

The most critical parameter in DLC is the OMC, which determines the concrete’s density and strength after compaction. Too little water → Dry, unworkable mix leading to voids and poor compaction. Too much water → Sticky mix causing adhesion to rollers and loss of density. Through lab-controlled trials, Global Lab determines the exact water requirement that achieves maximum dry density (MDD) — ensuring optimum strength and uniform compaction in the field.

To Optimize Cost and Material Usage

DLC is widely used for economic efficiency in large-scale infrastructure. Our mix design process ensures minimum cement content while maintaining the required performance — achieving significant cost savings without compromising quality. Optimised proportioning also reduces wastage and enhances material utilisation efficiency.

To Maintain Quality and Consistency On-Site

A standardized DLC mix allows for consistent batching, placement, and compaction across the project. Regular cube testing and field density checks ensure compliance with specifications such as IRC:SP-49 and MORTH, ensuring uniform performance throughout construction.

NDT TESTING

GL Advantages.

Accredited Facility: NABL-accredited laboratory with traceable calibration and stringent Quality System procedures.

Compliance with Standards: Tests conducted in accordance with relevant IS/ASTM/RILEM/EN standards.

Experienced Personnel: Technologists and experts who interpret results and recommend mitigation strategies.

Rapid and Reliable Reporting: Valid reports that comply with relevant standards.

Testing Capabilities: Lab and on-site testing, along with post-test consulting services.

Global Lab Advantage.

Accredited facility.
Standards compliance.
Experienced analysts.
Fast, reliable reporting.
Field + Lab capability.

Applications

Base and sub-base layers beneath rigid pavements (highways and expressways).
Runways, taxiways, and industrial flooring systems.
Bridge approaches and toll plaza foundations.
Port, container, and heavy vehicle yards.
Base preparation for foundations and floor slabs requiring load stability.
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Dry Lean Concrete Mix Design
Dry Lean Concrete Mix Design

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Advanced Lab & Field Testing

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On-Site Testing Across India

Global Lab provides comprehensive testing for construction and engineering materials, including concrete, cement, steel, aggregates, bitumen, soil, tiles, paver blocks, and other civil and infrastructure materials. We also handle customized tests as per client or project specifications.

Yes. Our team is equipped with mobile testing facilities and field instruments for on-site sampling, inspection, and testing — ensuring quick and reliable results without disrupting your project timelines.