Controlled Modulus Column (CMC)® Rigid Inclusions by Menard

What is Controlled Modulus Column®?

Controlled Modulus Column (CMC) is an environmentally sound and economical solution for strengthening soft ground using grouted inclusion.

Controlled Modulus Column was invented by Menard in 1990s as a cost effective alternative to piles. It increases the stiffness of the treated soil mass by allowing effective load sharing between the soils and the columns.

Controlled Modulus Columns (CMC) provides the benefits of traditional deep foundations, but without the need for extensive excavation or high-volume concrete usage.

By introducing rigid grout inclusions into the soil, this method offers an effective and environmentally friendly solution for supporting a wide range of structures.

About CMC

The installation process employs a custom-engineered displacement auger, driven by high-torque machinery equipped with robust static down thrust.

This method laterally displaces soil with minimal vibration and near-zero spoil generation during penetration.

As the auger advances to the target depth, it simultaneously compacts and densifies the surrounding ground. A cement-based grout is then pressure-injected to form a rigid or semi-rigid inclusion, enhancing structural stability.

This creates a unified soil-column composite system that functions cohesively, significantly improving load-bearing performance.

The technique ensures minimal surface disturbance and eliminates vibration-related risks to adjacent structures or environments.

With diameters ranging from 25 to 60 cm, hundreds of meters of these columns can typically be installed in a single work shift.

Detailed installation records are generated for every column to ensure quality and compliance.

This method adapts to diverse ground conditions, including loose sands, soft loams, organic layers, and anthropogenic materials such as uncompacted fills or industrial heaps. The system is compatible with a broad spectrum of structures, from enclosed buildings and critical infrastructure to specialized industrial installations.

The length of the Controlled Modulus Column (CMC) depends on the loadings and allowable settlements, which corresponds to the length of the anchorage in load bearing soils. Depending on the load per column, the diameter (ranging from 25 to 60 cm) and spacing (ranging from 1.2 to 2.5 m) are adjusted accordingly.

Application

This solution supports a range of critical infrastructure projects, including:

1. Industrial warehouses and commercial buildings

2. Heavy storages facilities

3. Slabs-on-grade foundations

4. Tanks and silos

5. Road and railways embankments

Benefits of CMC

1. Improved Soil Stability

The primary benefit of CMC is enhanced soil stability. This method reduces the likelihood of soil settlement and ensures a stable foundation for structures built on soft or weak soil.

2. Cost Efficiency

CMC requires less material and time than traditional foundation methods. By avoiding deep excavations and large volumes of concrete, project costs are significantly reduced.

3. Environmental Responsibility

With minimal spoil generation and reduced concrete usage, CMC installations have a lower environmental impact, making them a sustainable choice for modern projects.

4. Adaptability

The Controlled Modulus Column (CMC) solution is highly versatile. It is suitable for various soil types, including organic-rich soils such as peat or soft clay.

Why Choose CMC?

✅ Effective Load Distribution

The columns transfer loads through compressible soil layers into more competent strata.

✅ Low Vibration Impact

CMC installation creates minimal vibrations, making it ideal for projects near sensitive structures.

✅ Environmentally Sound

CMC reduces the need for large volumes of concrete and excavation, resulting in lower carbon emissions and reduced waste.

✅ Faster Installation

Compared to traditional piling, CMC is quicker to install, saving both time and costs.

How Controlled Modulus Column Works

Technical Overview

The Controlled Modulus Column system reinforces soft soils by inserting grout columns that act as rigid inclusions. The rigid inclusions limit the settlement of the ground, thus improving its stability.

A displacement auger, driven by high-torque equipment, displaces soil laterally as it drills into the ground. Grout is then injected under controlled pressure to create the column. This process not only strengthens the surrounding soil but also ensures minimal spoil and vibration during installation.

The result is a composite soil/cement ground improvement system.

Installation Process

1. Pre-drilling (if necessary)

A hole is drilled in areas where the soil is too dense or difficult to penetrate.

2. Drilling the columns

A specially designed augers or hollow steel rods are inserted into the ground to the required depth.

3. Grout Injection

As the auger is withdrawn, grout is injected under controlled pressure, forming the column.

4. Column Formation

The columns are strategically formed and spaced in a pattern to support the entire structure above.

Equipment Used

CMC installation relies on specialized equipment such as heavy drilling rigs, grout pumps, and monitoring systems to ensure precision.

Menard Asia utilizes state-of-the-art equipment to guarantee optimal performance and consistency across all projects.

Menard Quality Assurance

At Menard Asia, quality is at the heart of every project. Our team of engineers and ground improvement specialists works closely with clients to ensure that each CMC project is executed to the highest standards, meeting both technical and environmental regulations.

⬇️ Download CMC Brochure

FAQs About CMC by Menard Asia

What types of projects can benefit from Controlled Modulus Columns?

Controlled Modulus Columns can be applied to a wide variety of projects, from small-scale developments like private villas to massive infrastructure ventures such as runways and industrial complexes. CMC is versatile enough to handle diverse structural loads and foundation needs, making it ideal for projects of all sizes, including warehouses, embankments, and commercial buildings.

What types of soil are best suited for Controlled Modulus Columns?

CMC is highly adaptable and works well in various soil types, including compressible soils such as clay, silt, sand, and soils with organic content like peat. The technique can improve the stability and strength of even the weakest soil conditions.

Are there any environmental impacts associated with Controlled Modulus Columns?

CMC is an environmentally friendly solution. The process generates minimal waste and spoil material, and because it requires less concrete and fewer deep excavations, it significantly reduces the overall carbon footprint of a project. Moreover, it does not produce vibrations, making it safe for nearby sensitive environments.

How long does the Controlled Modulus Column installation process take?

The duration of CMC installation varies depending on the project size and soil conditions. However, it is generally quicker than traditional deep foundation methods, often completing weeks ahead of schedule. For smaller projects, the installation may take just a few days, while larger-scale ventures may take several weeks.

Can Controlled Modulus Columns be used in conjunction with other ground improvement techniques?

Yes, CMC can be combined with other ground improvement methods, depending on the project’s specific needs. It can complement techniques such as prefabricated vertical drains (PVD) and dynamic compaction, offering a comprehensive solution for complex soil conditions.

How do I know if Controlled Modulus Columns are suitable for my project?

Let’s find out together. Menard Asia offers free concept and feasibility studies to help determine the best solution for your project. Contact us, and our experts will guide you through the process.

Can Controlled Modulus Columns be built where groundwater is present?

Groundwater is no obstacle. Care should be taken and the design should be adapted accordingly in cases where the water flow through the soil is high.

Is there a risk that earthworks will break the columns?

Our company systematically controls cut-off to ensure the quality of the works. There is no risk of damage if earthworks are carried out according to best practices.

Interested in using CMC for your next project?

Request a Quote today, and one of our specialists will get in touch to discuss your requirements. Our team of experts is ready to assist you in finding the best solution for your ground improvement needs.

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Menard Asia Expertise in CMC

As an industry leader in ground improvement, Menard Asia combines decades of experience with cutting-edge technology to deliver world-class solutions. What sets us apart is our strong local presence and understanding of regional challenges. Our team of experts, based locally in the countries where we operate, works closely with clients to provide personalized solutions. Our commitment to client success ensures that every project meets the highest technical and environmental standards.