Blinding is the process of applying a thin layer of concrete or another material, such as lean mix concrete, over a surface like a subgrade or soil. This layer creates a smooth, stable foundation for subsequent construction work.
Blinding is crucial in preparing the site for further construction, providing practical and protective benefits. From enhancing the foundation’s strength to improving the construction process’s efficiency, understanding the significance of blinding is essential for achieving a successful and durable structure.
In this article, we will explain what blinding is in construction, including its purposes and types, and why this process is essential for any successful construction project.
Benefits of Blinding in Construction
1. Protection of the Foundation
Blinding protects the foundation from contaminants such as oils, chemicals, and debris that could compromise the integrity of the concrete or other materials placed above it.
2 . Soil Stabilization
The blinding layer plays a crucial role in enhancing the stability of the ground beneath a structure. By providing a stable surface, it effectively distributes loads from the building and reduces the potential for soil shifts. This is important in areas where the soil may be prone to movement due to factors like seismic activity.
3 . Damage Control
By providing a buffer between the soil and these materials, blinding minimises the risk of direct contact with moisture and contaminants present in the soil, which can lead to corrosion or rust over time.
4. Cost Efficient
It is a relatively low-cost solution and easy to apply compared to other more complex measures, making it an efficient step in the foundation preparation process.
Types of Blinding
Based on the type of material used, these are the various types of blinding:
- Concrete Blinding
This is the most common type of blinding and involves using lean concrete (a mixture of cement, sand, and aggregates) to create a smooth, level surface. Concrete blinding is typically used when a strong, durable surface is needed before placing the foundation slab or floor.
- Crushed Stone Blinding
In this type of blinding, a layer of gravel or crushed stone is spread over the ground. This layer helps create a stable base and can be used when a less rigid surface is acceptable. This type of blinding is suitable for areas with good drainage or where the foundation does not require a highly stable surface.
- Sand Blinding
A layer of clean sand is spread over the ground to create a smooth, level surface. Sand blinding is often used when the underlying soil is relatively stable and does not need additional support. It is often used under floors or in less critical construction areas where moisture protection is not a major concern.
- Bitumen Blinding
A bitumen (or tar) layer can be applied to the ground or foundation to provide a waterproof barrier. This type of blinding is commonly used in areas prone to moisture or where a waterproof layer is needed before laying the main foundation or slab. Typically used in wet areas where water penetration or dampness is a concern.
- Chemical Blinding
This involves the use of a chemical compound or adhesive that is applied to the surface to prevent moisture penetration or improve the soil’s stability. Chemical blinding is used when additional soil stabilisation is needed; this method is often used in unstable or weak soil conditions.
Hiring the best construction company
Construction blending involves various techniques and materials to ensure a durable, watertight, and aesthetically pleasing finish. This process involves researching the soil type and determining the most appropriate materials for blinding. It also requires the acquisition of suitable materials and expertise to ensure the successful completion of the process.
At Dutum Construction Company Limited, we approach your projects with the utmost dedication, expertise, and attention to detail, ensuring exceptional quality and precision.
With our years of experience and expertise, we deliver top-notch construction solutions that meet and exceed your expectations.
Why Dutum Construction Company?
- Customer Satisfaction: At Dutum Group, customer satisfaction is of utmost importance. We prioritise open communication, transparency, and collaboration to bring each client’s vision to life seamlessly.
- Exceptional Track Record: Dutum Group has completed numerous landmark projects in Nigeria, earning the trust and respect of clients and industry peers alike.
- Dedicated Team: At Dutum Group, we are passionate about what we do, consistently going above and beyond to deliver results that exceed expectations.
Contact information:
We are located in various parts of Nigeria.
Abuja:
10 Danube Close,
off Danube Crescent
Maitama, Abuja
Phone: +234 805 831 7200
Lagos:
2 Abisogun Road,
Off Palace Road,
Oniru Estate,
Maroko, Lagos
Phone: +234 805 831 7200
Ibadan:
Isaac’s Place,
Opp. TOTAL Petrol Station,
Onireke, G.R.A
Dugbe, Ibadan
Phone: +234 706 967 1901
You can visit our website at https://dutumgroup.com.
Or you can email us at info@dutumgroup.com
Conclusion
Blinding is a critical aspect of building construction, providing protection, strength, and stability. Understanding the types, techniques, and applications of Blinding enables builders and architects to create durable, stable and functional structures.
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