Bricks vs. Blocks: Understanding the Differences and Advantages in Construction

When it comes to construction, choosing the right materials can significantly impact the quality and efficiency of a project. Two common materials used in construction are bricks and blocks. In the United Kingdom, the most commonly used standard brick is 215 x 102.5 x 65 mm without mortar, while a block is 440 x 215 x 100 mm. This article explores the differences between bricks and blocks and discusses the notable advantages of using one over the other.

The Benefits of Using Blocks Over Bricks

There are several advantages to using blocks over bricks, particularly in terms of construction speed and cost efficiency.

Size and Speed

Blocks are larger in size compared to bricks, which means they cover a larger area and can be laid more quickly, leading to faster construction progress. This is a significant advantage in terms of both time and cost. For instance, 60 standard bricks per m2 and about 10 blocks per m2 can be laid using blocks, as opposed to just 6 or 7 bricks per m2.

The larger size of blocks also means that less mortar is required compared to bricks. This further reduces the cost and labor involved in construction.

Logistical Cost Effectiveness

Blocks are more logistically cost-effective compared to bricks. They are easier to handle and transport, leading to lower labor and material costs. Moreover, the smaller size of bricks means that more of them are required to cover the same area, which can increase both the cost and the time needed for the project.

Physical Properties

Blocks have a higher weight-per-size ratio, making them more efficient to handle. The ratio of brick to block is approximately 6:1, meaning that for every 6 bricks, you only need 1 block. This not only reduces the total weight of materials used but also the amount of mortar, leading to cost savings and more efficient construction.

Both blocks and bricks are classified as masonry units in construction engineering, but they differ in terms of their design and suitability for different applications. A brick is defined as a masonry unit that can be lifted and placed by one hand without causing fatigue to the mason during a full day's work. It should not be wider than 5 inches (12.5 cm) or heavier than 3 kilograms. Bricks can be made from a variety of materials, including clay, stabilized soil, refractory cement, concrete, lime, flyash, gypsum, sand, cement, flyash, sand, fired, or unfired.

A block, on the other hand, is a masonry unit that requires both hands to lift and place in masonry. It is typically heavier, with a weight of 16 to 18 kilograms and a length of no more than 2 feet (60 cm).

Internal and External Construction

Bricks are more commonly used for external work on residential properties due to their aesthetic appeal. On the other hand, blocks are preferred for internal construction due to their larger size and faster laying process. Their heaviness, however, can make them more challenging to work with, but this can be offset by their cost savings and speed of installation.

While brickwork may look more aesthetically appealing, blockwork can be quicker and more cost-effective. The ratio of brick to block can vary, with about 60 bricks per m2 and only 10 blocks per m2 needed for blockwork.

Conclusion

In summary, bricks and blocks serve distinct purposes in construction, and the choice between the two often depends on the specific requirements of the project. For quicker, more cost-effective construction, blocks are an excellent choice, especially for internal work. However, for external work where aesthetics are a priority, bricks may be the better option.

Understanding the differences between bricks and blocks is essential for any construction professional or homeowner looking to build or renovate a property. By making an informed decision based on the specific needs of the project, builders can save time and money while achieving the desired outcome.