Paver blocks are one of the most commonly used materials for decorating the front yard, driveways, patios in both residential areas and commercial areas. These materials are known for their advantages in terms of cost, durability and strength. We all know that the paver blocks are made from high quality moulds.
So, we all know that paver blocks are very strong, but have you ever wondered how their features such as strength, durability, etc are ensured?
Thorough testing, of course. This is exactly what we are going to talk about in this blog. Keep reading if you want to know what it is.
Importance of Testing
What is the need of testing?
The purpose is to check whether the particular system or process is correctly working without any apparent defects. However, in the case of paver blocks, they have to undergo testing to know if they are manufactured as per the recommended guidelines and also exhibit the expected properties.
Testing the condition of the paver blocks are important because as mentioned above, these materials are highly demanded, therefore, compromising in its quality will severely impact its usefulness. There are several factors that determine the effective lifetime and strength of the paver blocks. One such factor is using paver block moulds through which the blocks are manufactured.
It is therefore recommended to make sure that you purchase the right mould, particularly rubber moulds if you intend to manufacture paver blocks. Although the paver blocks manufactured from quality moulds are good enough, they have to be tested by undergoing certain procedures. Only if the blocks satisfy the tests, they are considered to be perfect and ready to be sold to customers
How paver blocks are tested?
When it comes to testing of paver block tiles, there are certain test procedures which are performed on the paver blocks. These tests have to be satisfied in order to be considered as perfect paver block. The testing procedures are done as per the IS 156538 (2006). Here we explain about those tests.
In this test, the paver blocks are examined for any visible defects such as cracks, flaking from a distance. If any such blocks are found out with visible defects, they are immediately rejected. For examining the blocks are taken out from a sample and they are laid out on a level floor in any design pattern.
After laying the blocks, they are viewed from a distance of approximately 2 m from each edge of the paved area. The one’s having defects are eliminated. To properly find the defects, the examining is carried out in natural daylight.
Dimensions & Tolerances
When manufacturing paver blocks, it has to satisfy certain dimensions. For calculating the dimensions and tolerance levels for paver blocks, the following tests are conducted which are mentioned in Annex B of the IS 156538 standard.
The minimum block thickness should have a minimum value of 50 mm and maximum value of 120mm. The tests performed are described as follows:
- Determining length, width & thickness
- Determining arris of specimen
- Plan area and wearing face area
- Deviation from sqaureness test
In the water absorption test, the blocks are initially immersed in water at room temperature, for a period of 24 hours. After that, the paver blocks are taken out and are left to drain for one minute.
After the draining is done, the weight of the block is recorded. The block is then dried in an oven at a temperature of 107 degrees. After the drying process is completed, the blocks are weighed again. The weight difference when compared must not be more than 6 percent by mass. In the case of individual samples, the water absorption should be restricted to 7 percent.
Compressive strength of paver blocks is determined as per the methods described in Annex D of the IS 15638 standard. Just like finding out dimension and tolerance values, finding the compression strength generally involves a certain number of steps. The paver block strength is defined in terms of 28 days compressive strength.
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This test is used for determining the paver block’s ability to withstand wearing down or rubbing away by means of friction. The method for testing is clearly described in Annex F of the IS 15638.
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How moulds help
So far you have understood about the testing procedures for paver block tiles, that is good, but you should not forget about moulds because these hollow containers are responsible for providing the shape for the paver block. Depending on the lifetime and durability of the moulds, the paver blocks will be effective.
There are different types of moulds such as plastic PVC, rubber etc for producing paver blocks. However, the rubber moulds are generally becoming more demanded due to their sole advantages such as environment friendliness and longer lifetimes when compared with other types. There are many companies that produce rubber mould for paver block manufacturers due to these advantages.
The best manufacturers
When it comes to choosing the right one, JR Rubber industries are the pioneers in developing the perfect rubber moulds for producing paver block moulds for commercial purposes. What makes us different from others is our long running experience in producing high quality rubber mould products.
We have more than 25 years of experience such that we have offered our services to different types of clients all over the world. Our rubber moulds are resistant to various chemicals and acid attacks. Also, since they are not used as aggressively as regular automotive tires, our moulds have unlimited lifespan.
We are the best paving moulds manufacturers and only believe in providing customers the right quality products for the price they pay us and we have never broken that promise and still continue to provide professional services. If you are in the process of purchasing rubber moulds for manufacturing paver blocks, then visit JR Rubbers and choose from our range of products.