Heplex blocks, like other building materials, have the ability to absorb moisture and water. It is interesting to know that if there is moisture in AAC blocks, the color of these materials changes; but this color change does not mean a decrease in their quality and performance. In this article titled “Heplex block water absorption rate”, we will take an in-depth look at how much water Heplex blocks https://ekaadsaze.com/بلوک-هبلکس-چیست/ can absorb.
What is the water absorption rate of Heplex block?
Before discussing the water absorption of Heplex blocks, it is important to note that this amount varies between approximately 5 and 10 percent in ordinary building blocks, and again depends on the type of block and its quality. For Heplex blocks in normal and stable conditions, this amount is approximately 5 percent, and in areas with high humidity, it can increase to 50 percent.
But the important point is that moisture does not penetrate more than 3.5 cm into the depth of the block. In addition to resisting water penetration, the Heplex block acts as a good insulator against cold and in relatively cold weather conditions it can largely eliminate the need for insulation and make you comfortable. For this reason, these materials are known as one of the most popular options among builders and employers.
In areas with high humidity, such as the north of the country, the use of Heplex blocks is extremely common due to its insulating properties and resistance to moisture, and in a way, its use is very rational; this feature also prevents the growth of harmful fungi. All these advantages have led to Heplex blocks gradually replacing cement blocks and people are less likely to use traditional blocks.
Other features of these blocks include the ability to absorb water up to 50%. It is noteworthy that moisture does not penetrate to a depth of 3.5 cm and as the ambient humidity decreases, the moisture content in the autoclaved block also naturally decreases. Under normal conditions, the moisture content is about 5%, but the Heplex block insulates much more. If lightweight block adhesive is not used to connect the AAC blocks, a sand-blasted mortar or cement mortar with a ratio of 1:5 and a small amount of lime can be used to reduce water absorption in the AAC mortar.
Other benefits of Heplex blocks
In addition to being water resistant, the Heplex block has many advantages, one of the most important of which is its thermal insulation. This feature reduces the possibility of fire spreading to other parts of the building in the event of a fire in one of the rooms. Also, the thermal insulation of Heplex reduces energy consumption in cooling and heating the building. Another advantage of these blocks is that insects cannot penetrate the structure from inside, which is a very important point for some employers. The light weight of these blocks allows them to be used in all stages of construction.
Waterproof Heplex Block Glue
The proprietary Heplex block adhesive is also known as a water-resistant product and can effectively reduce water absorption and liquid penetration. Using this adhesive not only provides greater security in block joints, but also prevents problems such as sudden separation of blocks when exposed to water.
Materials used in the production of Heplex blocks
Heplex blocks or AAC blocks https://ekaadsaze.com/بلوک-اتوکلاو-شده/ are produced from a combination of various materials such as cement, water, sand and gravel, which affect their water absorption rate. In the production process of these blocks, cement is used as an important material for the strength of the blocks, while sand is used as a filler to give the blocks the necessary hardness and durability. Some manufacturers may add various materials such as paraffin oils or lime powder to the mixture to improve certain properties such as water and heat resistance. Heplex blocks are mainly used for the construction of internal and external walls of buildings and partition walls.
Can water absorption of Heplex block cause problems in finishing?
A misconception about lightweight blocks is that due to their lightness, it is not possible to do finishing work on them. To refute this notion, it should be noted that autoclaved blocks are connected (glued) to each other using special Heplex mortar, and this connection provides resistance to any finishing work. Plastering on Heplex, which is done to beautify the outer surface of a concrete wall, is done at a low cost and without the need for plaster mortar and soil.
Although the water absorption of Heplex blocks is very good and suitable and it absorbs water to a large extent, the application of mortar or the use of special Heplex adhesives in them is easy and takes a short time. In areas with high humidity, these blocks are more useful than other building materials due to their ability to prevent water leakage and moisture.
Finishing work on Heplex, which includes plastering, cementing, and installing ceramic tiles, has no restrictions or incompatibilities. It is only necessary to carry out these operations according to the relevant instructions. Also, to achieve a desirable result, it is recommended to proceed with finishing work about 6 weeks after the block wall is installed.
Does water absorption of the Heplex block help make it more durable?
Heplex blocks have a high water absorption capacity, which is why engineers recommend soaking the blocks with water and wetting the entire surface of the block before using them. This soaking process before use increases the strength of the block. Also, because silica is the basis of this type of building block, this block is also known as a heat insulator and fire retardant. In addition, soaking autoclaved blocks before use can help improve their heat resistance.
Since the Heplex block retains a lot of moisture after the wall is built due to its high water absorption rate, it is not possible to plaster directly on a wall that has just been built from Heplex block. If this is done, the plaster may crack due to the high humidity of the wall. To prevent this situation, it is recommended to first cover the entire wall with a metal mesh and then carry out the plastering process; this will prevent you from seeing cracks in the wall after the plaster dries.