You can apply waterproofing and drainage solutions both during new construction and renovations. Common waterproofing methods include the application of large layers, which are thin cement-based products, rubber membranes, waterproofing paint or asphalt-based waterproofing compounds. Standard (high-density) concrete blocks are made of cast concrete: Portland cement, sand and gravel. Compared to typical structural concrete, they are made with a higher percentage of sand and a lower percentage of gravel and water for a stiffer mix that maintains its shape when removed from the block mold.
The typical high-density concrete block (8 x 8 x 16 inches with two cores) weighs between 36 and 42 pounds. There are builders who prefer concrete blocks because it is much easier to work with them. Compared to a heavy concrete block, a typical concrete block weighs only 26 to 33 pounds. However, concrete blocks are more subject to problems of moisture, water seepage, radon gas, salt deposits and efflorescence (white powder residues) due to their high porosity.
That is why they are usually used in interior construction without moisture or outdoors for barrier walls, hard landscapes and fences. A concrete block is much more porous compared to a standard concrete block or poured concrete. Concrete blocks are classified as permeable to water and water vapor (+10 permanent). Heavy concrete blocks are semi-permeable (5 permanent) and less when the hollow cores are filled and packed with a concrete slurry mixture (approximately 2 permanent).
Compared to blocks, freshly poured concrete foundation walls (8-10 thick) of good quality are impermeable to water (0.4-0.3 permanent). The key to maintaining a brick or block wall is to routinely check the mortar joints of the wall. Smooth, crumbling mortar joints let water in and cause serious damage to the wall. Faulty mortar joints require mortar to be removed and replaced.
Are you worried about damp and wet walls or water in your basement or access space? Is it time to waterproof the walls of concrete blocks? Water is one of our most precious and valuable resources. It is also an incredible force of nature that can break down almost anything in its path. To repair badly damaged areas on concrete block walls, you will need to use a capping chisel and sled to chip the damaged concrete block. Concrete blocks and concrete blocks, as well as split-faced blocks and lightweight blocks, are called CMU (Concrete Masonry Units).
Years of continuous water filtration will enlarge the pores of the blocks, holes will begin to develop and leak water, and the efflorescence will become loose and seep from the inside of the concrete. Gerber specializes in providing brick and stone laying services, concrete installations and masonry repairs. Cracks of the ash-block foundations in the basement walls are usually observed in the mortar joints joining the blocks; however, sometimes there are cracks in the blocks themselves. Extensive water filtration can transport soil and sediment through concrete and begin to plug pores in blocks, making it difficult for RadonSeal Plus and Ion-Bond Armor elastomeric concrete sealant to properly waterproof the substrate.
Concrete blocks use industrial waste, such as fly ash or bottom ash, as aggregate instead of the sand or fine gravel used to make real concrete. Clogged pores in the blocks can prevent RadonSeal and Ion-Bond Armor from penetrating and reacting inside the concrete. There are many different types of concrete blocks that vary widely depending on composition, additives, region and manufacturer. If you take the time to re-aim, you can have a safe cinder block wall for decades and save yourself a lot of trouble in the long run.
Sealing concrete blocks will extend their service life by protecting them against water - the main enemy of concrete. As long as you work with concrete blocks, you can significantly strengthen them by filling them with concrete. Even before you reach that stage, there can be many telltale signs that there are deeper problems with water and concrete blocks. .