Over the years, in many areas of the world, we have exhausted building sites with good drainage patterns inherent in high-ground topography. As a result, the only convenient and currently available sites are located in low-lying areas in or near swaps, flood plains, along rivers, and lakes, etc. These areas, with higher water tables and their concomitant water pressures also present the possibility of even higher water heads as nearby development proceeds. In addition, water levels are rising in many lakes and rivers. Many of these now available sites have the additional problems of contaminants known to adversely affect concretes and concrete masonry units.
Waterproofing is required at below-grade concrete surfaces for several reasons. The primary reason is to keep moisture from intruding into the facility. However, it is also required to protect the structural contents from water infiltration that can cause structural damage to the concrete or corrosion to the imbedded steel. Concrete is, by design, a porous material, and water can pass through it by hydrostatic pressure, water vapor gradient or capillary action. Water can also enter at cracks, structural defects or at improperly designed or installed joints. Waterproofing is also required to eliminate deterioration to the concrete that can occur from exterior and interior chemicals that are present at the building site.
You have 0 complimentary articles left.
Why Sign Up?
Expert Education: Access fundamental educational content that helps you stay ahead in your field.
Technical Articles: Benefit from in-depth technical articles that cover a wide range of topics, including building codes, specifications, and innovative building products.
Comprehensive Coverage: Explore a variety of content formats, including webinars, articles, and videos, to suit your learning preferences.