Sodium-based bentonite waterproof blanket manufacturers highlight common issues in waterproof engineering:
At Shuimu Engineering Materials Co., Ltd., we specialize in the production of sodium-based bentonite waterproof blankets and have gained extensive experience in construction. Today, we’re sharing some of the key challenges that often arise during waterproofing projects:
There is no universal definition for waterproof materials, as the constant evolution of waterproofing technology has led to a wide variety of options available today. In general, these materials are designed to prevent water intrusion from rain, groundwater, industrial and civil drainage systems, corrosive liquids, and moisture or vapor in the air. All such materials that protect structures from water infiltration are collectively known as waterproofing materials.
Common problems in waterproof engineering include high moisture levels in basement substrates. Waterproof membranes typically require a moisture content of no more than 9%, but in many cases, the moisture level on the base surface of basements can exceed 30%, with some areas reaching up to 80-90%—especially in trenches. Under these conditions, the success rate of traditional waterproof membrane installation is nearly zero. To address this, inorganic waterproof coatings can be used, which can be applied on surfaces with over 95% moisture content. Alternatively, a hybrid approach using both inorganic coatings and cement-based polymer flexible coatings may be employed.
Another misconception is that a 1-meter thick basement floor doesn’t need waterproofing. However, concrete thickness alone does not guarantee waterproofing. While concrete can act as a barrier, it cannot fully prevent seepage. Concrete is made from cement and aggregates, and during hydration, cement requires about 25-27% water. However, to achieve workability during mixing, up to 40-50% water is typically added. Once the hydration process is complete, the excess water evaporates, leaving behind capillary channels that allow water to penetrate.
Some people believe that self-waterproofing structures can replace traditional waterproof systems. This involves adding expansion agents like UEA or AEA to the concrete mix, which generate expansion stress to counteract shrinkage during hydration. However, this method comes with three strict requirements:
1. The additive must be evenly distributed throughout the concrete.
2. Due to its low dosage, the concrete mixture must not be too thin.
3. The additive is highly sensitive to moisture. If exposed to moisture, it begins to expand prematurely, which can lead to structural damage.
These conditions are extremely difficult to meet in large-scale construction. For example, when adding 8% of the additive by weight of cement, achieving uniform distribution in large batches is nearly impossible. Poor mixing can result in uneven expansion, leading to cracks at stress points. Additionally, if the concrete is too wet, the additive may float and expand in the upper layers, reducing its effectiveness.
At Shuimu Engineering Materials Co., Ltd., we specialize in the production of sodium-based bentonite waterproof blankets and have gained extensive experience in construction. Today, we’re sharing some of the key challenges that often arise during waterproofing projects:
There is no universal definition for waterproof materials, as the constant evolution of waterproofing technology has led to a wide variety of options available today. In general, these materials are designed to prevent water intrusion from rain, groundwater, industrial and civil drainage systems, corrosive liquids, and moisture or vapor in the air. All such materials that protect structures from water infiltration are collectively known as waterproofing materials.
Common problems in waterproof engineering include high moisture levels in basement substrates. Waterproof membranes typically require a moisture content of no more than 9%, but in many cases, the moisture level on the base surface of basements can exceed 30%, with some areas reaching up to 80-90%—especially in trenches. Under these conditions, the success rate of traditional waterproof membrane installation is nearly zero. To address this, inorganic waterproof coatings can be used, which can be applied on surfaces with over 95% moisture content. Alternatively, a hybrid approach using both inorganic coatings and cement-based polymer flexible coatings may be employed.
Another misconception is that a 1-meter thick basement floor doesn’t need waterproofing. However, concrete thickness alone does not guarantee waterproofing. While concrete can act as a barrier, it cannot fully prevent seepage. Concrete is made from cement and aggregates, and during hydration, cement requires about 25-27% water. However, to achieve workability during mixing, up to 40-50% water is typically added. Once the hydration process is complete, the excess water evaporates, leaving behind capillary channels that allow water to penetrate.
Some people believe that self-waterproofing structures can replace traditional waterproof systems. This involves adding expansion agents like UEA or AEA to the concrete mix, which generate expansion stress to counteract shrinkage during hydration. However, this method comes with three strict requirements:
1. The additive must be evenly distributed throughout the concrete.
2. Due to its low dosage, the concrete mixture must not be too thin.
3. The additive is highly sensitive to moisture. If exposed to moisture, it begins to expand prematurely, which can lead to structural damage.
These conditions are extremely difficult to meet in large-scale construction. For example, when adding 8% of the additive by weight of cement, achieving uniform distribution in large batches is nearly impossible. Poor mixing can result in uneven expansion, leading to cracks at stress points. Additionally, if the concrete is too wet, the additive may float and expand in the upper layers, reducing its effectiveness.
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