Concrete voids are often the result of entrapped air bubbles that have failed to rise to the surface of a slab or formwork. These voids can significantly weaken a concrete structure, so preventing or repairing these issues before they escalate is important.
Cause
Surface voids and defects are most common in low water-cement ratio concretes and vertical concrete surfaces. One of the main causes of bug holes in concrete is improper vibration. Generally, the vigorous shaking of the vibration process removes air pockets and increases density and structure in the concrete, but when done incorrectly, air bubbles are entrapped under the surface.
Solution
Master Builders Solutions effectively eliminates surface voids and defects in off-form concrete with their ready-to-use, water-based admixture. This admixture possesses excellent form-release properties and is suitable for wood, metal, polyester, and cement. This not only reduces surface voids and defects but also improves the overall durability of the concrete structure.
Additionally, MasterEmaco N 5100, a concrete-grey coloured mortar, provides an excellent solution for repairing surface voids. The formula is based on hydraulic binders and high-grade quartz sands that have been modified with synthetic polymers, allowing for strong adhesion, quick application, and long-term durability. MasterEmaco N 5100 contains no chlorides or other salts that may cause corrosion or efflorescence (blooming).
Benefits
Prevention of Surface Voids: The admixture helps prevent the formation of surface voids during the initial concrete pouring and curing process.
Enhanced Durability: Improves the overall durability and longevity of the concrete structure.
Easy Application: MasterEmaco N 5100 allows for quick and easy repair of existing surface voids.
No Corrosion Risk: Contains no chlorides or other salts, preventing potential corrosion or efflorescence.