Tech Briefs

28 Jul 2022

Colloidal silica reduces water-vapour transmission

By Sheldon White Colloidal silica reduces water-vapour transmission in concrete by between 70% and 80%. This is according to independent laboratory tests that were undertaken to […]
20 Jul 2022

Colloidal silica and polished concrete

By Sheldon White Colloidal silica post-placement pozzolan technology can benefit polished concrete in many ways. Polishing entails removing the upper paste portion of the concrete surface […]
6 Jul 2022

Colloidal silica improves coatings

By Sheldon White Colloidal silica post-placement pozzolan technology fills capillary voids by reacting with calcium hydroxide found in concrete to form Calcium Silicate Hydrate (C-S-H). In […]
30 Jun 2022

Colloidal silica and bond breakers

By Sheldon White Colloidal silica post-placement pozzolan technology is not a bond breaker. Colloidal silica post-placement pozzolan technology penetrates concrete and does not change its surface. […]
8 Jun 2022

Concrete abrasion resistance and SCP

By Sheldon White Concrete abrasion resistance is an important consideration for certain structures. These include those that carry continuous vehicle traffic or that are subject to […]
1 Jun 2022

Concrete curing versus drying

By Sheldon White Concrete curing differs to drying. Yet, the two terms are often incorrectly used interchangeably, especially when referring to concrete slabs that will receive […]
17 May 2022

Colloidal silica versus vapour retarders

By Sheldon White Colloidal silica post-placement pozzolan technology differs from vapour retarders or barriers. In this article, we will explain the difference between colloidal silica post-placement […]
17 May 2022

Water vapour transmission versus condensation

By Carl White Water vapour transmission and condensation look similar. In both instances, water collects on the surface of the concrete. However, it is important to […]
1 May 2022

Colloidal Silica-based SCP Technology versus Common Topically Applied Silicates

Carl White, Managing Director of SprayLock Africa, explains the difference between SCP technologies and typical applied silicates. Studies have demonstrated that even a small addition of […]
8 Apr 2022

Chloride Mitigation in Reinforced Concrete Spray-Lock Concrete Protection (SCP) Improves Reinforced Concrete Strength and Durability by combating corrosion of reinforcing steel in many ways

Cutting-edge Spray-Lock Concrete Protection’s SCP technology has been used on many projects in South Africa and in other countries on the continent to enhance concrete strength […]