17 Aug 2023

Colloidal silica increases concrete strength

By Carl White Colloidal silica post-placement pozzolan (P3) reacts with Calcium Hydroxide (CH) to form secondary Calcium Silicate Hydroxide (CSH). This increases concrete strength and reduces […]
20 Jun 2023

Colloidal silica and silicate salts

In this article, Carl White discusses the difference between colloidal silica post-placement pozzolan (P3) and silicate salt admixtures. Silicate salt admixtures generally consist of sodium, potassium […]
25 May 2023

Colloidal silica improves concrete structural integrity

By Carl White SprayLock Concrete Protection’s (SCP) colloidal silica post-placement pozzolan (P3) technology improves concrete structural integrity. Design professionals need to know that concrete will perform […]
13 Apr 2023

Colloidal silica reduces reinforcing steel corrosion

By Carl White United States-based Spray-Lock Concrete Protection’s colloidal silica post-placement pozzolan technology reduces reinforcing steel corrosion in concrete. Reinforced concrete remains one of the most […]
6 Dec 2022

Colloidal silica reduces drying shrinkage

By Carl White Our colloidal silica post-placement pozzolan technology reduces drying shrinkage. One of the challenges associated with concrete is that it shrinks, a change in […]
25 Nov 2022

Colloidal silica a superior curing medium

By Carl White Colloidal silica post-placement pozzolan technology is often used as a superior curing medium. Testing has shown that SCP treatments are comparable to or […]
10 Nov 2022

Colloidal silica maximises concrete performance

By Carl White The microstructure of cement paste as it hydrates. Notice the growth of C-S-H on the cement minerals over time. The blue is C2S, […]
26 Oct 2022

Colloidal silica reduces water vapour transmission

By Sheldon White Our colloidal silica post-placement pozzolan technology reduces moisture vapour transmission to levels that are low enough for most moisture-sensitive flooring materials according to […]
19 Oct 2022

Colloidal silica used with any flooring

By Sheldon White Colloidal silica post-placement pozzolan technology can be used with any flooring coverings and adhesives that are to be placed over concrete. It does […]
31 Aug 2022

Colloidal silica and corrosion inhibitors

By Carl White Colloidal silica post-placement pozzolan technology differs to commonly available materials that are marketed as corrosion inhibitors. Our technologies consist of post-initial set applied […]
17 Aug 2022

Colloidal silica versus conventional silicates

By Sheldon White Our colloidal silica post-placement pozzolan technology differs in form and function from topically applied silicates. Extensive research has demonstrated the differences between colloidal […]
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 […]