Apply Concrete Hardener with a low-pressure sprayer or scrubber at approximately 4m2 – 6m2 per ltr (porosity dependent). Dry shakes are divided into three basic groups according to the type of aggregate that they contain: It should be noted that the greatest and most typical application of concrete anti-wear powder is in areas where the concrete is exposed. This is due to the fact that concrete in such constructions is more susceptible to environmental degradation, including both physical and chemical damage.

In terms of how much of either you should add to a concrete mix, a good rule of thumb is 50/50 mix between PVA or SBR e.g. 50% water, 50% PVA or SBR. Dustproofers Also, yes! Hard-Cem is fully compatible with air-entrained concrete. Hard-Cem is not harmful to the air-void system. And air-entrained concrete treated with Hard-Cem remains highly durable to freeze-thaw cycles and salt scaling. Is There Anything It Isn’t Compatible With? Binds together the particles and sealing the surface to form hard impermeable non-dusting concrete and paving. The C-S-H gel fills pores in the floor surface, making the concrete stronger and more resistant to wear.Dry shake hardeners are applied as a dry compound onto the fresh concrete surface, the application is achieved by hand or mechanical application. Hand application is normally completed after the initial set and floating of the concrete. Mechanical application is commonly performed immediately after concrete placement, before the initial set of the concrete has taken place. Outside of extending your concrete’s wear life and raising your concrete’s resistance to abrasion and erosion, Hard-Cem can also increase your concrete’s chipping resistance. In short, it increases your concrete’s performance in terms of durability against physical wear and tear. Liquid hardeners are not new, however, and I am not the only one to have tested them. I cannot ignore the test results that contradict my own. Sadegzadeh and Kettle found that liquid hardeners modestly improved wear resistance, under certain conditions. The manufacturers report even more improvement, at least when talking about their own products. Many facilities, whether an industrial kitchen, a school, or an airport terminal, require particular flooring to be up to code, secure, slip-resistant, and safe. There are various options for meeting these sorts of flooring requirements as well. Safety is a major concern for many commercial properties. Keeping staff and customers from slipping and falling saves time, money, and effort. Most chemical hardeners are also rich in silica in the form of soluble silicates, siliconates and other proprietary, reactive ingredients which, when placed on hardened concrete, chemically react with weak calcium hydroxide and produce a stronger and denser concrete surface.

For a full rundown on the different types of concrete additives and admixtures and how they should be used, read on below. Using Admixtures and Additives in Concrete and Mortar Mixes Ultimately how much you add will depend on the type of additive you are using and the desired effects you are trying to achieve. If you have ever mixed up a batch of concrete, plaster or any other similar mixture you will be well aware that if you are repeating mixes it’s essential that each mix is exactly the same as the last to ensure complete consistency across the job. It is this surface that must resist the wear imposed on it by traffic. After this surface is worn away the concrete floor becomes a candidate for replacement and the depth of penetration past this zone is of little benefit to the owner. The use of chemical hardeners along with shake on aggregate hardeners: More than belt and suspenders. When adding dyes or tones to a mix this is an absolute must as even the slightest change to the volume of dye or colouring added can cause an easily noticeable visual difference in colour or tone between different mixes.

Colour Hardener - Sunbake Clay 25kg

Likewise, with older concrete surfaces, they are subjected to wear and damage that in turn can release dust particles that can easily find their way up through carpets and similar coverings and get into room spaces. Coating older surfaces with a dustproofer can significantly reduce these issues. Thanks to proceeding chemical reaction the rate of water-tightness increases gradually, whereas maximum sealing and hardening effect occurs earliest after 7 days. Gloss of the surface gradually increases during 30 to 90 days depending upon cleaning frequency. Residue could be harmful to children, animals or the environment. Replace lid and dispose of container in accordance with local regulations.