How do you do Topcast concrete?
What is acid wash concrete? Acid washing is the process of removing the top layer off a concrete surface to open its pores and provide a clean slate for a coating. Read on to learn about acid washing (also called acid etching) and whether it is the appropriate treatment for your project.
What is Topcast concrete finish? TOP-CAST is a water-based, top-surface retarder which does not require covering with plastic for protection. It is available in 12 depths of etch, each one color and number coded for safety and convenience.
How do you apply Topcast?
How do you do Topcast concrete? – Related Questions
What is top cast used for?
With TOP-CAST®, it’s possible to achieve an architectural finish with an exposed aggregate look. Our product is more than just a surface retarder — it’s a surface retarder that’s optimized for robust, consistent performance in all temperature and weather conditions.
How do you remove retarder from concrete?
Once the concrete is ready, remove the surface paste with a garden hose, a stiff broom, or a pressure washer. Tip: Before applying a surface retarder, be sure you will be able to remove it within 24 hours. If you allow the surface to harden longer, aggregate exposure will become difficult and may require sandblasting.
What are the different types of concrete finishes?
8 Types of Concrete Finishes [PDF]
- Troweled Finish.
- Broom Finish.
- Stamped Concrete Finish.
- Salt Finish.
- Exposed Aggregate Finish.
- Swirl Finish.
- Polished Finish.
- Colored Finish.
How do you finish rock salt on concrete?
Salt finish concrete surface is obtained by inserting coarse rock salt crystals using rollers on the freshly placed concrete surface and washing it off with streams of water after the concrete is set. This procedure gives a rough subtle texture and skid resistance to plain or coloured concrete.
What is broom finish concrete?
Broom Finish concrete is concrete finished by dragging a horsehair broom, or something similar, over its wet surface. Brushing the concrete makes for a textured surface with small, but noticeable grooves. Broom Finish concrete has been the preferred utilitarian texture for exterior concrete for decades.
How do you expose aggregate in old concrete?
Brushing and washingThis is the oldest method and the simplest because it doesn’t require chemical retarders or special tools. You just wash away the thin layer of surface mortar covering the aggregate by spraying with water and scrubbing with a broom until the aggregate is exposed to the desired depth.
What is a concrete retarder?
Retarders for concrete are used to delay the initial setting time of the concrete upto an hour. They are generally used in the hot weather condition to counter the rapid hardening due to high temperature, thus allowing the time for mixing, transporting and placing. Retarders also acts as water reducers.
What is a sand finish on concrete?
“Sand finish” concrete is exactly what it sounds like – A sand-textured decorative flatwork option. Sand finish concrete creates a non-slip surface, perfect for parks, entryways, plazas, etc…
What is the green spray on concrete?
Prime Exposure surface retarder is a water based retarder designed specifically for exposing the aggregate in horizontal concrete surfaces. The signature, fluoro green pigment is easy to see and ensures even coverage, reducing missed or non covered areas.
How much retarder do I need for concrete?
DIRECTIONS FOR USE. 3 fl oz/100 lbs (196 mL/100 kg) of cement will extend the initial setting time of portland cement concrete by approximately 2 to 3 hours at 70 °F (21 °C). For longer setting times or in higher temperatures, additional retarder may be needed. For shorter set times or in cooler weather, use less.
What is concrete retarder made of?
Set retarder refers to the admixture that can delay the setting time of concrete mixing materials, and have no bad impact on the development of concrete’s latter strength. It often contains lignosulfonate, carbohydrate, inorganic salts and organic acids.
