A curing compound is a liquid solution that is applied to freshly placed concrete as a surface coating. Curing compounds are used to reduce the loss of water or heat in order to establish perfect conditions for the creation of concrete.
1. Benefits of the curing compound
- Significantly reduces drying shrinkage cracks
- increased durability
- Free of toxins and biodegradable
- UV rays are reflected by this material.
- One-time application: lower labor costs
- Best for water-stressed areas
- Water loss is reduced.
- Environmentally conscious
2. Where to use
- Suitable for use on all concrete surfaces, including flyovers and bridges, airport aprons, dams, and chimneys. This product is ideal for curing limited concrete repair areas.
- Cure interior and exterior concrete with this product.
- Curing chemicals for highways and curbs
- Compounds for curing median barriers, bridge decks, parking lots, and walkways
- When applying later finishes such as traffic deck membranes, stains/dyes, or penetrating sealers.
3. Step by step instructions
- For newly poured concrete Apply curing compound via spray as soon as the initial surface shine has faded, which is usually 2 hours after placement.
- In the case of a vertical surface After de-shuttering, immediately hose the concrete surface with clean water to eliminate any remnants of shuttering oil. Curing chemical should be sprayed on as soon as the formwork is removed.
- When the curing compound membrane is formed, it will remain on the concrete surface until it deteriorates. The pace of disintegration is affected by several parameters, including coating thickness, degree of exposure to weathering and UV light, foot traffic, and substrate porosity.
Do not use if the ambient and concrete surface temperatures are less than 5°C or if rain is forecast within 12 hours of treatment. For proper dissipation, curing compound must be left open and unprotected after application.
Precaution needs to take.
- Allow for enough ventilation and avoid contact with the material’s eyes, nasal passages, mouth, and unprotected skin.
- Wear protective gloves and, if necessary, an appropriate barrier cream to avoid contact with the hands.
- If contact occurs with the eyes, rinse immediately with lots of water and seek medical attention; if contact occurs with the skin, wash immediately with plenty of soap and water.
- Prolonged skin contact should be avoided. Always use gloves and eye/face protection as needed. Maintain personal hygiene, including washing hands after finishing work or during any interruptions while work is in process.
- To avoid contamination, take care when removing gloves.
- Clean the spray equipment with fresh water immediately after use. If the nozzle becomes clogged with wax particles, it can be cleaned with white spirit or a similar solution.
6. Types of the curing compound
- Compound made of synthetic resin
- The acrylic compound
- Wax compound
- Chlorinated rubber compound
7. Testing methods of curing compound
The curing compound should be subjected to the following ASTM tests:
- Water retention – The test must be carried out in line with test method C 156.
- Reflectance – Determine the daytime reflectance of a white-pigmented substance using test method E 97.
- Drying time – The test should be carried out in accordance with ASTM C 309 clause 10.3.
- Long-term configuration – For routine testing, use test method D 1309. In the event of a dispute, utilize technique D 869.
- Nonvolatility content – Test using test method D 1644 method 4.
- Concrete curing compound will effectively stop water from evaporating from the concrete as long as it is not broken or punctured, but it will not permit water to enter to replace water lost to self-desiccation.
- Since wet curing is typically only performed sporadically at building sites, curing compounds may actually produce better outcomes.
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