Products

Sea Vapor Resistant Concrete CPAC

Details
Revolutionizing the concept of concrete for coastal works With the properties of concrete that are specially developed for coastal works, it can resist the penetration of chloride and sulfate, which are found in seawater, sea vapor, brackish water, groundwater and saline soil. It has been designed to be in accordance with the standard materials and construction requirements for concrete structures (Engineering Institute of Thailand). Both chloride and sulfate will have a negative effect on the structure, especially in areas that are 0-15 kilometers from the coast. From research, it was found that the distance of concrete structures from the coast affects the damage to the concrete. Within 5 kilometers, concrete will be damaged quickly and severely. And the damage will occur more slowly when the distance from the coast is greater. But the damage is still within 15 kilometers. Therefore, the damage can be divided into 2 levels: severe and moderate.

Chloride will accelerate the rust reaction of the reinforcing steel, causing rust to occur faster. While sulfate will react with concrete, causing the concrete to deteriorate faster and have less strength.

Suitable for the following types of work:
Structures located 5-15 kilometers from the coast (moderate damage)

Properties
Resistance to chloride and sulfate penetration, can resist chloride penetration up to a concentration of 1,000 - 10,000 ppm and sulfate resistance up to a concentration of 150-1,500 ppm
Instructions for use and precautions
Water should not be added to make the concrete more liquid, as this will cause the concrete properties to be different from those designed.
The concrete should be properly vibrated according to the standard requirements for materials and construction for concrete structures (Engineering Institute of Thailand) to prevent cavities in the concrete and increase the strength and durability of the concrete.
Concrete curing should be done immediately after the concrete begins to set continuously for at least 7 days, which can be done in several ways, such as water retention, concrete curing chemicals, covering with wet sacks and watering to keep it moist at all times, or spraying with clean water to keep it moist at all times, or according to the standard requirements for materials and construction for concrete structures (Engineering Institute of Thailand).
Structures and buildings or special buildings that may require other appropriate curing methods in addition to this method