H-503 Corrosion-Inhibiting Admixture

H-503 Corrosion-Inhibiting Admixture can extend the time to corrosion initiation and reduce the corrosion rate of embedded metal, which has caused great damage to many concrete structures , seriously damaged the service performance of buildings, reduced the service life, and greatly increased the maintenance and repair costs.

General Feature Performance

GENERAL

Corrosion has caused great damage to many concrete structures, seriously damaged the service performance of buildings, reduced the service life, and greatly increased the maintenance and repair costs. Groundwater is rich in harmful impurities such as sulfate, magnesium and chloride ions. Their interaction mainly exists in three forms: E salt erosion of calcium vanadium stone, G salt erosion of gypsum and M salt erosion of cement hydration products decomposed by Mg2+. Concrete preservatives can improve the construction efficiency, prevent and reduce the harm of corrosion. It is widely applicable to saline land areas, salt lakes, coastal salt farms, coastal ports, seawater infiltration areas and other adverse geological areas and marine waters all over the country.

FEATURE

By adding corrosion-resistance agent, the concentration of SO42- ions invading into concrete can be effectively reduced, the pores can be refined, the expansion damage can be restrained, and the speed of sulfate corrosion damage of concrete can be delayed, so as to improve the durability of concrete.

It has outstanding effect in preventing corrosion damage of concrete and improving the early strength of concrete.

Increase the compactness of the concrete and improve the impermeability grade of the concrete

The concrete enhances the ability to resist the corrosion damage of magnesium ions

Improve the frost resistance of concrete

PERFORMANCE

JC/T1011-2006 Environmental corrosion-resistance admixtures for concrete

Item		Index
Sulfate-resistance	Coefficient of expansion (E)	≤1.50
Sulfate-resistance	Coefficient of corrosion coefficient (K)	≥ 0.85
Performance after mixing concrete	Initial setting time/min	≥ 45
	Final setting time/h	≤10
	Compressive strength ratio /% (7d)	≥ 90
	Compressive strength ratio /% (28d)	≥100
	Expansion rate /% (1d)	≥0.05
	Expansion rate /% (28d)	≤0.60
Recommended mixing amount(Amount of cementitious material per cubic meter of concrete%)	Slightly corrosive environment	1.5-3
	Severe corrosive environment	3-5

Scope of application

◆Industrial and civil construction projects that are often eroded by corrosive media ◆Industrial and civil construction projects that are easily eroded by corrosive media in saline alkali areas.

◆It is used for the construction of underground pipelines and embedded metal parts and the repair and reinforcement of reinforced concrete structures that have been damaged by corrosion.

◆Structures subject to sulfate erode.

Construction process

◆This product can be added according to different construction requirements. When adding, the mixing time of concrete shall be appropriately extended.

◆It is suitable for general cement, special cement and mineral admixtures such as fly ash, slag powder and silica fume, and has good compatibility with common water reducing agents.

◆For concrete works added with this product, mix proportion test must be conducted in advance.

◆This product can play a more effective role in high-quality concrete. It must comply with relevant specifications and design regulations to ensure the quality and compactness of concrete.

◆Concrete adaptation shall be made before construction. If it has a certain impact on slump loss or setting time, it can be solved by adjusting the content of retarder or water reducer.

◆This product has good compatibility with common water reducing agent, but it should not be mixed with acid water reducing agent.

◆Operators should wear necessary protective measures such as masks and gloves. Waste materials and waste liquid shall not be discarded at will.

Packaging and storage

◆Packed in PP kraft paper bag, with a net weight of 25kg / bag and a shelf life of 12 months.

◆It must be stored in a dry and ventilated room, and the packaging bag shall be sealed. Avoid moisture and freeze.