BC-YJ(I) Prestressed Concrete Duct Grouting Material

Brief Introduction

BC-YJ(I) prestressed concrete duct grouting material is a cement-based composite material optimally compounded mainly from inorganic materials such as cement and expansive components, combined with organic polymer functional materials. It features high plastic retention, zero bleeding, micro-expansion, high durability and non-corrosiveness. It is applicable to various duct grouting projects, especially post-tensioned prestressed concrete duct grouting for large-scale projects such as highways and bridges.

Product Features

· Simple Operation: BC-YJ(I) can be used directly after mixing with water.

· High Plastic Retention: The fluidity of the grouting material after mixing with water remains basically unchanged within 60 minutes, fully meeting the requirements of grouting construction.

· Zero Bleeding: The free bleeding rate of the grouting material after mixing with water is 0, which effectively avoids sedimentation and separation, enhances interfacial bonding, and improves the protection of hardened paste on prestressed steel bars.

· High Durability: The hardened paste has a dense pore structure, which can effectively prevent the intrusion of external harmful media and ensure excellent durability.

· Non-Corrosive: The product is non-toxic and non-radioactive, and contains no substances that cause steel bar corrosion.

Technical Data

The following data represent typical properties of this product and may be slightly adjusted based on specific customer requirements.(Reference Standard: JTG/T 3650-2020 Technical Specifications for Construction of Highway Bridges and Culverts)

Usage Method and Precautions

· Mix Proportion: BC-YJ(I) only needs to be mixed with water for use. The recommended water-binder ratio (water/BC-YJ(I)) is 0.28, and the optimal proportion shall be determined through trial mixing according to the on-site mixing process. If other components need to be added, strict tests must be conducted.

· Mixing: A high-speed mixer with a rotation speed of not less than 1000r/min shall be used to ensure sufficient mixing intensity. The mixing time shall be appropriately extended until all components of the grouting material are fully and uniformly dispersed.

Packaging and Storage

· Packaging: Available in valve bags or bulk. The net weight is 40kg per bag, ensuring convenient loading, unloading and transportation.

· Storage: It shall be stored in a dry and cool place with a shelf life of 6 months.

Safety Precautions

For your personal safety, always wear protective gloves and safety goggles during handling and use to avoid direct skin contact. In case of accidental eye or skin contact, rinse immediately with plenty of clean water. Seek medical attention promptly if irritation persists.