Prefabricated House Cement Beam

The prefabricated house cement beam usually refers to the cement lintel, also known as the prefabricated lintel plate, which is a horizontal load-bearing component used above door and window openings in buildings. The following is an introduction from the aspects of definition, structure, brand, specifications, and appearance:

Definition and Function

The prefabricated house cement beam is an indispensable part of the building structure, mainly used above door and window openings and passageways. Its core function is to bear the loads transmitted from the upper structure of the opening, such as the self-weight of the floor slab and walls or live loads (e.g., people, furniture, etc.), and evenly distribute these loads to the walls on both sides of the opening, preventing local stress concentration that could lead to wall cracking or structural instability. This design not only ensures the safety of the building but also simplifies the on-site construction process.

Structure and Materials

The prefabricated cement beam is usually made of a composite of cement and steel bars. Cement serves as the base material, providing compressive strength and durability; steel bars are embedded inside the cement to form a steel bar framework, significantly enhancing the component's tensile and bending resistance. This composite structure enables the cement beam to resist both pressure and tension, meeting the load-bearing requirements of buildings.

Brands and Types

There are multiple brands of prefabricated cement beams on the market, such as Feihong, Chenggou, Heyuda, etc. Different brands may have differences in production processes, quality control, and product performance. Users can choose appropriate products based on project requirements, budget, and brand reputation.

Specifications

The specifications of prefabricated cement beams are diverse, mainly reflected in differences in compressive strength and dimensions:

• Compressive strength: Common specifications include 1.8MPa, 10MPa, 60MPa, 400MPa, 1860MPa, etc. The choice of strength depends on the span of the opening, the magnitude of the load, and design requirements. For example, a lower strength (e.g., 10MPa) may be used for small-span door and window openings, while higher strength (e.g., 60MPa and above) is required for large-span or heavy-load scenarios.
• Dimensions: Usually rectangular or plate-shaped, the specific length, width, and thickness need to be customized according to the size of the opening to ensure complete coverage of the opening and sufficient anchorage length.

Appearance and Construction

The appearance of the prefabricated cement beam is usually smooth and aesthetically pleasing, with the surface treated to reduce cement shrinkage cracks and enhance durability. During construction, the cement beam needs to be accurately placed above the opening and reliably connected to the walls on both sides through steel bars (e.g., embedded steel bars, welding, or binding) to ensure a clear load transfer path. In addition, the contact surface between the cement beam and the wall should be flat to avoid local stress concentration.