Among various flooring materials, steel fiber reinforced concrete (SFRC) has emerged as the preferred choice for factory floors due to its enhanced edge protection, impact resistance, and dynamic load-bearing capabilities, as well as its ability to simplify construction and reduce costs. By incorporating steel fibers, the construction process is simplified, time and costs are reduced, and the issue of steel corrosion is avoided. This facilitates the use of electric welding steel bars, thereby preventing concrete damage caused by steel corrosion.
1. Advantages of steel fiber reinforced concrete
Enhance efficiency and performance
After adding steel fibers and plasticizers to the mixer, it should be stirred at full speed for 1 to 2 minutes, with the specific time depending on the mixer model. The pouring process of steel fiber reinforced concrete is no different from that of ordinary concrete. In terms of the standard pouring amount, 20 to 50 kilograms are required per cubic meter of steel fiber reinforced concrete. To ensure smooth pouring, the minimum amount of fine materials should be specified. At the same time, to achieve the best pouring effect and fiber integration, the size of the aggregate must meet the following standards:
Construction simplification and cost reduction
The addition of steel fibers significantly enhances the impact resistance and dynamic load-bearing capacity of concrete. Furthermore, the casting of steel fiber reinforced concrete must be conducted in a wind- and rain-proof environment to prevent disturbances from external factors such as wind, rain, and sunlight in the casting area.
Concrete pouring details
Preparation and process for pouring
After adding steel fibers and plasticizers, the concrete must be thoroughly mixed before pouring. Standard dosages and aggregate size requirements must be adhered to ensure the pouring effect. The maximum size of aggregate (mm) is not the maximum dosage during pouring (kg/m²). The maximum dosage during pouring (kg/m²) During the concrete pouring process, extreme caution must be taken to prevent the pouring area from being disturbed by external factors such as wind, rain, and sunlight.
Environment and temperature control
To ensure the desired pouring effect, it is recommended to carry out construction in a building environment with good weather resistance and airtightness. Especially when pouring panels indoors, the temperature should be controlled within the suitable range of 10-30 degrees Celsius. For the pouring of seamless panels, stricter standards and operating procedures need to be followed.
Key points of maintenance and cutting
Advanced maintenance methods
Plastic sheeting or low-solid curing agents are applied to retain moisture in the concrete and prevent premature loss, thereby ensuring the stability and reliability of its performance. It is important to note that adequate curing should be ensured before meteorological conditions may adversely affect the concrete.
Cutting timing and technique
If cutting operations are required, they should be carried out as early as possible, and the specific timing should be determined based on the hydration rate and meteorological conditions. The purpose of this is to pre-set a crack in the panel, thereby releasing the stress generated by concrete hydration shrinkage and temperature changes. The width of the cutting joint should be controlled within the range of 3-4 millimeters, while the cutting depth should be 1/4 to 1/3 of the overall depth of the panel. To ensure the regularity of the cutting joints around the pipe column, it is recommended to use diamond saw blades for operation. When carrying out cutting, precise timing is essential, as it is closely related to the curing rate of concrete (involving hydration reactions and environmental factors).
