Mistakes in Ignoring the Condition of Reinforced Concrete Before Installation

In concrete structural work, rebar is a key element that determines the strength and safety of a building. However, in the field, rebar is often installed without thorough inspection. This mistake of ignoring the condition of rebar before installation may seem trivial, but it can have serious consequences for the quality of the structure.

Here are some important points that are often overlooked.

1. Rust Is Always Considered Safe
Many still assume that all rust on rebar is harmless. In fact:

• Light rust is tolerable.
• Thick and flaking rust reduces the effective cross-section of the rebar.
• The bond between the concrete and the rebar can weaken.

Ignoring this condition risks reducing the structure's load-bearing capacity.

2. Bent Rebar Is Still Insisted on
Rebar that is:

• Bent
• Curved
• Not straight

is often installed, claiming it can be straightened during installation. In fact, this condition can:

• Make reinforcement placement difficult
• Disturb the concrete cover
• Cause suboptimal force distribution

3. Diameter Not Double-Checked
Another common mistake is not checking the diameter before installation. The result is:

• Rebar installed not according to the drawings
• The structure does not meet the design calculations
• The risk of failure increases

Even small diameter differences can have a significant impact on the structure's capacity.

4. Dirty Surfaces and Covered with Other Materials
Rebar that is:

• Covered with mud
• Oily
• Coated with foreign materials

will reduce the bond with the concrete. If not cleaned, the casting quality can decrease.

5. Rebar Without Clear Identification
Rebar without:

• Factory marking
• Quality identification
• Supporting documentation

is often used directly. This makes it difficult to verify whether the rebar meets SNI standards.

6. Failure to Sort Materials

Without sorting, the following risks can occur:

• Interchangeable diameters
• Incorrectly placed rebar
• Inappropriate structural function

This error is often only discovered after the concrete is poured.

How to Prevent Errors Before Installation
Some simple steps that should be taken before installation:

• Conduct visual and physical inspections
• Check diameter, straightness, and surface condition
• Clean rebar from excess dirt and rust

Ensure rebar conforms to drawings and specifications

Conclusion
Ignoring the condition of rebar before installation is a serious mistake that can reduce the strength, durability, and lifespan of the building. A simple pre-installation inspection is actually an important investment in the long-term quality of the structure.

Use Quality, Guaranteed Rebar
PT Intisumber Bajasakti provides SNI-certified rebar with controlled quality, ready to support your construction project with safe, standard-compliant materials.

📞 Phone: 021-66675999
🌐 Website: intisumberbajasakti.com
✉️ Email: info@intisumberbajasakti.com

Contact our team now for a consultation on your rebar needs and project material solutions.

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