Multi Size Fiber Concrete Spacer
Standard
TCXDVN 356:2005: Concrete and Reinforced Concrete Structures – Design Standard
TCVN 5574:2018: Design of Concrete and Reinforced Concrete Structures
BS 7973-1:2001: Spacers and Chairs for Steel Reinforcement and Their Specification – Product Performance Requirements
EN 206: Concrete – Specification, Performance, Production and Conformity
DIN 1045: Plain, Reinforced and Prestressed Concrete Structures
AS/NZS 2425:2015: Bar Chairs in Reinforced Concrete – Product Requirements and Test Methods
Specifications
Function: Keeps reinforcing steel securely positioned and prevents displacement during concrete pouring.
Application: Foundations, basements, beams, floors, columns, grade beams, slabs, walls, roofs and precast concrete components.
Material: High-strength fiber-reinforced concrete.
Size: 20–100 mm.
Quality: Concrete strength grade ≥ M600.
Nominal load-bearing capacity: 2–50 kN.
Packaging: 100–1,000 pieces per bag or 50–500 pieces per box.
General Overview of HAN Multi-Size Concrete Spacers
HAN multi-size concrete spacers are designed with two or more cover heights in a single product. They securely position reinforcing steel and prevent it from shifting during concrete pouring, thereby maintaining the specified concrete cover. This protective layer helps shield the internal reinforced concrete structure from environmental exposure, oxidation and steel corrosion that may damage the structure and compromise construction safety.
Key Features of HAN Multi-Size Concrete Spacers
| No. | Feature | HAN Multi-Size Concrete Spacers |
|---|---|---|
| 1 | Design | At least two cover heights per product |
| 2 | Shape | Flower-shaped or block-shaped, with a central opening and a flat or recessed base |
| 3 | Size | 20–100 mm |
| 4 | Applications | Foundations, basements, beams, floors, columns, grade beams, slabs, walls, roofs and precast concrete components |
| 5 | Color | Natural concrete gray |
| 6 | Manufacturing technology | Machine-assisted concrete casting |
| 7 | Material | Compliant with applicable standards |
| 8 | Load-bearing capacity | Good |
| 9 | Stability against overturning | Good |
| 10 | Packaging | Plastic bags or cardboard boxes |
Classification of HAN Multi-Size Concrete Spacers
| No. | Classification Criterion | Types of Multi-Size Concrete Spacers |
|---|---|---|
| 1 | Intended use |
– Multi-size concrete spacers for foundations – Multi-size concrete spacers for beams – Multi-size concrete spacers for columns – Multi-size concrete spacers for slabs – Multi-size concrete spacers for precast concrete components |
| 2 | Design |
– Multi-size concrete spacers with a flat base – Multi-size concrete spacers with a recessed base |
| 3 | Material composition | – Fiber-reinforced multi-size concrete spacers |
| 4 | Concrete strength grade |
– Standard-grade multi-size concrete spacers – High-strength multi-size concrete spacers |
| 5 | Load-bearing capacity |
– Standard-load multi-size concrete spacers – Heavy-duty multi-size concrete spacers |
| 6 | Technical application |
– Multi-size concrete spacers for civil construction – Multi-size concrete spacers for industrial construction |
Materials Used to Manufacture HAN Multi-Size Concrete Spacers
HAN multi-size concrete spacers are manufactured from the same materials used for HAN concrete spacers, including sand, cement, aggregate, water, admixtures and reinforcing fibers. All materials comply with applicable construction standards.
Manufacturing Technology for HAN Multi-Size Concrete Spacers
HAN multi-size concrete spacers are manufactured using concrete casting technology. Precision molds ensure accurate dimensions and low dimensional tolerances.
How to Select and Use HAN Multi-Size Concrete Spacers for Optimum Technical and Economic Efficiency
| No. | Criterion | Recommended | Not Recommended |
|---|---|---|---|
| 1 | Design | Assess actual site conditions and select the most suitable multi-size concrete spacer. | Do not select a spacer whose shape or design is unsuitable for the project requirements. |
| 2 | Size | Select multi-size concrete spacers with cover heights from 15 to 100 mm. | Avoid using this spacer type for excessively large cover heights where its performance may be less efficient. |
| 3 | Load-bearing capacity | Confirm the nominal load-bearing capacity and conduct a site trial before selecting a product. | Do not select a spacer with a load-bearing capacity below the project requirement or use it without prior site verification. |
| 4 | Usage rate | Use at least the quantity recommended in HAN's standard installation guidelines, increasing it when site conditions require. | Do not reduce the recommended quantity, even when the selected spacer has a high load-bearing capacity. |
| 5 | Technical and economic efficiency | Base the selection on overall technical performance and economic efficiency. | Do not base the purchasing decision solely on a low price or the availability of multiple cover heights. |
| 6 | Packaging and storage | For high-volume use, select bulk quantities packed in plastic bags for easier handling and storage. | Do not choose cardboard-box packaging without first considering the available storage conditions. |
| 7 | HAN brand identification | Purchase from an authorized dealer or directly from HAN. Packaging should clearly state the product code, address, telephone number, quantity, manufacturing date and other relevant information. | Do not purchase products whose packaging does not clearly display the HAN brand. |
| 8 | Responsible personnel | Personnel with appropriate technical knowledge and experience should consult directly with HAN's technical team before making a purchasing decision. | Purchasing or accounting personnel should not make the final selection unless they fully understand the technical requirements. |
Transportation and Storage of HAN Multi-Size Concrete Spacers
Transportation precautions:
– Do not drag packages along the ground or throw them from a height.
– Use a truck with a flat cargo bed when transporting bags or boxes of concrete spacers.
– Place heavier bags and suitable products at the bottom. Place upper-layer slab reinforcement spacers (including CSS050U, CSS070U, CSS090U and CSS110U) on top, and do not stack them excessively high.
Storage precautions:
– Store the products in a raised, dry and well-ventilated area. Avoid direct contact with soil, mud, moisture and mold.
– Products packed in plastic bags may be stored outdoors for one to three months, subject to appropriate site conditions.
– Products packed in cardboard boxes must be placed on pallets and protected from water and high humidity.
Quality Standards for HAN Multi-Size Concrete Spacers
HAN multi-size concrete spacers comply with the applicable standards for HAN concrete spacers, including:
TCXDVN 356:2005: Concrete and Reinforced Concrete Structures – Design Standard
TCVN 4116:1985: Hydraulic Concrete and Reinforced Concrete Structures – Design Standard
TCVN 9139:2012: Hydraulic Structures – Concrete and Reinforced Concrete Structures in Coastal Areas – Technical Requirements
TCVN 9346:2012: Concrete and Reinforced Concrete Structures – Requirements for Corrosion Protection in Marine Environments
TCVN 5574:2018: Design of Concrete and Reinforced Concrete Structures
BS 7973-1:2001: Spacers and Chairs for Steel Reinforcement and Their Specification – Product Performance Requirements
BS 8110:1997: Structural Use of Concrete
HAN multi-size concrete spacers offer several advantages:
Designed with an optimized shape, providing multiple cover depths in a single product.
Suitable for both horizontal and vertical reinforcement applications.
Versatile for use in piles, basements, foundations, beams, ground slabs, columns, grade beams, floor slabs, walls and reinforced concrete roof slabs.
Key Considerations:
Clearly identify the required concrete cover standards applicable to the structure and project.
Select multi-size concrete spacers with suitable design, features, dimensions and load-bearing capacity.
Conduct a trial installation to evaluate actual performance before full-scale construction.
Select spacers with a concrete strength grade that complies with the applicable standards for the structural component and project.
Calculate the required quantity based on the quantity takeoff, usage rate and contingency allowance.
Please contact HAN Corporation’s authorized distributor network or factory sales department to purchase genuine HAN multi-size concrete spacers.
Currently, HAN multi-size concrete spacers are available in two packaging options:
Bag packaging: 100–1,000 pieces per bag. Most HAN multi-size concrete spacers are packaged in bags, making them suitable for projects, contractors and trading companies. This packaging is convenient, easy to store and suitable for outdoor storage.
Carton packaging: 5–50 pieces per box. This method is mainly used for spacers supporting the upper reinforcement mesh in slabs, such as CSS050U, CSS070U, CSS090U and CSS110U. The boxes are compact and lightweight but must be stored indoors, away from moisture and outdoor exposure.
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