Circular Fiber Concrete Spacers

Describe Circular Fiber Concrete Spacers

General Introduction to HAN Round Concrete Spacers

Round concrete spacers are one of HAN's concrete spacer product lines. Their circular design features a hollow center that secures the reinforcement and prevents it from shifting during concrete pouring. They create the required concrete cover to protect the internal reinforced concrete structure from environmental deterioration, such as oxidation and reinforcement corrosion, which can damage structural components and compromise the safety of the project.

Identifying Features of HAN Round Concrete Spacers

No.	Feature	Round Concrete Spacer
1	Design	One size per product
2	Shape	Circular shape with a hollow center and a flat or concave base
3	Dimensions	20–150 mm
4	Applications	Foundations, basements, beams, ground slabs, columns, girders, slabs, walls, roofs, and 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	Resistance to Tipping	Good
10	Packaging	Plastic bags/cartons

Classification of HAN Round Concrete Spacers

No.	Classification Criteria	Types of Round Concrete Spacers
1	Intended Application	- Round concrete spacers for foundations - Round concrete spacers for beams - Round concrete spacers for columns - Round concrete spacers for slabs - Round concrete spacers for precast concrete components
2	Design	- Round concrete spacers with a flat base - Round concrete spacers with a concave base - Round concrete spacers with attached tie wires
3	Material Composition	- Fiber-reinforced round concrete spacers
4	Concrete Grade	- Standard-grade round concrete spacers - High-strength round concrete spacers
5	Load-Bearing Capacity	- Standard-duty round concrete spacers - Heavy-duty round concrete spacers
6	Technical Standard	- Round concrete spacers for civil construction - Round concrete spacers for industrial construction

Materials Used to Manufacture HAN Round Concrete Spacers:

Round concrete spacers are manufactured from the same materials used for HAN concrete spacers, including sand, cement, aggregates, water, additives, and reinforcing fibers, all of which comply with applicable construction standards.

Manufacturing Technology for HAN Round Concrete Spacers:

HAN round concrete spacers are manufactured using concrete casting technology. The products are cast in precision molds to ensure accurate dimensions and tight tolerances.

How to Select and Use HAN Round Concrete Spacers for Optimal Technical and Economic Efficiency

No.	Criteria	Recommended	Not Recommended
1	Design	Select a round concrete spacer design according to the specific application. For example, use flat-base spacers for foundations and concave-base spacers for walls.	Do not use a single spacer design for every application.
2	Dimensions	Select round concrete spacers in the 20–150 mm size range.	Avoid selecting round concrete spacers larger than 150 mm unless specifically required.
3	Load-Bearing Capacity	Determine the required design load and select round concrete spacers with an appropriate load-bearing capacity.	Do not select round concrete spacers with a load-bearing capacity below the project requirements.
4	Recommended Usage Rate	Use at least the standard quantity recommended by HAN.	Do not reduce the specified quantity, even when using round concrete spacers with good load-bearing performance.
5	Technical and Economic Efficiency	Use overall technical and economic efficiency as the primary criterion when selecting round concrete spacers	Do not base the purchasing decision solely on whether the unit price of round concrete spacers is lower or higher than that of other spacer types.
6	Packaging and Storage	For high-volume use, select bagged products supplied in larger quantities for convenient storage.	Consider the available storage conditions when selecting round concrete spacers packaged in cartons.
7	HAN Brand Identification	Contact an authorized distributor or purchase directly from HAN. Ensure that the packaging clearly displays HAN information, including the product code, address, and telephone number.	Do not purchase products without the HAN brand clearly printed on the packaging.
8	Personnel	Have knowledgeable and experienced personnel work directly with HAN's technical consultants when making purchasing decisions.	Do not allow accounting or purchasing personnel to make purchasing decisions unless they fully understand the technical requirements.

Transportation and Storage of HAN Round Concrete Spacers:

Important notes when transporting HAN round concrete spacers:

Do not drag the packages along the ground or throw them down from a height.
Use trucks with flat cargo beds when transporting bags or cartons of concrete spacers.
Place heavier bags and robust products at the bottom. Place slab-reinforcement spacers (note: CSS050U, CSS070U, CSS090U, CSS110U, etc.) on top, and do not stack them excessively high.

Important notes when storing HAN round concrete spacers:

Store them in a dry, well-ventilated area above ground level and protect them from direct contact with soil, mud, moisture, and mold.
Bagged products may be stored outdoors for 1–3 months.
Carton-packaged products must be stored indoors on pallets and protected from water and high humidity.

Quality Standards for HAN Round Concrete Spacers:

Round concrete spacers comply with the same standards applicable to 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 (British Standard), “Spacers and Chairs for Steel Reinforcement and Their Specification – Part 1: Product Performance Requirements”
BS 8110:1997 (British Standard), “Structural Use of Concrete”