Hercules Neoferma Expansion Seal (HN)

Expansion Joints

Herculon Neoferma Expansion Seal (HN)

HERCULES NEOFERMA EXPANSION SEAL, HN can be used to seal expansion joints in concrete roof slabs, floor slabs, car parks and small span bridge decks, and in between pre-cast wall units.

Materials

HN is extruded from a high-quality EPDM synthetic rubber having excellent ozone and ultra-violet resistance. It is tough, abrasion resistant and has low permanent compression.

DESIGN CONSIDERATIONS

Great care should be taken at the design stage to select a seal capable of accommodating the expected joint movements.
When detailing the joint configuration, the designer should ensure that all columns, parapets etc. are kept well clear of the expansion joint to allow easy installation of the seals.
In general, the joint width, at the time of installation, should be specified by the Engineer (within the limits given in the table) to take account of all expected movement of the structure, whether due to shrinkage, creep, elastic movements, temperature etc.
In concrete construction, the joint width, at the time of casting, should be specified taking into account the additional movements between casting and time of installation.

JOINT PREPATATION

Check that the correct size of seal has been specified and that the joint has been formed to the width shown on the plans.
Formwork for joints must be smooth and continuous.
After the concrete has cured the faces should be carefully inspected and any holes or cracks filled with epoxy mortar.
When steel nosings are specified, any welds should be ground back smooth and the steel either grit blasted and primed or galvanized.

SEAL INSTALLATION

Should joining on site be necessary, the seal should be cut square, degreased and bonded with Hercules Type HCB adhesive.
Do not recommend priming the joint faces before installing the seal.
It will be easier if two people install the seal - one pushing the seal into the joint and the other coming along behind with the installation tool.
HERCULES NEOFERMA, HN seals can be bent into quite small radius curves but sometimes at Kerbs and walls it may be necessary to cut a slit in the back of the seal.

Part No.	Seal Dimensions (mm)		Seal Capability			Seal Installation			Approx Wt per Metre (kg)	Length Of Coils (m)
	Width	Height	Joint Width (mm)	Maximum Total Movement (mm)	Optimum Gap (mm)	Minimum Recess Depth (mm)	Distance of Seal Top Below Slab Level
HN/12	12	15	6	10	4	7	25	5	0.1	10
HN/20	20	26	12	17	5	13	30	7	0.4	10
HN/30	30	30	15	26	11	21	35	8	0.6	10
HN/40	40	34	18	35	17	26	45	8	0.9	10
HN/50	50	44	21	44	23	32	55	8	1.2	10
HN/60	60	53	25	54	29	42	65	10	1.9	10
HN/80	80	59	34	74	40	59	80	10	2.4	10
HN/100	127	127	43	108	65	76	151	10	3.0	10

HERCULES COVER PLATES

Hercules Cover Plates are desired to offer modern architects with the flexibility of choice to incorporate custom-designed cover plates for structural expansion joints in buildings. The following materials can be custom-designed to provide a new dimension of elegance.

Flat Mild Steel Plates
A more economical solution of the cover pates for slab ceilings at car parks and columns or walls at enclosed areas. M.S. cover plates can be designed in various thickness and widths.

Aluminum Extrusion
Aluminum cover plates with a wide range of sizes & profiles can be extruded to suit the design requirements.

Stainless Steel Sheets
Cover plates using Stainless sheet/plates are desired to provide a reflection of lasting elegance. SS cover plates Gr. 304 can be custom made in different design finishes and patterns by hairline and mirror shine etching.

Thermoplastics Extrusion
This is provided to fulfill the common demand for expansion Joint covers. Joint covers using thermoplastics can be extruded in different colors & profiles to suit the architect's requirements.

STANDARD FIXING DETAILS

(A) BY CLIPS / PINS

(B) BY COUNTERSUNK SCREWS

Our Services

Design

We serve as technical liaisons with consulting engineers and builders at the design stage of a project. Provision of detailed specifications, calculations and feedback on drawings for project specific applications.

Manufacturing

All products in the Hercules™ range are manufactured and tested in compliance with the relevant standards: AS5100.4:2017, BS5400, AASTHO and MS ISO 9001.

Technical Support

We provide detailed installation guidance that is specific to each project and site conditions. Remote and/or on-site assistance provided by via comprehensive data sheets and trained personnel where appropriate.