Rubber Expansion Joints
17Pages

VA / ACME / Calamity Gasket Rubber Expansion Joints

ENGINEERED SYSTEMS Construction expansion gap and mounting 11 Appendix 1. Product drawings VA-profile 13 Appendix 2. Product drawings ACME-profile 14 This brochure is composed by Trelleborg Ridderkerk, in case more information is needed please consult our sales or technical department at Ridderkerk (The Netherlands). E-mail: bakker@trelleborg.com Internet: www.trelleborg.com/bakker

Trelleborg Ridderkerk BV The Company Trelleborg Ridderkerk is your partner in design and production of engineered rubber products. Our focus is on the markets of civil engineering, offshore oil and gas, dredging and sewage, building and industry. Our products seal, damp and protect demanding industrial environments worldwide. Since 1879 we have provided our customers with tailor-made solutions based on leading rubber technology and unique applications expertise. Trelleborg Ridderkerk is a member of the Trelleborg group – a global industrial group offering leading-edge expertise in polymer...

As a result of thermal expansion, creep, shrinkage and traffic loading measurements of constructions can vary. To make this movement possible, several joints can be implemented. The dimensions of the joints vary. To create a flat joint at all times and prevent leakage, a expansion joint is applied. Examples where expansion joints are used are; bridges, viaducts, concrete road surfaces, airfield runways and the inner site of tunnels. The expansion joint can be used in old as well in new constructions. 10/07 4

The expansion joint is often used in bridge structures at road level. The expansion joint can absorb the movement of the bridge as a result of temperature changes without any bulge dip or gap in the top surface. In this application the expansion profile is located between epoxy mortar nosings or prefabricated steelworks. VA-ROADJOINT 200 ASPHALT 200 EPOXY-MORTAR CONCRETE S Calatrava brug Trelleborg Ridderkerk expansion joints are supplied in a variety of forms. The choice for a joint is made by compression capacity and the dimensions of the expansion gaps. In the range of Trelleborg...

C A D VA-profile The VA profile is a robust profile used for heavy duty purposes. The joint is carefully designed to ensure that the rubber moves in predetermined directions as the expansion gaps close. Because of its geometry this profile is self conclusive. To prevent water running between joint and rubber profile we advise to use glue to attach profile to the joint. S In table 1 you will find several characteristics for the VA-profile. Profile Type VA 10 VA 30 VA 45 VA 60 Length span of bridge 5 – 14 m 14 – 42 m 42 – 63 m 63 – 84 m Dilat. Area (*) 10 30 45 60 Table 1 Joint gap A min A...

ACME-profile The ACME profile is a light profile which can easy be pressed in. Because of this it is ease to mount. When using this profile the joint can be straight. C A Ecoduct “Leusderheide” In table 2 below you will find several characteristics for the ACME-profile. Table 2 Length Dilat. Joint gap span of Area A min A max bridge (*) (40 °C) (-20 °C) 20 20 40 ACME 20A 5 - 27 m 30 30 60 ACME 30V 27 – 42 m 35 35 70 ACME 35 33 – 47 m 45 50 95 ACME 45V 42 – 63 m 60 60 120 ACME 60 63 – 84 m Profile Type Minimum Joint depth C 37 50 87 83 100 Minimum gap during installlation (10ºC) 30 50 55 70...

We recommend to chamfer the edges of the joint. In appendix 2 and 3 technical drawings of the Trelleborg Ridderkerk expansion joints are shown. HSL-lijn Zuid Calatrava brug 10/07 8

In the figure below the dimensions of the expansion gap are shown for the VA and ACME profile. C A B S To calculate the expansion gap (S) the following formula is used. Expansion gap (S) = (Smax) - (0,000012 * ( t + 20 ) * L ) - (L * K) = Maximum expansion gap at -20 °C (see table page 5) = Working length span of bridge (mm) = Temperature concrete ( °C) = Factor for creep and shrinkage of concrete - Concrete between 3 and 12 months K=0,00014 - Concrete older than 1 year K=0 - Linear expansion coëfficiënt for reinforced concrete: 12 x 10-6. - Temperature area from -20 till +40 C (∆t = 60°C)....

Example: Given: • • • • Length span: 2x 84 meter Temperature concrete while mounting: t=10°C Temperature area: -20 till +40 C (∆t = 60°C). Point of time for mounting: 3 months after pouring concrete (K=0,00014) There is a difference between the joint at the jetty and the joint at the pier. Joint 1 Working length : ½ x length span = 42 meter Expansion joint: VA 45, Smax = 66 (see table page 5) Expansion gap (S) = (Smax) - (12 x 10-6 * ( t + 20 ) * L ) - (L * K) Expansion gap (S) = (66 - (12 x 10-6 * ( 10 + 20 ) *42.000 ) - (42.000 * 0,00014) Expansion gap (S) = 45 mm Dimension expansion gap...

Underneath the procedure to make a proper expansion gap with epoxy mortar, is given. One procedure is for a new construction and one for a gap in an existing construction. Procedure for applying a joint of epoxy concrete in a new construction 1. The joint is made on the spot after the asphalt concrete has been applied in sufficient thickness, and rolled over. To this end, the joint between the pier and the concrete coat must be sealed temporarily by wood or hard foam. The major advantage of this procedure is that the asphalt machines do not have to make any breaks at the point of the joint...

Procedure for applying a joint of epoxy concrete in a existing construction 1. The steel joint-frame must be removed. To obtain a decent joint a cut is made in the asphalt concrete. The asphalt concrete and steel is removed. 2. After removal of the asphalt concrete, the concrete surface and the reinforcing steel is cleaned thoroughly by means of sandblasting 3. To apply reinforcement, holes are made in the concrete on both sides of the joint. The holes are 200 mm deep and ∅17 mm every 200 or 250 mm a hole is made. 4. In these holes reinforced steel ∅12 mm is put and fixed with epoxy mortar....