What is the difference between embedded rubber waterstops with and without holes? (Rubber waterstop joint)

Key points for construction control of steel-edged rubber waterstops:

1. The waterstop's embedding position should be accurate, and its central hollow ring should coincide with the expansion joint.

2. Embedded waterstops should be fixed to the end cap formwork. Install one end first, and protect the other end with a box-type formwork when pouring concrete. During fixing, only drill holes in permitted areas of the waterstop; do not damage the waterstop itself.

3. When fixing the waterstop, prevent it from shifting to avoid unilateral shortening and affecting the water-stopping effect.

4. When positioning the waterstop, ensure it remains flat at the interface, preventing it from rolling or twisting. If twisting or unevenness is found, adjust it immediately.

5. The length of the waterstop should be custom-made from the manufacturer in advance according to construction requirements (one ring length), minimizing joints.

If joints are absolutely necessary, the following requirements must be met for butt joints (hot vulcanization connection is recommended for waterstop joints).

6. Rubber waterstop joints must be well bonded; untreated "lap joints" should not be used.

7. Before bonding the waterstop, the joint surface should be cleaned and roughened. The joint should be located in an area of lower stress in the lining structure. Hot vulcanization can be used for bonding. The overlap length should not be less than 15-20cm, and the weld width should not be less than 50mm.

8. When installing waterstop joints, avoid areas prone to water accumulation behind the wall. It is advisable to place them above or below the arch line.

9. When pouring concrete near the waterstop... During concrete pouring, the impact force should be strictly controlled to avoid puncturing the rubber waterstop due to excessive force. Sufficient vibration is also essential to ensure a tight bond between the concrete and the rubber waterstop. Any cracks found during construction should be repaired promptly.

10. After demolding the lining, if any formwork deviation is found, causing the waterstop to deviate excessively from the center, some concrete should be removed or filled to correct the waterstop's misalignment.

Embedded Steel-Edged Rubber Waterstop: This type of waterstop is a composite component consisting of general expandable rubber and galvanized steel edges on both sides.

This type of waterstop relies primarily on the central rubber section in the concrete... Expansion joints are compressed or stretched, thus achieving a sealing and waterproofing function.

Centered-hole steel-edged rubber waterstops: This type belongs to the embedded type and is used on expansion joints. There is also a flat-hole type used on construction joints.

The cross-section of the steel-edged rubber waterstop adopts a non-uniform thickness structure, divided into a high-strength zone and a waterproof zone, ensuring uniform and reasonable stress distribution.

The walls of the expansion holes are flat, providing a large contact surface for the formwork during construction, reducing the risk of displacement. The steel plate has additional installation holes for connection with the reinforcing steel, ensuring a secure fixation and preventing movement.

The good adhesion between the galvanized steel plate and concrete further enhances the waterproofing performance.

The steel-edged rubber waterstop is characterized by its cross-section... This type of waterstop product features a non-uniform thickness structure, divided into a high-strength zone and a waterproof zone, ensuring even and rational stress distribution throughout.

The steel-edged rubber waterstop uses a steel plate with added installation holes for connection to reinforcing bars, providing a secure and stable fixation that prevents displacement, further ensuring even and rational stress distribution.

The expansion joint walls are flat, providing a large contact surface for the waterstop during formwork clamping, reducing the risk of dislocation; the added installation holes in the steel plate for connection to reinforcing bars ensure a secure and stable fixation.

The excellent adhesion between the galvanized steel plate and concrete, combined with the steel-edged rubber waterstop, enhances its waterproofing performance.

The embedded steel-edged waterstop is a waterproofing product composed of galvanized steel strip and natural rubber materials. It uses natural rubber with excellent aging resistance and various anti-aging agents as its main rubber material, possessing strong self-adhesion; it does not flow at high summer temperatures and does not become brittle at low winter temperatures; it also has excellent water resistance, acid and alkali resistance, and aging resistance; it has a long service life, is non-toxic, and environmentally friendly.

What are the methods for treating rubber waterstop joints (Rubbing waterstop joint construction methods)

There are two main methods for treating rubber waterstop joints: cold bonding and hot bonding. Hengshui Baijin Rubber Company will introduce these two methods separately:

The cold bonding method uses a special cold bonding adhesive for rubber waterstops. First, the waterstop is joined using an overlapping method. The cross-section of the water hose requiring a joint should be ground smooth for 5-10 cm using a grinder, then glue should be applied and compacted. The cold-jointing method is characterized by high strength, rapid solidification, convenient construction, time and labor saving, and can meet general engineering quality requirements.

The hot-jointing method involves on-site joint treatment using a hot-melt machine: using a hot vulcanizing mold and raw rubber sheet matched to the waterstop for on-site vulcanization and hot joining. The hot-jointing method is characterized by higher construction difficulty, ideal joint effect, and suitability for projects with strict engineering quality requirements.

What is the jointing method for steel-edged rubber waterstops? (Rubber waterstop jointing method)

1. Connect the two ends of the steel-edged rubber waterstop, i.e., the straight... 1. Cut off approximately 100mm of rubber from each end of the steel strip connecting to the cross joint. Use a tool, such as a grinding wheel, to smooth the steel edge.

2. Leave a 30-40mm gap in the middle of the overlap at the two ends of the Huiye Rubber steel-edged rubber waterstop that need to be welded. This gap is for welding the joint and connecting the clean raw rubber sheet. If the raw rubber sheet is dusty, wipe it clean with a clean cloth or grind the surface clean before use.

3. Apply rubber-metal adhesive to both sides of the smoothed steel edge.

4. While processing and grinding the connecting ends of the steel plate rubber waterstop, preheat the welding mold of the rubber waterstop. The preheating time should be... The heating wire operates for approximately 30 minutes. The purpose is to control the mold temperature between 140 and 150°C. Once the thermometer shows the mold temperature has reached 140-150°C, proceed to the next step.

5. Place the two ends of the steel-edged rubber waterstop to be welded, overlapping them as in step 2, into the center of the bottom mold of the rubber welding mold, filling the joint with raw rubber sheet.

6. Gently place the top mold of the welding mold according to the centering hole. During the placement of the top mold, avoid misalignment of the raw rubber sheet and the welding ends. If the two ends of the steel-edged rubber waterstop to be welded shift during the process, repeat this step to ensure the correct position of the welding ends.