Embedded Rubber Waterstop

Embedded rubber waterstop, this is a product mainly used for setting waterstops inside concrete at deformation joints, expansion joints, etc. It utilizes the high elasticity and compressive deformation of rubber to produce elastic deformation under various loads, effectively preventing leakage and seepage of building components, and providing shock absorption and buffering effects, ensuring the service life of engineering buildings.

There are two methods for connecting embedded rubber waterstops: one is using adhesive for cold joints, and the other is using hot vulcanization molds for hot joints. Below are the introductions to the two connection methods: Cold joint with adhesive uses special cold joint glue for rubber waterstops, and the joint surface that needs to be connected is ground smooth for 5-10 cm with a grinder, then glue is applied and pressed firmly, which has the advantages of high strength, quick solidification, convenient construction, and time-saving, meeting general engineering quality requirements.

On-site hot vulcanization jointing method uses hot vulcanization molds and raw rubber sheets that match the waterstop for on-site hot jointing. The construction difficulty is high, but the jointing effect is ideal, suitable for projects with strict quality requirements.

Embedded rubber waterstop is partially or fully embedded in concrete during the concrete pouring process. After the previous section of concrete pouring is completed, the construction joint interface hardens and dries, the interface debris is removed, and before embedding in concrete, it must be kept flat at the interface, with the joint part glued tightly. The waterstop joint must be well glued, and if the construction site conditions are met, the hot vulcanization connection method can be used. Any so-called "overlap" without treatment is absolutely not allowed. Then, with appropriate force, thoroughly tamp and vibrate the concrete to position the waterstop, ensuring good bonding with the concrete to avoid affecting the waterstop effect.

During the construction process, due to the presence of many sharp stones and sharp steel bars in the concrete, care should be taken with the impact force when pouring and positioning the waterstop to avoid puncturing the rubber waterstop due to excessive force. If any rupture is found, it should be repaired promptly; otherwise, the ability of the rubber waterstop to resist external forces will be significantly reduced when the joint deforms and is subjected to water pressure.

When positioning the rubber waterstop, the product installation must be fixed to avoid displacement during concrete pouring, ensuring the correct position of the waterstop in the concrete. It must be kept flat at the interface and should not roll or twist. If any twisting or non-flatness is found, adjustments should be made promptly. Common methods to fix the waterstop include: using additional steel bars for fixation; special clamps; lead wires and formwork fixation, etc. If perforation is needed, it can only be installed at the edge of the waterstop and must not damage other parts.

Back-adhesive Rubber Waterstop

External adhesive rubber waterstop, also known as back-adhesive waterstop or external waterstop, is a waterstop structure set on the outer side (water-facing side) of the concrete deformation joints and settlement joints of underground structures, which has the ability to adapt to the expansion and contraction of concrete due to the elasticity and structural form of the waterstop material.

External adhesive rubber waterstop utilizes the high elasticity of rubber to produce elastic deformation under various loads, thus providing strong sealing, effectively preventing leakage and seepage of building structures, and providing shock absorption and buffering effects. In many engineering designs, there are certain expansion and contraction requirements between civil engineering and water-soil structures, as well as waterproofing and seismic issues. Therefore, using and installing rubber waterstops is an effective means to solve these problems. It is mainly used in cast-in-place concrete at construction joints and deformation joints, becoming an integral part of the foundation engineering, underground facilities, tunnels, aqueducts, and dams, ensuring the service life of the engineering construction. During the installation of rubber waterstops, if it is found that part or all of it is embedded in the concrete during the pouring process, and there are many sharp stones and sharp steel bar ends in the concrete, since the tearing strength of plastic and rubber is 3-5 times lower than that of tensile strength, once the waterstop is punctured or torn, the crack will expand without much external force. Therefore, attention should be paid to the positioning method and pouring pressure during the positioning of the waterstop and concrete pouring to avoid puncturing the waterstop.

Used for waterproofing deformation joints in underground structures, dams, water storage pools, swimming pools, roofs, and other buildings and structures. The selection of back-adhesive waterstops can be based on the following aspects: consider the corrosive effects of the medium to be contacted (such as acids, alkalis, salts, oils, solvents, and various corrosive gases) on the waterstop. When encountering weak acid or alkali corrosive media, chloroprene rubber waterstops are recommended. When encountering oil corrosive media, nitrile rubber waterstops are recommended. If there is a possibility of mold corrosion, the mildew resistance of the rubber waterstop should be considered, and its grade should reach level 2 or above. The choice of waterstop material should consider the usage conditions, such as the influence of temperature, ultraviolet and ozone aging, and repeated deformation. In low-temperature conditions, ethylene propylene diene monomer (EPDM) rubber waterstops are recommended.

About Us

Hengshui Guangyuan Waterstop Materials Technology Co., Ltd. is a comprehensive enterprise that has been committed to the research, development, production, and sales of engineering waterstop rubber for nearly 30 years. It specializes in the research, development, production, and sales of professional sealing waterstop materials: water-swelling waterstop strips series, single/double-component polyurethane sealant series, steel plate putty waterstop series, rubber waterstop series, and caulking clay series products. The products are reliable in quality and widely used, and have been recognized by many engineering units!

Business Philosophy: Focus on building waterproofing: Providing high-quality products and services for building waterproofing

Service Concept: To make customers satisfied with comprehensive, meticulous, and efficient service

Business Spirit: Quality Assurance, Professional Service: Double guarantee to eliminate the worries of users about waterproofing

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