Views: 0 Author: Site Editor Publish Time: 2026-06-09 Origin: Site
EPDM elastic ground relies on excellent anti-slip, shock absorption and environmental protection performance, which is widely used in outdoor public activity venues. After long-term natural weathering and artificial trampling, most EPDM grounds do not have structural base damage, but present superficial failures such as surface particle looseness, local bare glue, uneven color, fine voids and slight sanding. For such non-structural damage, overall resurfacing or demolition and reconstruction will cause serious waste of resources. The colored adhesive repair technology for old EPDM grounds is designed for superficial aging and damage. By using high-elasticity, color-customized special adhesive, it integrates the loose old particles, seals the ground voids, covers the faded area, and forms a new dense and wear-resistant protective layer on the original ground surface. It can not only repair structural defects but also restore the overall color uniformity of the venue, achieving dual effects of structural reinforcement and aesthetic renewal.
Colored glue repair is a targeted precision repair process, which is mainly applicable to the mild and moderate damage of EPDM ground with intact and stable base layer. It is not suitable for venues with serious base hollowing, large-area cracking and severe layer separation. The specific applicable scenarios are as follows:
2.1 Slight particle loosening and partial falling off
The adhesive of the original EPDM surface is aged and invalid, resulting in individual or local particle looseness and sporadic particle falling off. The overall ground structure is stable without large-area damage. The colored adhesive can penetrate the gaps between particles, re-bind the loose particles, and prevent further peeling and falling off.
2.2 Overall fading and mottled color difference
Affected by ultraviolet radiation and rain erosion, the original colorful EPDM ground is oxidized and faded, with inconsistent color between the exposed area and the shaded area, and partial whitening and mottling, which seriously affects the overall appearance of the venue. The color-matched colored adhesive can cover the faded surface and restore the uniform and bright color of the whole field.
2.3 Surface voids, sanding and rough wear
After long-term friction, the surface of the EPDM ground is worn, with increased surface voids, rough hand feeling and slight sanding during trampling. The colored adhesive can fill the surface tiny voids, compact the surface structure, improve the flatness and wear resistance of the ground, and avoid dust and dirt accumulation.
2.4 Local bare glue and shallow damage
Partial areas of the ground are severely worn, resulting in particle loss and bare base glue layer, forming shallow pits and uneven surfaces. The colored adhesive can be used for local filling and overall covering repair to smooth the ground and eliminate damaged defects.
Compared with traditional particle resurfacing and overall renovation, colored glue repair has obvious advantages in economy, construction efficiency, repair effect and environmental protection, which is the optimal scheme for daily maintenance of old EPDM venues.
3.1 Low cost and high resource utilization rate
This repair technology does not need to remove the original intact EPDM particle layer, makes full use of the existing ground base, avoids material waste caused by overall reconstruction, and greatly saves material and labor costs. The repair cost is only 30%–50% of the traditional resurfacing renovation, with extremely high cost performance.
3.2 Fast construction and short recovery cycle
The colored glue repair process is simple and efficient, without complex procedures such as particle mixing and thick-layer paving. The single construction cycle is short, and the adhesive cures fast at normal temperature. The venue can be put into use quickly after construction, which minimizes the impact on the normal use of schools, kindergartens and community venues.
3.3 Integrated color and strong overall consistency
The colored adhesive can be customized according to the original color of the EPDM ground. After roller coating and curing, it can cover all faded and mottled areas, realize no color difference in the whole venue, solve the problem of patchy color difference caused by local particle repair, and make the venue color uniform and beautiful.
3.4 Reinforce structure and improve durability
The high-elasticity colored adhesive has strong permeability and bonding force. It can penetrate into the particle gaps of the old ground, re-bond loose particles, seal surface voids, form a dense integrated protective layer on the surface, effectively improve the wear resistance, anti-aging and waterproof performance of the ground, and extend the service life of the old venue by 3–6 years.
3.5 Safe and environmentally friendly with reliable performance
The special colored adhesive for EPDM ground is made of environmentally friendly polyurethane raw materials, which is non-toxic, odorless, free of harmful substances, and meets national environmental protection and safety standards for children's activity venues. After curing, it maintains moderate elasticity, does not affect the original shock absorption and anti-slip performance of EPDM ground, and ensures the safety of user activities.
To ensure the repair quality, color consistency and structural stability of the ground, the colored adhesive repair construction must follow standardized process steps, and strictly control the cleaning, glue matching, coating and curing links.
First of all, comprehensively clean the construction site, remove surface dust, fallen leaves, oil stains, moss and sundries. Use a hair dryer and high-pressure water to clean the particle gaps thoroughly to ensure no residual dirt. For completely loose, falling and invalid particles, manually shovel and clean them up to ensure that the remaining base particles are firm and solid, providing a good bonding base for colored adhesive construction.
For local bare glue, shallow pits and seriously worn areas, use matching EPDM fine particles mixed with colored adhesive for partial filling and leveling treatment. After filling, trim the surface to keep it flat with the surrounding ground, and wait for initial curing to avoid local unevenness affecting the overall coating effect.
According to the original design color of the EPDM venue, conduct on-site color matching of the colored adhesive to ensure that the repaired color is highly consistent with the original ground color without obvious color difference. After color confirmation, mix the adhesive and curing agent in strict accordance with the proportion requirements, and stir evenly at a constant speed to avoid bubbles and precipitation, so as to ensure the uniformity and bonding performance of the adhesive.
Use a professional roller to evenly coat the mixed colored adhesive on the cleaned and repaired EPDM ground. The coating should be uniform, without leakage, accumulation and sagging. The adhesive can quickly penetrate into the gaps of old particles, bond loose particles, and form a uniform color protective film on the surface. For venues with serious fading and wear, secondary roller coating can be carried out after the first coating is initially cured to ensure full color coverage and thicker protective layer.
During construction, focus on detailed treatment of venue edges, corners, junction of different color areas and drainage openings. Manually trim the uneven glue surface to ensure smooth transition of all parts of the venue, neat edges and no glue accumulation, so as to improve the overall flatness and beauty of the ground.
After the construction is completed, carry out closed curing, set up warning signs to prohibit pedestrians and vehicles from passing. Under normal temperature conditions, the initial curing time is 24 hours, and the complete curing is 48 hours. After curing, check the ground comprehensively, including color uniformity, surface flatness, bonding firmness and no particle falling off. After all indicators meet the standards, the venue can be officially put into use.
After the colored adhesive repair construction is completed, scientific maintenance can stabilize the repair effect and prolong the service life of the ground. Within one week after construction, avoid heavy pressure, sharp object scratching and artificial trampling. In daily use, regularly clean the ground with clean water or neutral detergent to keep the surface clean, and prohibit the use of strong acid and alkali corrosive solvents to prevent damaging the colored adhesive protective layer.
Regularly inspect the ground bonding condition every quarter. If individual particles are loose or local glue layer is worn, repair and supplement the glue in time to avoid the expansion of damaged areas. For outdoor venues exposed to the sun and rain for a long time, it is recommended to carry out a colored adhesive reinforcement coating every 2–3 years to maintain the long-term color brightness and structural stability of the EPDM ground.
The old EPDM ground repair technology with colored adhesive is an efficient, economical and environmentally friendly precision maintenance scheme, which perfectly solves the problems of high cost and serious waste of traditional overall renovation. It not only realizes the reinforcement and bonding of loose particles and the repair of superficial damage, but also realizes the overall color restoration and beautification of the venue. With the advantages of simple construction, short cycle, uniform color and stable performance, this technology is very suitable for daily maintenance and medium and minor repair of various EPDM activity venues. It can effectively reduce the operation and maintenance cost of the venue, maintain the safe and comfortable use state of the elastic ground, and provide strong technical support for the long-term and stable operation of public sports and leisure venues.
