Pre-construction preparation stage
1. Asphalt Foundation
Asphalt foundation is divided into ordinary asphalt foundation and hydrophobic asphalt foundation.
The price of ordinary asphalt is a little cheaper, and it is the preferred product of runway foundation.
Hydrophobic asphalt foundation has good stability, anti-freezing and anti-cracking, but it has high cost and complex construction.
Asphalt foundation is suitable for most artificial grasslands, but the disadvantage is the high cost.
2. Cement/Cement Powder Foundation
The construction period of cement/cement paste foundation is short, the cost is low and the drainage performance is good.
Moderate price, suitable for most sites, is the preferred basis for artificial grass.
3. Elastic Foundation of Football System
It is suitable for professional football man-made grassland and pursues the overall system performance.
The disadvantage is the poor selectivity of drainage.
4. Requirements for Foundation Construction
Basic materials:All kinds of materials used in construction shall be used for construction only after passing the inspection.
Basic appearance:The surface is uniform, solid, without obvious marks of road compaction, flat and crackless, without rotten edges, piled, loose, wavy and hemp surfaces, smooth and smooth joints, and no water blocking phenomenon.
Foundation drainage:When testing water, after 120 minutes of rainwater drainage, water accumulation is allowed, but the thickness of water accumulation should not be greater than 4 mm.
Drainage gradient:After the foundation is completed, the 10x10m grid is put to retest the elevation, and the drainage gradient, drainage gradient & le; 0.7%, and error & lt; 1.5 & permil are calculated.
Density:Compactness of stable layer rolling & ge; 93%;
Pass rate:The qualified rate of flatness, slope and site elevation is above 85%.
Thickness error:Thickness allowable deviation & plusmn; 10%.