Treatment of Various Base Surface Types and Application of Construction Methods

In accordance with the current National Standard ‘Code for Quality Acceptance of Construction of Building Floor Engineering’ GB50209-2016, base layer inspections shall be performed. Construction may proceed only after acceptance and when the base surface is free from defects such as sand shedding, hollowing, glossiness, peeling, looseness, roughness, grease, dust, cracks, and other imperfections. It is well known within the constructionmaterials industry that the principle of ‘30% materials, 70% construction’ is consistently upheld. Only the combination of high-quality materials and superior construction techniques can produce a high-quality floor. Even the best materials depend on the exquisite craftsmanship and construction methods of every artisan. The treatment of the substrate is merely the beginning of the entire process. The interface treatment of the base layer is a criticalfocus in the construction of the functional self-leveling system and is often overlooked. Improper treatment will directly impact subsequent construction and the finished product, causing a series of chain reactions, thereby un_x0002_derscoring the importance of foundational work. In addition to the treatment of the base surface, construction schemes should be reasonably adjusted according to different types of base layers to achieve optimal synergy.

Underfloor Heating and Construction Schemes

With the continuous improvement of living standards, comfortable winter heating has become a key livelihood issue closely linked to the well-being of the population. In recent years, the demand for centralized heating in southern regions has steadily increased. Regardless of the region, underfloor heating is the most widely adopted and is universally acknowledged as the most comfortable heating method among various options. Although various backfill techniques for floor heating construction exist on the market, most exhibit a series of problems post-construction, including poor thermal conductivityof the floor heating, susceptibility to hollowing, cracking, sand shedding, and pipe damage. The common types of floor heating requiring backfill leveling are classified into two categories: hydronic heating and electric heating. Hydronic wet laying backfill is currently the most mainstream and widely used construction method, and also the most prone to issues, primarily due to its relatively low construction cost.To resolve the aforementioned issues, the YuShow functional self-leveling system ‘Underfloor Heating Backfill Leveling Standardized Solution’ has been introduced. The detailed solution is as follows:

1.Wet Laying Type

2.Dry-lay type

Scheme 1: Leveling thickness 1-2 cm using self-leveling (see Figure 4)

Scheme 2: For leveling thickness above 3 cm, sound insulation system or D200 coarse leveling can be used; for expedited construction (surface finishing within one month), cement may replace high-strength shrinkage-free powder material (note curing) (see Figure 5)

3.Electric Heating