Quartz slabs and quartz stone countertops are a common material in kitchen and bathroom renovations, and their quality and performance are regulated by national standards. According to the national standard “Quartz Stone Slab” GB/T38144-2019, the main physical performance indicators of quartz stone countertops include:
1. Compressive Strength: The compressive strength of quartz stone slabs should be no less than 80MPa, which measures the material’s ability to resist failure under pressure.
2. Bending Strength: Also known as flexural strength, quartz stone slabs should have a minimum of 35MPa, indicating the material’s performance under bending forces.
3. Density: The density of quartz stone slabs should be no less than 2.30×10^3 kg/m^3, reflecting the compactness of the material.
4. Water Absorption Rate: The water absorption rate of quartz stone slabs should be no greater than 0.05%, an important indicator for evaluating the material’s waterproof performance.
5. Durability: Through wear tests, the surface wear rate of quartz stone slabs should not exceed 0.40g/m^2, which is related to the material’s service life and maintenance costs.
In addition to these physical performance indicators, the national standard also includes requirements for the appearance quality and dimensional tolerance of quartz stone countertops, as well as corresponding testing methods. These regulations ensure the quality control of quartz stone slabs during production and use.
In the market, the selection of quartz stone countertops should consider factors such as thickness, quartz sand content, and price. Thicker countertops are usually more durable, and higher quartz sand content generally means better quality. Products with excessively low prices may have quality risks, so consumers are advised to pay attention to these key indicators when purchasing and choose products that meet national standards.
Moreover, the maintenance of quartz stone countertops is also important. They should be protected from prolonged soaking or contact with corrosive chemicals to maintain their appearance and performance. In practical applications, quartz stone countertops are considered green and environmentally friendly decorative materials due to their wear resistance, high-temperature resistance, and anti-pollution characteristics, making them suitable for a variety of indoor spaces.
The national standard for quartz stone countertops provides guidance for consumers in selection and use, and the quality of quartz stone products on the market varies. Therefore, consumers should carefully identify and choose products that meet national standards when purchasing. At the same time, correct use and maintenance are also key to extending the service life of quartz stone countertops.
