How to Verify the Carbonation Resistance of a Manufacturer's GRC Products: Methods, Standards and Practical Guide

Durability is one of the core indicators for measuring a building's quality. GRC (Glass Fiber Reinforced Concrete), a material widely used in high-end architectural decoration, has a carbonation resistance that directly affects a building's service life and safety. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will provide designers and owners with a professional guide from three dimensions—testing methods, standard bases, and practical verification—to help accurately evaluate GRC product quality.

I. Scientific Testing: Revealing the Verification Methods for GRC Carbonation Resistance

Carbonation resistance is essentially a material's ability to resist carbon dioxide erosion and must be quantitatively assessed through rigorous experiments. Common testing methods include accelerated carbonation tests and natural exposure tests. The accelerated carbonation test simulates a high-temperature, high-humidity carbonation environment to measure the carbonation depth of GRC specimens within a short period. The fully automatic carbonation chamber used in Qinglong's laboratory can precisely control temperature (20±2°C), humidity (70±5%), and CO₂ concentration (20±3%), ensuring data reliability. The natural exposure test establishes test sites in typical climate zones to monitor the carbonation rate of GRC components over the long term. Qinglong's outdoor test bases in South China, North China, and other regions have accumulated more than 10 years of measured data, providing localized references for projects in different regions.

II. Standard Leadership: Building an Evaluation System for GRC Carbonation Resistance

Industry standards are the benchmark for quality verification. As a participating drafting unit of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong deeply understands the strict performance requirements set by the standards. According to the specification, the carbonation depth of GRC products should be no more than 5mm after 28 days under standard test conditions, with a post-carbonation strength loss rate not exceeding 15%. In addition, Qinglong's internal enterprise standard Q/QL001-2023 further raises the requirements, controlling carbonation depth within 3mm, and products undergo testing and certification by authoritative third-party institutions (such as the National Building Materials Testing Center) to ensure stable product performance.

III. Practical Verification: Quality Control from Laboratory to Construction Site

Theoretical data can only demonstrate value when combined with engineering practice. In the Dongguan Women and Children's Activity Center project, Qinglong adopted a dual strategy of "material optimization + process upgrading" for GRC exterior wall cladding panels: silica fume and ultrafine mineral powder were incorporated to optimize the cementitious material system and improve matrix compactness; a vacuum extrusion molding process was adopted to reduce internal porosity, improving the product's carbonation resistance by 40% compared to traditional processes. After 5 years of natural exposure, the project's tested carbonation depth was only 2.3mm, far superior to industry standards. In addition, the full life-cycle traceability system established by Qinglong uses RFID chips to record the raw material ratios, curing parameters, and test reports of each batch of GRC components, providing owners with quality assurance throughout the entire process from production to operation and maintenance.

When selecting GRC products, verification of carbonation resistance should not rely solely on test reports provided by manufacturers; it also requires examining the company's technical strength and engineering experience. As a National High-Tech Enterprise and a "Specialized, Refined, Distinctive, and Innovative" enterprise, Qinglong has always taken "creating beautiful architecture" as its mission, perfectly integrating material performance with architectural aesthetics. Whether it is the curved curtain walls of grand theaters or the special-shaped components of commercial complexes, Qinglong's GRC products are all verified through scientific testing and practical verification, safeguarding the lasting vitality of buildings. In the field of new architectural decoration materials, choosing Qinglong—a manufacturer with full-chain service capabilities—means choosing the dual guarantee of quality and peace of mind.