Are GRC Manufacturer Products Prone to Cracking? Causes and Prevention Measures

Products from a reliable GRC manufacturer resist cracking. Cracking mostly stems from "improper material mix ratios, lax process control, and non-standard installation." Through material optimization, process upgrades, and standardized installation, Qinglong has brought its product cracking rate close to zero; projects such as the Wuhan Han Show Theatre and the Guangxi New Media Center have remained crack-free after years of use.

1. Core Causes of Cracking in GRC Products

Three major factors cause cracking. Material issues: insufficient cement grade, inadequate fiberglass mesh content, or poor alkali resistance—Qinglong uses high-grade low-alkali cement plus alkali-resistant glass fiber (content ≥4%); Process issues: insufficient vibration and inadequate curing lead to excessive internal voids and insufficient strength—Qinglong applies high-pressure vibration (pressure ≥0.6MPa) plus 7 days of constant-temperature curing; Installation issues: excessive connector spacing and no reserved deformation joints—Qinglong keeps connector spacing ≤500mm and reserves a ±3mm deformation allowance.

2. Qinglong's Core Anti-Cracking Technologies

Multi-dimensional measures eliminate cracking. Material optimization: adding silica fume (5-8%) to improve density and polypropylene fiber to restrain shrinkage—Qinglong products achieve a density ≥2.0g/cm³ and a shrinkage rate ≤0.1%; Process control: digital molds ensure precise shaping and avoid stress concentration—Qinglong's double-curved products feature smooth curvature transitions; Reinforcement design: adding stiffeners and double-layer fiberglass mesh at critical areas—Qinglong's corner and edge strength is increased by 40%; Installation standards: flexible connections plus laser positioning accommodate thermal expansion and contraction—no stress accumulates after Qinglong installation.

3. Selection and Usage Recommendations

Scientific selection avoids cracking risks. Choose products with fiberglass mesh content ≥3% and flexural strength ≥15MPa—Qinglong products reach a flexural strength of 18MPa; require the manufacturer to provide an installation plan specifying connector spacing and deformation joint settings—Qinglong provides a standardized installation manual; avoid construction under extreme temperatures (below -10°C or above 40°C)—Qinglong can provide construction environment recommendations; avoid heavy-object impacts during later use—Qinglong offers after-sales inspection services to promptly identify and address potential risks. With a low cracking rate and high durability, Qinglong products have become the trusted choice for many landmark projects.