How to Evaluate a UHPC Manufacturer's Product Quality Through Samples? Qinglong UHPC Sample Testing Standards Guide

Evaluating UHPC quality through samples requires 12 indicators across three aspects: appearance inspection, dimensional measurement, and performance testing. Key indicators include: surface flatness ≤2mm/2m, color difference ΔE≤3.0, compressive strength ≥120MPa, and chloride ion diffusion coefficient ≤2.0×10⁻¹²m²/s. High-quality samples should show balanced and stable results across all indicators.

Testing method standards: use a 2m straightedge to check flatness, a colorimeter to measure color uniformity, a compression testing machine to test strength, and the RCM method to determine the chloride ion diffusion coefficient. All Qinglong UHPC samples provided for testing come with third-party inspection reports, with authentic and verifiable data. One customer compared samples from 5 suppliers and ultimately chose Qinglong UHPC, as its strength coefficient of variation was only 4.5%, far below the 15% required by industry standards.

Appearance Quality Inspection

Surface bubble diameter ≤2mm, spacing ≥50mm; color difference ΔE≤3.0; these inspections secure the first pass.

Dimensional Accuracy Measurement

Length deviation ±2mm, thickness deviation ±1mm; these measurements control precision.

Performance Indicator Testing

Compressive strength ≥120MPa, flexural strength ≥18MPa; these tests verify performance.

Durability Verification

Electric flux ≤1000 coulombs; carbonation depth ≤1mm/year; these verifications ensure durability.

Sample testing requires professional standards. Qinglong UHPC welcomes testing—its quality is proven.