| Customization: | Available |
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| Material: | Coal Gangue Shale |
| Type: | Non Metallic Mineral Manufacturing Industry |
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Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
| China National Inspection and Testing Holding Group Xi'an Co., Ltd | |||||||||||||||||||
| National Building Materials Industry Wall and Roof Material Quality Supervision, Inspection and Testing Center | |||||||||||||||||||
| Inspection report | |||||||||||||||||||
| Number:X12403067 | |||||||||||||||||||
| Serial Number | Inspection items | Standard requirements | Inspection results | Single conclusion | Inspection basis | ||||||||||||||
| 1 | Allowable size deviation, mm |
Sample mean deviation | long wide high |
±2.5 ±2.0 ±1.5 |
+1.1 +0.8 +1.0 |
qualified | GB/T13544-2011 6.1 GB/T2542-2012 4 |
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| sample range |
long wide high |
≤8.0 ≤7.0 ≤6.0 |
2.0 3.0 2.0 |
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| 2 | Appearance quality, block | The number of non-conforming products allowed in one sampling of appearance quality≤7 | 1 | qualified | GB/T2542-2012 5 |
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| 3 | Density Grade |
Density,kg/m³ | 1100~1200 | 1180 | 1200 level qualified |
GB/T2542-2012 9 |
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| 4 | Strength Grade |
compressive strength, MPa |
average value | ≥15.0 | 16.6 | MU15 qualified |
GB/T2542-2012 7 |
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| Standard value | ≥10.0 | 14.1 | |||||||||||||||||
| 5 | Pore structure and porosity | pass | Rectangular strip hole or rectangular hole | Rectangular hole | qualified | GB/T2542-2012 13 |
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Hole size, mm |
Hole width dimension | ≤13 | 11 | ||||||||||||||||
| Hole length dimension | ≤40 | 28 | |||||||||||||||||
| Minimum outer wall thickness,mm | ≥12 | 13 | |||||||||||||||||
| Minimum rib thickness,mm | ≥5 | 7 | |||||||||||||||||
| porosity,% | ≥28 | 32 | |||||||||||||||||
| Hole arrangement | 1. All hole widths should be equal, and the holes should be arranged in a unidirectional or bidirectional staggered manner 2. The arrangement of holes should be symmetrical vertically and horizontally, evenly distributed, and the length dimension of the hand held holes must be parallel to the surface of the brick |
meet a requirement | |||||||||||||||||
| 6 | scum | Each brick or block is not allowed to have severe frosting | Slight frosting | qualified | GB/T2542-2012 11 |
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| 7 | lime blowing | 1. For explosive areas with a size greater than 2mm and less than or equal to 15mm, each group of bricks and blocks shall not exceed 15 locations, with no more than 7 locations exceeding 10mm 2. Explosive areas with a damage size greater than 15mm are not allowed to occur |
Destroy 10 explosive areas with a size of 2mm~10mm. | qualified | GB/T2542-2012 10 |
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| China National Inspection and Testing Holding Group Xi'an Co., Ltd | |||||||||||||||||||
| National Building Materials Industry Wall and Roof Material Quality Supervision, Inspection and Testing Center | |||||||||||||||||||
| Inspection report | |||||||||||||||||||
| number:X12403067 | |||||||||||||||||||
| Serial Number | Inspection items | Standard requirements | Inspection results | Single conclusion | Inspection basis | ||||||||||||||
| 8 | Weathering resistance performance | 5-hour boiling water absorption rate,% | average value | ≤21 | 19 | qualified | GB/T2542-2012 12 |
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| Maximum value | ≤23 | 21 | |||||||||||||||||
| Saturation coefficient | average value | ≤0.78 | 0.72 | ||||||||||||||||
| Maximum value | ≤0.80 | 0.75 | |||||||||||||||||
| 9 | Underfired bricks (blocks) and crispy bricks (blocks), blocks | Insufficient fire bricks (blocks) and crispy bricks (blocks) are not allowed | 0 | qualified | GB/T13544-2011 6.8 GB/T2542-2012 5 |
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| 10 | Radioactive nuclide limit | internal exposure index Ir | ≤1.0 | 0.4 | The main building materials are qualified | GB6566-2010 | |||||||||||||
| external exposure index I | ≤1.3 | 0.8 | |||||||||||||||||
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