Overflow-type tester for the permeability coefficient of permeable paving bricks, pervious concrete and other permeable pavement materials.
Overview
This apparatus determines the permeability coefficient of permeable paving bricks, pervious concrete and other permeable materials. The main body consists of a transparent acrylic inner cylinder, an outer overflow tank, a metal base and inlet/outlet nozzles. The specimen is sealed at the lower part of the inner cylinder; water is fed in and the head is kept constant by the outer overflow outlet. Water permeates the specimen under constant head; the effluent volume is collected in a graduated cylinder and timed with a stopwatch, and the permeability coefficient is calculated by Darcy's law. The outer overflow tank stabilizes the head, a graduated scale on the inner cylinder reads the head, and the side nozzles are for water supply and overflow drainage; the transparent body allows easy observation.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Name | permeable brick permeability coefficient test apparatus (overflow tank) |
| Inner cylinder material | transparent acrylic (PMMA) |
| Outer overflow tank | transparent acrylic annular trough |
| Base | metal (stainless steel / chrome-plated) |
| Inner scale | wall-attached graduated ruler for head reading |
| Nozzles | brass/stainless quick connectors, inlet + overflow drain |
| Specimen | permeable paving brick (thickness ≤80mm) |
| Test method | constant head method |
| Standard | JC/T 945, T/CBCA 002 permeable brick test method |
Standards
GB/T, JTG, ASTM
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Spare parts kit
FAQ
Q1: What standards does the Permeable Paving Brick Permeability Tester (Overflow Type) comply with?
A1: The Permeable Paving Brick Permeability Tester (Overflow Type) is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the Permeable Paving Brick Permeability Tester (Overflow Type) be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
Overview
This apparatus determines the permeability coefficient of permeable paving bricks, pervious concrete and other permeable materials. The main body consists of a transparent acrylic inner cylinder, an outer overflow tank, a metal base and inlet/outlet nozzles. The specimen is sealed at the lower part of the inner cylinder; water is fed in and the head is kept constant by the outer overflow outlet. Water permeates the specimen under constant head; the effluent volume is collected in a graduated cylinder and timed with a stopwatch, and the permeability coefficient is calculated by Darcy's law. The outer overflow tank stabilizes the head, a graduated scale on the inner cylinder reads the head, and the side nozzles are for water supply and overflow drainage; the transparent body allows easy observation.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Name | permeable brick permeability coefficient test apparatus (overflow tank) |
| Inner cylinder material | transparent acrylic (PMMA) |
| Outer overflow tank | transparent acrylic annular trough |
| Base | metal (stainless steel / chrome-plated) |
| Inner scale | wall-attached graduated ruler for head reading |
| Nozzles | brass/stainless quick connectors, inlet + overflow drain |
| Specimen | permeable paving brick (thickness ≤80mm) |
| Test method | constant head method |
| Standard | JC/T 945, T/CBCA 002 permeable brick test method |
Standards
GB/T, JTG, ASTM
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Spare parts kit
FAQ
Q1: What standards does the Permeable Paving Brick Permeability Tester (Overflow Type) comply with?
A1: The Permeable Paving Brick Permeability Tester (Overflow Type) is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the Permeable Paving Brick Permeability Tester (Overflow Type) be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
