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首页> 外文期刊>Journal of Environmental Management >Comparative field permeability measurement of permeable pavements using ASTM C1701 and NCAT permeameter methods
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Comparative field permeability measurement of permeable pavements using ASTM C1701 and NCAT permeameter methods

机译：使用ASTM C1701和NCAT渗透仪方法比较渗透性路面的现场渗透率测量

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Fully permeable pavement is gradually gaining support as an alternative best management practice (BMP) for stormwater runoff management. As the use of these pavements increases, a definitive test method is needed to measure hydraulic performance and to evaluate clogging, both for performance studies and for assessment of permeability for construction quality assurance and maintenance needs assessment. Two of the most commonly used permeability measurement tests for porous asphalt and pervious concrete are the National Center for Asphalt Technology (NCAT) permeameter and ASTM C1701, respectively. This study was undertaken to compare measured values for both methods in the field on a variety of permeable pavements used in current practice. The field measurements were performed using six experimental section designs with different permeable pavement surface types including pervious concrete, porous asphalt and permeable interlocking concrete pavers. Multiple measurements were performed at five locations on each pavement test section. The results showed that: (ⅰ) silicone gel is a superior sealing material to prevent water leakage compared with conventional plumbing putty; (ⅱ) both methods (NCAT and ASTM) can effectively be used to measure the permeability of all pavement types and the surface material type will not impact the measurement precision; (ⅲ) the permeability values measured with the ASTM method were 50-90% (75% on average) lower than those measured with the NCAT method; (ⅳ) the larger permeameter cylinder diameter used in the ASTM method improved the reliability and reduced the variability of the measured permeability.
机译：全透水路面逐渐成为雨水径流管理的替代最佳管理方法（BMP）。随着这些路面的使用增加，需要一种确定的测试方法来测量水力性能并评估堵塞情况，以用于性能研究和渗透率评估，以确保施工质量并维护需求。美国国家沥青技术中心（NCAT）渗透仪和ASTM C1701是多孔沥青和渗透性混凝土中最常用的两种渗透率测试方法。进行这项研究是为了比较在当前实践中使用的各种渗透性路面上两种方法在现场的测量值。现场测量是使用六种实验截面设计进行的，这些实验截面设计具有不同的渗透性路面类型，包括透水混凝土，多孔沥青和渗透性互锁混凝土摊铺机。在每个路面测试部分的五个位置进行了多次测量。结果表明：（ⅰ）与传统的管道腻子相比，硅胶是防止漏水的优良密封材料； （ⅱ）两种方法（NCAT和ASTM）都可以有效地用于测量所有路面类型的渗透率，并且表面材料类型不会影响测量精度； （ⅲ）用ASTM方法测得的磁导率值比用NCAT方法测得的磁导率值低50-90％（平均75％）； （ⅳ）在ASTM方法中使用的更大的渗透仪针筒直径提高了可靠性，并降低了测得的渗透率的可变性。

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