Ensuring sound infrastructure

Sineco S.p.A, an Italian engineering company, carried out a Non-Destructive Testing (NDT) bridge deck assessment at Rio Vizzana Viaduct on the Cisa Highway in Italy to assess the current infrastructure and early detect the bridge’s damage. Using IDS GeoRadar’s specific ground penetrating radar (GPR) solution for concrete bridge deterioration, RIS hi-BrigHT, Sineco S.p.A provided a rapid, non-destructive and accurate condition assessment and monitored the performance of bridge deck conditions, significantly reducing the necessary expenditure for the bridge renewal.

Sineco S.P.A在工程领域运作，特别关注大型运输基础设施维护干预措施的控制和计划。该公司由SocietàIniziativeNazionali Autostradali（Sina）和其他重要的高速公路代表公司成立。Sineco S.P.A也是Autostrada Torino Milano（ASTM）集团的一部分，该集团是运输基础设施的负责人，其国家高速公路网络超过1200公里。

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Early detection of bridge deck damage

为了对Rio Vizzana高架桥的桥甲板中的腐蚀，分层和浸润进行完整评估，使用RIS Hi-Bright进行了使用GPR的调查。这种独特的GPR解决方案使用户可以使用专门为桥梁分析设计的软件轻松解释数据。

通过使用自动估计算法处理完整的收集数据集，Sineco S.P.A可以通过互相关提取的所有信息来评估桥梁甲板条件，例如：

• 钢筋层的深度
• concrete slab thickness
• 钢筋反映的电源，
• estimation of moisture presence by propagation velocity estimation.

Following the assessment of the deteriorated status of the concrete and rebar mesh, the bridge deck was completely removed and the data from RIS Hi-BrigHT was compared to the actual status of the bridge deck.

该系统由16个2gigahertz通道的巨大天线阵列组成，其间距为10厘米，安装在轻巧且高度可操纵的手推车上，并由大型24安培小时（AH）12伏电池提供动力。与单个天线GPR相比，RIS Hi-Bright宽1米，可以扫描带有单个方向的桥梁。得益于IDS Georadar的GPR系统的快速数据收集，当局只需要在调查过程中关闭桥梁约25分钟即可完成210平方米的总收购。

"Thanks to the double polarisation of the RIS Hi-BrigHT antennas, it is possible to obtain a complete and detailed detection along each scan line over the bridge deck, instead of losing time creating a net of orthogonal ones,” said Marco Umberto Conti, geophysicist at Sineco S.p.A. “Acquisition experiences on bridge decks, demonstrated how easily and swiftly the job can be accomplished with RIS Hi-BrigHT, having benefits for both operator and customer."

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Post-processing analysis and data interpretation

Map of Asphalt Thickness

在后处理阶段，Sineco S.P.A评估了：

• 沥青层厚度
• depth of the rebar mesh and,
• visualised corrosion, concrete cover thickness and moisture in different maps.

Map of Corrosion

水分图

All this was done using IDS GeoRadar software GRED HD Bridge.

Aside from reducing the duration of traffic interruption during field operations, the denser measurements provided by RIS Hi-BrigHT yield a more accurate characterisation of the condition of the bridge deck, a better prediction of the deterioration progression, and a better assessment of the rehabilitation needs. Such comprehensive and accurate assessments can also reduce the frequency of detailed follow-up inspections. In addition, data collected from the non-destructive tests of bridge decks can complement other information to better understand life-cycle costs, deterioration mechanisms, and the effectiveness of preservation techniques at various stages of the aging process.

Conti说：“对客户的优势很明显：单线或整个车道关闭的时间短；等待此检测结果的时间更少；以及一个完整的数据集进行重组计划。我们也通过直接验证看到了我们使用Gred HD桥导出的电源图的桥梁混凝土板的稀缺是一个非常有效的工具，可以识别可能受增强杆恶化影响的区域。”