Current and Emerging Water Main Renewal Technologies

Matthews, John C.; Selvakumar, Ariamalar; Condit, Wendy

doi:10.1061/(asce)is.1943-555x.0000121

Cited by 12 publications

(4 citation statements)

References 13 publications

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“…The PE liner used for structural reinforcement of water pipelines must meet AWWA Class II. Therefore, determining the appropriate liner thickness is crucial (Matthews et al 2013;AWWA 2014). Depending on the pipe diameter and thickness, the PE pipe can be designed as AWWA Class IV or higher to replace the structural performance of the host pipe.…”

Section: Minimum Liner Thicknessmentioning

confidence: 99%

Development of die drawing design factor prediction models for trenchless rehabilitation of water pipes: a case study

Oh,

Park,

Kim

et al. 2024

AQUA — Water Infrastructure, Ecosystems and Society

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Maintenance and replacement of aging water pipes are critical for urban development. To this end, trenchless rehabilitation methods that do not require excavation offer an efficient replacement for aging water pipes. Thus, this study developed a trenchless method using die drawing, which continuously inserts polyethylene (PE) liners into the reach point while maintaining traction in the host aging pipe. If the traction is removed after a certain period, the initially contracted liner pipe undergoes expansion under natural restoration and tightly adheres to the inner wall of the host pipe to achieve structural regeneration of the aging pipe. This study aimed to determine the factors influencing the die drawing process using a rehabilitation design. Accordingly, we experimented with the die drawing method to achieve structural reinforcement using high elasticity PE liners. Thereafter, based on the experimental data, we developed prediction models to estimate traction, pipe restoration rate after traction release, and pipe restoration period. The developed models estimated the minimum required restoration period and provided deeper insights into the restoration behavior of the die drawing method employed in pre-equipment maintenance before on-site construction.

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Section: Minimum Liner Thicknessmentioning

confidence: 99%

Development of die drawing design factor prediction models for trenchless rehabilitation of water pipes: a case study

Oh,

Park,

Kim

et al. 2024

AQUA — Water Infrastructure, Ecosystems and Society

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“…The failure was attributed to moisture conditions which prevented a proper chemical reaction from occurring, resulting in a lining collapse. The product was removed from the market for further research and development and reintroduced using a new formula the following year (Matthews et al 2012b(Matthews et al , 2013(Matthews et al , 2014Selvakumar et al 2015).…”

Section: Demonstration #1 In Somerville Njmentioning

confidence: 99%

“…of diameter) for the lining, and it resulted in a field applied carbon footprint of 23,986 kg (52,880 lb) of carbon dioxide (CO 2 ), as calculated with the e-Calc tool (Sihabuddin and Ariaratnam 2009). The CO 2 footprint was estimated to be approximately half of the CO 2 from a similar sized open cut excavation project (if feasible) (Matthews et al 2012a(Matthews et al , 2013(Matthews et al , 2014Selvakumar et al 2015). This indicates an open cut excavation project of a 150-mm (6-in.)…”

Section: Demonstration #2 In Cleveland Ohiomentioning

confidence: 99%

Demonstration and Evaluation of Innovative Rehabilitation Technologies for Water Infrastructure Systems

Selvakumar

Matthews

2017

J. Pipeline Syst. Eng. Pract.

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The needs associated with the deteriorating water infrastructure are immense and have been estimated at more than $1 trillion over the next 20 years for water and wastewater utilities. To meet this growing need, utilities require the use of innovative technologies and procedures for managing their systems. The U.S. Environmental Protection Agency (USEPA) developed a demonstration program for pipe rehabilitation methods to help fill this gap. The program's objective is to evaluate pipe rehabilitation technologies that can increase the effectiveness of the operation, maintenance, and renewal of pipelines. This paper provides an impartial assessment of the effectiveness and cost of four innovative technologies for water distribution and wastewater collection pipes. The technologies demonstrated include spray-on polymeric lining and cured-in-place pipe (CIPP) lining for water mains; and spray applied geopolymer mortar and an internal pipe sealing system for wastewater mains.

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“…Recent developments of strengthening methods have attracted great attention. To strengthen deteriorating pipes, comprehensive strengthening methods have been proposed such as the replacement (Zhang et al, 2017), internal strengthening methods (such as relining (Smith and Bruny, 2004;Ambroziak et al, 2010;Matthews et al, 2013), slip-lining (Rahman et al, 2012), and carbon fiber-reinforced polymer (CFRP) (Dou et al, 2017a;Dou et al, 2017b;Dou et al, 2018)), and external strengthening methods (Elnakhat and Raymond, 2006). Strengthening with external prestressed strands is prominent, given that draining the pipeline is non-essential for construction.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of strengthening prestressed concrete cylinder pipes using a post-tensioning method

Zhao

Dou

et al. 2023

Front. Earth Sci.

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Prestress loss caused by broken wires can lead to a decline in the carrying capacity of prestressed concrete cylinder pipes (PCCPs). The strengthening of PCCPs using a post-tensioning method is becoming more and more widely utilized to restore strengthened pipes to the needed design capacity and to withstand combined loads. There is no need to drain the pipe during strengthening construction, and this strengthening actively replenishes the prestress loss caused by wire breakage at a cost-effective price. To verify the strengthening effect of this method, a full-scale test and its corresponding three-dimensional finite-element model were established. A three-dimensional numerical model of three continuous prototype pipes was established and accounted for the particularity of the bell and spigot. The numerical model of prestressing wires was optimized in two aspects, which was more in line with the actual situation. The spiral winding method instead of single winding was adopted to apply prestress, and the prestressing wires with a broken point were partitioned into two separate areas due to the bond quality between the mortar coating and the wires. The simulation and the full-scale test both contain the five processes of strengthening with external prestressed strands as follows: pressurized to working pressure→breaking the prestressing wires until visible cracks propagate→gradual depressurization to artesian pressure→the tensioning operation of strands→and pressurized to design pressure. A sensitivity analysis of the related factors of strengthening was performed through finite-element simulation to provide a better understanding of the design. The simulation results were consistent with the data on the full-scale test and indicated the rationality of this process. The strengthening of PCCP with a post-tensioning method can meet the design demand and is a feasible strengthening method. The working pressure and control coefficient of tensioning have the most significant impact on the strengthening effect. Technical recommendations and a better understanding of the application of the post-tensioning method on PCCP are provided in this study.

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Current and Emerging Water Main Renewal Technologies

Cited by 12 publications

References 13 publications

Development of die drawing design factor prediction models for trenchless rehabilitation of water pipes: a case study

Development of die drawing design factor prediction models for trenchless rehabilitation of water pipes: a case study

Demonstration and Evaluation of Innovative Rehabilitation Technologies for Water Infrastructure Systems

Experimental and numerical analysis of strengthening prestressed concrete cylinder pipes using a post-tensioning method

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