ConShield > Technical Articles

Monday, February 06, 2012

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City of Portland Environmental Services

Project: 10010, SW 18th Ave. Replacement Project
Submittal: 13.100 Rehabilitate Manholes - revision 1

Comments: MS10,000 with Con-Shield is a cementitous liner product that BES is in favor of seeing used for MH structural rehab. Click image to view document.

Problem Solvers - Working in the bayou
Completing a difficult junction box rehabilitation on a tight schedule
Water Environment Federation Magazine July 2011

Problem: Microbiologically induced corrosion severly damaged a critical concrete junction box.

Solution: Repairing and replacing the degrade concrete using specially formulated concrete and an antimicrobial solution to inhibit future microbial corrosion.

Pipe Rehabilitation - Restoring A Corroded Sewer
July / August 2011
Trenchless World

Robert Kelly & James Smolik describe the user of CCCP techniques to renew a concrete sewer that had suffered hydrogen corrosion.

DEALING WITH H2S CORROSION IN THE GORDON TRUNK SEWER
March 27-31, 2011
Environmental & Engineering Services, City of London, London, ON

Since 2000 the City of London has been actively dealing with the effects of high levels of hydrogen sulphide in the Gordon Sanitary Trunk Sewer. Built in the late 1960s, the 5km concrete gravity sewer is fed by a 5km forcemain, and consists of pipe sizes ranging from 825mm to 1350mm. Contributing to the generation of hydrogen sulphide are upstream users that generate sewage with elevated BOD levels and poor hydraulics throughout the system. As a result, the City received complaints of odours; inspections revealed moderate to severe microbial induced corrosion throughout the sewer.

Technical Articles and Information Archive

	Microbac Beco Test - Test for the precence of ConShield in concrete samples		Situ Biosciences Bacterial inhibitory performance of treated concrete January 17, 2011
	Sanitary Hydrogen Sulfide Corrosion Rehabilitation Presented by: Robert P. Kelly, P.E. Director Of Engineering City Of Westlake James J. Smolik, P.E. Engineer-City Of Westlake		Manholes Take Center Stage in Chicago $60 Million project under way using advanced mortar for rehab work.
	Anti-Microbial Additive Helps Concrete Survive in Sewer Project		Preventing Sewer Corrosion Precasters take biology lessons to increase the life of concrete sewer systems Reprinted with permission Public Works Magazine
	SCIENCE BEHIND IT Reprinted with permission CoatingsPro Magazine		Wastewater System Design and Evaluation As Simple as A,B,C.....Z
	Corrosion Control in Concrete Pipe and Manholes		Innovative anti-microbial product for a challenging concrete pipe installation Reprinted with permission: CPI – Concrete Plant International
	Mitigating the Corrosion of Concrete Pipe and Manholes