Identification of techniques to meet pH standard during in-stream construction : research summary.

Details

• Creators:
  Hunter Jr., James G.
• Corporate Creators:
  Morgan State University
• Subject/TRT Terms:
  • Metal culverts
  • Scour
  • Grout
  • Streams
  • pH value
  • Specifications
  • Water quality
  • Maintenance practices
  • Field studies
• Publication/ Report Number:
  SP109B4D
• Resource Type:
  Brief
• Geographical Coverage:
  Maryland
• Corporate Publisher:
  Maryland. State Highway Administration
• Abstract:
  Many of Maryland’s tributaries traverse highway infrastructure via culverts that are managed ; and maintained by SHA. These culverts are often made of galvanized steel and over time are ; subjected to scour. Concrete grout is often used as a repair material when these issues are ; identified. However, once water is allowed to inundate the freshly paved culvert, the grout ; surface can produce a dissolution effect in which elevated pH can impact downstream waters. ; The occurrence of this pH spike from grout has been reported in past projects, and has ; resulted in concerns as the pH of water may reach above the regulatory limit of 8.5.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27158/dot_27158_DS1.pdf
• File Type:
  [PDF - 81.27 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:3a0b45121b7c3f1517ff9cee5d0726410d0a5c80f9add501280781276e1e0063