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Condition Investigations of HDPE Pipe In-Service In the United States (Six States) Item Code: SN2474 Date of Publication: 2002 Price: $0.00 This study consisted of inspecting 39 High Density Polyethylene (HDPE) Pipes located in 6 different states. The diameters of the pipes ranged from 24 in. to 60 in. The inspections consisted of diameter measurements, distress documentation, alignment measurements, and still and video photography. Pipe deflection, distress and misalignment problems are recorded in tables and photographs. A significant percentage of the 39 pipe installations inspected had deflections in excess of 5% or were experiencing joint separation. Cracking and buckling were also identified, but to a lesser degree. The report contains more than 100 tables, graphs and color photographs. This report is also found on DVD021. Click for more

Stabilization of Heavy Metals in Portland Cement, Silica Fume/Portland Cement and Masonry Cement Matrices Item Code: RP348 Date of Publication: 1998 Price: $15.00 Establishes the mechanisms of heavy metals immobilization by portland cement-based solidification/stabilization (S/S) treatment. This research found that the effectiveness of stabilization is better than could be expected based on the pH effects of cement addition alone. This suggests that certain metals may actually be bound within cement hydration products. This report is also found on DVD021. Click for more

Stabilization of Heavy Metals with Portland Cement: Research Synopsis Item Code: IS007 Date of Publication: 1997 Price: $3.00 This 6-page information sheet highlights results of PCA-sponsored research in establishing the mechanisms of heavy metals immobilization by portland cement-based solidification/stabilization (S/S) treatment. Complete results will be reported in RP348. This report is also found on DVD021. Click for more

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