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Acid Attack Of Concrete Caused By Sulphur Bacteria Action Piedmont And Clendening Lakes Outlet Tunnels Muskingum Watershed Ohio
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Book Synopsis Acid Attack of Concrete Caused by Sulphur Bacteria Action, Piedmont and Clendening Lakes Outlet Tunnels, Muskingum Watershed, Ohio by : Henry T. Thornton
Download or read book Acid Attack of Concrete Caused by Sulphur Bacteria Action, Piedmont and Clendening Lakes Outlet Tunnels, Muskingum Watershed, Ohio written by Henry T. Thornton and published by . This book was released on 1977 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Acid Attack of Concrete Caused by Sulfur Bacteria Action, Piedmont and Clendening Lakes Outlet Tunnels, Muskingum Watershed, Ohio by : Henry T Thornton (Jr)
Download or read book Acid Attack of Concrete Caused by Sulfur Bacteria Action, Piedmont and Clendening Lakes Outlet Tunnels, Muskingum Watershed, Ohio written by Henry T Thornton (Jr) and published by . This book was released on 1977 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This investigation was conducted to determine the cause of extensive deterioration of concrete above the flow line in the outlet tunnels of two lakes, and to provide guidance in the development of remedial repair schemes if necessary. The cement paste was being reduced to a 'mush' consistency to depths up to 1-1/4 in. Anaerobic bacterial action was indicated by preliminary tests. Physical tests showed the original concrete to be of good quality and that some form of acid attack was in progress. Chemical tests revealed that the water contained high concentrations of sulfates and sulfides. Bacteriological tests confirmed that sulfate-reducing bacteria were present. Data furnished by Huntington District reveal that thermal stratification occurs during the summer causing almost complete depletion of dissolved oxygen at depths greater than 20 ft in both lakes providing an environment where sulfate-reducing bacteria are able to reduce the sulfates present in the water, producing hydrogen sulfide as a waste product. Conditions in the outlet tunnels meet the criteria for the deposition and proliferation of sulfur-oxidizing bacteria which produce sulfuric acid from the hydrogen sulfide. It is concluded that the deterioration is due to acid attack and is the final stage of a corrosive process caused by sulfur bacteria action. Attack by acid water is not indicated, since all the deterioration occurs above the line of normal flow.
Download or read book The Indian Concrete Journal written by and published by . This book was released on 1979 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Acid Attack of Concrete Caused by Sulfur Bacteria Action by : Henry T Thornton (Jr)
Download or read book Acid Attack of Concrete Caused by Sulfur Bacteria Action written by Henry T Thornton (Jr) and published by . This book was released on 1978 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fact that concrete constituents are susceptible to attack and decomposition by acids is no new topic for discussion. The process by which certain genera of anaerobic bacteria produce acids has also been documented. However, most of the literature linking these phenomena with the deterioration of concrete structures has been addressed primarily to problems associated with concrete sewer pipes, and most of the reporting was done in the 1950's. This paper was extracted from a report of a recent investigation performed for the U.S. Army Engineer District, Huntington, into the combined effects of these phenomena on structural concrete. The investigation starts with the manifestation of the problem, i.e., the concrete in the outlet tunnels of two lakes being reduced to a 'mush' consistency to depths up to 1-1/4 in. (approximately 32 mm) over a period of about 5 years. The program of investigation includes a literature review, sample collection, and physical, chemical, and bacteriological tests. It is concluded that the deterioration is due to acid attack and is the final stage of a corrosive process caused by sulfur bacteria action. Immediate and long range remedial measures are suggested for consideration for implementation at both sites. Attention is drawn to the fact that undetected deterioration of other concrete structures may be in progress. (Author).
Book Synopsis Acid Attack of Concrete Caused by Sulfur Bacteria Action by : Henry T. Thornton
Download or read book Acid Attack of Concrete Caused by Sulfur Bacteria Action written by Henry T. Thornton and published by . This book was released on 1978 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ohio Journal of Science written by and published by . This book was released on 1916 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes book reviews and abstracts.
