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    Klemm, Waldemar, “Contact Dermatitis and the Determination of Chromates in Hydraulic Cements and Concrete”, Portland Cement Association, internal report, 2000. Kuehl, Thomas, “It’s All in the Chemistry”, World Cement , September 2006, pages 95-98. Chat Now

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    In this study white cement CEM I-52.5 and white limestone cement CEM II-LL, A and B, with 15% and 25% limestone substitution, were studied. The way delayed ettringite forms, due to exposure to high temperatures (50 °C) and external sulphate attacks, was examined in the mortar samples.

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    Klemm, Waldemar A., and F. MacGregor Miller, Internal Sulfate Attack: A Distress Mechanism at Ambient and Elevated Temper- atures? PCA RD Serial No. 2125, Portland Cement Associa- tion, Skokie, Illinois (1997).

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    Cement Soundness and the Autoclave Expansion Test - An Update of the Literature. The autoclave expansion test (ASTM C 151) is used to provide an index of potential delayed expansion caused by the hydration of CaO and MgO in hydraulic cements.

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    F. MacGREGOR MILLER - Page 4 Publications 1. Tennis, Paul D., Bhattacharja Sankar, Klemm, Waldemar A., and Miller, F. MacGregor, "Assessing the Distribution of Sulfate in Portland Cement and Clinker and Its Influence

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    In this study white cement CEM I-52.5 and white limestone cement CEM II-LL, A and B, with 15% and 25% limestone substitution, were studied. The way delayed ettringite forms, due to exposure to high temperatures (50 °C) and external sulphate attacks, was examined in the mortar samples.

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    TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 76: Final Report for Early-Opening-to-Traffic Portland Cement Concrete for Pavement Rehabilitation contains the background information, experimental design, results, analysis, and conclusions of the study conducted under NCHRP Project 18-04B, “Durability of ‘Early-Opening-to-Traffic’ Portland Cement Concrete ...

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    The purpose of this review is to summarize information related to hexavalent chromium, Cr (VI), in the portland cement industry. The catalyst for initiating this project was the content restrictions and labeling/marketing of cements based on the level of Cr (VI) in cement in Europe, and the potential for a similar situation in North America in the near future.

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    Jun 11, 2018  Why Chemistry Matters in concrete by Vagn C. Johansen, Waldemar A Klemm, and Peter C. Taylor OsALFACORP. 1. Temperatura Máxima en el hormigón no debe superar los 70° “Curing concrete above certain critical temperatures may lead to the expansion and cracking associated with DEF” (delayed ettringite formation).

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    Waldemar A. Klemm Due to increasing environmental and health-related concerns, the amount of hexavalent chromium found in portland cement is coming under increasing scrutiny.

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