Mixture Proportioning of Expansive Cements
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'La Tanya Darby', 'PO_EMAI': None, 'PO_PHON': None}
Portland cement is one of the most widely used materials in the                 construction industry.  One of its inherent characteristics is                  shrinkage upon drying which may lead to formation of cracks.  In                response to this concern, expansive cements have been developed and             used in the field for several decades.  When mixed with water,                  expansive cements expand and create tensile stresses in the reinforcing         steel.  This generates compressive stresses in the concrete which               reduced the cracking potential.  However, the current procedure for             preparation of expansive cements is based on trial and error.  The              objective of this research is to evaluate the physico-chemical,                 microstructural, and micromechanical properties of expansive cements.           The research consists of both numerical modeling and experimental               evaluation to obtain an understanding of the mechanical properties of           expansive cements.
{'FirstName': 'Menashi', 'LastName': 'Cohen', 'PI_MID_INIT': 'D', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Menashi D Cohen', 'EmailAddress': 'mcohen@ecn.purdue.edu', 'NSF_ID': '000223269', 'StartDate': '07/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
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[{'Code': '1441', 'Text': 'MECHANICS'}, {'Code': '1448', 'Text': 'GEOTECHNICAL I'}]
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