Time-Dependent Deformation of Concrete and Its Uncertainty
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'William Hakala', 'PO_EMAI': None, 'PO_PHON': None}
This research program will lead to an improved mathematical model for           creep and shrinkage of concrete, its probabilistic aspects, and its             effects in structures.  Constitutive relation, which takes into account         strain-softening due to fracturing at variable humidity and                     stress-dependence of shrinkage and thermal expansion coefficients, will         be developed.  Creep tests at various moisture conditions and high              temperatures will be conducted with six-inch cylinders in a unique,             large triaxial-torsional testing machine with temperature control.              Also tested will be creep of small hollow cylinders under                       triaxial-torsional load in which fracturing due to humidity variations          is suppressed by prestress.  Effects of cracking on the overall drying          diffusivity of concrete will also be measured.  Numerical algorithms            for step-by-step finite element analysis will be formulated and                 verified numerically, and certain applications in structural analysis           will be demonstrated.
{'FirstName': 'Zdenek', 'LastName': 'Bazant', 'PI_MID_INIT': 'P', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Zdenek P Bazant', 'EmailAddress': 'z-bazant@northwestern.edu', 'NSF_ID': '000467578', 'StartDate': '09/01/1985', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Northwestern University', 'CityName': 'EVANSTON', 'ZipCode': '602080001', 'PhoneNumber': '3125037955', 'StreetAddress': '633 CLARK ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Illinois', 'StateCode': 'IL', 'CONGRESSDISTRICT': '09', 'CONGRESS_DISTRICT_ORG': 'IL09', 'ORG_UEI_NUM': 'EXZVPWZBLUE8', 'ORG_LGL_BUS_NAME': 'NORTHWESTERN UNIVERSITY', 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '1442', 'Text': 'CONSTRUCTION AND INFRASTRUCTUR'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1984&All=true', 'xml': '8418489.xml'}