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03384aam a2200445Ia 4500 001 13676886065611E8AD8CF06897128E48 003 SILO 005 20180131010242 008 120628s1995 iaua bt 000 0 eng d 035 $a (OCoLC)796988683 040 $a UIG $b eng $c UIG $d OCLCF $d OCLCO $d OCLCQ $d UIG $d NUI $d UtOrBLW $d SILO 043 $a n-us-ia $0 http://id.loc.gov/vocabulary/geographicAreas/n-us-ia 088 $a HR-358 100 1 $a Schlorholtz, S. $q (Scott), $e author. $0 http://id.loc.gov/authorities/names/no94036110 245 10 $a Evaluation of microcracking and chemical deterioration in concrete pavements / $c S. Schlorholtz, J. Amenson. 264 1 $a [Ames, Iowa] : $b Engineering Research Institute, Iowa State University, $c 1995. 300 $a iii, 36 pages : $b illustrations ; $c 28 cm 500 $a "February 28, 1995." 500 $a Depository. $5 IaU 504 $a Includes bibliographical references (pages 34-36). 513 $a Phase II progress report. 520 $a The major objective of this research project is to investigate the chemistry and morphology of portland cement concrete pavements in Iowa. The integrity of the various pavements is being ascertained based on the presence or absence of microcracks, the presence or absence of sulfate minerals, and the presence or absence of alkali-silica gel(s). Work is also being done on quantifying the air content of the concrete using image analysis techniques since this often appears to be directly related to the sulfate minerals that are commonly observed in the pavement cores. The second year of this project has been spent finalizing the procurement of the research equipment that was necessary for completing this project. Major equipment delays and subsequent equipment replacements have resulted in significant delays. However, all these details have been resolved and the equipment is currently in place and fully operational. To date, sixty-three concrete specimens have been obtained and are currently ready for analysis. Additional test specimens were obtained from Iowa DOT research project HR-327, entitled "Evaluation of the Chemical Durability of Iowa Fly Ash Concretes." Approximately 20% of the core specimens have been studied in the SEM. Current estimates indicate that the project will be completed on time. 530 $a Also available online. 536 $a Sponsored by the Highway Division of the Iowa Department of Transportation and the Iowa Highway Research Board. $d ISU-ERI-95-411 $d ERI project 3711 $d ISU-ERI-95-411 650 0 $a Pavements, Concrete $x Deterioration $z Iowa. 650 0 $a Pavements, Concrete $x Cracking $z Iowa. 650 7 $a Pavements, Concrete $x Cracking. $2 fast $0 (OCoLC)fst01055539 650 7 $a Pavements, Concrete $x Deterioration. $2 fast $0 (OCoLC)fst01055545 650 07 $a Alkali silica reactions. $2 trt 650 07 $a Concrete pavements. $2 trt 650 07 $a Deterioration. $2 trt 650 07 $a Pavement distress. $2 trt 651 7 $a Iowa. $2 fast $0 (OCoLC)fst01205835 700 1 $a Amenson, J. $q (Jerry) 710 1 $a Iowa. $b Highway Research Board. $0 http://id.loc.gov/authorities/names/n82206062 710 1 $a Iowa. $b Highway Division. $0 http://id.loc.gov/authorities/names/n80035363 941 $a 2 952 $l IAOX771 $d 20240710103211.0 952 $l OVUX522 $d 20180131071340.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=13676886065611E8AD8CF06897128E48Initiate Another SILO Locator Search