منابع مشابه
Recycled Materials in Portland Cement Concrete
.............................................................................................................................1 Wastes and By-Products for Use in Portland Cement Concrete.....................................2 RESEARCH OBJECTIVES ....................................................................................................3 LITERATURE SURVEY.....................................
متن کاملField Evaluation of Stringless Portland Cement Concrete Paving
This paper describes results from a study evaluating stringless paving using a combination of global positioning and laser technologies. A concrete paver manufacturer and a machine guidance solution provider developed this technology and successfully implemented it on construction earthmoving and grading projects. Concrete paving is a new area for considering this technology. A concrete paving ...
متن کاملPortland Cement Pervious Concrete: A Field Experience from Sioux City
Portland Cement Pervious Concrete (PCPC) is becoming more utilized across the U.S. due to increased requirements for stormwater management. This paper details the experience of the installation of a PCPC test section/parking area in Sioux City, Iowa. In order to evaluate a large number of mixture designs, the test section incorporated five different mixtures, each placed with and without air en...
متن کاملThe Effects of Water/Cement Ratio and Air Entraining on Portland Cement Concrete Freeze/Thaw Durability
This paper deals with the issues of air entraining and water/cement ratio in Portland Cement Concrete as related to its freeze thaw durability. Practices have been in place for nearly thirty years which demanded high early strengths in Portland Cement Concrete pavements. This paper looks at those practices, investigates the correlation between water/cement ratio and air entraining, and presents...
متن کاملDetermination of Bingham Parameters of Fresh Portland Cement Concrete Using Concrete Shear Box
ISSN 2277-5056 | © 2012 Bonfring Abstract--The workability of fresh concrete should be characterized by its rheological properties based on material science approach to overcome the inadequacies of traditional empirical tests like slump test. Generally the rheological properties of fresh concrete are described by Bingham parameters in terms of two physical quantities, namely yield stress and pl...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1912
ISSN: 0036-8733
DOI: 10.1038/scientificamerican09211912-188supp