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Rheology of Fresh Concrete - A Review | ||
| Journal of Rehabilitation in Civil Engineering | ||
| مقاله 8، دوره 9، شماره 3 - شماره پیاپی 23، آبان 2021، صفحه 118-131 اصل مقاله (931.46 K) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2021.20557.1425 | ||
| نویسندگان | ||
| Ajay Nagaraj* 1؛ Girish S2 | ||
| 1Infrastructure Construction and Management, RASTA - Center for Road Technology, V T U Bangalore. India. | ||
| 2Department of Civil Engineering, B M S College of Engineering, V T U, Bangalore - 560 019, India. | ||
| تاریخ دریافت: 15 خرداد 1399، تاریخ بازنگری: 28 آبان 1399، تاریخ پذیرش: 26 دی 1399 | ||
| چکیده | ||
| Concrete is a heterogeneous, complex composite construction material. Fresh property of concrete is a critical property with significant effect on quality , cost of construction, strength, and durability. Even to this day the workability of fresh concrete is measured by empirical test, notably by slump test in spite of its drawbacks and sometimes with misleading results with less practical significance. There is an urgent need to characterize the flow of fresh concrete b y its rheological properties based on material science approach to overcome the inadequacies of the empirical test methods. Fluid rheology approach is the most fundamental one and describes the concrete flow by at least two parameters namely yield stress and plastic viscosity by considering fresh concrete as a Bingham fluid. Understanding and controlling the two fundamental fresh properties of concrete allow for more economical and better performing concrete mixes with the use of wide range of ingredients. This paper brings out the importance of rheology and advocates the use of fundamental science approach with two parameter tests along with advantages and limitations of using rheometers. Also highlights the use of concrete shear box static tests for wide range of workability requirements with the use of new and marginal materials in concrete industry. | ||
| کلیدواژه‌ها | ||
| Bingham model؛ Concrete Rheometer؛ Concrete Shear Box؛ Rheology of Fresh Concrete | ||
| مراجع | ||
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