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Simple empirical formula to estimate the main geomechanical parameters of preplaced aggregate concrete and conventional concrete
Abstract
Preplaced aggregate concrete (PAC) or two-stage concrete is a specific type of concrete successfully employed in many projects including underwater concrete structures, massive concrete structures, structures made of reinforced concrete, and improvement of concrete structures. PAC is significantly different than the conventional concrete. In this type of concrete, aggregates are initially poured into the mold, the voids between which are then filled with sand and cement mortar. Additionally, the concrete provides grain-to-grain contact for the aggregates. Since use of PAC in construction projects is growing, this paper is aimed to present experimental relations for estimation of geomechanical parameters of PAC and conventional concrete. To this end, 144 and 72 specimens made of PAC and conventional concrete, respectively, were prepared, on which uniaxial compression test, Brazilian tensile test, and point load test were conducted. Then, the resulting data from the experiments were classified into two categories, namely the regression and the test data. Moreover, experimental relations were obtained between the compressive strength, tensile strength, Young’s modulus, corrected point load index, and Poisson’s ratio for both conventional concrete and PAC, and their validity were then investigated. The results indicated that the obtained relations could be used to estimate the geomechanical properties of PAC and conventional concrete with acceptable accuracy.
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Authors (2)
-
Ali M. Rajabi prof. dr inż.
- School of Geology, Engineering Geology Department, University of Tehran
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
CONSTRUCTION AND BUILDING MATERIALS
no. 146,
pages 485 - 492,
ISSN: 0950-0618 - Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Rajabi A. M., Omidi Moaf F.: Simple empirical formula to estimate the main geomechanical parameters of preplaced aggregate concrete and conventional concrete// CONSTRUCTION AND BUILDING MATERIALS -Vol. 146, (2017), s.485-492
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.conbuildmat.2017.04.089
- Verified by:
- Gdańsk University of Technology
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