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The utility of the models to establish correlation between different workability characteristics useful for quality control is also highlighted.

La formulation des bétons autoplaçants nécessite une attention particulière dans la sélection des constituants afin d'assurer un équilibre entre les propriétés contradictoires et nécessaires à l'obtention de ce matériau.

Mechanical and microstructural properties were studied at ambient temperature and after heating.

We studied compressive strength, flexural strength, bulk modulus of elasticity, porosity and permeability.

In addition to sound material selection, the mix design of self-consolidating concrete requires careful tailoring of mixture constituents to secure a proper balance between contradictory properties necessary for the successful production of such a complex material.

Mixture optimization of self-consolidating concrete often requires several trial batches to secure the required characteristics.

Six appendices from the research agency’s final report provide detailed information on the experimental program outlined in NCHRP Report 819 .

These guidelines address the selection of constituent materials, proportioning of concrete mixtures, testing methods, fresh and hardened concrete properties, production and quality control issues, and other aspects of SCC.This paper presents the transport and mechanical properties of self consolidating concrete that contain high percentages of low-lime and high-lime fly ash (FA).Self consolidating concretes (SCC) containing five different contents of high-lime FA and low-lime FA as a replacement of cement (30, 40, 50, 60 and 70 by weight of total cementitious material) are examined.The hardened properties included the compressive strength, split tensile strength, drying shrinkage and transport properties (absorption, sorptivity and rapid chloride permeability tests) up to 365 days.Test results confirm that it is possible to produce SCC with a 70% of cement replacement by both types of FA.

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