Abstract

This paper presents the results of experimental investigations on mechanical properties of self compacting concrete made with local materials. The used materials were cement, aggregate and super plasticizer. Limestone powder, silica fume and blast furnace slag have been used as adjuvant in self compacting concrete (SCC). Self compacting concrete properties in fresh and hardened state are characterized and analyzed. The test results indicate the possibility to manufacture SCC with good rheological and mechanical properties using local materials.

Highlights

  • In recent years, there has been an important increase in the use of self-compacting concrete (SCC) [1,2,3,4,5,6]

  • Many studies show the advantage of mineral admixture usage in self compacting concrete (SCC); and it enables to improve the workability with a reduction of cement content [12,13,14]

  • Slump flows of 685 mm to 770 mm are typically required for SCC [25], and all the tested mixtures are in this interval

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Summary

Introduction

There has been an important increase in the use of self-compacting concrete (SCC) [1,2,3,4,5,6]. One of the most important differences between SCC and conventional concrete is the incorporation of a mineral admixture This concrete is characterized by a high amount of fines, an amount of water, a relatively low use of super plasticizers, a high deformability and good uniformity in such a way that it can flow under its own weight to completely fill the formwork and passes through the congested reinforcement without any mechanical vibration. The mineral admixtures enable to improve particle packing, to decrease the permeability and to increase the durability of concrete [15] The waste materials such as limestone powder, fly ash and granulated blast furnace slag are generally used as mineral admixtures in SCC [16,17,18,19] These add a positive impact on the timeliness and quality of concrete [7], at the same time the environmental pollution will be reduced [20]. The aim of the present work is to highlight the influence of local constituents in the composition of a SCC from the viewpoint of fresh and hardened state behavior and to develop optimized formulations with good rheological and mechanical properties

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