Valorization of powder of volcanic rocks used as cement substitution in self-compacting concrete

Abstract

Self-compacting concrete undergoes incessant evolutions both in the improvement of its intrinsic performances and in its uses when it is combined with other materials which give it desired properties. These concretes interest more and more industrial because they have several advantages: reduce the cost, build elements with complex geometry or heavily scraped and offers a unique solution to architectural creativity. The objective of this study is to introduce as cement substitution, powder of natural volcanic rock such as granite and perlite from west of Algeria in self-compacting concretes. This is to study their performance on workability, physical-mechanical properties by destructive (compression flexure) and non-destructive tests (ultrasound, Smidth rebound hammer). Six formulations of self-compacting concretes have been developed. One control concrete without addition and four concretes containing 10% and 20% of granite powder or perlite and one concrete containing 5% of granite combined with 5% of perlite. Association of granite and perlite has generated satisfactory workability and mechanical properties which approach those of the reference concrete.

Keywords:

• Self-compacting concrete
• granite
• perlite
• ultrasonic velocity
• rebound hammer number
• mechanical strength

Disclosure statement

No potential conflict of interest was provided by the author(s).