Author(s):
1. Dragica Jevtić, Serbia
2. Aleksandar Savić, Serbia
3. Gordana Broćeta, Republic of Srpska, Bosnia and Herzegovina

Abstract:
The results of experimental tests, conducted on self-compacting concrete (SCC) made with lightweight aggregate (expanded clay) and fly ash, are presented in this paper. Three series of samples were made, with the constant quantity of cement (mc = 550 kg/m3), and different contents of fly ash (40% to 65% relative to the weight of cement). Expanded clay was separated into two fractions (0/5 and 5/10 mm). Two types of chemical admixtures were used: superplasticizer and viscosity modifier. Partial replacement of expanded clay with river stone aggregate (0/4 mm) was done in experimental series. Test results showed that SCC concrete with light aggregate have all properties of self-compactibility and bulk density lower than 1650 kg/m3. The present composites showed a satisfactory compressive strength (app. 30 MPa) and durability proven by both water permeability, and combined frost and salt resistance tests.

Key words:
self-compacting concrete,lightweight,fly ash

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
16.06.2015.

Conference:
Contemporary Materials 2015 - Savremeni Materijali

Applied paper from author