EFFECTS OF VOLCANIC TUFF AS A PARTIAL REPLACEMENT FOR CEMENT ON THE COMPRESSIVE STRENGTH OF CONCRETE


Ceylan H.

OXIDATION COMMUNICATIONS, vol.39, no.1, pp.338-347, 2016 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 1
  • Publication Date: 2016
  • Title of Journal : OXIDATION COMMUNICATIONS
  • Page Numbers: pp.338-347

Abstract

This study examined the use of volcanic tuff from Isparta (Turkey) Central Gelincik Village as a mineral admixture in the production of concrete. Chemically, the volcanic tuff is 80.5% SiO2, Al2O3, Fe2O3 and therefore matches the values needed for F-type fly ash in the ASTM C 618 standards, and meets the >= 70% requirement of total major oxides according to TS EN 450 standards. In the study, for concrete classes C20, C30 and C40, 9 mix samples were prepared at 10, 15 and 20% replacement rates and tested at 28 and 90 days for uniaxial compressive strength. The most suitable replacement ratio (apart from deviation in the V40/10 series) was found to be 20%. When the 20% replacement ratio is accepted, using volcanic tuff to make 1 m(3) of concrete saves 65 kg cement in C20, 84 kg in C30 and 108 kg in C40 concrete.