Utilization of lignite ash in concrete mixture

Journal Article · Fri Dec 01 00:00:00 EST 1995 · Cement and Concrete Research

DOI:https://doi.org/10.1016/0008-8846(95)00155-7· OSTI ID:178304

Demirbas, A; Karslioglu, S; Ayas, A ^[1]

---

1. Technical Univ. of Black Sea, Trabzon (Turkey). Dept. of Chemistry

In this article 11 ashes from various Turkish lignite sources were studied to show the effects upon lignite ash quality for use as a mineral admixture in concrete. The lignite ashes were classified into two general types (Class A and Class B) based on total of silica, alumina, and iron oxide. Total content of the three major oxides must be more than 50% for Class A lignite ash and more than 70% for Class B lignite ash. When 25% of the cement was replaced by LA-1 (Class A) lignite ash, based on 300 kg/m{sup 3} cementitious material, the 28-day compressive strength increased 24.3% compared to the control mix. The optimal lignite ash replacement was 25% at 300 kg/m{sup 3} cementitious material.

• OSTI ID: 178304
• Journal Information: Cement and Concrete Research, Vol. 25, Issue 8; Other Information: PBD: Dec 1995
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
36 MATERIALS SCIENCE
ASHES
WASTE PRODUCT UTILIZATION
CONCRETES
COMPRESSION STRENGTH
TURKEY
SILICON OXIDES
ALUMINIUM OXIDES
IRON OXIDES
CONCENTRATION RATIO
FOSSIL-FUEL POWER PLANTS