Title: Sustainable Self-Consolidating Concrete: Utilization of Limestone Powders

Author(s): Natalia Cardelino, Kimberly Kurtis, Russell Gentry

Publication: Web Session

Volume: ws_F18_Cardelino.pdf

Issue:

Appears on pages(s):

Keywords:

DOI:

Date: 10/15/2018

Abstract:
Blending limestone powder with Type III cement is becoming more common in precast applications and can contribute to sustainability by reducing clinker fraction. The greater availability of limestone powder compared to fly ash coupled with its potential to improve mix cohesion makes limestone powder a viable alternative in sustainable SCC. Concrete mixes made with limestone powders of varying particle size (3µm to 40µm) and varying limestone quantities (up to 25% cement replacement) will be evaluated. Results show improved workability with mixes containing coarsely ground limestone powders and finer ground limestone powders at cement replacement values above 15%. Early age compressive strengths of mixes with finely ground limestone powder were comparable to ordinary Portland cement (OPC) mixes and slightly lower at 25% replacement values. Drying shrinkage results exhibit comparable rates for air-cured mixes made with limestone powder. Preliminary creep results show that mixes with limestone powder experience slightly higher creep rates.