Performance of portland limestone cements : cements designed to be more sustainable that include up to 15% limestone addition.

Details

• Alternative Title:
  Performance of portland limestone cements : cements designed to be more sustainable that include up to 15 percent limestone addition
• Creators:
  Barrett, Timothy J. ; Sun, Hongfang ; Weiss, W. Jason
• Corporate Creators:
  Purdue University. Joint Transportation Research Program
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Air Voids Chemical Properties Limestone Physical Properties Portland Cement Shrinkage Sustainable Development
• Publication/ Report Number:
  FHWA/IN/JTRP-2013/29
• Resource Type:
  Tech Report
• Geographical Coverage:
  Indiana
• Corporate Publisher:
  Indiana. Dept. of Transportation
• Abstract:
  In 2009, ASTM and AASHTO permitted the use of up to 5% interground limestone in ordinary portland cement (OPC) as a part of ASTM
  
  C150/AASHTO M85. When this project was initiated a new proposal was being discussed that would enable up to 15% interground
  
  limestone to be considered in ASTM C595/AASHTO M234 cement. This project was initiated to provide rapid feedback to INDOT for use
  
  in discussions regarding these specifications (this has become ASTM C595/AASHTO M234). PLC is designed to enable more sustainable
  
  construction which may significantly reduce the CO2 that is embodied in the built infrastructure while extending the life of cement
  
  quarries. The physical and chemical properties of the cementitious materials used in this study were examined. PLC is typically a finer
  
  cement (10 to 30% Blaine fineness) with a reduction in the coarse clinker particles (>20μm) and an increase in fine particles which are
  
  primarily limestone. Isothermal calorimetry and chemical shrinkage results imply that these PLC materials have a similar or slight greater
  
  reaction and would be able to be used interchangeably with OPC in practice as it relates to the rate of reaction. The PLC mortars
  
  exhibited relatively similar activation energies compared to the corresponding OPCs allowing the maturity method to be used by INDOT
  
  for both the PLC and OPC systems. The mechanical properties of OPC and PLC were generally similar with the PLC typically having slightly
  
  higher early age strengths but similar 28 day strengths. No significant change in drying shrinkage or restrained shrinkage cracking was
  
  observed for the PLC when compared with OPC (Barrett et al. 2013). The PLC has similar volumes of permeable voids as the OPC. The
  
  chloride diffusion coefficients in the PLC systems may range from 0 to 30% higher than the OPCs. The PLC showed synergistic benefits
  
  when paired with fly ash. Based on the available literature and available testing results INDOT could consider PLC, as specified in
  
  accordance with ASTM C‐595/AASHTO M 240, to be a suitable option for use in INDOT concrete applications.
  
  
• Format:
  PDF
• Funding:
  SPR-3611
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:efef95989fd4da96fa3591646026e86c4b8af67f88f90473b775c08da7aa6e5e
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27737/dot_27737_DS1.pdf
• File Type:
  [PDF - 20.63 MB ]