A comparison of intergrinding and blending limestone on reaction and strength evolution in cementitious materials

Aditya Kumar, Tandre Oey, Guillermo Puerta Falla, Ryan Henkensiefken, Narayanan Neithalath, Gaurav Sant

Research output: Contribution to journalArticleScientificpeer-review

36 Citations (Scopus)

Abstract

The use of powdered limestone is a promising approach to reduce the clinker factor of portland cements. Recent regulatory actions in the United States and Canada have allowed for portland cements to contain up to 15% limestone (mass basis). This action allows for the replacement of cement by limestone through: (1) intergrinding the cement clinker and limestone through the production process or (2) by blending the cement and limestone through the concrete batching process. While both avenues appear feasible, there is a need to compare and contrast the performance features of one approach versus the other. This paper evaluates cement pastes containing interground and blended limestone in terms of their hydration and strength evolution behavior. Experiments and numerical simulations performed within a boundary nucleation and growth (BNG) model indicate that the reaction response of interground cements can be achieved or exceeded by blended systems, depending on the characteristics of the cement and the limestone used, i.e., Type I/II, Type III or blend of Type I/II and Type III. Thus, by adjusting the cement or limestone fineness, blended systems can be proportioned to display strengths which are superior to the interground case at early ages. However, by later ages all binders show similar strengths. The results do suggest that for replacement levels up to 15% (mass-basis), intergrinding or blending are both viable strategies to reduce the clinker factors of portland cements, while maintaining early-age properties similar to pure cement formulations.
Original languageEnglish
Pages (from-to)428-435
JournalConstruction and Building Materials
Volume43
DOIs
Publication statusPublished - Jun 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

Calcium Carbonate
Limestone
Cements
Portland cement
Ointments
Hydration
Binders
Nucleation
Concretes
Computer simulation

Keywords

  • limestone
  • interground
  • blended
  • hydration
  • strength

Cite this

Kumar, Aditya ; Oey, Tandre ; Puerta Falla, Guillermo ; Henkensiefken, Ryan ; Neithalath, Narayanan ; Sant, Gaurav. / A comparison of intergrinding and blending limestone on reaction and strength evolution in cementitious materials. In: Construction and Building Materials. 2013 ; Vol. 43. pp. 428-435.
@article{0385486605894e96a3989a127a2c8363,
title = "A comparison of intergrinding and blending limestone on reaction and strength evolution in cementitious materials",
abstract = "The use of powdered limestone is a promising approach to reduce the clinker factor of portland cements. Recent regulatory actions in the United States and Canada have allowed for portland cements to contain up to 15{\%} limestone (mass basis). This action allows for the replacement of cement by limestone through: (1) intergrinding the cement clinker and limestone through the production process or (2) by blending the cement and limestone through the concrete batching process. While both avenues appear feasible, there is a need to compare and contrast the performance features of one approach versus the other. This paper evaluates cement pastes containing interground and blended limestone in terms of their hydration and strength evolution behavior. Experiments and numerical simulations performed within a boundary nucleation and growth (BNG) model indicate that the reaction response of interground cements can be achieved or exceeded by blended systems, depending on the characteristics of the cement and the limestone used, i.e., Type I/II, Type III or blend of Type I/II and Type III. Thus, by adjusting the cement or limestone fineness, blended systems can be proportioned to display strengths which are superior to the interground case at early ages. However, by later ages all binders show similar strengths. The results do suggest that for replacement levels up to 15{\%} (mass-basis), intergrinding or blending are both viable strategies to reduce the clinker factors of portland cements, while maintaining early-age properties similar to pure cement formulations.",
keywords = "limestone, interground, blended, hydration, strength",
author = "Aditya Kumar and Tandre Oey and {Puerta Falla}, Guillermo and Ryan Henkensiefken and Narayanan Neithalath and Gaurav Sant",
year = "2013",
month = "6",
doi = "10.1016/j.conbuildmat.2013.02.032",
language = "English",
volume = "43",
pages = "428--435",
journal = "Construction and Building Materials",
issn = "0950-0618",
publisher = "Elsevier",

}

A comparison of intergrinding and blending limestone on reaction and strength evolution in cementitious materials. / Kumar, Aditya; Oey, Tandre; Puerta Falla, Guillermo; Henkensiefken, Ryan; Neithalath, Narayanan; Sant, Gaurav.

In: Construction and Building Materials, Vol. 43, 06.2013, p. 428-435.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - A comparison of intergrinding and blending limestone on reaction and strength evolution in cementitious materials

AU - Kumar, Aditya

AU - Oey, Tandre

AU - Puerta Falla, Guillermo

AU - Henkensiefken, Ryan

AU - Neithalath, Narayanan

AU - Sant, Gaurav

PY - 2013/6

Y1 - 2013/6

N2 - The use of powdered limestone is a promising approach to reduce the clinker factor of portland cements. Recent regulatory actions in the United States and Canada have allowed for portland cements to contain up to 15% limestone (mass basis). This action allows for the replacement of cement by limestone through: (1) intergrinding the cement clinker and limestone through the production process or (2) by blending the cement and limestone through the concrete batching process. While both avenues appear feasible, there is a need to compare and contrast the performance features of one approach versus the other. This paper evaluates cement pastes containing interground and blended limestone in terms of their hydration and strength evolution behavior. Experiments and numerical simulations performed within a boundary nucleation and growth (BNG) model indicate that the reaction response of interground cements can be achieved or exceeded by blended systems, depending on the characteristics of the cement and the limestone used, i.e., Type I/II, Type III or blend of Type I/II and Type III. Thus, by adjusting the cement or limestone fineness, blended systems can be proportioned to display strengths which are superior to the interground case at early ages. However, by later ages all binders show similar strengths. The results do suggest that for replacement levels up to 15% (mass-basis), intergrinding or blending are both viable strategies to reduce the clinker factors of portland cements, while maintaining early-age properties similar to pure cement formulations.

AB - The use of powdered limestone is a promising approach to reduce the clinker factor of portland cements. Recent regulatory actions in the United States and Canada have allowed for portland cements to contain up to 15% limestone (mass basis). This action allows for the replacement of cement by limestone through: (1) intergrinding the cement clinker and limestone through the production process or (2) by blending the cement and limestone through the concrete batching process. While both avenues appear feasible, there is a need to compare and contrast the performance features of one approach versus the other. This paper evaluates cement pastes containing interground and blended limestone in terms of their hydration and strength evolution behavior. Experiments and numerical simulations performed within a boundary nucleation and growth (BNG) model indicate that the reaction response of interground cements can be achieved or exceeded by blended systems, depending on the characteristics of the cement and the limestone used, i.e., Type I/II, Type III or blend of Type I/II and Type III. Thus, by adjusting the cement or limestone fineness, blended systems can be proportioned to display strengths which are superior to the interground case at early ages. However, by later ages all binders show similar strengths. The results do suggest that for replacement levels up to 15% (mass-basis), intergrinding or blending are both viable strategies to reduce the clinker factors of portland cements, while maintaining early-age properties similar to pure cement formulations.

KW - limestone

KW - interground

KW - blended

KW - hydration

KW - strength

U2 - 10.1016/j.conbuildmat.2013.02.032

DO - 10.1016/j.conbuildmat.2013.02.032

M3 - Article

VL - 43

SP - 428

EP - 435

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

ER -