Modeling of Hydration, Strength Development, and Optimum Combinations of Cement-Slag-Limestone Ternary Concrete

다국어 초록 (Multilingual Abstract)

Slag can increase late age strength of concrete, but impairs the concrete early-age strength due to low reactivity. Limestone powder can increase early-age strength, but impairs late-age strength due to dilution effect. The combination of slag and limestone powder can produce a composite concrete with adequate strength at both early ages and late ages. This study shows an integrated hydration-strength-optimization model for cement-slag-limestone ternary blends. First, a blended hydration model is put forward for simulating the hydration of composite binder containing slag and limestone powder. Reaction degrees of individual component of binders are calculated using this hydration model. Second, the gel-space ratio of ternary blended concrete is determined based on reaction degrees of composite binder and mixing proportions. Moreover concrete compressive strength is calculated using gel-space ratio. Third, based on parameters analysis, the isoresponse curves regarding strength of concrete are calculated. The optimum combinations of cement, slag, and limestone powder at different ages are calculated. The proposed numerical procedure is valuable for optimum strength design of cement-slag-limestone ternary concrete.

목차 (Table of Contents)

• Abstract
• 1. Introduction
• 2. Simulation of Hydration of Cement-Slag-Limestone Ternary Blends
• 3. Verifications of Proposed Model
• 4. Conclusions
• References

참고문헌 (Reference)

1 Hoshino, S., "XRD/rietveld analysis of the hydration and strength development of slag and limestone blended cement" 4 (4): 357-367, 2006

2 Carrasco, M. F., "Strength optimization of tailor-made cement with limestone filler and blast furnace slag" 35 (35): 1324-1331, 2005

3 Menendez, G., "Strength development of ternary blended cement with limestone filler and blast-furnace slag" 25 (25): 61-67, 2003

4 Maekawa, K., "Multi-scale modeling of structural concrete" Taylor & Francis 2009

5 Bentz, D. P., "Modeling the influence of limestone filler on cement hydration using CEMHYD3D" 28 (28): 124-129, 2006

6 Wang, X. Y., "Modeling of hydration, compressive strength, and carbonation of portland-limestone cement (PLC) concrete" 10 (10): 115-131, 2017

7 Ghrici, M., "Mechanical properties and durability of mortar and concrete containing natural pozzolana and limestone blended cements" 29 (29): 542-549, 2007

8 Bonavetti, V., "Limestone filler cement in low w/c concrete: A rational use of energy" 33 (33): 865-871, 2003

9 Lothenbach, B., "Influence of limestone on the hydration of Portland cements" 38 (38): 848-860, 2008

10 Mounanga, P., "Improvement of the early-age reactivity of fly ash and blast furnace slag cementitious systems using limestone filler" 44 (44): 437-453, 2011

11 Weerdt, K. D., "Hydration mechanisms of ternary Portland cements containing limestone powder and fly ash" 41 (41): 279-291, 2011

12 Aqel, M., "Hydration kinetic and compressive strength of steam-cured cement pastes and mortars containing limestone filler" 113 (113): 359-368, 2016

13 Lee, H. S., "Evaluation of compressive strength development and carbonation depth of high volume slag-blended concrete" 124 (124): 45-54, 2016

14 Papadakis, V. G., "Effect of supplementary cementing materials on concrete resistance against carbonation and chloride ingress" 30 (30): 291-299, 2000

15 Antoni, M., "Cement substitution by a combination of metakaolin and limestone" 42 (42): 1579-1589, 2012

16 Ipavec, A., "Carboaluminate phases formation during the hydration of calcite-containing portland cement" 94 (94): 1238-1242, 2011

17 Gao, Y., "A microscopic study on ternary blended cement based composites" 46 (46): 28-38, 2013