Effects of portland cement replacement with limestone on the properties of hardened concrete

Lollini, Federica; Redaelli, Elena; Bertolini, Luca

doi:10.1016/j.cemconcomp.2013.10.016

Cited by 96 publications

(48 citation statements)

References 30 publications

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“…Similar reductions but of slight less extent is seen for the mixtures with the big limestone particles (CC71 and CC57). Note that similar reductions for concrete and mortar with same limestone contents were also reported in the literature [3,6]. However, much smaller loss in the compression strengths is observed for the medium size limestone particle (CC14) if only 15% and 20% for the mortar and concrete, respectively.…”

Section: Mortars and Concretessupporting

confidence: 57%

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Development of sustainable mortar and concrete made of limestone blended cement - influence of particle size

Mumcuoglu¹,

Peled

2016

Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures

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Mortars and concretes with 20% substitution of cement by limestone were studied. Four different limestone powders having different particle diameters and surface areas were examined: one size smaller with high surface area, two sizes of larger with low surface area and one size similar to the original cement particles. It was shown that the compressive strength of the mortar and concrete made with limestone of different particle sizes were affected significantly by the surface area and size of the particles. Blended mortar and concrete made of medium limestone particle size had shown the highest density and hence the greatest compressive strength, while blended mortar and concrete with the fine limestone particles, which are commonly used in the construction industry, exhibited the lowest density and hence the smallest compressive strength. By controlling the size of the limestone particles and surface area, concrete and mortars with higher compressive strength can be achieved compared to those reported in the literature with similar clinker substitution content. Therefore the current work results have not only important scientific implications but also practical ones.

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Section: Mortars and Concretessupporting

confidence: 57%

“…In the last decade, comprehensive research took place to examine limestone as a partial substitute for clinker [2][3][4][5][6]. Acceleration of the hydration process at early age with low strength and durability due to reduction of the active material was reported.…”

Section: Introductionmentioning

confidence: 99%

Development of sustainable mortar and concrete made of limestone blended cement - influence of particle size

Mumcuoglu¹,

Peled

2016

Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures

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“…Introduction of these fillers into concrete composition allows both filling of intergranular openings in cement matrix and substantial improvement of contact area between the cement stone and the filler. [8,9,10] Optimum utilization of microfillers along with the application of highly effective superplasticizers is the primary prerequisite for obtaining of high-quality fine-grained selfcompacting concretes [11 -15].…”

Section: Introductionmentioning

confidence: 99%

Self-compacting fine-grained concretes with compensated shrinkage

2017

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Abstract. This paper substantiates the efficiency of application of finegrained concrete for erection of cast-in-place concrete and reinforced concrete structures of different purpose. On the basis of analysis of experimental research results it was established that the introduction of microfillers with expansion effect to composite binder allows not only improving the rheological properties of fine-grained concrete, but also decreasing of value of shrinkage strain and improving of concrete crack resistance and durability. The analysis of the results of industrial use of fine-grained concretes with compensated shrinkage is given.

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“…In the text, specimens will be indicated by the label ''type of binder/w/b ratio/binder dosage/curing time'' (CL1 and CL2 indicate replicate specimens cured 7 days; CL3 indicates 28-day curing). 100 mm cubes were cast for the measurement of compressive strength (two replicate cubes) and results obtained after 28 days of curing are shown in Table 2 (further results can be found in [34]). 64 prism specimens, 60 mm 9 250 mm 9 150 mm, reinforced with ribbed carbon steel bars with a diameter of 10 mm and a length of 200 mm, were cast.…”

Section: Methodsmentioning

confidence: 99%

Investigation on the effect of supplementary cementitious materials on the critical chloride threshold of steel in concrete

2015

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The critical chloride threshold is a key parameter in the service life design of reinforced concrete structures exposed to chloride-bearing environments. This paper investigates the role of concrete composition, and particularly the effect of supplementary cementing materials, on the chloride threshold. To simulate real exposure conditions, ponding tests were carried out on reinforced concrete specimens with bars in free corrosion conditions and corrosion initiation was detected through corrosion potential and corrosion rate measurements. After two and a half years, the ponding was followed by an ageing period and the initiation of corrosion was further detected with anodic potentiostatic polarisation tests. Results of the tests showed several limitations of the approach based on chloride penetration and monitoring of free corrosion parameters to investigate the chloride threshold. In spite of this, a possible role of natural pozzolan and coal fly ash additions in leading to higher values of the chloride threshold and ground limestone in promoting lower values of the chloride threshold could be observed.

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Effects of portland cement replacement with limestone on the properties of hardened concrete

Cited by 96 publications

References 30 publications

Development of sustainable mortar and concrete made of limestone blended cement - influence of particle size

Development of sustainable mortar and concrete made of limestone blended cement - influence of particle size

Self-compacting fine-grained concretes with compensated shrinkage

Investigation on the effect of supplementary cementitious materials on the critical chloride threshold of steel in concrete

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