Use of binary and ternary blends in high strength concrete

Erdem, Tahir Kemal; Kırca, Önder

doi:10.1016/j.conbuildmat.2007.03.026

Cited by 123 publications

(63 citation statements)

References 13 publications

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“…Results were in agreement with the previous studies [2-3, 5-10, 13-14] that binary and ternary blend slag cement concretes had lower early strengths comparing to corresponding control mixes even though CEM II and CEM V cement concretes had either similar or lower w/c except 40 N/mm 2 design strength CEM II/B-M cement concrete. Results showed that strength decreases gradually as the replacement level increased as reported earlier [2,5,7]. This may be attributed to the fact that PC was substituted by mineral admixtures which lead to reduction in the available CaO content.…”

Section: Compressive Cube Strengthsupporting

confidence: 75%

“…Extensive research carried out on the use of GGBS in combination with PC and other cementitious constituents in concretes indicated that lower early compressive strength due to slower hydration rate of GGBS [2][3][4][5][6][7][8][9][10][11][12]. The lower early strength reported in the existing studies have become more obvious as the replacement levels, on mass basis, increases [2,8].…”

Section: Introductionmentioning

confidence: 99%

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Portland slag and composites cement concretes: engineering and durability properties

Bostancı

Limbachiya

Kew

2016

Journal of Cleaner Production

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The use of different cementitious main constituents is permitted within the BS EN 197-1 for use in concrete construction. The selection of cement types made depends on requirement of enhanced engineering and durability properties of concrete as well as exploiting potential for producing environmentally friendly concretes for practical applications. The main results of a laboratory experimental programme aimed at examining the performance of Portland-slag and composite cement (CEM II/B-S, CEM II/B-M, CEM V/A and CEM V/B) concrete mixes designed for equivalent 28-day compressive cube strengths of 40 and 50 N/mm 2 are reported in paper. The effect of up to 30-50% of ground granulated blast-furnace slag (GGBS) and its' combination with the silica fume (SF) and fly ash (FA) -within the BS EN 197-1 permitted limits-on fresh, engineering and durability properties have been established and its suitability for use in a range of practical applications was assessed.The loss of workability in all mixes was of a uniform nature and was found to be more for CEM V/B concrete mixes. Studies of hardened concrete properties, comprising bulk engineering properties (compressive cube and cylinder strength, flexural strength, drying shrinkage) and durability (initial surface absorption, carbonation rates) showed enhanced performance for Portland-slag and composite cement concrete mixes of equivalent strength, except resistance to carbonation.Keywords: Carbonation, drying shrinkage, durability, fly ash, ground granulated blast-furnace slag, initial surface absorption, mechanical properties, Portland cement, silica fume Bullet points:Lower w/c ratios did not have any influence on minimizing the early strength loss for equivalent 28-day strength concretes.Drying shrinkage results showed that the contribution of pozzolanic reactions for Portlandslag and composites cement concretes takes place after 14 days.Portland-composite cement concretes (PC+GGBS+SF) with higher w/c ratio showed improved pore structure.Carbonation resistance was observed to be linked with the loss of workability over time.

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Section: Compressive Cube Strengthsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Portland slag and composites cement concretes: engineering and durability properties

Bostancı

Limbachiya

Kew

2016

Journal of Cleaner Production

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“…It shows that as the percentage replacement level of OPC with SF increases, the strength increase for all w/b ratios. It attributes to fast pozzolanic reaction at early age and filler effect of SF (Erdem and Kırca 2008). …”

Section: Compressive Strength 421 Compressive Strength Of Concrete mentioning

confidence: 99%

Effect of Relative Levels of Mineral Admixtures on Strength of Concrete with Ternary Cement Blend

Mala

Mullick

Jain

et al. 2013

Int J Concr Struct Mater

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In the present scenario to fulfill the demands of sustainable construction, concrete made with multi-blended cement system of OPC and different mineral admixtures, is the judicious choice for the construction industry. Silica fume (SF) and fly ash (FA) are the most commonly used mineral admixtures in ternary blend cement systems. Synergy between the contributions of both on the mechanical properties of the concrete is an important factor. This study reports the effect of replacement of OPC by fly ash (20, 30, 40 and 50 % replacement of OPC) and/or silica fume (7 and 10 %) on the mechanical properties of concrete like compressive strength and split tensile strength, with three different w/b ratio of 0.3, 0.4 and 0.45. The results indicate that, as the total replacement level of OPC in concrete using ternary blend of OPC ? FA ? SF increases, the strength with respect to control mix increases up to certain replacement level and thereafter decreases. If the cement content of control mixes at each w/b ratio is kept constant, then as w/b ratio decreases, higher percentage of OPC can be replaced with FA ? SF to get 28 days strength comparable to the control mix. A new method was proposed to find the efficiency factor of SF and FA individually in ternary blend cement system, based on principle of modified Bolomey's equation for predicting compressive strength of concrete using binary blend cement system. Efficiency factor for SF and FA were always higher in ternary blend cement system than their respective binary blend cement system. Split tensile strength of concrete using binary and ternary cement system were higher than OPC for a given compressive strength level.

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“…Gesoglu [15] stated that the relationship between FA and workability loss could be attributed to the presence of FA when used in binary and ternary cements increased viscous characteristics of concretes. Erdem [16] also investigated that silica fume (SF) concretes may require more water as the SF increases due to SF has higher surface area, which this could be compensated by SP utilization. Tu and Chen [17] investigated that RA with higher absorption capacity comparing to natural aggregates have a slight influence on the concrete workability.…”

Section: Introductionmentioning

confidence: 99%

Portland-composite and composite cement concretes made with coarse recycled and recycled glass sand aggregates: Engineering and durability properties

Bostancı

Limbachiya

Kew

2016

Construction and Building Materials

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Sustainable development approach demands the use of environmentally friendly materials. One possible way to encourage sustainable approach is via use of Portland cement (PC) replacement through use of permitted cement constituents in conformity with BS EN 197-1, to lower carbon footprint, and use of recycled aggregates as permitted within BS 8500, to encourage sustainability. Thus, this research study aimed to produce low carbon and sustainable concrete. For this aim, engineering and durability properties of equal 28-day design strength (40 and 50 N/mm 2 ) concretes made with Portland-composite and composite cements, CEM II/B-M and CEM V/A respectively, and partially substituted coarse recycled (RA) and washed recycled glass sand (RGS), 25% and 15% respectively, aggregates was investigated. The loss of workability was found to be larger for particularly CEM V/A and recyled aggregate concrete (RAC) mixes. Studies of hardened concrete properties, comprising bulk engineering properties (compressive cube and cylinder strength, flexural strength, drying shrinkage) and durability (initial surface absorption) showed enhanced performance for CEM II/B-M and CEM V/A mixes of equivalent strength natural aggregate concrete mixes (NAC), except resistance to carbonation. However, the use of CEM II/B-M and CEM V cements in RAC mixes slightly reduced the engineering and durability properties compared to corresponding NAC mixes.Keywords: Carbonation, initial surface absorption, drying shrinkage, fly ash, ground granulated blast-furnace slag, silica fume, recycled glass sand, coarse recycled aggregate Bullet points:Use of CEM II/B-M and CEM V/A cements and coarse recycled aggregates and recycled glass sand in concrete production increased the required superplasticizer demand to achieve the similar consistency.CEM II/B-M cement recycled aggregate concrete mixes indicated either similar or slightly better loss of workability over time compared to corresponding CEM I cement RAC mix.The partial substitution of natural coarse and fine aggregates by 25% coarse recycled and 15% recycled glass sand aggregates reduced the compressive cube strength of concrete approximately by 10%.Recycled aggregates concrete mixes showed dramatically lower compressive cylinder strength results compared to conventional natural aggregate concrete mixes.Drying shrinkage results showed that the contribution of pozzolanic reactions for Portlandslag and composites cement concretes takes place after 14 days.CEM II/B-M cement mixes indicated lower ISAT-10 values as the design strength class increased.Carbonation penetration results showed improvement as the design strength increased for the same cement type concrete mixes.

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Use of binary and ternary blends in high strength concrete

Cited by 123 publications

References 13 publications

Portland slag and composites cement concretes: engineering and durability properties

Portland slag and composites cement concretes: engineering and durability properties

Effect of Relative Levels of Mineral Admixtures on Strength of Concrete with Ternary Cement Blend

Portland-composite and composite cement concretes made with coarse recycled and recycled glass sand aggregates: Engineering and durability properties

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