Influence of supplementary cementitious materials on engineering properties of high strength concrete

Johari, Megat Azmi Megat; Brooks, J. J.; Kabir, Shahid; Rivard, Patrice

doi:10.1016/j.conbuildmat.2010.12.013

Cited by 390 publications

(102 citation statements)

References 19 publications

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“…This is believed to be higher WA of both porous RGS and RA compared to natural aggregates has lead to higher loss of workability due to increased water demand which is in agreement with previous studies [19][20][21][22][23][24][25][26]. Concrete compressive and flexural strengths are of great importance as these properties are utilised to specify structural concrete members within design parameters.…”

Section: 1supporting

confidence: 73%

“…However, it was observed that CEM II/B-M cement mixes indicated similar results at some point of the test. This could be due to better dispersion and smooth and dense surface characteristics of GGBS which absorbs less water over time [20]. 40 N/mm 2 design strength CEM II/B-M cement NAC mixes with the highest w/c ratio provided similar results as corresponding CEM I concrete had higher w/c ratio amongst concretes.…”

Section: 1supporting

confidence: 65%

“…This can be attributed to smooth texture of GGBS and higher SP demand, in comparison to NAC mixes and CEM I cement RAC mixes. This then dissipated cohesive properties of SF concrete by dispersing the cement and SF particles through its adsorption and electric repulsion mechanism which increased the fluidity of concretes as stated previously by Johari [20]. In contrast with CEM II/B mixes, the effect of w/c was obvious on CEM V mixes.…”

Section: 1mentioning

confidence: 85%

“…The use of CMCs has shown to reduce early strength of concrete but to improve long term mechanical performances [19][20][21][22][23]. However, the effect of CMCs on concrete durability is still ambiguous.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies [20,25,34,37] revealed that use of CMC reduces the porosity of concrete due to pozzolanic reactions provided by the CMC. Thomas and Setien [38] stated increase in ISAT as RA content increases.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: 1supporting

confidence: 73%

Section: 1supporting

confidence: 65%

Section: 1mentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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Ternary mixes with high mineral additions contents and corrosion related properties

Alonso¹,

Calvo

Sánchez³

et al. 2012

Materials & Corrosion

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The choice of blended cements and materials with cementitious properties in concrete is currently seen as a choice that increases the environmental sustainability of the construction industry. The developments with non‐traditional binders (such as the simultaneous incorporation of several types of supplementary cementitious materials) have highlighted new challenges to be researched. In the present paper ternary binders were prepared by mixing ordinary Portland cement (OPC) plus two blended components: low calcium fly ash, blast furnace slag, and/or limestone filler. Several physical and mechanical properties of ternary blend systems have been analyzed in mortar form at several curing ages: 2, 7, 28, and 90 days. Additionally preliminary tests of corrosion performance of reinforcement in these types of mixes have been considered. The results indicate that the use of appropriate content components in ternary blends will allow binders to fulfill the specified mechanical requirements. The best results are obtained when two additions with antagonist properties are mixed, as fly ashes and slags or slags and filler limestone. Besides, certain influence of the effect on durability performance is detected, in particular associated with the stability of the passive state and corrosion of reinforcements in presence of chlorides.

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Prospective of sugarcane bagasse ash for controlling the alkali‐silica reaction in concrete incorporating reactive aggregates

Abbas

Sharif²,

Ahmed

et al. 2019

Structural Concrete

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Sugarcane bagasse ash (SBA) is a supplementary material widely used around the world for improving mechanical and durability properties of concrete. Main aim of this study was to examine the potential of SBA for controlling alkali-silica reaction (ASR) in concrete incorporating reactive aggregates. SBA and reactive aggregates were acquired from local industry and quarry. Mortar bar specimens were cast to investigate various dosages of SBA (i.e., 10, 20, 30, and 40% by cement weight) for mitigating the alkali-silica reactivity expansion as per ASTM C1260. Petrography analysis of aggregates revealed the presence of deleterious minerals, which are prone to ASR. Strength activity index and thermal analysis results confirmed the pozzolanic activity of SBA. Mortar bar results showed 20 and 40% decrease in ASR expansion for specimens incorporating 10 and 40% of SBA by cement weight, respectively. Moreover, scanning electron microscopy analysis showed no sign of cracks due to ASR for specimens incorporating SBA. The improved behavior of specimens with SBA addition was due to alkali absorption and dilution process leading to low CaO/SiO 2 ratio, confirmed through energy disperse X-ray spectroscopy. Therefore, it can be envisioned that full-scale implementation of SBA addition in concrete mixtures could mitigate land filling of this by-product and lead toward the development of eco-friendly and sustainable technique for controlling the ASR associated damages in concrete structures. K E Y W O R D Saggregates, alkali-silica reaction, durability, mortar bar, sugarcane bagasse ash

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Influence of supplementary cementitious materials on engineering properties of high strength concrete

Cited by 390 publications

References 19 publications

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

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

Ternary mixes with high mineral additions contents and corrosion related properties

Prospective of sugarcane bagasse ash for controlling the alkali‐silica reaction in concrete incorporating reactive aggregates

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