Mechanical and durability properties of high performance concretes containing supplementary cementitious materials

Elahi, Ayub; Basheer, Pam; Nanukuttan, Sreejith; Khan, Qaiser uz Zaman

doi:10.1016/j.conbuildmat.2009.08.045

Cited by 232 publications

(95 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Increased compressive strength of high volume fly ash composite modified by the presence of silica fume was also confirmed by authors of [54,55,90]. Elahi et al [91] revealed that the presence of silica fume can improve compressive strength of mixes containing 40% of low-calcium fly ash starting from 7th day of hydration. According to authors of [91] explanation, it is an effect of better bonding between cement matrix and aggregate.…”

Section: Silica and Aluminosilicate Pozzolanic Materialssupporting

confidence: 51%

“…Elahi et al [91] revealed that the presence of silica fume can improve compressive strength of mixes containing 40% of low-calcium fly ash starting from 7th day of hydration. According to authors of [91] explanation, it is an effect of better bonding between cement matrix and aggregate. Results received by Yazıcı [56] confirmed that addition of silica fume into high volume fly ash composite can effectively improve compressive strength also in case when Class C fly ash was used.…”

Section: Silica and Aluminosilicate Pozzolanic Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Influence of selected activating methods on hydration processes of mixtures containing high and very high amount of fly ash

Wilińska

Pacewska

2018

J Therm Anal Calorim

View full text Add to dashboard Cite

Binders containing fly ash as cement substitute have been used for many years. Typical amount of fly ash in cement composite does not exceed 35% of mass of binder. Replacement of substantial amount of cement mass by fly ash results in retardation of hydration of binder and deterioration of some concrete properties, e.g. delay in setting time and reduction in early compressive strength. These inconveniences may be reduced using proper method of activation. In this paper, possibilities to activate binding mixtures containing high and very high amount of fly ash and low amount of Portland cement were discussed basing on the literature reports as well as on our own research results. Several activating methods were described, such as mechanical activation, exchanging of part of components of binder (cement, fly ash or both of them) by more reactive fine-grained material, chemical activation by the use of alkaline activators as well as combined methods. Possibilities of using these methods were discussed in relation to amount of fly ash introduced as replacement of cement and kind of fly ash used. Usefulness of calorimetry and thermal analysis methods was also presented.

show abstract

Section: Silica and Aluminosilicate Pozzolanic Materialssupporting

confidence: 51%

Section: Silica and Aluminosilicate Pozzolanic Materialsmentioning

confidence: 99%

Influence of selected activating methods on hydration processes of mixtures containing high and very high amount of fly ash

Wilińska

Pacewska

2018

J Therm Anal Calorim

View full text Add to dashboard Cite

show abstract

“…In addition, higher strength development of CEM II/B-M in comparison to CEM V/A mixes at pre-28 days could also be explained by both physical and chemical characteristics of SF which converted CH to CSH with its extreme fineness. This in line with previous researches [32,56]. Moreover, the effect of pozzolanic reaction was more apparent in CEM V/A mixes as comparable or slightly higher results were reported at latter ages.…”

Section: Compressive Cube Strengthsupporting

confidence: 81%

“…Even though, CEM II/B-M and CEM V/A mixes indicated similar compressive strength at 28 days for both NAC and RAC mixes. In contrast with some researches [53,56], the results showed that the contribution of the pozzolanic reactions due to CMCs presence took place at pre-28 days. It is also believed to be due to hydration of GGBS and FA is slower than PC, thus, pozzolanic reaction through CMCs and cement paste necessitates longer curing age in order to contribute to strength development.…”

Section: Compressive Cube Strengthcontrasting

confidence: 50%

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

View full text Add to dashboard Cite

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.

show abstract

“…The importance of materials quality cannot be over-emphasized in concrete durability. Elahi et al (2010) examined the mechanical and durability properties of high performance concretes containing supplementary cementitious materials and concluded that the combination of different cementitious materials and the precise choice combinations should be on the basis of the physical properties relevant to the durability and performance expected from the concrete, as well as the exposure conditions.…”

Section: Introductionmentioning

confidence: 99%

Strength and Durability Properties of Concrete with Starch Admixture

Akindahunsi

Uzoegbo

2015

International Journal of Concrete Structures and Materials

View full text Add to dashboard Cite

This paper examines some properties of concrete, such as strength, oxygen permeability and sorptivity using starch [cassava (CA) and maize (MS)] as admixtures. Concrete cubes containing different percentages of the CA and MS by weight of cement (0, 0.5, 1.0, 1.5 and 2.0 %) were cast. Compressive strength tests were carried out after 3, 7, 14, 21, 28, 56, 90, 180, 270 and 365 days of curing. Oxygen permeability and sorptivity tests were carried out on another set of concrete specimens with the same percentages of starch at 7, 28, 90, 180, 270 and 365 days. Oxygen permeability and sorptivity tests data obtained were subjected to Kruskal-Wallis one-way analysis of variance by ranks. The strength increase after 1 year over the control for CA 0.5 and CA 1.0 are 2.7 and 3.8 % respectively, while MS 0.5 and MS 1.0 gave 1.5 % increase over control. These results showed a decrease in oxygen permeability and rates of sorptivity, with concretes containing starch as admixtures giving better performance than the control concretes.

show abstract

Mechanical and durability properties of high performance concretes containing supplementary cementitious materials

Cited by 232 publications

References 13 publications

Influence of selected activating methods on hydration processes of mixtures containing high and very high amount of fly ash

Influence of selected activating methods on hydration processes of mixtures containing high and very high amount of fly ash

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

Strength and Durability Properties of Concrete with Starch Admixture

Contact Info

Product

Resources

About