Influence of Portland cement and ground-granulated blast-furnace slag on bleeding of fresh mix

Yim, Hong Jae; Kim, Jae Hong; Han, Seong Ho; Kwak, Hyo–Gyoung

doi:10.1016/j.conbuildmat.2014.12.051

Cited by 11 publications

(5 citation statements)

References 27 publications

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“…Chidiac and Panesar [22] suggested a ratio of 1:4 for SL to OPC, at 0.30 water to cementitious ratio as optimum. Lower ratio of SL to OPC is encouraged as higher replacement levels might lead to shrinkage and bleeding [23,24]. In general, with improved properties and reduction in the overall embodied energy and carbon of concrete with the use of SCMs as partial replacement of OPC, higher replacement levels lead to detrimental effects on both the fresh and hardened properties.…”

Section: Supplementary Cementitious As Partial Replacement Of Opcmentioning

confidence: 99%

Green concrete: A review of recent developments

Sivakrishna¹,

Adesina

Awoyera

et al. 2020

Materials Today: Proceedings

130

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So much innovations have ensued in the concrete industry in the last decade, especially in terms of ensuring concrete sustainability and its green initiatives. A call for sustainability is imminent in the industry as the production of ordinary Portland cement (OPC) which is the main binder of concrete contributes about 8% to the world's human-induced carbon dioxide emission. In addition, the production of concrete has posed a huge threat on natural deposits of raw materials. With billions of tons of concrete expected to be produced in the coming years to meet our infrastructure demand, it is critical for other alternatives to be considered for concrete production. Such alternatives mostly fit as partial or total replacement of OPC and aggregates. This paper explored the sustainable advantage of alkali-activated binders, supplementary cementitious materials, and recycled materials as raw materials in concrete. This short review has shown that it is possible to achieve a greener concrete with enhanced properties compared to the conventional concrete with the use of new materials. Also, on the ground of economic importance, the new materials were found to have better performance than the conventional ones.

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Section: Supplementary Cementitious As Partial Replacement Of Opcmentioning

confidence: 99%

Green concrete: A review of recent developments

Sivakrishna¹,

Adesina

Awoyera

et al. 2020

Materials Today: Proceedings

130

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“…The reference designates a cementitious blend containing no filler agents, i.e., pure CAC for w/s = 0.60.While discussing water availability it should be pointed out that some of the filler containing mixtures considered herein, showed a tendency to bleed. It is important to quantify the content of such bleed water as if the mixture is to set with bleed water on the surface, this water is not uniformly available to partake in hydration -and should be discounted from consideration[ 28 ].The consolidation of the paste in the vertical direction during the plastic state also alters the packing of particles -resulting in a reduction in the solid-solid separations in the material. To better quantify bleeding effects, the bleed water exhausted to the sample surface was removed Heat Flow (mW/g determined for all mixtures considered herein, over the first 8 hours of hydration.…”

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confidence: 99%

The influence of filler type and surface area on the hydration rates of calcium aluminate cement

Puerta-Falla¹,

Kumar²,

Gómez-Zamorano

et al. 2015

Construction and Building Materials

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The addition of finely pulverized materials such as limestone and quartz has been observed to increase the reaction rates of ordinary portland cement. This study describes the effects of mineral fillers including: limestone, dolomite and quartz on the hydration rates of calcium aluminate cements. By detailed analysis of isothermal calorimetry data and application of a phase boundary nucleation and growth model, it is shown that finely ground minerals enhance reaction rates in relation to: (1) their surface area, which increases with increasing proportion of CAC replacement by a fine mineral filler, and (2) the increase in the amount of water available for CAC hydration, i.e., dilution, that occurs as the CAC is replaced by a filler. Unlike in the case of OPC, CAC hydration rates, and enhancements therein in the presence of fillers are independent of the mineral type and are only a function of available surface area.

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“…Chidiac and Panesar [ 99 , 103 ] proposed an optimal ratio of 4:1 (OPC/GGBFS) with a water to binder ratio of 0.3 and a cement to sand ratio of 1:1.5. To resolve bleeding and shrinkage issues, and to ensure a better CS, low alternative proportions and low water to binder (w/b) proportions were recommended [ 104 , 105 ]. GGBFS and fly ash were reported to initiate corrosion and increase critical corrosion.…”

Section: Common Wastes For Polymer Concretementioning

confidence: 99%

Utilization of Polymer Concrete Composites for a Circular Economy: A Comparative Review for Assessment of Recycling and Waste Utilization

Alhazmi

Shah²,

Anwar³

et al. 2021

Polymers

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Polymer composites have been identified as the most innovative and selective materials known in the 21st century. Presently, polymer concrete composites (PCC) made from industrial or agricultural waste are becoming more popular as the demand for high-strength concrete for various applications is increasing. Polymer concrete composites not only provide high strength properties but also provide specific characteristics, such as high durability, decreased drying shrinkage, reduced permeability, and chemical or heat resistance. This paper provides a detailed review of the utilization of polymer composites in the construction industry based on the circular economy model. This paper provides an updated and detailed report on the effects of polymer composites in concrete as supplementary cementitious materials and a comprehensive analysis of the existing literature on their utilization and the production of polymer composites. A detailed review of a variety of polymers, their qualities, performance, and classification, and various polymer composite production methods is given to select the best polymer composite materials for specific applications. PCCs have become a promising alternative for the reuse of waste materials due to their exceptional performance. Based on the findings of the studies evaluated, it can be concluded that more research is needed to provide a foundation for a regulatory structure for the acceptance of polymer composites.

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Influence of Portland cement and ground-granulated blast-furnace slag on bleeding of fresh mix

Cited by 11 publications

References 27 publications

Green concrete: A review of recent developments

Green concrete: A review of recent developments

The influence of filler type and surface area on the hydration rates of calcium aluminate cement

Utilization of Polymer Concrete Composites for a Circular Economy: A Comparative Review for Assessment of Recycling and Waste Utilization

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