Sustainability of concretes with binary and ternary blended cements considering performance parameters

Cordoba, Gisela; Barquero, Manuel; Bonavetti, Viviana L.; Irassar, Edgardo F.

doi:10.1016/j.cement.2023.100077

Cited by 10 publications

(4 citation statements)

References 28 publications

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“…Additionally, several authors have investigated the integration of natural fibers into cement to enhance its mechanical properties [13][14][15]. Recognizing cement's critical role in construction, substantial efforts have been made to develop more sustainable cements [16,17] or alternative materials for replacement. Many researchers are focused on replacing a portion of cement with supplementary cementitious materials to decrease hazardous emissions [18,19].…”

Section: Introductionmentioning

confidence: 99%

A Sustainable Approach Using Beef and Pig Bone Waste as a Cement Replacement to Produce Concrete

Palomino-Guzmán,

González-López,

Olmedo-Montoya

et al. 2024

Sustainability

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Owing to the ongoing accumulation of industrial by-products, the management and disposal of waste have emerged as a significant issue. Employing these industrial wastes as an alternative to replace cement holds potential as a promising solution for conserving energy and reducing CO2 emissions. In this study, pig and beef bone powder were used as cement replacements in concrete, and the mechanical properties were studied. Bone powders were prepared from random bones collected from local slaughterhouses, butchers, and restaurants. The pig bone powder (PBP) and beef bone powder (BBP) were prepared by direct fire contact, oven-calcined for 4 h at 300 °C, crushed, and sieved to size 0.4 to 2 mm. A concrete mix design was formulated for a target compressive strength of 21 MPa at 28 days of curing. This design included three different levels of cement replacement with each type of bone powder (10%, 15%, and 20% by mass). These mixes were then evaluated and compared to a control mix without any bone powder replacement (PB-0). This study evaluated the mechanical properties via compressive strength and flexural testing. The results showed that the workability of the mixtures decreased with the increase in bone powder content. Bone powder functions as a pozzolanic substance, engaging in a chemical reaction with the calcium hydroxide in concrete to produce compounds that exhibit cement-like properties; however, an increase in bone powder content worsened the mechanical properties. The most promising results were obtained for a 10% replacement percentage of BBP and PBP, obtaining strengths of 21.15 MPa and 22.78 MPa, respectively. These are both above the design strength, with PBP concrete even exceeding the strength of PB-0 (21.75 MPa). These results showed a good agreement with the standard values and allow to use these wastes as a replacement for cement, becoming a sustainable solution to the exploitation of quarry materials and, in turn, to the problem of contamination by biological waste from the meat industry.

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Section: Introductionmentioning

confidence: 99%

A Sustainable Approach Using Beef and Pig Bone Waste as a Cement Replacement to Produce Concrete

Palomino-Guzmán,

González-López,

Olmedo-Montoya

et al. 2024

Sustainability

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“…The design of ternary blended cements is a focus of interest because this combination enhances sustainability [22], workability [23] and mechanical/durability properties [24].…”

Section: Introductionmentioning

confidence: 99%

Binary and Ternary Blended Portland Cements Containing Different Types of Rice Husk Ash

Ordoñez,

Borrachero,

Monzó

et al. 2024

Preprint

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Rice husk ash (RHA) is agricultural waste with high silica content that has had proven technical feasibility as a pozzolanic material since the 1970s. Notwithstanding, its use in mortars and concrete is limited by the standards currently utilized in some countries where RHA production is high and the aforementioned pozzolanic material is not standardized. This is the case of Spain, one of the main rice producers in Europe. Nowadays, the high pressure placed on the Portland cement production sector to reduce energy use and CO2 emissions has given rise to a keen interest shown in mineral admixtures for cement manufacturing. In this research, we intend to establish the contribution of different RHA types to final blended Portland cement properties (symbol “H” was used to identify RHA in standardized cements). The experimental results demonstrated that RHA with good pozzolanic properties (large specific surface and high amorphous silica content) had to be limited to 10% cement replacement because of the severe reduction in workability at higher replacement percentages. RHA with lower reactivity, such as crystalline RHA, or fly ash (FA), can be used to prepare binary and ternary blended cements with reactive RHA. It is possible to design the following cements: CEM II/A-H and CEM II/A-(H-V) It would also be possible to design cement (CEM II/B-(H-V) with replacement values up to 30% and the same 28-day mechanical performance observed for the Portland cement without mineral addition.

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“…The design of ternary blended cements is a focus of interest because this combination enhances the sustainability [ 22 ], workability [ 23 ] and mechanical/durability properties [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Binary and Ternary Blended Portland Cements Containing Different Types of Rice Husk Ash

Ordoñez,

Borrachero,

Monzó

et al. 2024

Materials

View full text Add to dashboard Cite

Rice husk ash (RHA) is agricultural waste with high silica content that has exhibited proven technical feasibility as a pozzolanic material since the 1970s. Notwithstanding, its use in mortars and concrete is limited by the standards currently utilized in some countries where RHA production is high and the aforementioned pozzolanic material is not standardized. This is the case in Spain, one of the main rice producers in Europe. Nowadays, the high pressure placed on the Portland cement production sector to reduce its energy use and CO2 emissions has given rise to a keen interest in mineral admixtures for cement manufacturing. In this research, we intended to establish the contributions of different RHA types to the final blended Portland cement properties (“H” is used to identify RHA in standardized cements). The experimental results demonstrated that RHA with good pozzolanic properties (large specific surface and high amorphous silica content) had to be limited to 10% cement replacement because of the severe reduction in workability at higher replacement percentages. RHA with lower reactivity, such as crystalline RHA, or fly ash (FA) can be used to prepare binary and ternary blended cements with reactive RHA. It is possible to design the following cements: CEM II/A-H and CEM II/A-(H-V). It would also be possible to design cement (CEM II/B-(H-V) with replacement values of up to 30% and the same 28-day mechanical performance as observed for the Portland cement without mineral addition.

show abstract

Sustainability of concretes with binary and ternary blended cements considering performance parameters

Cited by 10 publications

References 28 publications

A Sustainable Approach Using Beef and Pig Bone Waste as a Cement Replacement to Produce Concrete

A Sustainable Approach Using Beef and Pig Bone Waste as a Cement Replacement to Produce Concrete

Binary and Ternary Blended Portland Cements Containing Different Types of Rice Husk Ash

Binary and Ternary Blended Portland Cements Containing Different Types of Rice Husk Ash

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