Carbonate rocks as fillers in blended cements: Physical and mechanical properties

Barsi, Antonela Di Salvo; Marchetti, Guillermina; Trezza, Mónica Adriana; Irassar, Edgardo F.

doi:10.1016/j.conbuildmat.2020.118697

Cited by 21 publications

(13 citation statements)

References 38 publications

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“…Comparing the WFT values of OPC1 with those of the binary blended cements, it is evident that 0.2 LF and 0.2 DF always increase the WFT of OPC1, due to the effective reduction of voids, and also the increase in the surface area is proportionally lower than the increase in the excess of water, mainly for low w/c ratio. For 0.2 MK up to a w/c ratio of 0.8, the same behavior occurs as for 0.2 LF and 0.2 DF, and once this w/c ratio is exceeded, the WFT decreases due to the increase in the specifi c surface area is greater than the increase in excess water (8,9,17). For 0.2 MI, the WFT values are always lower than those corresponding to OPC1, especially for a high w/c ratio owing to the decrease in microstructure density (Fig.…”

Section: Microstructure Density and Water Layer Thicknessmentioning

confidence: 61%

“…The incorporation of LF, DF, and MK increases the microstructure density of the OPC while the addition of MI decreases it, for all replacements. For LF and DF, the maximum value is reached for 40 and 50% replacement, (8,9,17). Dla 0,2 GP wielkości GWW są zawsze mniejsze respectively, and for MK the maximum occurs in the 10-20 % range then the microstructure density decreases.…”

Section: Microstructure Density and Water Layer Thicknessmentioning

confidence: 93%

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Particles spasing of supplementary cementitious materials in binary blended cements

et al. 2021

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The effect of limestone filler [LF], dolomite filler [DF], metakaolin [MK], and metaillite [MI] additives on the packing density of the binary blended cements were studied using of the water film thickness [WFT] and the optimal water demand [OWD]. The influence of these supplementary cementitious materials [SCM] on the flowability of cement pastes and mortars was analyzed and the compressive strength of mortars was discussed. The results indicate that the incorporation of these SCM on the packing density is highly related to the particle size distribution and the optimal addition of SCM to the blended cements, assures maximum packing density. The effects on flowability not only depend on packing density but of the surface area of particles and the addition of SCM enhance the compressive strength of the mortars.

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Section: Microstructure Density and Water Layer Thicknessmentioning

confidence: 61%

Section: Microstructure Density and Water Layer Thicknessmentioning

confidence: 93%

Particles spasing of supplementary cementitious materials in binary blended cements

et al. 2021

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“…It can also be seen from Figure 12 that the temperatures recorded at the same depth are different on different dates. This is because a great deal of heat is produced by the concrete during the hydration process which causes the temperature to change over time [ 31 , 32 , 33 , 34 ]. This will affect the temperature increment produced by the heating belt in the joint area.…”

Section: Resultsmentioning

confidence: 99%

Application of Fiber Bragg Grating Sensor Technology to Leak Detection and Monitoring in Diaphragm Wall Joints: A Field Study

Zhang

Chen

Zheng

et al. 2021

Sensors

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Joints between diaphragm wall panels are weak spots in wall construction. It is essential that potential leak sites are detected prior to excavation. In this study, a novel leak detection and monitoring system is presented that is based on fiber Bragg grating (FBG) sensing technology. A field study was performed in a deep excavation supported by diaphragm walls (in Hohhot, China) to validate the feasibility and effectiveness of the proposed method. Two schemes were trialed; one using pipes made of stainless steel, and one used a pipeless method. The results of the field study are presented and discussed. They show that potential leak sites in the wall joints could be determined prior to excavation using the proposed detection method. Stainless steel is a good material to use to make the detection tube because it can protect the FBG sensors and heating belts from damage and is more sensitive to water leakage. The field study provides good evidence for the feasibility of the new detection system. It also provides valuable experience for the field application of the system and has generated useful data to use in follow-up work.

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“…Comparative studies of limestone and dolostone [28,29] have demonstrated similar performance (grindability, hardness, strength). Dolostone stability was proven in cement paste containing reactive SCM [30].…”

Section: Fillersmentioning

confidence: 93%

Overview of cement and concrete production in Latin America and the Caribbean with a focus on the goals of reaching carbon neutrality

Zaccardi

Pareja²,

Rojas³

et al. 2022

RILEM Tech Lett

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Carbon neutrality to limit global warming is an increasing challenge for all industries, particularly for the cement industry, due to the chemical emission of the process. For decades, reducing the clinker factor has been one of the main strategies to reduce the carbon footprint. Additional cuttings in the clinker content of cements seem possible with the upsurge of novel supplementary cementitious materials. This potential contribution represents only a fraction of the required carbon reductions for achieving the goal of carbon neutrality in the coming decades. This paper describes the current situation of the cement industry in Latin America and the Caribbean and the global opportunities and strategies to reduce the carbon footprint of cement and concrete and their adaptation to the regional conditions. Besides describing emerging supplementary cementitious materials, the potential contributions of industrialization and quality control are discussed. Moreover, limitations related to geography and standardization are analyzed. Regional considerations are made given the specific prospects of human development.

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Carbonate rocks as fillers in blended cements: Physical and mechanical properties

Cited by 21 publications

References 38 publications

Particles spasing of supplementary cementitious materials in binary blended cements

Particles spasing of supplementary cementitious materials in binary blended cements

Application of Fiber Bragg Grating Sensor Technology to Leak Detection and Monitoring in Diaphragm Wall Joints: A Field Study

Overview of cement and concrete production in Latin America and the Caribbean with a focus on the goals of reaching carbon neutrality

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