Novel low emissions supersulfated cements of pumice in concrete; mechanical and electrochemical characterization

Cabrera-Luna, K.; Maldonado-Bandala, Erick; Nieves-Mendoza, Demetrio; Castro-Borges, P.; Escalante-Garcı́a, J.I.

doi:10.1016/j.jclepro.2020.122520

Cited by 32 publications

(7 citation statements)

References 39 publications

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“…In the evaluation of corrosion rates, AC impedance spectroscopy has proved more accurate than voltammetry. Cabrera-Luna et al [15] confirmed that the electrochemical properties of reinforced concrete have a certain correlation with the microstructure (test time of 180 days, 3.5% NaCl). Electrochemical impedance spectroscopy was employed to predict the corrosion reaction of an anchor with time [16].…”

Section: Introductionmentioning

confidence: 92%

Electrochemical Experiment to Evaluate the Impact of Multistage Load and Osmotic Pressure on Anchor Bolt

Sun

Wang

et al. 2022

Geofluids

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In this paper, uniaxial compression tests, multistage loading tests, and electrochemical tests were adopted to investigate the strain characteristics, failure characteristics, and electrochemical impedance of anchor bolts in a cement-gypsum composite. The uniaxial compression test results showed that the uniaxial compressive strength σ c of the three specimens were 4.4 MPa, 4.0 MPa, and 3.1 MPa, respectively, under three different osmotic pressures. The analysis of the multistage loading tests revealed that the directions of most cracks were approximately consistent with the load-bearing direction. Moreover, the existence of osmotic pressure increased the creep deformation capacity of the specimen; the greater the osmotic pressure, the stronger the deformation capacity of the specimen. The curvature relationship of the total strain curve of the three specimens was KS12 > KS22 > KS32, and the total strain curve of S32 was close to a straight line. When comparing the creep strain variation characteristics of the three specimens, it was found that, with the increase of osmotic pressure, the proportion of creep strain within the total strain gradually increased, while the proportion of corresponding elastic strain gradually decreased. Compared with the specimen before failure, the electrochemical test in the failure stage proved the variability of the Bode curves and Nyquist curves. When the osmotic pressure was 0.15 Mpa, the Bode diagram of specimen S32 in the low frequency band showed a large jump, which was stable after entering the high frequency band.

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Section: Introductionmentioning

confidence: 92%

Electrochemical Experiment to Evaluate the Impact of Multistage Load and Osmotic Pressure on Anchor Bolt

Sun

Wang

et al. 2022

Geofluids

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“…Consequently, SSC has been the subject of much research in recent years due to its ability to reduce the environmental impact of cementitious materials [7]. In fact, by using SSC as a binder, the amount of CO 2 emitted is shown to decrease by a minimum of 49% [8], since it uses a high amount of slag with minimal energy in its production. Furthermore, in order to produce SSC, the basic components are simply ground into powder of a specific fineness and uniformly blended, eliminating the need for calcination.…”

Section: Introductionmentioning

confidence: 99%

Engineered Cementitious Composites with Super-Sulfated Cement: Mechanical, Physical, and Durability Performance

Zokaei,

Siad,

Lachemi

et al. 2024

Materials

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This study aimed to bridge a research gap by exploring the utilization of super-sulphated cement (SSC) in engineered cementitious composites (ECCs) as a sustainable alternative to ordinary Portland cement (OPC)-based mixtures. The SSC was designed with slag, gypsum, and a small amount of OPC. The primary objective was to investigate the effects of incorporating SSC, both with and without fly ash (FA), at various FA/SSC ratios between 0 and 1.5. A comprehensive evaluation was conducted to assess the performance of the ECC-SSC mixtures, including the compressive and flexural strengths, ductility, ultrasonic pulse velocity, rapid chloride permeability, and drying shrinkage. Additionally, advanced microstructural evaluation techniques such as scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) analysis as well as X-ray diffraction (XRD) analysis were employed to analyze the reaction products in selected mixtures. The results showed that the ECC mixture produced with SSC exhibited comparable strength to the ECC-OPC. In general, all the SSC-based ECCs fulfilled the criteria for various engineering applications, especially when the fly ash to SSC ratios were 0 and 0.8. In addition, ECCs with FA/SSC ratios of 1.2 and 1.5 showed ultra-ductile performance higher than the control ECC. Interestingly, all the FA-based ECC-SSC presented lower shrinkage characteristics than the control OPC-based ECC.

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“…Modern methods of utilization of such wastes and by-products confirm the possibility of their use in various directions in construction, in particular, for producing low-energy non-burning binders such as supersulfated slag binders [ 6 , 7 ]. Thus, three main problems can be solved: making the production of binders based on secondary resources cheaper than the production of binders from natural raw materials [ 8 , 9 ]; ensuring environmental cleanliness and waste-free production [ 10 ]; obtaining binders with sufficiently high quality and with stability of the main characteristics [ 11 , 12 , 13 ]. …”

Section: Introductionmentioning

confidence: 99%

“…making the production of binders based on secondary resources cheaper than the production of binders from natural raw materials [ 8 , 9 ];…”

Section: Introductionmentioning

confidence: 99%

Supersulfated Cement Applied to Produce Lightweight Concrete

et al. 2021

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The physical and mechanical characteristics of expanded-clay lightweight concrete based on a supersulfated binder in comparison with lightweight concrete based on ordinary Portland cement were studied. In replacing CEM 32.5 with a supersulfated binder of 6000 cm2/g specific surface, one can increase the tensile strength in bending up to 20% and can increase the ratio of the tensile strength in bending to the compressive strength that indicates the crack resistance increase of concrete. Compressive strengths at the age of 28 days were equal to 17.0 MPa and 16.6 MPa for the supersulfated binder of 3500 cm2/g specific surface and CEM 32.5, respectively. Shrinkage deformation of hardening concrete, indicators of fracture toughness, frost resistance, and thermal conductivity were determined during the experimental works. The coefficient of thermal conductivity decreased up to 12% compared to the use of CEM 32.5. An enhancement in concrete properties was associated with the increase of supersulfated binder fineness.

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Novel low emissions supersulfated cements of pumice in concrete; mechanical and electrochemical characterization

Cited by 32 publications

References 39 publications

Electrochemical Experiment to Evaluate the Impact of Multistage Load and Osmotic Pressure on Anchor Bolt

Electrochemical Experiment to Evaluate the Impact of Multistage Load and Osmotic Pressure on Anchor Bolt

Engineered Cementitious Composites with Super-Sulfated Cement: Mechanical, Physical, and Durability Performance

Supersulfated Cement Applied to Produce Lightweight Concrete

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