Comparative evaluation of the saving of binder WITH fine ground slag

Очкуров, В. И.; Vilenskii, M. Yu.

doi:10.1088/1757-899x/666/1/012026

Cited by 10 publications

(8 citation statements)

References 26 publications

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“…Cement concrete with fine and coarse aggregates based on rubber crumb from used car tires can have good sound-absorbing properties according to published data [17][18][19]. In addition, sound-absorbing cement composites can reduce the cost of walls by eliminating sound-absorbing layers, for example, based on polymer materials, as well as reduce the construction duration.…”

Section: Introductionmentioning

confidence: 90%

Sound-Absorbing Composites with Rubber Crumb from Used Tires

et al. 2021

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Traditional sound-absorbing materials have a number of disadvantages: low water resistance, low compressive and tensile strengths, low weather resistance, etc. Therefore, new sound-absorbing materials need to be developed with improved properties including the involvement of industrial byproducts. The influence of the grain-size composition of the rubber crumb from used car tires on the sound insulation of cement and gypsum composites was studied in the paper. The results of the study contribute to the creation of a structural material for the manufacture of sound-absorbing as well as load-bearing structures. The field of application of the developed materials is very extensive.

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Section: Introductionmentioning

confidence: 90%

Sound-Absorbing Composites with Rubber Crumb from Used Tires

et al. 2021

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“…Control of matrix structure formation allows for increasing the physical and mechanical characteristics of lightweight concrete based on OPC or on alkali-activated binders [ 34 , 35 , 36 , 37 , 38 ]. The enhancement of binder fineness increases its hydration degree, changes the matrix structure, and improves the properties of lightweight concrete based on OPC [ 39 , 40 , 41 , 42 , 43 ]. However, the number of published results concerning the effect of composition and fineness of SSBs on the properties of expanded-clay concrete is not enough.…”

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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“…From Equations (1), (3), and (5), it is clear that gypsum in CSA has an important role in the setting process and it is considered as one of the common accelerators for the early hydration of CSA [ 18 , 19 ]. The proper amount of gypsum in CSA could facilitate the formation of AFt and also notably shorten the setting time [ 20 , 21 , 22 ]. However, if an excessive dosage of gypsum is used it could produce some negative effects such as a potential risk of crack formation in the cement matrix [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Carbide Slag by Wet Grinding as an Accelerator in Calcium Sulfoaluminate Cement

Tan

et al. 2020

Materials

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In this study, wet-ground carbide slag (i.e., WGCS) was utilized as an accelerator in calcium sulfoaluminate cement (CSA) for obtaining considerably faster setting processes for some special engineering processes such as plugging projects and rapid repair engineering. The WGCS–CSA system was designed, in which the replacement ratio of CSA by carbide slag was chosen as 4%, 8% and 12%. The setting time and compressive strength were measured, and the mechanism of the system hydration was studied in detail by means of calorimetry, XRD, thermogravimetry (TG) and SEM. The results showed that WGCS shortened the setting time of cement and significantly augmented the early strength. The addition of 8% of WGCS contributed to increasing the 2-h compressive strength from 4.2 MPa to 32.9 MPa. The decrease in the setting time and the increase in the initial strength were mainly attributed to the high initial pH value of the liquid phase and the high content of calcium ions in WGCS. Both these factors contributed to the ettringite formation and, at the same time, to the transformation of the morphology at a later time. Such results testify that WGCS can be used as an accelerator in the CSA system and also that it provides a novel approach to the reutilization of carbide slag.

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Comparative evaluation of the saving of binder WITH fine ground slag

Cited by 10 publications

References 26 publications

Sound-Absorbing Composites with Rubber Crumb from Used Tires

Sound-Absorbing Composites with Rubber Crumb from Used Tires

Supersulfated Cement Applied to Produce Lightweight Concrete

Utilization of Carbide Slag by Wet Grinding as an Accelerator in Calcium Sulfoaluminate Cement

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