Effect of dispersed mineral additive on properties of mortar mixture and solution

Ilina, L.; Tulyaganov, A K

doi:10.1088/1757-899x/451/1/012031

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diopside has the highest hardness (7 on the Mohs scale) out of the considered silicate materials number that is, the highest value of the elasticity modulus. This determines the redistribution of stresses between the hardened cement paste components and the greater strengthening effect with diopside introduction [12,14]. Calcite, which forms the basis of limestone flour, has a fairly low hardness of 3 on the Mohs scale.…”

Section: Discussionmentioning

confidence: 99%

“…to the initial binders and their hydration products [10,11,12]. In addition, the effect of mineral additives is due to the fact, that they make an impact on the hydration hardening process of portland cement; prevent the microcracks propagation in it under the action of external stresses; cause the redistribution of mechanical stress between additive particles and hardened cement paste; at the same time, it is essential that the elastic modulus of additive material can be higher than artificial stone [3,11,13,14]. They can exert a mutual influence, enhancing or weakening the effect of individual components in the process of complex mineral additives containing several components are introduced into the composition of cement materials [15,16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hardening Cement Conglomerates by Mining Industries Waste

Il’ina

Mukhina²,

Semenova³

2021

SSP

View full text Add to dashboard Cite

About 3.5 billion tons of mining waste is generated annually in Russia. The task of their utilization is urgent in connection with the accumulation of large-tonnage waste of simultaneously mined rocks, enrichment waste and crushing screenings. The problem can be solved by using these wastes as mineral additives to artificial cement-based conglomerates. According to the study results it was found, that the compressive strength of hardened cement paste increased during all hardening periods, when finely dispersed mining wastes were introduced. In the early stages of hardening, limestone had a predominant effect. Introduction of diopside led to the greatest hardening together with the hardening period increase. Linear and nonlinear mathematical models, describing the dependence of cement strength on the type and amount of mineral additives, were constructed. The highest strength values of hardened cement paste, both after hardening under normal conditions for 28 days, and after heat and moisture treatment could be achieved with 7% dispersed diopside. At the same time, the hardening effect (increase in the strength of cement by 35–40%) was retained when 1/3 of the diopside in the complex additive was replaced by dispersed limestone. An increase in the content of limestone in the complex additive composition over 1/3 was impractical.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hardening Cement Conglomerates by Mining Industries Waste

Il’ina

Mukhina²,

Semenova³

2021

SSP

View full text Add to dashboard Cite

show abstract

Modeling of Cement Activity Increase by Dispersed Mineral Additives

Ilina

Mukhina

2020

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Optimal dry mixes simulating

Ilina¹,

Mukhina²,

Tulyaganov³

2020

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

When applying mortar mixes in thin layers on porous substrates, moisture is released from the mortar mix. As a result, such operational characteristics of the solution as bending strength, compressive strength, adhesion strength and crack resistance can be reduced. The introduction of modifying additives, such as: dispersed mineral additive, powder polymers and fibers, allows providing these indicators at the required level. In order to simulate the composition of the dry mix with modifying additives, multivariate design of the experiment was carried out, regression equations were obtained, statistical analysis of the proposed equations was carried out, which confirmed their significance. The verified model showed a high degree of correspondence between the values calculated by the regression equations and experimental data. The procedure of regression equations maximizing made it possible to determine the optimal composition of dry construction mixes depending on their functional purpose, hardening conditions and operation.

show abstract

Effect of dispersed mineral additive on properties of mortar mixture and solution

Cited by 3 publications

References 0 publications

Hardening Cement Conglomerates by Mining Industries Waste

Hardening Cement Conglomerates by Mining Industries Waste

Modeling of Cement Activity Increase by Dispersed Mineral Additives

Optimal dry mixes simulating

Contact Info

Product

Resources

About