Effect of Additives on the Properties of Fine-Grained Concrete

Bazhenova, O. P.

doi:10.1007/978-3-030-37919-3_52

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…In this case, it is necessary to adjust and find the optimal specific surface area of the mineral additive in terms of increasing chemical activity, while taking into account the properties of Portland cement, superplasticizer and fine aggregate used [10][11][12][13]. It should be noted that the transition to high-quality concrete production significantly expands the scope of fine-grained concrete application, both in its functional purpose and in expanding the mineral and raw material base [14]. The latter is very important for Yakutia, where its geographical remoteness, lack of transport infrastructure, and severe climate conditions significantly reduce the effectiveness of using imported building materials, even transported only within Yakutia, which significantly increases construction costs.…”

Section: Intorductionmentioning

confidence: 99%

Investigation of the Use of Micronized Dunite Additive for Fine-Grained Concrete

Moskvitin¹,

Moskvitina²,

Vasilyeva

et al. 2023

MSF

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Securing dense concrete structure and the intensification of cement hydration processes plays an important role in ensuring high concrete strength. The results of the applicability of dunite magnesian rocks of Central Aldan (Yakutia) for concrete production are presented. Petrographic and thermographic studies are conducted for the preliminary preparation of the charge. Pre-firing, fine intergrinding, and additional mechanical activation of the charge were applied. It is found that finely ground and pre-fired magnesium silicates act as both a micro-filler contributing to increased stone density and an active agent in forming robust crystallization structure. It is established that the use of pre-fired dunite powder with specific surface area of 8000 ± 200 cm2/kg in combination with the SP-1 superplasticizer allows obtaining autoclaved reactive powder concrete with a strength grade of up to B45.

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