Influence of polyolefin fibers on the strength and deformability properties of road pavement concrete

Smirnova, Olga; Kharitonov, Alexey; Belentsov, Yu. A.

doi:10.1016/j.jtte.2017.12.004

Cited by 37 publications

(22 citation statements)

References 19 publications

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“…Polycarboxylate-based superplasticizers are mostly used to obtain contemporary kinds of concrete: self-compacting concrete, high-strength concrete, high-strength strain-hardening cement-based composites, etc. One can resolve the following tasks that due to use of superplasticizer: improve workability of fresh concrete [24][25][26], regulate increase of strength at the different ages [2,[15][16][17], reduce Portland cement [27][28][29][30], increase rheological activity of additives [3,6,12], improve allocation of fibers in concrete structure [29,30]. Superplasticizer amount to gain fresh concrete with equal workability depends on the kind and quantity of ground granulated blast furnace slag (ggbfs) as it was stated in paper [6,15].…”

Section: Introductionmentioning

confidence: 99%

Fine ground granulated blast furnace slag for saving quantity of binder

2019

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Nowadays, it is acknowledged that the use of mineral additives based on ground slag is one of ways of resource saving and improvement of technical properties of cement composites. Mineral additives with fineness similar to the Portland cement fineness are often used to replace part of Portland cement. Two kinds of ultra-fine ground granulated blast furnace slag that differ in composition and fineness were studied in the paper. Water-reduction due to effect of super plasticizer in slag-Portland cement compositions with amount of slag up to 70% was studied. The results of reduction of binder quantity per 1 kg of chemical admixture due to significant water-reduction are obtained and analysed. Correlations depending on kind, amount and fineness of slags, as well as depending on mineralogical composition of Portland cement were stated. The ultra-fine mineral additives based on ground slag with high specific surface area can be used for significant reduction of compositional binder.

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Section: Introductionmentioning

confidence: 99%

Fine ground granulated blast furnace slag for saving quantity of binder

2019

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“…Ground quartz sand is used to produce high-performance concrete [2,30,31]. The presence of ground quartz sand makes it possible to obtain workable mixtures at low water dmand with a uniform distribution of micro-or microfibers [32][33][34]. Ground quartz sand with grain composition of 0.01-0.1 mm is used in the compositions of modern types of high-strength strain-hardening cement-based composites, the feature of which is very low water demand and high amount of micro-fibers [33,34].…”

Section: Introductionmentioning

confidence: 99%

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Kazanskaya¹,

Fadeeva²,

Isakovsky³

2019

IJITEE

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Quantitative parameters of influence of grain composition of ground quartz sand and its quantity on the workability and segregation of self-compacting fresh concrete were determined at the constant amount of mixing water and water-cement ratio. Ground quartz sand in the amount of 50-150 kg/m3 was added instead of fine and coarse aggregates with changing the amount of polycarboxylate superplasticizer. It is stated that the use of ground quartz sand of finer grinding provides higher values of workability at the same quantity of water and superplasticizer. Segregation of the fresh concrete occurs when using increased amount of ground quartz sand of coarser grinding and increased amount of superplasticizer. Experimental studies have shown the effectiveness of the use of ground quartz sand to obtain self-compacting fresh concrete of different classes of workability SF1 and SF2 as well as classes of segregation resistance SR1 and SR2. The results of the experiments allow to state that the use of ground quartz sand of coarser grinding leads to segregation of fresh concrete at its low workability, while the use of ground quartz sand of finer grinding allows to obtain fresh concrete with resistance to segregation.

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“…Historical masonry and plaster mixes, as a rule, are characterized by the strength class from M25 to M75. Accordingly the use of limestone is not limited to its lower strength in comparison with quartz sand [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Lime Based Dry Mixes with Carbonate Aggregates

Pukharenko¹,

Харитонова²

2019

IJITEE

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 Abstract: The use of carbonate rocks as aggregates for cement concretes and mortars is limited due to their insufficient strength and the threat of corrosion. The use of quarry dust from crushing carbonate rocks are technically and economically feasible in building compositions based on air-hardening lime. The results of the study of the effect of replacing a part of quartz sand in lime mortar by limestone and dolomite fine aggregates on the basic physical and mechanical properties of lime mortars for restoration are presented in the paper. The matrix of planning experiments, which allows increasing the informativity of the research results in order to reduce the number of experiments in the search for optimal values, is proposed. The efficiency of replacement of the quartz sand with quarry dust of carbonate rocks in the production of dry mixes for restoration is shown.

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Influence of polyolefin fibers on the strength and deformability properties of road pavement concrete

Cited by 37 publications

References 19 publications

Fine ground granulated blast furnace slag for saving quantity of binder

Fine ground granulated blast furnace slag for saving quantity of binder

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Lime Based Dry Mixes with Carbonate Aggregates

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