Utilization of waste concrete powder as a substitution material for cement

Kim, Yong Jic; Choi, Yun Wang

doi:10.1016/j.conbuildmat.2011.11.042

Cited by 180 publications

(54 citation statements)

References 9 publications

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“…According to other test results [14,15], the mortar content in recycled aggregates may be as high as 41% of the volume of the concrete rubble. Many studies indicate that this material cannot be used as a fine aggregate, as it significantly worsens the properties of concretes prepared with its use [16].…”

Section: Introductionmentioning

confidence: 88%

The Properties of Composites with Recycled Cement Mortar Used as a Supplementary Cementitious Material

Kalinowska-Wichrowska

Kosior‐Kazberuk

Pawluczuk

2019

Materials

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The process of recycling concrete rubble is accompanied by the formation of a large amount of fine fraction, which cannot be reused as aggregate. The results of research on the possibility of using recycled cement mortar (RCM), obtained during concrete recycling, as a cementitious supplementary material, are presented. The experimental research was carried out on the basis of two variables determining the recycling process: X 1 -temperature (range of variation 288-712 • C) and X 2 -time (range of variation 30-90 min) of thermal treatment of concrete rubble. The experiment included 10 series of new composites made with RCMs subjected to different variants of thermal treatment, and two additional control series. The best treatment parameters were determined based on the assessment of selected physical and mechanical properties of the new cement composites, as well as the analysis of characteristics and microstructure of RCM. The test results showed that proper thermal treatment of concrete rubble makes it possible to obtain a high-quality fine fraction, which has the properties of an active addition and can be used as a partial replacement for cement in mortars and concretes.

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Section: Introductionmentioning

confidence: 88%

The Properties of Composites with Recycled Cement Mortar Used as a Supplementary Cementitious Material

Kalinowska-Wichrowska

Kosior‐Kazberuk

Pawluczuk

2019

Materials

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“…In recent years, however, research has been focusing on alternatives to the natural pozzolans used in commercial cement manufacture, including new materials such as sugar cane [10,11], paper sludge [12], rice husk [13], ferroaluminate slag [14], concrete waste [15] and claybased roof tile [16][17][18] and block [19,20] discards.…”

Section: Introductionmentioning

confidence: 99%

New additions for eco-efficient cement design. Impact on calorimetric behaviour and comparison of test methods

et al. 2016

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The pursuit of new alternative construction materials has intensified substantially in recent years due to the economic, technical and environmental benefits deriving from their use. The study of the effect of such materials on heat of hydration is of particular importance, for any rise in that parameter may shorten the service life of concrete structures considerably. This paper describes an in-depth study of including clay-based sanitary ware (SW) and construction and demolition (CDW) waste as active additions in clinker manufacture and their effect on the total heat of hydration measured with isothermal and semi-adiabatic calorimetry. Clay-based SW waste induced a greater decline in the heat production rate, temperature rise and total heat than CDW waste. Moreover, the downslopes steepened with increasing replacement ratios. A linear relationship was observed between the values for total heat of hydration found with the two test methods. The type of waste, replacement ratio and the interaction between these two parameters had a significant impact on heat of hydration.

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“…In the case of a very fine fraction (grain size below 1 mm), there is still no ideal solution to allow its use on a wider scale. Several possible directions of application of this material are examined in cement composites [7][8][9][10] for example as thermally activated binder replacement [11], as mixtures for cement production [12] or as a part of geopolymers based binders [13]. Due to high demands on energy consumption and CO 2 production the most sophisticated and environmentally friendly method is when very fine fraction of recycled concrete is used in its raw form.…”

Section: Introductionmentioning

confidence: 99%

Recycling of Construction Waste Using High-Speed Milling Process: Determination of Waste Concrete

Prošek¹,

Tesárek²,

Trejbal³

et al. 2019

APP

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This paper deals with the use of high-speed milling process for recycling old concrete and direct determination of the potential of input waste. For this purpose, three different types of waste concrete were used: prefabricated railway sleeper, structural concrete of monolithic pillar and prefabricated drainage gutter. The paper directly examines the chemical and phase composition by XRF, X-Ray Diffraction (XRD), Energy Dispersive X-ray Spectrometry (EDS) and microscopic analysis, particle size distribution and pH of the recycled material. Results of those analysis are used to select suitable recycled material. The suitability of choice is supported by mechanical tests of 28-day old cement pastes, where the compressive strength and dynamic modulus of elasticity are observed properties. Specimens measuring 40 × 40 × 160mm are composed of 70 wt.% Portland cement and rest is micronized concrete. In all cases, the results are compared with the reference material.

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Utilization of waste concrete powder as a substitution material for cement

Cited by 180 publications

References 9 publications

The Properties of Composites with Recycled Cement Mortar Used as a Supplementary Cementitious Material

The Properties of Composites with Recycled Cement Mortar Used as a Supplementary Cementitious Material

New additions for eco-efficient cement design. Impact on calorimetric behaviour and comparison of test methods

Recycling of Construction Waste Using High-Speed Milling Process: Determination of Waste Concrete

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