Application of MSWI bottom ash as alternative aggregate in cement mortar

The aim of this study was to find out an application of the municipal waste incineration materials and try to use them as a replacement for the natural ones. MSWI (Municipal Solid Waste Incineration) bottom ash (BA) was used as partial/total replacement of siliceous sand in CEM II based mortar. Three size fractions of BA were used with respect to replace the siliceous sand in corresponding way. There were designed 5 mixtures with increasing replacement of siliceous sand by 25 % each. The water/cement ratio was decided to be taken according to the constant consistence of the mortar. The bulk density, compressive strength and bending strength of the mortars were decreasing with growing content of BA.

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High Temperature Testing of Cement Mortar Containing MSWI Bottom Ash

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.377.55 ◽

2013 ◽

Vol 377 ◽

pp. 55-59 ◽

Cited By ~ 2

Author(s):

Zbyšek Pavlík ◽

Martin Keppert ◽

Milena Pavlíková ◽

Anton Trník ◽

Robert Černý

Keyword(s):

High Temperature ◽

Cement Mortar ◽

Bottom Ash ◽

Waste Incineration ◽

Partial Replacement ◽

Municipal Solid Waste Incineration ◽

Matrix Density ◽

High Temperature Testing ◽

Mswi Bottom Ash ◽

Comparable Performance

High temperature testing of cement mortar containing bottom ash (BA) generated by municipal solid waste incineration (MSWI) as partial replacement of natural aggregate is presented in the paper. The measurements of mechanical properties, bulk density, matrix density, and total open porosity are performed on samples exposed to the temperatures of 20°C to 1000°C. TGA analysis is performed as well. Finally, the studied samples are analyzed by IR spectroscopy in order to evaluate TGA data. The obtained results indicate a comparable performance of the mortar modified by BA with the reference material.

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Pre-treatment of municipal solid waste incineration (MSWI) bottom ash for utilisation in cement mortar

Construction and Building Materials ◽

10.1016/j.conbuildmat.2015.07.185 ◽

2015 ◽

Vol 96 ◽

pp. 76-85 ◽

Cited By ~ 44

Author(s):

Nabajyoti Saikia ◽

Gilles Mertens ◽

Koenraad Van Balen ◽

Jan Elsen ◽

Tom Van Gerven ◽

...

Keyword(s):

Municipal Solid Waste ◽

Solid Waste ◽

Cement Mortar ◽

Bottom Ash ◽

Waste Incineration ◽

Municipal Solid Waste Incineration ◽

Mswi Bottom Ash ◽

Pre Treatment

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Positive Influence of Liquid Sodium Silicate on the Setting Time, Polymerization, and Strength Development Mechanism of MSWI Bottom Ash Alkali-Activated Mortars

Materials ◽

10.3390/ma14081927 ◽

2021 ◽

Vol 14 (8) ◽

pp. 1927

Author(s):

Lei Jin ◽

Guodong Huang ◽

Yongyu Li ◽

Xingyu Zhang ◽

Yongsheng Ji ◽

...

Keyword(s):

Sodium Silicate ◽

Setting Time ◽

Bottom Ash ◽

Free Water ◽

Polymerization Reaction ◽

Liquid Sodium ◽

Strength Development ◽

Mswi Bottom Ash ◽

Alkali Activated ◽

Development Mechanism

Setting time and mechanical properties are key metrics needed to assess the properties of municipal solid waste incineration (MSWI) bottom ash alkali-activated samples. This study investigated the solidification law, polymerization, and strength development mechanism in response to NaOH and liquid sodium silicate addition. Scanning electron microscopy and X-ray diffraction were used to identify the formation rules of polymerization products and the mechanism of the underlying polymerization reaction under different excitation conditions. The results identify a strongly alkaline environment as the key factor for the dissolution of active substances as well as for the formation of polymerization products. The self-condensation reaction of liquid sodium silicate in the supersaturated state (caused by the loss of free water) is the major reason for the rapid coagulation of alkali-activated samples. The combination of both NaOH and liquid sodium silicate achieves the optimal effect, because they play a compatible coupling role.

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Effects of two different accelerated carbonation processes on MSWI bottom ash

Process Safety and Environmental Protection ◽

10.1016/j.psep.2017.08.028 ◽

2017 ◽

Vol 111 ◽

pp. 560-568 ◽

Cited By ~ 3

Author(s):

Namil Um ◽

Ji-Whan Ahn

Keyword(s):

Bottom Ash ◽

Accelerated Carbonation ◽

Mswi Bottom Ash

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Influence of Mix Fly and Bottom Ashes from Biomass on Selected Properties of Cement Mortars

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.828.14 ◽

2019 ◽

Vol 828 ◽

pp. 14-17

Author(s):

Malgorzata Ulewicz ◽

Jakub Jura

Keyword(s):

Electron Microscopy ◽

Compressive Strength ◽

Industrial Waste ◽

Cement Mortar ◽

Raw Materials ◽

Bottom Ash ◽

Waste Materials ◽

X Ray ◽

Cement Mortars ◽

Fluorescence Spectrometer

The preliminary results of utilization of fly and bottom ash from combustion of biomass for the produce of cement mortars has been presented. Currently, this waste are deposited in industrial waste landfills. The chemical composition of waste materials was determined using X-ray fluorescence (spectrometer ARL Advant 'XP). ). In the studies sand was replaced by mix of fly and bottom ash from the combustion of biomass in an amount of 10-30% by weight of cement CEM I 42.5 R (Cemex). The obtained cement mortar concrete were subjected to microscopic examination (LEO Electron Microscopy Ltd.) and their compressive strength (PN-EN-196-1), frost resistance (PN-EN 1015-11 and PN-B -04500 ) and absorbability (PN-85/B-04500) were identified. The obtained results showed, the replacement of the cement by mix ashes from combustion of biomass reduce consumption of raw materials and will have a good influence on the environment.

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