Production of cement clinkers from municipal solid waste incineration (MSWI) fly ash

The feasibility of partially substituting ordinary raw materials with municipal solid waste incineration (MSWI) fly ash in alinite cement production was investigated by X-ray diffraction (XRD), X-ray fluorescence spectrometry (XRF) and scanning electron microscopy (SEM). The physical properties and leaching behavior of the produced cement were also evaluated. Experimental results show that good quality clinkers can be obtained by firing the raw mixes, in which the replacement of MSWI fly ash reaches to 30%, at 1200 °C for 2 h. Alinite cements have higher early strengths at all gypsum additions, while the best result having acceptable early and 28-day strengths is obtained at 5% of gypsum addition. Results also show that the leaching toxicity of heavy metals is far lower than that of the regulatory limit at all testing ages. Based on this study, MSWI fly ash is viable as an effective, alternative raw material in alinite cement production.

Preparation of alinite cement from municipal solid waste incineration fly ash

This article discusses the use of high per cent by-products (ie marble powder, brick powder) in green concrete to develop a procedure which construction industry can use This current study, ther

Fresh and hardened properties of green binder concrete containing marble powder and brick powder

Investigation of iron passivity in highly alkaline media using reactive-force field molecular dynamics

Strength gain mechanisms of blended-cements containing marble powder and brick powder were investigated in the presence of chemical composition changings of cement pastes. Blended Cements (BC) were prepared blending of 5% gypsum and 6%, 20%, 21% and 35% Marble Powder (MP) or 6%, 20%, 21% and 35% Brick Powder (BP) for CEMI42.5N cement clinker and grinding these portions in ball mill at 30 (min). Pastes and mortars were also drawn up with these cements. Chemical compositions of pastes, Compressive Strength (CS) and Flexural Strength (FS) of mortars were determined at 7th-day, 28th-day and 90th-day according as standard methods. Experimental results indicated that fluctuation of SiO2, Na2O and alkali at Marble Powder-Blended Cement Paste (MP-BCP) and continuously increasing of SiO2 at Brick Powder-Blended Cement Paste (BP-BCP) positively induced strength gain mechanism of BCM since MP up to 6% or BP up to 35% were blended for cement.

Strength gain mechanisms of blended-cements containing marble powder and brick powder

Production and properties of alinite cements from steel plant wastes

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Production and properties of alinite cements from steel plant wastes