Cement substitution with secondary materials can reduce annual global CO2 emissions by up to 1.3 gigatons

IH Shah, SA Miller, D Jiang, RJ Myers - Nature communications, 2022 - nature.com
Population and development megatrends will drive growth in cement production, which is
already one of the most challenging-to-mitigate sources of CO2 emissions. However …

Effect of aluminate and carbonate in magnesia silicate cement

E Bernard, B Lothenbach, A German, D Rentsch… - Cement and Concrete …, 2023 - Elsevier
The effect of alumina and carbonates on magnesium silicate hydrate (MSH) cement was
investigated at high Mg/Si ratios (1.5–2.5), constant Na 2 CO 3 concentration (17 g/L) and …

[HTML][HTML] In-situ formation of layered double hydroxides in MgO–NaAlO2-activated GGBS/MSWI BA: Impact of Mg2+ on reaction mechanism and leaching behavior

T Liu, S Li, Y Chen, HJH Brouwers, Q Yu - Cement and Concrete …, 2023 - Elsevier
Leaching problems of municipal solid waste incineration bottom-ash (MSWI BA) have been
extensively reported in the literature. The outstanding heavy-metal-ion binding capacity of …

The intrinsic role of network modifiers (Ca versus Mg) in the reaction kinetics and microstructure of sodium silicate-activated CaO-MgO-Al2O3-SiO2 glasses

A Hamdan, A Hajimohammadi, A Rawal… - Cement and Concrete …, 2023 - Elsevier
The use of industrial samples for studying the impact of chemical oxides on the reactivity of
sodium silicate-activated slags (SSAS) often led to conflicting results in past studies. In this …

Novel SCMs produced by the calcination of secondary aluminium dross with dolomite and their potential usage in cemented paste backfill

S Zhang, K Wang, H Li, X Zhang, Y Jiang - Construction and Building …, 2023 - Elsevier
In this study, novel supplementary cementitious materials (SCMs) were produced by the
mixed calcination of secondary aluminium dross and dolomite. The thermal activation effect …

Retention mechanism of cesium in chabazite embedded into metakaolin-based alkali activated materials

RI Chaerun, N Soonthornwiphat, K Toda… - Journal of Hazardous …, 2022 - Elsevier
Abstract Disposal of cesium-137 (Cs-137)-loaded chabazite generated from
decontaminating cooling water of the damaged reactor at the Fukushima Daiichi Nuclear …

Calcium and magnesium silicate hydrates formed in the presence of sodium hydroxide: Insight from experiments and DFT simulation

J Li, Y Nong, S Yin, Z Chen, T Su, Q Yu - Materials Today Communications, 2022 - Elsevier
In this paper, calcium and magnesium silicate hydrates were synthesized in the presence of
sodium hydroxide to explore the effect of alkaline environment on the structure of synthetic …

Influence of ferrochrome ash on mechanical and microstructure properties of ambient cured fly ash-based geopolymer concrete

J Mishra, B Nanda, SK Patro, SK Das… - Journal of Material …, 2022 - Springer
Earlier studies indicated that the reactive MgO reduces shrinkage crack and porosity, and
accelerates the hydration and strength development. Ferrochrome ash (FCA), a waste …

Comparison of one-part and two-part alkali-activated metakaolin and blast furnace slag

IP Segura, T Luukkonen, J Yliniemi… - Journal of Sustainable …, 2022 - Springer
One-part alkali-activated materials prepared with solid-form alkali activator are gaining
attention in the construction industry, as they are an easier and safer approach for cast-in …

Phase evolution and mechanical-hydroscopic properties of alkali-silica reaction gels modified by magnesium nitrate

A Sinha, J Wei - Cement and Concrete Composites, 2023 - Elsevier
Abstract Alkali-silica reaction (ASR)'s destructiveness is governed by the compositions and
properties of ASR products, while methods of converting these hygroscopic-expansive gel …