Influence of self heating and Li2SO4 addition on the microstructural development of calcium aluminate cement

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Cement production accounts for approximately 8% of man-made CO2 emissions. Lowering these CO2 emissions is currently one of the most important and urgent research topics within the cement community. To reduce these emissions, the Portland cement (PC) is pa ...

This study compares the influence of two limestone fineness on strength development and cement hydration. The replacement of clinker by 20% of fine limestone (d(v,50) = 2 mu m and SSA = 4,21 m(2)/g) gives similar strength development to PC up to 7 days. Fi ...

Proportioning the dosage of Ground Calcium Carbonates (GCC) in cementitious materials, beyond current normative levels, is one of the most promising ways towards sustainability of mortar and concrete technology. Performance parameters such as the water/bin ...

This paper reports the strength-promoting mechanism of alkanolamines on limestone-calcined clay cement (LC3). The hydration kinetics, phase formation and microstructure of LC3 with triethanolamine (TEA) or triisopropanolamine (TIPA) were investigated. TEA ...

Limestone calcined clay cements (LC3) are blended cements that combine clinker, limestone, calcined clay and gypsum. The availability of the materials required to produce LC3 and the good performance that it achieves, makes LC3 suitable as a sustainable re ...

Microencapsulated phase change materials (MPCM) incorporated in buildings walls can reduce indoor temperature fluctuations, conserving energy and enhancing thermal comfort. MPCM were incorporated in calcium sulphoaluminate cement (CSA) at high concentratio ...

This paper examines the possibility of the use of some clays calcined from Nigeria as partial substitutes for clinker in the production of Limestone Calcined Clay Cement (LC3). The clays were calcined in the oven at a temperature of 800 degrees C and for o ...

To reduce the CO2 emissions from cement production, Portland cement (PC) is partially replaced by supplementary cementitious materials (SCM). Reactions of SCM with PC during hydration leads to the formation of CSH with more silicon and aluminum than in PC, ...

Despite use of blended cements containing significant amounts of aluminum for over 30 years, the structural nature of aluminum in the main hydration product, calcium aluminate silicate hydrate (C-A-S-H), remains elusive. Using first-principles calculations ...

This study investigates the mechanism by which a novel starch-based admixture named Temperature Rise Inhibitor (TRI) modifying cement hydration and limiting heat evolution. This admixture is designed to avoid thermal cracking of concrete. Depending on the ...

Grinding aids are commonly used in cement manufacture to reduce electrostatic forces between powder particles and reduce agglomeration. Alkanolamines are known to also influence the hydration of the aluminate phases in cement. This study assessed the effec ...

Influence of self heating and Li2SO4 addition on the microstructural development of calcium aluminate cement

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The effect of alkali hydroxides and equilibration time on Al uptake by calcium silicate hydrates (C-S-H)

Impact of limestone fineness on cement hydration at early age

Towards tailored cement-based materials with ground calcium carbonates

Strength-promoting mechanism of alkanolamines on limestone-calcined clay cement and the role of sulfate

Limestone calcined clay cements (LC3): raw material processing, sulfate balance and hydration kinetics

Hydration development and thermal performance of calcium sulphoaluminate cements containing microencapsulated phase change materials

The Influence of some calcined clays from Nigeria as clinker substitute in cementitious systems

The effect of sodium hydroxide on Al uptake by calcium silicate hydrates (C S H)

The Atomic-Level Structure of Cementitious Calcium Aluminate Silicate Hydrate

Microstructural modelling of autogenous shrinkage in Portland cement paste at early age

Effect of a novel starch-based temperature rise inhibitor on cement hydration and microstructure development

Assessing the effect of alkanolamine grinding aids in limestone calcined clay cements hydration