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Overview on Cement and cement types, its manufacturing process and mineral additives. Looking for cements and cement additives? Cement is a binding that sets, hardens, and adheres to other material to bind them together. It is manufactured through a closely controlled chemical combination of calcium, silicon, aluminum, iron …
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Admixtures are chemical additives in concrete and play a vital role in modifying the desired properties in fresh concrete or green concrete. The evolution of these admixtures in their performance contributed a lot to the modern concrete over the conventional concrete.
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This article discusses the influence of two types of additives on the compressive and flexural strength and elastic modulus of concrete. Two different types of additives (Metakaolin and MC Adhesive) were used to produce concrete with target strengths of 30 to...
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The modern types of concrete are a mixture of aggregates, cement, water and optional additives and admixtures. In particular, polymer additives seem to be a promising type of component that can significantly change concrete and mortar properties. Currently, the most popular polymer additives include superplasticizers, latexes and …
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The retarding side effect and the compatibility with other additives are the main problems that limit the field application of the synthesized fluid loss control additive (FLCA). The effect of the type and content of carboxylic acid groups on the retarding side effect of FLCA and the compatibility b …
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The Effects of Conditioning and Additives on the Viscosity Measurement of Cement Slurries ii List of Figures ... additives, etc. To model a cement slurry, one could use the multi-component continuum theories where governing equations and constitutive relations are needed for each component (phase) ...
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The influence of both organic and inorganic additives to calcium aluminate cement on the processes of hydration and structure formation of concrete both at normal and elevated temperatures is investigated here. The results of investigating phase transformations in hardened calcium aluminate samples during heating from 20 to 900°C …
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The use of additives to improve the quality of cement grouts and their effects on strength, durability and resistance to chem. erosion of grouted soil or rock mass is crucial for geotech. engineering, esp. in foundation construction.
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Nanoparticles generally improve mechanical, durability properties of concrete. • Effects on workability, air content, and setting times of concrete are varied. • Dispersion is important for utilizing the unique reactivity of nanoparticles. • Reducing the cost of nano-scale additives is a vital facet of commercial viability.
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Alkanolamines have gained increasing popularity as chemical additives in cement-based materials because of their exceptional effectiveness at low dosages, notably lower than those of inorganic salts (Riding et al., ... The effect of additives on the hydration of belite (C 2 S) ...
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Measurements of radon emanation factor of cement and pozzolanic additives, i.e. fly ash and phosphogypsum were also performed. ... Effect of fly ash on Portland cement systems Part II. High-calcium fly ash. Cem. Concr. Res. (2000) M. Singh Treating waste phosphogypsum for cement and plaster manufacture.
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In this study, the change of the effect of high temperature in concrete by the types of mineral additives was examined experimentally. For this purpose, CEM I 42,5 R cement was used together with different minerals such as Barite, Diatomite, Silica fume, F class Fly ash that are added in a substituted manner at the rates of 10%, 20%, 30% and 40% by …
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Polycarboxylate superplasticizer (PCE) is a widely used water-reducing agent that can reduce significantly the water demand of concrete, which reduces the porosity and enhances the strength and durability of the concrete. (The PCE consists of a single backbone with many long PEO side chains.) Generally, aggregate occupies >70 wt.% of …
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