Topic
Geopolymer
About: Geopolymer is a research topic. Over the lifetime, 6776 publications have been published within this topic receiving 157991 citations. The topic is also known as: geopolymers.
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TL;DR: In this article, the mix design, mechanical properties, durability and microstructure of GPC have been discussed to figure out and report the last data and information regarding geopolymer concrete.
273 citations
TL;DR: In this paper, the effect of different cations (sodium and potassium) on the physical evolution of geopolymeric materials derived from metakaolin is investigated for a range of specimens with Si/Al ratios between 1.15 and 2.15.
Abstract: The physical evolution of materials during heating is a critical factor in determining their suitability and performance for applications ranging from construction to refractories and adhesives. The effect of different cations (sodium and potassium) on the physical evolution of geopolymeric materials derived from metakaolin is investigated for a range of specimens with Si/Al ratios between 1.15 and 2.15. It is observed that the effect of potassium is to reduce the thermal shrinkage, while thermal shrinkage increases with increasing Si/Al ratio in the presence of each alkali type. The thermal shrinkage behavior of mixed-alkali specimens is observed to change from a mean of the sodium and potassium specimens at low Si/Al ratio to behave similarly to sodium specimens at high Si/Al ratios. It is clear from this investigation that alkali cations only have a significant effect on thermal shrinkage of geopolymer at low Si/Al ratios (⩽1.65), while both Si/Al ratio and alkali cation have little effect on the extent of thermal shrinkage at Si/Al ⩾ 1.65.
273 citations
TL;DR: In this article, the material design and fresh properties of geopolymer mortar developed for 3D concrete printing application are presented, where extruded materials are deposited layer by layer to build complex architectural and structural components without the need of any formwork and human intervention.
273 citations
TL;DR: In this paper, the effect of alkali metal silicate precursor solutions on geopolymerization, in terms of its initial pH-control, on the efficiency of heavy metal (Pb and Cu) containment in geopolymers was examined.
272 citations
TL;DR: The results have indicated that the systems under investigation are suited for the manufacture of pre-formed building blocks at room temperature.
270 citations