The effect of Ca2+ amount and sintering temperature on mechanical properties geopolymer-brushite (GPB) binders was investigated. Brushite raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. complete phase structural analyses performed by X-ray powder diffraction, Fourier transforms infrared spectroscopy (FT-IR). pore-filling as a consequence ions inco...

There are more than half million tons of serpentine waste produced per year during mining operation in Taiwan. This study is to develop a process to manufacture fire-resistant geopolymer based on serpentine waste. The experiment results show that the waste serpentine-based geopolymer have very good physical/mechanical characteristics. For fire resistance tests, a 10 mm thick geopolymer panel wa...

The vast increase in CO2 and waste generation recent decades has been a major obstacle to sustainable development sustainability. In construction industry, the production of ordinary Portland cement is greenhouse gas emitter with almost 8% total world. To address this, Alkali-activated materials geopolymer have more recently introduced as green alternative significantly lowered environmental fo...

Shrinkage behavior of a geopolymer cement paste prepared from pumice-type natural pozzolan was studiedby changing parameters of chemical composition including SiO2/Na2O molar ratio of activator and total molar ratiosof Na2O/Al2O3, and H2O/Al2O3. For investigating the effect of curing conditions on shrinkage, hydrothermal curingwas also applied. The obtained results clearly revealed the governin...

Current ASTM standards can be used to provide a degree of characterization of geopolymeric materials, yet the researcher must be aware of differences between hydraulic and geopolymer cementitious materials. The current study assessed the applicability of available ASTM standards that analyze the insoluble content and oxide content of cementitious materials (ASTM C114 and C311), compressive stre...

The objectives of the present research is to appreciate the effect of synthesizing parameters on setting time and workability of Fly ash based geopolymer paste . Locally available low calcium fly ash from a thermal power plant located near Kolkata, India, was used . Fly ash used are lignite coal based and falls under class F category. The broad areas of present research include: Manufacturing o...

As a result of global warming, the pursuance low-carbon, sustainable building materials has been prioritized. The development geopolymer/cement-less binders can be considered an innovative and green way forward to minimize carbon footprint tackle industrial waste material utilization. However, chemical composition properties waste-derived geopolymer varies considerably based on compositions sou...

Abstract In this experimental study, two different cementitious materials, including (i) a class of expansive cement currently used for plug and abandonment (P&A) operations (ii) non-cement-based naturally occurring rock, known as geopolymer, are selected to examine the hydraulic bond strength shear strength. Clean machined steel rusty corroded were represent casing. The test samples cured ...