This paper presents an innovative approach towards the development of a green concrete. The geopolymer is environmentally friendly construction/repairing material. In addition, glass fibers are helpful to influence strength properties and reduce hair line cracks bleeding in study based on use fly ash as partial replacement cement and, subsequently, its effect compressive split tensile manufactu...

Three Moroccan clays, denoted A1, A3 and A5, were sampled from the Fez region with aim of potential use as aluminosilicate precursors for geopolymer synthesis. Each clay was subjected to calcination at 700 °C analyzed using DTA/TG, grain size distribution measurements, XRD, FTIR spectroscopy before after heat treatment. The results showed that three clays contain kaolinite in different proporti...

This study reports the effect of natural dolomite addition to fly ash and mechanical activation this blend on geopolymerization process. Dolomite was replaced with at 1, 3, 5, 10 wt.%. Geopolymers were synthesized ambient temperature using NaOH solution as an alkaline agent. The process, reactivity raw material, compressive strength, microstructure studied X-ray diffraction, Fourier-transform i...

Mineral-impregnated, carbon ?ber composites (MCF) are a promising alternative to conventional concrete reinforcements. For the efficient industrial production of MCF, sufficient processing time for impregnation suspension must be ensured. In present investigation, metakaolin-made geopolymer (GP) has been developed and tested this purpose. The carbon-fiber yarns was performed continuously automa...

The gel compatibility in calcium contained geopolymers remains a controversial topic. This work aims to clarify the role of Ca availability determining geopolymerization alkali-activated ladle slag/Class F fly ash blends. results show that product layer wrapping around slag particles largely governs diffusion into environment, enabling development two separated gels, namely C-(N)-A-(S)-H and N-...

Geopolymers can improve environmental protection and are therefore considered a 21st-century material that requires special attention. The main objective of this study was to examine the utilization fly ash deposited on heap as potential raw for geopolymerization process. In work, flexural compressive strengths, well water absorption geopolymers, were evaluated based alkaline activator properti...

Geopolymers have not been extensively employed as catalytic materials despite of their zeolite-resembling Si–Al structure. Geopolymerization offers a novel way for preparation catalysts and possibility to use waste or industrial side-stream derived raw material resource catalyst manufacturing. This work concentrates on metakaolin-based geopolymer that were prepared, characterized tested alterna...

The term geopolymer is a sustainable binder refers to the study of waste mate- rials containing silicon (Si) and aluminum (Al), which create an alternative formed by complex repeated chain geopolymerization process. Hellacious materials alternation mandatory see construction as beautiful infrastructure there are limited natural resources produce qual- ity concrete. Alternative aggregates create...

Acid-based geopolymers are known for their high temperature resistance and good mechanical performances. Some compositions also exhibit water resistance, which make them suitable outdoor applications. This work aims to understand accurately the steps occurring during geopolymerization process focuses on type of networks forming at early stages reaction. The sample, prepared from metakaolin phos...

Kaolin and halloysite are aluminosilicate materials widely available in Cameroon. The present study aims at investigating the fresh hardened properties of consolidated metakaolin- meta-halloysite blends geopolymer binders cured room temperature (23 ± 3 °C). To produce geopolymers, metakaolin was used as main solid precursor replaced by up to 50 wt%. raw synthesized products were characterized u...