Fibers can increase the ductility of geopolymer materials, acting as reinforcements to improve mechanical properties. These improvements depend on fiber content and quantity. This study evaluates impacts different percentages glass a GBFS (ground blast furnace slag) matrix. The fibers were used critical length 20 mm, obtained by pull-out test in previous studies. Percentages 0.25%, 0.50%, 0.75%...

A natural zeolite-containing esthetic tile was produced by utilizing a geopolymer reaction between blast furnace slag and sodium silicate solution. Preparation of smooth, flattened, rigid tiles with maximum flexural strength being 8.0 MPa achieved optimizing particle size the (d50 = 5.4 µm) concentration aqueous solution (55 mass %) when dosed rate zeolite fixed to 40 % whole paste. An amorphou...

Polyol-ester-based carbon black pastes are used to either coat or penetrate flexible graphite, thereby increasing the thermal contact conductance of flexible graphite between copper surfaces. Paste penetration by up to an effective paste thickness (the volume of the penetrated paste divided by the geometric area of the flexible graphite) of 5 lm increases the conductance by up to 350%, 98% and ...

In this study the development of a metakaolin based geopolymeric mortar to be used as bonding matrix for external strengthening of reinforced concrete beams is reported. Four geopolymer formulations have been obtained by varying the composition of the activating solution in terms of SiO₂/Na₂O ratio. The obtained samples have been characterized from a structural, microstructural and mechanical p...

it has been shown that geopolymerization can transform a wide range of waste aluminosilicate materials into building materials with excellent chemical and physical properties such as fire and acid resistance. in this research work, geopolymerization of construction waste materials with different alkali-activators based on combinations of na2sio3 and naoh has been investigated. a number of syste...

This research aimed to investigate the effect of fine aggregate particles on mechanical properties fly ash-based geopolymer mortar. In this work, seven kinds river sand were designed based different characteristics. The fineness modulus was adopted quantitatively describe gradation sands. fluidity, compressive, flexural, and tensile strengths mortar with gradations analyzed by laboratory tests....

The development of sustainable building materials and construction to decrease environmental pollution in both production operational stages the materials’ life cycle is appealing great interest industries worldwide. This study evaluated negative effect temperature up 1000 °C on compressive strength microstructure fly ash petroleum sludge (PSA) geopolymer mortar. A sodium silicate hydroxide mix...

Food containers made from glass are separately collected urban solid waste at 76% in most parts of Europe. The cullet finds its way to re-melting, while the debris is often disposed of. With this contribution, we suggest an upcycling process where simply ground without any washing operation and added alkali-activated paste. Metakaolin-based geopolymer mortar with coarsely as fine aggregate has ...

Ternary clay-based composite material (TCC), composed of lime, clay and sand, and usually modified with sticky rice and other organic compounds as additives, was widely used historically in Chinese construction and buildings due to its high mechanical performance. In this study, to gain an insight into the micromechanical mechanism of this cementitious material, the nanomechanical properties an...