Geopolymer technology is considered a strategic alternative for recycling construction and demolition waste (CDW) to produce new products which meet the requirements of environmental energy sustainability. The separation management CDW fractions still technological complex process and, even if large-scale quite common, necessity perform this treatment may reduce economic benefits reuse. So, very promising option represented by manufacturing geopolymers using unseparated CDW. In aim, deriving...

Over the last century, decay of heritage buildings significantly increased due to rising air pollution and climate change, which accelerated intensified deterioration mechanisms natural stones. So, increasing concern about unavoidable degradation cultural heritage, led researchers focus on innovative effective solutions for conservation historical patrimony in order guarantee its fruition. The recovery physical mechanical properties a weathered stone often involves consolidation...

Abstract Motivated by the hierarchical micro and nanoscale features in terms of porosity diatomite, production ceramic-graded porous foams with tailored porosity, obtained using it as raw material, has been proposed. The main challenge during foam-production process preservation diatomite nanometric addition other levels porosity. coupled use two techniques direct foaming (chemical mechanical), combined 3D printing inverse replica method, assured achievement of, respectively, microscopic...

Additive Manufacturing (AM) has spread significantly in recent years, with relevant applications many fields of research and engineering. Thanks to its distinctive production methods, AM enables the creation parts complex shapes that cannot be fabricated easily by employing traditional subtractive processes. 3D printing, which involves overlapping material layer until designed part is completed, shows several advantages terms limiting waste, reducing phases postprocessing/heat treatments...

Organic–inorganic hybrid foams were prepared by using metakaolin or diatomite as a partial (or total) replacement of metakaolin, precursor and metal silicon whipped protein blowing agents. The foamed systems cured at defined temperature time then characterized chemical point view through Fourier transformed infrared spectroscopy X-ray diffraction mechanical morphological compression tests scanning electron microscopy. experimental findings highlighted that the in formulation affected...

Additive Manufacturing (AM) is a technological process in which elements are fruitfully built up adding materials layer by layer. AM had massive development recent times, thanks to its intrinsic advantages, especially if compared with conventional processes (i.e. subtractive manufacturing methods), terms of free-form design, high customization products, significant reduction raw consumption, low request postprocessing and heat treatments, use pure reduced time for final products be marketed....

Abstract In recent years, the construction industry has increasingly focused on reducing its environmental impact, addressing research efforts towards innovative materials and technological solutions. this context, gypsum-based natural fibers represent some of most promising alternatives in terms sustainability. This paper aims to propose a new gypsum structure reinforced with composite hemp fabric impregnated epoxy resin, investigating manufacturing process mechanical properties,...

Waste polymeric material, classified as secondary raw mainly consisting of selected polyolefins, PE and PP, PET has brought great pressure on the environment, due to large quantities produced by urban lifestyles economic activity. This research evaluated possibility reuse plastic waste aggregates in hydraulic lime based composite mortars. The mortars were prepared replacing conventional aggregate, silica sand, with 10, 15, 20 % fiber a mixture water. chemico‐physical interaction between...

Demolition activity plays an important role in the total energy consumption of construction industry European Union. The indiscriminate use non-renewable raw materials, consumption, and unsustainable design has led to a redefinition criteria ensure environmental protection. This article introduces experimental plan that determines viability new type material, obtained from crushed brick waste, be introduced into market. potential waste as material production building precast products, by...

Nowadays the preservation and restoration of historical building needs to be faced in accordance with a novel sensibility regarding environment preserve future generations.
 In this context, scientific community is focusing on sustainable materials techniques allowing durability mechanical performances at same time compatibility existing heritage. Alkali activated represent great challenge produce new starting from ones reducing consumption, emission greenhouse gases environmental...

The extent of the dissolution aluminosilicate compounds is crucial, since amount Si and Al initially dissolved essential for following polycondensation can strongly influence physical mechanical performances final product. In order to set up a method test ability material react in alkaline media, different sources have been selected: mineral resource (a zeolitized tuff), an industrial by product (silt from washing process construction demolition wastes), heat treated clay sediment calcined...

Additive manufacturing, better known as 3D printing, is an innovative manufacturing technique which allows the production of parts, with complex and challenging shapes, layer by mainly through melting powder particles (metallic, polymeric, or composite) extruding material in form wire, depending on specific technique. Three-dimensional printing already widely employed several sectors, especially aerospace automotive, although its large-scale use still requires gain know-how to overcome...