Microstructural, chemical and physical characterisation of the Shot-Earth 772

Experimental tests and FE simulations to compute the mechanical and fracture properties of the shot‐earth 772

“…The mixture stream is, then, projected at high velocity onto a surface, being such an impact able to compact the material (see Figure 1). More details regarding the production and shooting process of the shot-earth can be found in Vantadori et al 17 The present authors have recently characterized the shot-earth 772 from a microstructural, chemical and physical point of view, 17 By focusing the attention on the topic of the paper (i.e., the shot-earth mechanical and fracture characterizations), the specimens here employed in the experimental campaign are extracted from shot-earth plates, with different thicknesses and subjected to: a. flexural testing performed according to the UNI-EN 12390-5 European Recommendations 18 ; b. compression testing performed according to the UNI-EN 12390-3 European Recommendations 19 ; c. fracture testing performed according to both the RILEM Recommendations 20,21 and the MTPM. [26][27][28][29] The following subsections briefly present the specimen geometries and the experimental set-up related to the above experimental program.…”

“…The mixture stream is, then, projected at high velocity onto a surface, being such an impact able to compact the material (see Figure 1). More details regarding the production and shooting process of the shot‐earth can be found in Vantadori et al 17 …”

“…The present authors have recently characterized the shot‐earth 772 from a microstructural, chemical and physical point of view, 17 finding that the material: is characterized by unhydrated cement phases, hydrated cement phases, pores and aggregates; contains a significant amount of Si (21.52% by weight), Ca (16.44% by weight) and considerable amounts of Al (4.01% by weight), Fe (2.56% by weight), K (1.17% by weight), and Mg (0.95% by weight); has an average porosity value equal to 2.200 ± 0.564%; is characterized by an Ultrasonic Pulse Velocity (UPV) equal to 3.35 ± 0.05 km/s. …”

“…An interesting review of the experimental procedures currently employed for the physical and mechanical characterization of different earthen materials is reported in Fabbri et al 15,16 In such a context, the present paper is dedicated to the mechanical and fracture characterization of a specific earthen material, that is, the shot-earth 772 (consisting of seven parts of soil, seven parts of aggregates, two parts of cement by volume, and about 3% of water by volume). Note that, although such a material has been recently characterized from a microstructural, chemical and physical point of view, 17 the knowledge of its mechanical and fracture properties (essential for extending its use in construction industry) is quite lacking.…”

Shot-Earth as Sustainable Construction Material: Chemical Aspects and Physical Performance

“…This paper reports a series of studies conducted on the chemical and physical characteristics of two particular mixes of SE [14,15], aiming to fill a gap in the understanding of the durability of soil-based materials and to compare the durability and mineralogical characterization of SE with standard cementitious materials.…”