Technological assessment of tailings from quartzite mining sites in Alpinópolis (Minas Gerais–Brazil) as aggregates in concrete block paving (CBP)

Experimental Study on Diffusion Law of Post‐Grouting Slurry in Sandy Soil

“…Geotechnical engineering reinforcement plays an important role in its stability and safety, especially for fractured rock mass and soft soil layer [1][2][3][4][5][6][7]. While drilling and punching piles for mud-retaining walls in sand areas, there are problems such as muddy ground, stress relaxation, sediment, and disturbance of bearing end resistance so that the pile-end resistance and pile side friction resistance are significantly reduced [8][9][10][11][12]. In order to eliminate the hidden dangers such as pile-bottom sediment and pile mud film, the foundation treatment grouting technology was quoted into the foundation pile and the grouting construction technology of the bored pile was formed.…”

Evaluation of mixtures of lateritic clayey soil with quartzite and stone powder for road purposes

“…The study showed a satisfactory behavior with the use of the waste, but it was necessary, to consider the site of collection of the material, since the traces of two samples, denominated A1 and A3, showed values lower than the gneiss trace (conventional), while the traces A2 and A4 presented an increase in the tensile strength in relation to the standard trace. Reis (2016) and Reis et al, (2018aReis et al, ( , 2018b) sought alternatives to reduce the problems related to the disposal and reuse of mining waste, analyzed the technical feasibility of using quartzite residue as coarse and 0ine aggregate for the production of Concrete Block Paving (CBP) to replace conventional aggregates, and obtained results that indicated the possibility of 100% replacement of coarse aggregate, since there were no differences in simple compressive strength in relation to conventional material. For the 0ine aggregate, washed and unwashed quartzite sand were used, and no signi0icant differences were detected, with the difference of a better surface 0inish of the pieces for the unwashed material.…”