Durability of new recycled granite quarry dust-bearing cements

Abstract

Imperative to the design of new cements that bear different types of waste as additions is a parallel study of the mechanical strength and durability of the new materials to ensure their performance will be satisfactory throughout their service life. This study explored the effect of adding 10 % or 20 % granite quarry dust to cement on properties such as transport (total and capillary water absorption and electrical resistivity), dimensional stability (drying shrinkage and expansion), the alkali-silica reaction, heat of hydration and colour. No alkali-silica reaction was observed in the new materials and expansion and contraction were less intense than in conventional cement. The water absorption and capillary absorption coefficients rose less in the additioned cements than the replacement ratio, whilst their higher resistivity values afforded greater corrosion protection than found in the reference. The inclusion of this waste also prompted a rise in lightness and a decline in peak heat of hydration. The multivariate analysis of variance (MANOVA) conducted showed that the factors time and replacement ratio affected the properties significantly, whereas the combined effect of the two was statistically significant or otherwise depending on the property analysed. The findings showed that the partial replacement of cement with quarry dust is not detrimental to product durability and the recycled material qualifies as a strength class 42.5, type II/A. Adittionally, the binders bearing 20 % granite quarry dust meet the requirements to qualify as low heat cements (CEM II/A LH).

Water transport in binary eco-cements containing coal mining waste

“…As Table 4 also shows, total porosity rose with the ACMW replacement ratio: by approximately 7 % in ACMW20 and 29 % in ACMW50 samples relative to the reference. Figure 1 shows that the variations in total porosity were directly and linearly related to density, findings consistent with those reported by other authors using additions such as granite quarry dust [43] or marble [54]. The opposite pattern was observed for mean pore size (Table 4), which declined considerably with rising percentages of ACMW.…”

Performance of Concrete with Waste Granite Powder: The Effect of Superplasticizers

“…In addition, they concluded that granite sludge may be effectively used in concrete bricks, paving units, and cement tiles' production. An enhanced durability of concrete incorporating granite sludge was also demonstrated in the study conducted by Medina et al [13], in 2018, with aesthetically sensitive applications. Vazzoler et al [14], in 2018, investigated the microstructural characteristics of paste produced with ornamental stone processing waste after heat treatment showing low pozzolanic activity, resulting in a denser final product due to the filler effect and a probable small pozzolanic reaction.…”

Assessment for Sustainable Use of Quarry Fines as Pavement Construction Materials: Part I—Description of Basic Quarry Fine Properties

“…Quarry fines have been proven to be effective in mitigating the early decreasing of strength due to fly ash application [22]. It was also found that the partial replacement of cement by granite quarry dust is beneficial in several aspects including good durable behavior, less drying shrinkage and expansion, lower possibility of early-age cracking, while keeping strength properties comparable [23]. When used as stabilizer, quarry waste could improve the properties of soils in terms of better workability, a decrease in optimal water content and an increase in maximum dry unit weight [24,25], better swell and shrinkage properties for expansive soil [26], and satisfactory durability under freeze-thaw cycles [27].…”

“…Extended research attempts have been made to utilize quarry waste in constructions for both non-bearing [21,29] and structural purposes [20,22,23,29,30,31]. Non-bearing blocks made of quarry waste and other additives are common for wall partitions and decorations.…”