Development of building material utilizing a low pozzolanic activity mineral

Liu, Changming; Wang, Lijiu; Zhang, Ting Ting; Dong, Jicheng

doi:10.1016/j.conbuildmat.2016.05.161

Cited by 17 publications

(16 citation statements)

References 29 publications

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“…Different natural alumino-silicate minerals have been investigated in the scientific literature in combination with traditional alkali-activated materials. In particular, granite [46][47][48], albite [49], Pietra serena [50], Pisha sandstone [51,52], cordierite [53], and diatomite [54] have been used in combination with metakaolin (MK) [48,50,53] and fly ash (FA) [47,51]. As previously mentioned, only a few works investigated the use of alumino-silicate stones alone [46,49,51,52,54], i.e., without any other 'active' component.…”

Section: Role Of Raw Materials Activators and Curing Conditionsmentioning

confidence: 99%

“…Due to the almost fully crystalline nature of the raw powder, the developed material represents a clear innovation in the field of alkali-activation processes [46]. Similarly, Li et al [51,52] investigated the alkali activation of Pisha sandstone (a Chinese sandstone) both alone [51,52] and mixed with FA [51]. Pisha sandstone is mainly composed of crystalline minerals, i.e., quartz and albite, with SiO 2 and Al 2 O 3 , accounting for approximatively 80 wt.% of the whole composition (Table 2).…”

Section: Role Of Raw Materials Activators and Curing Conditionsmentioning

confidence: 99%

“…Details related to curing conditions and alkaline solutions of the different reviewed papers are reported in Table 2. It can be observed that, in some researches, the materials were cured at 80 • C [46,47,51,52], even if in most of the works, curing at room temperature was preferred [48][49][50][52][53][54].…”

Section: Role Of Raw Materials Activators and Curing Conditionsmentioning

confidence: 99%

“…They showed that the strength decreased by increasing M s . On the contrary, in [52], the same authors tested different activators (Na 2 SiO 3 , Na 2 CO 3 , Na 2 SO 4 , and NaOH, respectively) in order to investigate the role of pH on the development of alkali-activated materials. They showed that the higher the pH, the stronger the materials.…”

Section: Role Of Raw Materials Activators and Curing Conditionsmentioning

confidence: 99%

“…Li et al [51,52] explored alkali activation of a Chinese sandstone (i.e., Pisha sandstone) both alone and mixed with FA, and investigated the effects of several parameters. First, for pure Pisha sandstone, the authors stated an important role of curing conditions; the 28 day compressive strength of samples cured under air (~6 MPa) is higher than that of water cured materials (~4 MPa) [51].…”

Section: Mechanical Properties Of Hardened Materialsmentioning

confidence: 99%

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Role of Natural Stone Wastes and Minerals in the Alkali Activation Process: A Review

et al. 2020

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This review aims to provide a comprehensive assessment concerning alkali activation of natural stone wastes and minerals. In particular, the structure of the review is divided into two main sections in which the works dealing with alumino-silicate and carbonatic stones are discussed, respectively. Alumino-silicate stones are generally composed of quartz and feldspars, while carbonatic stones are mainly made of calcite and dolomite. The role of these minerals in the alkali activation process is discussed, attesting their influence in the development of the final product properties. In most of the works, authors use mineral additions only as fillers or aggregates and, in some cases, as a partial substitution of more traditional raw powders, such as metakaolin, fly ash, and granulated blast furnace slag. However, a few works in which alumino-silicate and carbonatic stone wastes are used as the main active components are discussed as well. Not only the raw materials, but also the entire alkali activation process and the curing conditions adopted in the literature studies here reviewed are systematically analyzed to improve the understanding of their effect on the physical, mechanical, and durability properties of the final products and to eventually foster the reuse of natural stone wastes for the purposes of sustainability in different applications.

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