Performance study of alkali-activated phosphate slag-granulated blast furnace slag composites: effect of the granulated blast furnace slag content

• Autorzy: Zhang Yannian , Yang Daokui , Wang Qingjie

Identyfikatory

DOI

10.1007/s43452-023-00724-5

• Języki publikacji: EN

Abstrakty

EN

Alkali-activated materials (AAMs) are a kind of hardened slurry produced by an alkali activation reaction between a silicate precursor and an alkali activator that is treated as an environmentally friendly cementitious material that can be used in place of ordinary Portland cement (OPC). However, some studies point out that the AAMs with a single precursor had some defects. To realize the high value-added utilization of phosphorus slag (PS), this paper mixed PS with granulated blast furnace slag (GBFS) to prepare alkali-activated composite cementitious materials. The workability, mechanical properties, and hydration of alkali-activated phosphorus slag—granulated blast furnace slag (AAPG) were characterized using fluidity, setting time, compressive strength, flexural strength, hydration heat, XRD, FTIR, TG-DSC, and SEM + EDS. The results show that GBFS can improve the fluidity of AAPG, but the slurry will flash set after exceeding 20% GBFS content. GBFS can rapidly hydrate to generate C-S–H to improve its early strength, but the later stage results in larger pores due to the uneven distribution of matrix products. The hydration generation products of AAPG are C-S–H and C-(N)-A-S–H dominated by the Q2 unit, with some hydrotalcite by-products generated.

Słowa kluczowe

EN

alkali activated phosphate slag; granulated blast furnace slag; workability; mechanical properties; hydration

PL

żużel wielkopiecowy; urabialność; właściwości mechaniczne; uwodnienie

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 3
• Strony: art. no. e181, 2023
• Opis fizyczny: Bibliogr. 51 poz., rys., wykr.

Twórcy

autor

Zhang Yannian

• School of Civil Engineering, Jilin University of Architecture and Technology, Changchun 130114, China
• School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

autor

Yang Daokui

• School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

autor

Wang Qingjie

• School of Science, Shenyang Jianzhu University, Shenyang 110168, China

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)