Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Utilization of waterglass coatings to improve the carbonization resistance of excess-sulphate phosphogypsum slag plastering mortar
https://orcid.org/0000-0002-3973-2933
https://orcid.org/0000-0003-4881-6757
Highlights The waterglass coating has a low dosage, but excellent anti carbonization effect for EPSPM. The waterglass coating can participate in the hydration reaction on the surface of EPSPM, what form a hard protective layer, and has good compatibility with the EPSC. The waterglass coating can seal the surface pores of EPSPM.
Abstract Excess-sulphate phosphogypsum slag plastering Mortar (EPSPM) is vulnerable to carbonization, thus reducing surface stabilities. This paper proposes a modification method to EPSPM by coating different modulus and amounts of waterglass (WG). Effects of WG coatings on the carbonation resistance, sand consolidation capacity, impurities stability and hydration products of EPSPM were evaluated. It turns that EPSPM coated with WG have more hydrates of ettringite and C-S-H gels in the mortar surface, which forms more compact structure than the uncoated one. The WG coatings can significantly improve the anti-carbonation and sand consolidation capacities. Meanwhile WG coating also accelerates the release of eutectic phosphorus, increases dissolved of phosphorus impurities. Coating WG of 2.4 modulus and 0.25 kg/m2 performs optimally, and is applicable for practical utilizations.
Utilization of waterglass coatings to improve the carbonization resistance of excess-sulphate phosphogypsum slag plastering mortar
https://orcid.org/0000-0002-3973-2933
https://orcid.org/0000-0003-4881-6757
Highlights The waterglass coating has a low dosage, but excellent anti carbonization effect for EPSPM. The waterglass coating can participate in the hydration reaction on the surface of EPSPM, what form a hard protective layer, and has good compatibility with the EPSC. The waterglass coating can seal the surface pores of EPSPM.
Abstract Excess-sulphate phosphogypsum slag plastering Mortar (EPSPM) is vulnerable to carbonization, thus reducing surface stabilities. This paper proposes a modification method to EPSPM by coating different modulus and amounts of waterglass (WG). Effects of WG coatings on the carbonation resistance, sand consolidation capacity, impurities stability and hydration products of EPSPM were evaluated. It turns that EPSPM coated with WG have more hydrates of ettringite and C-S-H gels in the mortar surface, which forms more compact structure than the uncoated one. The WG coatings can significantly improve the anti-carbonation and sand consolidation capacities. Meanwhile WG coating also accelerates the release of eutectic phosphorus, increases dissolved of phosphorus impurities. Coating WG of 2.4 modulus and 0.25 kg/m2 performs optimally, and is applicable for practical utilizations.
Utilization of waterglass coatings to improve the carbonization resistance of excess-sulphate phosphogypsum slag plastering mortar
https://orcid.org/0000-0002-3973-2933
https://orcid.org/0000-0003-4881-6757
Highlights The waterglass coating has a low dosage, but excellent anti carbonization effect for EPSPM. The waterglass coating can participate in the hydration reaction on the surface of EPSPM, what form a hard protective layer, and has good compatibility with the EPSC. The waterglass coating can seal the surface pores of EPSPM.
Abstract Excess-sulphate phosphogypsum slag plastering Mortar (EPSPM) is vulnerable to carbonization, thus reducing surface stabilities. This paper proposes a modification method to EPSPM by coating different modulus and amounts of waterglass (WG). Effects of WG coatings on the carbonation resistance, sand consolidation capacity, impurities stability and hydration products of EPSPM were evaluated. It turns that EPSPM coated with WG have more hydrates of ettringite and C-S-H gels in the mortar surface, which forms more compact structure than the uncoated one. The WG coatings can significantly improve the anti-carbonation and sand consolidation capacities. Meanwhile WG coating also accelerates the release of eutectic phosphorus, increases dissolved of phosphorus impurities. Coating WG of 2.4 modulus and 0.25 kg/m2 performs optimally, and is applicable for practical utilizations.
Utilization of waterglass coatings to improve the carbonization resistance of excess-sulphate phosphogypsum slag plastering mortar
Sun, Tao (Autor:in) / Xiao, Xiangyu (Autor:in) / Ouyang, Gaoshang (Autor:in) / Li, Wanmin (Autor:in) / Tang, Pei (Autor:in) / Wang, Ziyan (Autor:in)
01.10.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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