Effects of Lime Powder on the Properties of Portland Cement-Sulphoaluminate Cement Composite System at Low Temperature.

Ge Zhang, Bei Zhang, Yixin Hao, Qianbiao Pang, Lei Tian, Ruyan Ding, Lin Ma, Hui Wang

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Article in Materials (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Ge ZhangCollege of Material Science and Technology, Xi'an University of Architecture & Technology, Xi'an 710055, China.

Bei ZhangCollege of Material Science and Technology, Xi'an University of Architecture & Technology, Xi'an 710055, China.

Yixin HaoCollege of Material Science and Technology, Xi'an University of Architecture & Technology, Xi'an 710055, China.

Qianbiao PangCollege of Material Science and Technology, Xi'an University of Architecture & Technology, Xi'an 710055, China.

Lei TianCollege of Material Science and Technology, Xi'an University of Architecture & Technology, Xi'an 710055, China.

Ruyan DingCollege of Material Science and Technology, Xi'an University of Architecture & Technology, Xi'an 710055, China.

Lin MaCollege of Material Science and Technology, Xi'an University of Architecture & Technology, Xi'an 710055, China.

Hui WangNingbo Key Laboratory of Energy Geostructure, Ningbo 315211, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In order to reduce the risk of early freezing damage to cement-based materials in winter construction, lime powder was used to improve the properties of the Portland cement-sulphoaluminate cement (PC-CSA) composite system at low temperatures. In this study, the effects of lime powder dosage on the properties of a PC-CSA blended system with two proportions (PC:CSA = 9:1 and 7:3) at -10 °C were investigated, and the mechanisms of improvement were revealed. The results showed that the compressive strength of the PC-CSA composite system was effectively improved, and the setting time was shortened by the addition of lime powder. Lime powder could effectively act as an early heating source in the PC-CSA composite system, as the maximum temperature of samples exposed to sub-zero temperatures was increased and the time before dropping to 0 °C was prolonged by the addition of lime powder. The extra CH generated by the hydration of lime powder provided an added hydration path for C

Indexed as

lime powderlow temperaturePortland cement–sulphoaluminate cement

Identifiers

PMID39124322

DOI10.3390/ma17153658

PMCPMC11313355

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