Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Comparative Study on the Mechanical Properties and Microstructure of Cement-Based Materials by Direct Electric Curing and Steam Curing

Version 1 : Received: 26 October 2021 / Approved: 27 October 2021 / Online: 27 October 2021 (14:25:44 CEST)

A peer-reviewed article of this Preprint also exists.

Yang, Z.; Xie, Y.; He, J.; Wang, F.; Zeng, X.; Ma, K.; Long, G. A Comparative Study on the Mechanical Properties and Microstructure of Cement-Based Materials by Direct Electric Curing and Steam Curing. Materials 2021, 14, 7407. Yang, Z.; Xie, Y.; He, J.; Wang, F.; Zeng, X.; Ma, K.; Long, G. A Comparative Study on the Mechanical Properties and Microstructure of Cement-Based Materials by Direct Electric Curing and Steam Curing. Materials 2021, 14, 7407.

Journal reference: Materials 2021, 14, 7407
DOI: 10.3390/ma14237407

Abstract

Direct electric curing (EC) is a new green curing method for cement-based materials that improves the early mechanical properties via the uniform high temperature produced by Joule heating. To understand the effects of EC and steam curing (SC) on the mechanical properties and microstructure of cement-based materials, the mortar was cured at different temperature-controlled curing regimes (40°C, 60°C and 80°C). Meanwhile, mechanical properties, hydrate phase and pore structure of specimens were investigated. The energy consumption of two curing methods was compared and analyzed. The results show that the EC specimens have better and more stable growth of mechanical strength. The pore structure of EC specimen is also better than that of SC specimen at different maintenance ages. However, the hydration degree and products of samples cured by EC are similar to that SC samples. The energy consumption of EC is lower than SC. This study provides an important technical support for the EC in the production of energy-saving and high early-strength concrete precast components.

Keywords

Direct electric curing; Steam curing; Mechanical properties; Microstructure; Joule heat; Energy consumption

Subject

ENGINEERING, Civil Engineering

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