Strength and Expansion of LHEC with Different Gypsum Contents Under Thermal Curing.

ABSTRACT: Low-heat expansive cement (LHEC) is an environmentally friendly and low-carbon cementitious material. Compared to ordinary Portland cement (OPC), LHEC reduces CO₂ emissions from the cement production process; furthermore, it enhances the service life of the cement by overcoming the problem of OPC's strength inversion in hot and humid environments. In order to improve the performance of LHEC in a hygrothermal environment, the strength and expansion of LHEC with different gypsum dosages (8-20%) at curing temperatures of 20 °C, 50 °C, and 80 °C were investigated. The corresponding mechanism was investigated using XRD, TGA, SEM, and porosity analyses. The results indicate that there is a 'critical gypsum dosage' for strength at 20 °C. The 'critical dosage' rises with the curing temp

SUBMITTER: Jin B 

PROVIDER: S-EPMC11642297 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature