Welcome to Visit BULLETIN OF THE CHINESE CERAMIC SOCIETY! Today is

BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2020, Vol. 39 ›› Issue (12): 3924-3931.

Previous Articles     Next Articles

Influence of Basalt Fiber on Properties of Traditional Sticky Rice-Lime Mortar and Its Mechanism Analysis

YANG Lingming, ZHANG Weixiang, ZHOU Shaoqing   

  1. College of Civil and Environmental Engineering, Hunan University of Science and Engineering, Yongzhou 425199, China
  • Published:2021-02-01

Abstract: Application of sticky rice-lime mortar (SRLM) in the restoration of ancient buildings is restricted by its properties of early strength, shrinkage and freeze-thaw. The influence of basalt fiber content and sticky rice paste concentration on the mechanical properties of sticky rice-lime mortar and its mechanism were studied by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that the position, size and morphology of calcium carbonate crystals are controlled by sticky rice paste concentration, and has a great influence on the early strength, shrinkage, temperature resistance, freeze-thaw properties of sticky rice-lime mortar. The mechanical properties are the best when the mass fraction of sticky rice paste is 6.5%. Characteristics of cavity structure and mini-diameter of the basalt fiber improves the mechanical properties of sticky rice-lime mortar. The 28 d compressive strength and flexural strength increase by 436% and 150%, respectively, 7 d shrinkage rate decreases by 65%, and the freeze-thaw times increase obviously. Basalt fiber sticky rice-lime mortar has the best comprehensive performance when the mass fraction of basalt fiber is 5%. In practical application, it is feasible to improve the performance of sticky rice-lime mortar by adding a certain amount of basalt fiber.

Key words: ancient building restoration, sticky rice-lime mortar, sticky rice paste, basalt fiber, mechanical property, mechanism

CLC Number: