Research on ultrasonic characteristics and Brazilian splitting-tensile test of granite under post-high temperature

ZHI Le-peng; XU Jin-yu; LIU Zhi-qun; LIU Shi; CHEN Teng-fei

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Research on ultrasonic characteristics and Brazilian splitting-tensile test of granite under post-high temperature

更新时间：2026-06-25

- Research on ultrasonic characteristics and Brazilian splitting-tensile test of granite under post-high temperature
- Vol. 33, Issue S1, (2012)
- 作者机构：
  
  1. 空军工程大学工程学院,西安,710038
  2. 西北工业大学力学与土木建筑学院,西安,710072
  3. 空军工程大学校务部,西安,710051
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU452
- Online First：21 September 2012，
  
  Published：2012
- 稿件说明：
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ZHI Le-peng, XU Jin-yu, LIU Zhi-qun, et al. Research on ultrasonic characteristics and Brazilian splitting-tensile test of granite under post-high temperature[J]. 2012, 33(S1).
DOI：

ZHI Le-peng, XU Jin-yu, LIU Zhi-qun, et al. Research on ultrasonic characteristics and Brazilian splitting-tensile test of granite under post-high temperature[J]. 2012, 33(S1). DOI：

摘要

采用非金属超声检测分析仪和液压伺服试验系统装置，研究不同温度（25 ℃～1 000 ℃)作用后花岗岩的超声特性，分析不同温度条件下花岗岩的劈裂抗拉强度。结果表明，（1）高温后花岗岩的纵波波速、超声波形以及劈裂抗拉强度都与温度的变化密切相关；（2）随着温度的增高，花岗岩试样的纵波波速和劈裂抗拉强度逐渐减小，经历1 000 ℃高温后，纵波波速下降90%，劈裂抗拉强度下降65%，并且，纵波波速和抗拉强度间存在一定的相关性；（3）超声波波形随温度升高由整齐变混乱，由密集变稀疏，尤其在800 ℃波形变化最明显；（4）花岗岩试样的热损伤不断增加，经历1 000 ℃热损伤后，试样的脆性增加，变得轻脆易碎。

Abstract

Ultrasonic characteristics and splitting-tensile strength of granite after exposure at temperature ranging from 25 ℃ to 1 000 ℃ are studied using hydraulic servo system and ultrasonic detector SRM-5N. The results show that (1) the longitudinal wave velocity

waveform and splitting-tensile strength of the granite are closely related to temperature; (2) the longitudinal wave velocity and splitting-tensile strength of granite gradually decrease with the temperature increasing

when the granite is exposed at 1 000 ℃

the longitudinal wave velocity and splitting-tensile strength decrease by 90% and 65%

and the splitting-tensile strength is bound up with the longitudinal wave velocity; (3) with the temperature increasing

the waveform of granite turns from regular to disordered

from concentrated to scattered

especially at 800 ℃; (4) the thermal damage enlarges and the specimens become fragile after exposure at 1 000 ℃.

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