超声透射法测定砂浆凝结时间试验研究
Experimental Study on Determination of Mortar Setting Time by Ultrasonic Reflection Method
DOI: 10.12677/HJCE.2019.83054, PDF,   
作者: 杨 辉：上海建科检验有限公司，上海
关键词: 超声波；超声反射法；砂浆；凝结时间；Ultrasonic Wave； Ultrasonic Reflection Method； Mortar； Setting Time
摘要: 试验研究了频率和测距等因素对超声透射法测定砂浆凝结时间的影响，并讨论了采用超声透射法确定砂浆凝结时间的方法。试验结果表明，装置参数设置为54 kHz频率和40 mm测距时，可获得清晰、可靠的超声波信号，且试验过程较为简便。超声波声速增长起点对应的时间与贯入阻力法测得的凝结时间十分接近，可用于超声透射法确定砂浆的凝结时间。
Abstract: The effects of frequency and ranging on the determination of mortar setting time by ultrasonic re-flection method were studied. The method of determining the setting time of mortar by ultrasonic reflection method was discussed. The test results show that when the device parameters are set to 54 kHz frequency and 40 mm ranging, clear and reliable ultrasonic signals can be obtained, and the test process is relatively simple. The time corresponding to the starting point of the ultrasonic sound velocity growth is very close to the setting time measured by the penetration resistance method, and can be used for determining the setting time of the mortar by the ultrasonic reflection method.
文章引用：杨辉. 超声透射法测定砂浆凝结时间试验研究[J]. 土木工程, 2019, 8(3): 467-472. https://doi.org/10.12677/HJCE.2019.83054

参考文献

[1] Trtnik, G., Turk, G., Kavcic, F. and Bosiljkov, V.B. (2008) Possibilities of Using the Ultrasonic Wave Transmission Method to Estimate Initial Setting Time of Cement Paste. Cement and Concrete Research, 38, 1336-1342. [Google Scholar] [CrossRef] 
[2] Ghoddousi, P., Javid, A.A.S., Sobhani, J. and Alamdari, A.Z. (2016) A New Method to Determine Initial Setting Time of Cement and Concrete Using Plate Test. Materials and Structures, 49, 3135-3142. [Google Scholar] [CrossRef] 
[3] Hofmann, M.P., Nazhat, S.N., Gbureck, U. and Barralet, J.E. (2006) Real-Time of the Setting Reaction of Brushite-Forming Cement Using Isothermal Differential Scanning Calo-rimetry. Journal of Biomedical Materials Research Part B: Applied Biomaterials, 79B, 360-364. [Google Scholar] [CrossRef] [PubMed]
[4] Reinhardt, H.W. and Grosse, C.U. (2004) Continuous Monitoring of Setting and Hardening of Mortar and Concrete. Construction and Building Materials, 18, 145-154. [Google Scholar] [CrossRef] 
[5] Trtnik, G. and Gams, M. (2013) The Use of Frequency Spectrum of Ultrasonic P-Waves to Monitor the Setting Process of Cement Pastes. Cement and Concrete Research, 43, 1-11. [Google Scholar] [CrossRef] 

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