{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T04:57:18Z","timestamp":1780376238155,"version":"3.54.1"},"reference-count":24,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2022,12,1]],"date-time":"2022-12-01T00:00:00Z","timestamp":1669852800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Shenzhen University","award":["GDDCE18-1"],"award-info":[{"award-number":["GDDCE18-1"]}]},{"name":"Shenzhen University","award":["CM2018-08"],"award-info":[{"award-number":["CM2018-08"]}]},{"name":"Shenzhen University","award":["52178238"],"award-info":[{"award-number":["52178238"]}]},{"name":"Southeast University","award":["GDDCE18-1"],"award-info":[{"award-number":["GDDCE18-1"]}]},{"name":"Southeast University","award":["CM2018-08"],"award-info":[{"award-number":["CM2018-08"]}]},{"name":"Southeast University","award":["52178238"],"award-info":[{"award-number":["52178238"]}]},{"name":"National Natural Science Foundation of China","award":["GDDCE18-1"],"award-info":[{"award-number":["GDDCE18-1"]}]},{"name":"National Natural Science Foundation of China","award":["CM2018-08"],"award-info":[{"award-number":["CM2018-08"]}]},{"name":"National Natural Science Foundation of China","award":["52178238"],"award-info":[{"award-number":["52178238"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this study, the terahertz (THz) spectra of C3S were obtained in the 0.4\u20132.3 THz frequency range using different sample preparation methods. In the spectra, a sharp absorption peak of C3S was found at 2.03 THz. Under controlled conditions, the mass ratio of C3S was the most critical factor affecting the strength of the absorption peak, and the absorption coefficient followed the Beer\u2013Lambert law, exhibiting a linear relationship with the mass ratio of C3S. The intrinsic dielectric constants of C3S and polyethylene (PE) were calculated in accordance with the Maxwell\u2013Garnett (MG), Bruggeman (BM), and Landau\u2013Lifshitz\u2013Loovenga (LLL) models, using two-phase composite samples. The results show that the LLL model had the highest accuracy.<\/jats:p>","DOI":"10.3390\/s22239354","type":"journal-article","created":{"date-parts":[[2022,12,1]],"date-time":"2022-12-01T05:03:18Z","timestamp":1669870998000},"page":"9354","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Terahertz Time-Domain Spectroscopic Study of Tricalcium Silicate"],"prefix":"10.3390","volume":"22","author":[{"given":"Wentao","family":"Zhang","sequence":"first","affiliation":[{"name":"College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ya","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lidan","family":"Tian","sequence":"additional","affiliation":[{"name":"College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linhao","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiangyu","family":"Li","sequence":"additional","affiliation":[{"name":"College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"12560","DOI":"10.3390\/s150612560","article-title":"Characterization of Wheat Varieties Using Terahertz Time-Domain Spectroscopy","volume":"15","author":"Ge","year":"2015","journal-title":"Sensors"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"120632","DOI":"10.1016\/j.saa.2021.120632","article-title":"Critical spectroscopic considerations towards reliable detection of material using terahertz time-domain spectroscopy","volume":"268","author":"Garg","year":"2022","journal-title":"Spectrochim. Acta Part A Mol. Biomol. Spectrosc."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"448","DOI":"10.1080\/05704928.2013.847845","article-title":"The application of terahertz spectroscopy to protein detection: A review","volume":"49","author":"Xie","year":"2014","journal-title":"Appl. Spectrosc. Rev. Int. J. Princ. Methods Appl."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2702","DOI":"10.1021\/acsomega.8b03311","article-title":"Pulsed Terahertz Radiation for Sensitive Quantification of Carbonate Minerals","volume":"4","author":"Sakai","year":"2019","journal-title":"ACS Omega"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"124524","DOI":"10.1016\/j.optcom.2019.124524","article-title":"Sensitive characterizations of natural dolomite by terahertz time-domain spectroscopy","volume":"456","author":"Hao","year":"2020","journal-title":"Opt. Commun."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Zhao, Y., Liu, X., Chen, B., Yang, F., Zhang, Y., Wang, P., and Robinson, I. (2019). Three-Dimensional Characterization of Hardened Paste of Hydrated Tricalcium Silicate by Serial Block-Face Scanning Electron Microscopy. Materials, 12.","DOI":"10.3390\/ma12121882"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Dolado, J.S., Goracci, G., Duque, E., Martauz, P., Zuo, Y., and Ye, G. (2020). THz Fingerprints of Cement-Based Materials. Materials, 13.","DOI":"10.3390\/ma13184194"},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Ray, S., Devi, N., Dash, J., Sasmal, S., and Pesala, B. (2016, January 4\u20138). Effect of Nano-Silica Incorporation on Cement Hydration Dynamics Studied Using Terahertz Spectroscopy. Proceedings of the International Conference on Fibre Optics and Photonics, Kanpur, India.","DOI":"10.1364\/PHOTONICS.2016.Th3A.88"},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Dash, J., Ray, S., Nallappan, K., Sasmal, S., and Pesala, B. (2014). Terahertz spectroscopy of concrete for evaluating the critical hydration level. Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VII, SPIE.","DOI":"10.1117\/12.2041208"},{"key":"ref_10","first-page":"1666","article-title":"Research on Scattering in the THz Quantitative Analysis","volume":"36","author":"Li","year":"2016","journal-title":"Guang Pu Xue Yu Guang Pu Fen Xi"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"408","DOI":"10.1109\/TTHZ.2016.2538641","article-title":"Influence of Particle Size on Optical Constants from Pellets Measured with Terahertz Pulsed Spectroscopy","volume":"6","author":"Bardon","year":"2016","journal-title":"IEEE Trans. Terahertz Sci. Technol."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"3674","DOI":"10.1021\/ac302017d","article-title":"Impact of pellet thickness on quantitative terahertz spectroscopy of solid samples in a polyethylene matrix","volume":"85","author":"Namkung","year":"2013","journal-title":"Anal. Chem."},{"key":"ref_13","first-page":"3054","article-title":"The Study on the Far-FTIR and THz Spectra of Azitromycin Drugs with Different Physical Forms","volume":"35","author":"Yang","year":"2015","journal-title":"Guang Pu Xue Yu Guang Pu Fen Xi"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"402","DOI":"10.1109\/TTHZ.2021.3063804","article-title":"Terahertz Permittivity of Pressed ZnO and CuO Powder in Polyethylene Pellets: Effect of Porosity","volume":"11","author":"Locquet","year":"2021","journal-title":"IEEE Trans. Terahertz Sci. Technol."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"4426","DOI":"10.1039\/D0CP06707E","article-title":"Effective Debye relaxation models for binary solutions of polar liquids at terahertz frequencies","volume":"23","author":"Zhou","year":"2021","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Im, J., Goo, T., Kim, J., Choi, S., Hong, S.J., and Bahk, Y.M. (2021). Detection of Microplastic in Salts Using Terahertz Time-Domain Spectroscopy. Sensors, 21.","DOI":"10.3390\/s21093161"},{"key":"ref_17","unstructured":"Wang, Z.G. (2021). Terahertz Spectroscopic Study of Hardened Cement Paste. [Master\u2019s Thesis, Taiyuan University of Technology]."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Scheller, M., Wietzke, S., Jansen, C., Jordens, C., Lehnhardt, M., and Koch, M. (2009, January 21\u201325). Applications for effective medium theories in the terahertz regime. Proceedings of the 2009 34th International Conference on Infrared, Millimeter, and Terahertz Waves, Busan, Korea.","DOI":"10.1109\/ICIMW.2009.5324654"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1244","DOI":"10.1364\/JOSAA.33.001244","article-title":"Introduction to the Maxwell Garnett approximation: Tutorial","volume":"33","author":"Markel","year":"2016","journal-title":"J. Opt. Soc. Am. A"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"065415","DOI":"10.1088\/0022-3727\/42\/6\/065415","article-title":"Modelling heterogeneous dielectric mixtures in the terahertz regime: A quasi-static effective medium theory","volume":"42","author":"Scheller","year":"2009","journal-title":"J. Phys. D Appl. Phys."},{"key":"ref_21","first-page":"3180","article-title":"The Lambert-Beer\u2019s law characterization of formal analysis in Terahertz spectrum quantitative testing","volume":"33","author":"Su","year":"2013","journal-title":"Spectrosc. Spectr. Anal."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Qu, F., Lin, L., Cai, C., Dong, T., He, Y., and Nie, P. (2018). Molecular Characterization and Theoretical Calculation of Plant Growth Regulators Based on Terahertz Time-Domain Spectroscopy. Appl. Sci., 8.","DOI":"10.3390\/app8030420"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1015","DOI":"10.1007\/s10762-018-0507-1","article-title":"Experimental and Theoretical Study on Terahertz Absorption Characteristics and Spectral De-noising of Three Plant Growth Regulators","volume":"39","author":"Qu","year":"2018","journal-title":"J. Infrared Millim. Terahertz Waves"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s11082-015-0273-4","article-title":"Complex dielectric properties of anhydrous polycrystalline glucose in the terahertz region","volume":"48","author":"Sun","year":"2016","journal-title":"Opt. Quantum Electron."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/23\/9354\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:31:58Z","timestamp":1760146318000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/23\/9354"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,12,1]]},"references-count":24,"journal-issue":{"issue":"23","published-online":{"date-parts":[[2022,12]]}},"alternative-id":["s22239354"],"URL":"https:\/\/doi.org\/10.3390\/s22239354","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,12,1]]}}}