Popovics S, Asce F & Ujhelyi J: “Contribution to the Concrete Strength versus Water- Cement Ratio Relationship”. <em>Journal of Materials in Civil Engineering</em>, 2008, Vol. 20, No. 7, pp. 459–463.
Park S H, Ryu H S & Park W J: “Influence of Unit Water Content Control on Concrete Performance in the Ready-Mixed Concrete Production Process”, <em>Materials</em>, 2024, Vol. 17, No. 4:834.
Aliabdo A A, Abd Elmoaty A E M & Salem H A: “Effect of Water Addition, Plasticizer and Alkaline Solution Constitution on Fly Ash Based Geopolymer Concrete Performance”. <em>Construction and Building Materials</em>, 2016, Vol. 121, pp. 694–703.
Mardmomen S, Chen H L & Leon G: “Revised Method for Rapid Determination of On-Site Water–Cement Ratio Using Microwave Oven”. <em>Transportation Research Record</em>, 2019, Vol. 2673, No. 8, pp. 1–10.
Yu X & Liu Y: “Highway IDEA Program Development of Time Domain Reflectometry Instrument for QA/QC of Fresh and Early Stage Concrete”, Final Report for Highway IDEA, Project 126, Case Western Reserve University, Civil Engineering Department, Cleveland, Ohio, USA, 2010, 53 pp.
Dowell A & Cramer S: “Field Measurement of Water-Cement Ratio for Portland Cement Concrete-Phase II Field Evaluation and Development”, Wisconsin Highway Research Program, Technical Report, Report No. WHRP 02-002, Department of Civil Engineering, University of Wisconsin, Madison, USA, 2002, 50 pp.
Chen W, Shen, P & Shui Z: “Determination of Water Content in Fresh Concrete Mix Based on Relative Dielectric Constant Measurement”, <em>Construction and Building Materials</em>, 2012, Vol. 34, pp. 306–312.
Makul N, Rattanadecho P & Agrawal D K: “Applications of Microwave Energy in Cement and Concrete – A Review”. <em>Renewable and Sustainable Energy Reviews</em>, 2014, Vol. 37, pp. 715–733.
Naik T R & Ramme B W: “Determination of the Water Content of Concrete by the Microwave Method”, <em>Cement and Concrete Research</em>, 1987, Vol. 17, No. 6, pp. 927–938.
Nagi M & Whiting D: “Determination of Water Content of Fresh Concrete Using a Microwave Oven”. <em>Cement, Concrete and Aggregates</em>, 1994, Vol. 16, pp. 125–131.
Wang K & Hu J: “Use of a Moisture Sensor for Monitoring the Effect of Mixing Procedure on Uniformity of Concrete Mixtures”, <em>Journal of Advanced Concrete Technology</em>, 2005, Vol. 3, No. 3, pp. 371–383.
Al-Neshawy F, Ojala T & Punkki J: “Stability of Air Content in Fresh Concretes with PCEBased Superplasticizers”. <em>Nordic Concrete Research</em>, 2019, Vol. 60, pp. 145–158.
Wang X, Wang X, Sadati S, Wang K, Taylor P & Sirotiak T: “Increase in Concrete Air Content Due to Excessive Internal Vibration”. <em>Journal of Materials in Civil Engineering </em>2024, Vol. 36, No. 2:04023576.
Finnish Standards: “SFS-EN 480-11:2006, Admixtures for concrete, mortar and grout. Test methods. Part 11: Determination of air void characteristics in hardened concrete”, Helsinki, Finland, 2006, 21 pp.
Lazniewska-Piekarczyk B & Gołaszewski J: “Relationship Between Air-Content in Fresh Cement Paste, Mortar, Mix and Hardened Concrete Acc. to PN-EN 480-1 with Air- Entraining CEM II/B-V<em>”, IOP Conference Series: Materials Science and Engineering</em>, 2019, Vol. 471. No 3:032044.
Tregger N, Loose D, Durning T, Jeknavorian A, Mansky E, Klaus S: “Introducing a new sensor for in-mixer air volume measurement”, <em>Proceedings of 2013 PCI Convention</em>, 2013.
Yu X, Drnevich V P & Olek J: “Time Domain Reflectometry for Measuring Water/cement Ratio of Concrete”, <em>In Proceedings of the International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur</em>, RILEM Publications SARL, 2004.
Siddiqui S I, Drnevich, V P & Deschamps R J, “Time Domain Reflectometry Development for Use in Geotechnical Engineering”. <em>Geotechnical Testing Journal</em>, 2000, Vol. 23, pp. 9–20.
Siddiqui S I & Drnevich V P: “A new method of Measuring Density and Moisture Content of Soil Using the Technique of Time Domain Reflectometry”, Final Report, Report No. FHWA/IN/JHRP-95/9, Joint Highway Research Project, School of Civil Engineering, Indiana Department of Transportation, Indianapolis, Indiana, 1995, 282 pp.
Wood A B: “A Textbook of Sound: Being an Account of the Physics of Vibrations with Special Reference to Recent Theoretical and Technical Developments” First edition, The Macmillan Company, New York, 1930.
Yang L, An X & Du S: “Estimating Workability of Concrete with Different Strength Grades Based on Deep Learning”, <em>Measurement</em>, 2021, Vol. 186:110073.
Coenen M, Vogel C, Schack T & Haist M: “Concrete Flow Transformer: Predicting Fresh Concrete Properties from Concrete Flow Using Vision Transformers”, <em>2023 European Conference on Computing in Construction, 40<sup>th</sup> International CIB W78 Conference</em>, Crete, Greece, 2023.
Tuan N M, Hau Q V, Chin S & Park S: “In-Situ Concrete Slump Test Incorporating Deep Learning and Stereo Vision”, <em>Automation in Construction</em>, 2021, Vol. 121:103432.
Ojala T & Punkki J: “Estimating the Workability of Concrete with a Stereovision Camera during Mixing”, <em>Sensors</em>, 2024, Vol. 24, No. 14:4472.
Zhang X, Akber M Z & Zheng W: “Predicting the Slump of Industrially Produced Concrete Using Machine Learning: A Multiclass Classification Approach”. <em>Journal of Building Engineering</em>, 2022, Vol. 58: 104997.