Ultrasonic monitoring of capillary porosity and elastic properties in hydrating cement paste
Source abstract
Abstract
Abstract A test procedure for monitoring changes in the amplitude of horizontally polarized ultrasonic shear waves from the surface of hydrating cement paste is presented. A theoretical framework based on a poro-elastic idealization of the hydrating cement paste is developed for interpreting the ultrasonic reflection data. The poro-elastic representation of hydrating cement paste is shown to provide simultaneous, realistic estimates of porosity and shear modulus for hydrating cement paste through setting and early strength gain. The porosity predicted by the poro-elastic representation is identical to the capillary porosity predicted by Powers’ model. The shear modulus of the poro-elastic skeleton was found to agree favorably with the value of shear modulus obtained from a vibration-based measurement. Data from cement paste with different water-to-cement ratios indicates a very non-linear relationship between capillary porosity and shear modulus. While there is a steady decrease in the porosity in the first 24 h, there is initially an exponential increase in the shear modulus up to the end of the acceleration period, which is followed by a period with a slower rate of increase.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Drilling and Well Engineering · Grouting, Rheology, and Soil Mechanics · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
Show source-provided references
1. The surface area of hardened cement paste as measured by various techniques
2. A multi-technique investigation of the nanoporosity of cement paste10.1016/j.cemconres.2006.03.021 ↗
3. Direct observation of cement hydration by soft X-ray transmission microscopy10.1023/A:1025731210337 ↗
4. Thermogravimetric and sorption studies of methanol exchange in alite paste10.1016/0008-8846(83)90123-0 ↗
5. Physical structure of hardened cement paste. A classical approach10.1007/BF02472146 ↗
6. Studies of the physical properties of hardened Portland cement paste
7. Structure and physical properties of hardened Portland cement paste10.1111/j.1151-2916.1958.tb13494.x ↗
8. Characterization and modeling of pores and surfaces in cement paste: correlations to processing and properties10.3151/jact.6.5 ↗
9. Fernandez MMC. Effect of particle size on the hydration kinetics and microstructural development of tricalcium silicate. Ph.D. thesis. École Polytechnique Federale De Lausanne; 2008.
10. Sant G, Rajabipour F, Fishman P, Lura P, Weiss J. Electrical conductivity measurements in cement pastes at early ages: a discussion of the contribution of pore solution conductivity, volume, and connectivity to the overall electrical response. In: Reinhardt HW, editor. Advanced testing of fresh cementitious materials. Stuttgart, Germany; August 3–4, 2006.
11. Curing, hydration, and microstructure of cement paste
12. Percolation of phases in a three-dimensional cement paste microstructural model10.1016/0008-8846(91)90014-9 ↗
13. Experimental study and numerical simulation on the formation of microstructure in cementitious materials at early age10.1016/S0008-8846(02)00891-8 ↗
14. Application of X-ray computed tomography to characterise the early hydration of calcium aluminate cement10.1016/S0958-9465(01)00063-4 ↗
15. Monitoring the setting behavior of cementitious materials using one-sided ultrasonic measurements10.1016/j.cemconres.2004.10.028 ↗
16. Properties of early-age Portland cement mortar monitored with shear wave reflection method
17. Ultrasonic measurement of viscoelastic shear modulus development in hydrating cement paste10.1016/j.ultras.2010.02.010 ↗
18. Nondestructive measurement of concrete strength by an ultrasonic wave reflection method10.1617/13854 ↗
19. An investigation of microstructure evolution in hydrating cement paste through setting using ultrasonic and rheological measurements10.1016/j.cemconres.2009.09.018 ↗
20. A multiscale micromechanics model for the autogenous-shrinkage deformation of early-age cement-based materials10.1016/j.engfracmech.2006.01.034 ↗
21. Is concrete a poromechanics material? A multiscale investigation of poroelastic properties10.1617/14100 ↗
22. A multiscale micromechanics-hydration model for the early-age elastic properties of cement-based materials10.1016/S0008-8846(03)00039-5 ↗
23. Modeling shrinkage of Portland cement paste
24. Coussy · 2004
25. Theory of propagation of elastic waves in a fluid-saturated porous solid. I. Low-frequency range10.1121/1.1908239 ↗
26. Theory of propagation of elastic waves in a fluid-saturated porous solid. II. Higher frequency range10.1121/1.1908241 ↗
27. Reflection of acoustic-waves at a water–sediment interface10.1121/1.386692 ↗
28. A comparison between wave-propagation in water-saturated and air-saturated porous materials10.1063/1.354035 ↗
29. Analytical solutions for harmonic wave propagation in poroelastic media10.1061/(ASCE)0733-9399(1994)120:10(2154) ↗
30. Acoustic slow waves and the consolidation transition10.1121/1.388036 ↗
31. An inversion for Biot parameters in water-saturated sand10.1121/1.1511199 ↗
32. On uniqueness in dynamic poroelasticity10.1785/BSSA0530040783 ↗
33. Interface conditions for Blot’s equations of poroelasticity10.1121/1.426874 ↗
34. Ultrasonic shear wave reflection method for measurements of the viscoelastic properties of polymer films10.1063/1.1147643 ↗
35. The influence of mixing on the rheology of fresh cement paste10.1016/S0008-8846(99)00124-6 ↗
36. Self-calibrating ultrasonic technique for crack depth measurement10.1007/BF00568293 ↗
37. Ultrasonic technique for monitoring concrete strength gain at early age
38. Taylor HFW, Portland cement: hydration products. In: Roy D, editor. Instructional modules in cement science, a publication of materials education council. PA: Materials Research Laboratory University Park; 1985.
39. Determining elastic properties of concrete using vibrational resonance frequencies of standard test cylinders
40. Confirmation of Biot’s theory10.1063/1.91951 ↗
41. Observation of a second bulk compressional wave in a porous medium at ultrasonic frequencies10.1063/1.91445 ↗
42. Permeability and pore structure of OPC paste10.1016/S0008-8846(00)00474-9 ↗
43. Mindess · 1981
44. Voigt T. The application of an ultrasonic shear wave reflection method for nondestructive testing of cement-based materials at early age. PhD thesis. Germany: University of Leipzig; 2004.
45. Measurements of the frame acoustic properties of porous and granular materials10.1121/1.2130929 ↗
46. Boumiz A, Sorrentino D, Vernet C, Cohen Tenoudji F. Modelling the development of the elastic moduli as a function of the hydration degree of cement pastes and mortars. In: Nonat A, editor. Proceedings 2nd international RILEM symposium, hydration and setting, RILEM, Cachan Cedex, France; 2000. p. 295–316.
47. Evolution of porosity in a Portland cement paste studied through positron annihilation lifetime spectroscopy10.1016/S0969-806X(03)00221-4 ↗
48. Chemical shrinkage and autogenous shrinkage of hydrating cement paste10.1016/0008-8846(95)00011-9 ↗
49. Chemical shrinkage of Portland cement pastes10.1016/0008-8846(82)90021-7 ↗
50. Percolation of capillary pores in hardening cement pastes10.1016/j.cemconres.2004.07.033 ↗
51. Modelling elasticity of a hydrating cement paste10.1016/j.cemconres.2007.07.003 ↗
52. Comparison of measured and calculated permeabilities for hardened cement paste10.1016/0008-8846(96)00130-5 ↗
53. Capillary continuity or discontinuity in cement pastes
54. Propagation of ultrasound through hydrating cement pastes at early times10.1016/1065-7355(93)90004-8 ↗
55. Mechanics of deformation and acoustic propagation in porous media10.1063/1.1728759 ↗
56. Biot model of sound propagation in water-saturated sand10.1121/1.412304 ↗