New non-destructive method for testing the strength of cement mortar material based on vibration frequency of steel bar: Theory and experiment

Simple item page
dc.contributor.authorShi, Hao
dc.contributor.authorSong, Lei
dc.contributor.authorChen, Wenlong
dc.contributor.authorZhang, Houquan
dc.contributor.authorWang, Guozhu
dc.contributor.authorYuan, Guotao
dc.contributor.authorZhang, Wenliang
dc.contributor.authorChen, Guiwu
dc.contributor.authorWang, Yu
dc.contributor.authorLin, Gang
dc.date.accessioned2020-10-09T14:47:26Z
dc.date.available2020-10-09T14:47:26Z
dc.date.issued2020-09-30
dc.description.abstractTimely and accurately obtaining the strength of pouring material, e.g., concrete, cement mortar, is of great significance for engineering construction. In this paper, a non-destructive, economical and accurate strength detection method that suites for on-site using is proposed for the steel bar cement mortar material. The method based on the relationship between the vibration frequency of the steel bar and the properties of the mortar material, which is obtained by solving the Euler-Bernoulli beam problem. Both Particle Flow Code (PFC) software simulation (calibrated) and Split Hopkinson pressure Bar experiment on test samples of cement mortar and steel bar were performed to verify the theoretically obtained relationship. Studies on samples of various aggregate ratio further confirmed such correspondence. Results show that the dynamic stiffness of the cement mortar material dominates the calculation of the vibration frequency of steel bar, while the combined effect of the density, length, elastic modulus, inertia moment of the steel bar can be safely ignored. A single-valued mapping relation exists in between the dynamic stiffness coefficient and the Uniaxial Compressive Strength (UCS) of the cement mortar sample, i.e., increased dynamic stiffness coefficient with increasing UCS. Both experimental and predicted results showed a linear relationship between the vibration frequency of the steel bar and the strength of the mortar material. Fitted linear relations were proposed with coefficients depending on sample size and aggregate ratio and might serve as a good indicator for the strength of the mortar material. Further studies on the effect of internal defects of the mortar materials as well as on samples of more size and aggregate ratio are required to make the proposed method a practical toolen_UK
dc.identifier.citationShi H, Song L, Chen W, et al., (2020) New non-destructive method for testing the strength of cement mortar material based on vibration frequency of steel bar: Theory and experiment. Construction and Building Materials, Volume 262, November 2020, Article number 120931en_UK
dc.identifier.issn0950-0618
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2020.120931
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15871
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAggregate ratioen_UK
dc.subjectTheory and experimenten_UK
dc.subjectStrength detectionen_UK
dc.subjectVibration frequency of steel baren_UK
dc.subjectCement mortar materialen_UK
dc.titleNew non-destructive method for testing the strength of cement mortar material based on vibration frequency of steel bar: Theory and experimenten_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
New_non-destructive_method_for_testing_the_strength_of_cement_mortar-2020.pdf
Size:
3.44 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SWEE)