Title:    Knotted Shape Memory Polymers for Concrete Crack Closure - data

Citation
Maddalena R, Mihai I, (2020). Knotted Shape Memory Polymers for Concrete Crack Closure - data. Cardiff University. https://doi.org/10.17035/d.2019.0078702279

Dataset Details

Publisher: Cardiff University

Date (year) of data becoming publicly available: 2020

Coverage start date: 24/06/2019

Data format: xlsx, jpg, tiff, png

Estimated total storage size of dataset: Less than 10 gigabytes

Number of Files In Dataset: 50

DOI : 10.17035/d.2019.0078702279

DOI URL: http://doi.org/10.17035/d.2019.0078702279

Description

In this work, a novel crack-closure system is developed, using PET shape memory polymer fibres embedded in a mortar mix. The material has shape memory properties so upon thermal activation the fibres will shrink. A single knot manufactured at both ends of the fibresprovides a mechanical an- chorage to the mortar matrix. Mortar samples were pre-cracked and placed in an oven to thermally activate the polymers and induce shrinkage into the fibres. Crack-closure was measured in the range 50–100%, depending on the geometry, aspect ratio and distribution of the fibres.

In the dataset readers can find information on the samples studies (dimension of the beams and fibre content), and the measured crack width before and after thermal activation (in mm). Crack width was measured by optical microscope and data collected were then processed using AutoCad. 

A relation between fibre content in % (in x-axis) and crack-closure in % (in y-axis) is also included.

Research results based upon these data are published at http://doi.org/10.1016/j.cemconcomp.2020.103757