Analysis of the temperature effect on the stresses and deformations of GRP panels during the grouting process when using relining technology Cover

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Analysis of the temperature effect on the stresses and deformations of GRP panels during the grouting process when using relining technology

Studia Geotechnica et Mechanica

Volume 43 (2021): Issue s1 (December 2021)

By: Zuzanna Fyall

Open Access

|Dec 2021

Figures & Tables

The increase in peak temperature at the casing–grout boundary as a function of grout thickness for three different types of Portland cement grout [16].

Deformation modulus in relation to temperature for GRP pipes [6]. GRP, glass-reinforced plastic.

Assembly scheme and geometric characteristics of GRP panels: 1 – wooden spacer, 2 – grout, 3 – brick sewer, H – height from which the grout is distributed.

Stress distribution and deformations of the panel when the heat of hydration is equal to 25°C: (a) stress distribution, (b) 3D view of panel deformation, (c) 2D view of panel deformation with an indication of the location where the maximum value occurred.

Stress distribution and deformations of the panel when the heat of hydration is equal to 40°C: (a) stress distribution, (b) 3D view of panel deformation, (c) 2D view of panel deformation with an indication of the location where the maximum value occurred.

Stress distribution and deformations of the panel when the heat of hydration is equal to 50°C: (a) stress distribution, (b) 3D view of panel deformation, (c) 2D view of panel deformation with an indication of the location where the maximum value occurred.

Stress distribution and deformations of the panel when the heat of hydration is equal to 70°C: (a) stress distribution, (b) 3D view of panel deformation, (c) view of panel deformation with an indication of the location where the maximum value occurred.

Scheme presenting the distribution of grout in two stages: A – first stage, B – second stage.

The obtained results for a GRP panel with a wall thickness equal to 15 mm_

Temperature of GRP panel (°C)	Maximum normal stresses (MPa)	Deformations (%)
25	61.71	9.5
40	71.07	15.21
50	89.66	28.71
70	Total failure

The obtained results for the GRP panel with a wall thickness equal to 20 mm_

Temperature of GRP panel (°C)	Maximum normal stresses (MPa)	Deformations (%)
25	27.25	2.71
40	28.24	3.51
50	29.45	4.33
70	39.02	12.76

The obtained results for a GRP panel with a wall thickness equal to 16 mm_

Temperature of GRP panel (°C)	Maximum normal stresses (MPa)	Deformations (%)
25	49.59	6.42
40	54.19	9.95
50	62.25	14.53
70	Total failure

The obtained results for a GRP panel with a wall thickness equal to 18 mm_

Temperature of GRP panel (°C)	Maximum normal stresses (MPa)	Deformations (%)
25	36.56	4.41
40	36.71	5.93
50	39.50	7.75
70	78.67	52.04

The obtained results for a GRP panel with a wall thickness equal to 17 mm_

Temperature of GRP panel (°C)	Maximum normal stresses (MPa)	Deformations (%)
25	41.38	5.15
40	43.84	7.28
50	48.63	9.5
70	235.69	Total failure

The obtained results for the GRP panels that were heated up to 40°C with the grout distributed in the second stage_

Wall thickness (mm)	Temperature of grout equal to 25°C		Temperature of grout equal to 40°C

	Maximum normal stresses (MPa)	Deformations (%)	Maximum normal stresses (MPa)	Deformations (%)
20	13.40	0.72	13.74	1.14
19	14.91	1.14	15.17	1.53
18	16.73	1.14	17.08	1.53
17	18.95	1.53	19.45	1.92
16	21.97	1.92	22.47	2.31
15	25.36	2.31	26.46	3.11

DOI: https://doi.org/10.2478/sgem-2021-0032 | Journal eISSN: 2083-831X | Journal ISSN: 0137-6365

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Language: English

Page range: 521 - 531

Submitted on: Aug 31, 2021

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Accepted on: Nov 5, 2021

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Published on: Dec 22, 2021

Published by: Wroclaw University of Science and Technology

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

relining technology,

grouting process,

Related subjects:

Geosciences, other,

Materials sciences,

Porous materials,

Mechanics and fluid dynamics

© 2021 Zuzanna Fyall, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution 4.0 License.

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