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Jiranuwat Banjongrat. Prediction of cracking in mass concrete due to heat of hydration and shrinkage. Master's Degree(Engineering Technology). Thammasat University. Thammasat University Library. : Thammasat University, 2014.
Prediction of cracking in mass concrete due to heat of hydration and shrinkage
Name: Jiranuwat Banjongrat
keyword:
Mass concrete
Abstract:
The aim of this study is to simulate restrained strain of mass concrete at early age due to combined thermal effect and shrinkages. Firstly, restrained strain caused by differential thermal expansion as well as restrained strains caused by shrinkages are separately computed. Thermal properties such as specific heat, thermal conductivity and thermal expansion coefficient of concrete are estimated by the mathematical models developed by CONTEC. The previously proposed adiabatic temperature rise model is used to calculate heat of hydration. Heat of hydration obtained from the modified adiabatic temperature rise model and thermal properties derived from the proposed models are used as the input in a commercialized three-dimensional finite element program to calculate semi-adiabatic temperature and restrained strain. The restrained strains caused by shrinkages are computed based on an existing mathematical models for estimating free shrinkages. Both autogenous and drying shrinkages are considered. The total restrained strain is subsequently computed by the supercomposition concept. From the analytical result which considered thermal expansion and autogenous shrinkage effect, it is found that autogenous shrinkage reduces the thermal cracking risk at early age during the insulation curing period. From the analytical result which considered thermal expansion and total shrinkage effect, drying shrinkage increases the risk of cracking on the exposed surface while after removal of insulation curing material
Thammasat University. Thammasat University Library
Address:
BANGKOK
Email:
preserv@tu.ac.th
Name: Warangkana Saengsoy
Role:
advisor
Created:
2014
Modified:
2022-01-31
Issued:
2022-01-31
วิทยานิพนธ์/Thesis
application/pdf
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Engineering Technology
Grantor: Thammasat University
©copyrights Thammasat University
RightsAccess:
ใช้เวลา
0.033682 วินาที
Jiranuwat Banjongrat
| Title | Contributor | Type |
|---|---|---|
| Prediction of cracking in mass concrete due to heat of hydration and shrinkage
มหาวิทยาลัยธรรมศาสตร์ Jiranuwat Banjongrat | Warangkana Saengsoy | วิทยานิพนธ์/Thesis |
Warangkana Saengsoy