Effect of Early Age Strength on Cracking in Mass Concrete Containing Different Supplementary Cementitious Materials: Experimental and Finite-Element Investigation

Lawrence, Adrian M.; Tia, M Linder; Ferraro, Christopher C.; Bergin, Michael

doi:10.1061/(asce)mt.1943-5533.0000389

Cited by 55 publications

(28 citation statements)

References 5 publications

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“…During the analysis, each element is treated individually for its heat generation [Eq. (8)] and thermal properties [Eqs. (9) and (10)] based on its degree of hydration [Eq.…”

Section: Analysis and Resultsmentioning

confidence: 99%

“…On the other hand, Wu et al [7] created a heat transfer model for concrete using ANSYS with surface convection that could realistically model the surface heat loss to the surrounding environment. Lawrence et al [8] were able to evaluate bridge footings with wooden formwork using TNO Diana software; they considered changes in material properties and thermal loading function based on the degree of hydration of concrete while using a thermal convection model to account for surface heat loss.…”

Section: Introductionmentioning

confidence: 99%

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Thermal analysis and adiabatic calorimetry for early-age concrete members

Lin

Chen

2015

J Therm Anal Calorim

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This paper describes a procedure for thermal analysis on early-age concrete structures with experimentally obtained concrete adiabatic temperature rise and interface conductance between steel formwork and concrete. During hydration, concrete is considered in the analysis as non-homogeneous and the degree of hydration is dependent on both thermal loading and thermal properties development. A thermal convection model was implemented to simulate the external heat loss. Experimentally, two 1.2-m concrete cubes were constructed with embedded temperature sensors. The measured temperature time histories correlate well with the calculated values using a finite element model developed for this study. The modeling method and the experimental procedures developed are able to accurately predict the temperature evolution within an early-age concrete structure.

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“…During the analysis, each element is treated individually for its heat generation [Eq. (8)] and thermal properties [Eqs. (9) and (10)] based on its degree of hydration [Eq.…”

Section: Analysis and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal analysis and adiabatic calorimetry for early-age concrete members

Lin

Chen

2015

J Therm Anal Calorim

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“…Based on a review of the literature, different sizes of concrete specimens were cast and cured semi-adiabatically to simulate the mass concrete curing conditions, for example, 0·027 m 3 (Kim et al, 2011), 0·1 m 3 (Azenha et al, 2009) to 1 m 3 (Lawrence et al, 2012). In order to investigate the effect of concrete specimen size on the heat development in concrete, a larger concrete slab specimen, 660 Â 460 Â 300 mm, was cast and tested inside an environmental chamber (Figure 7).…”

Section: Semi-adiabatic Calorimetry Testmentioning

confidence: 99%

“…Da Silva et al (2015) successfully predicted the peak hydration temperature in a 1050 m 3 concrete foundation based on temperature data obtained in a 1 m 3 concrete cube specimen under a semi-adiabatic curing condition. The volumes of the specimens used for semiadiabatic calorimetry tests vary significantly from project to project, for example, 0·027 m 3 (Kim et al, 2011), 0·1 m 3 (Azenha et al, 2009) and 1 m 3 (Lawrence et al, 2012). The effects of specimen sizes on concrete heat development, however, have not been sufficiently investigated based on a review of the literature.…”

Section: Introductionmentioning

confidence: 99%

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Early-age heat development in GGBS concrete structures

Tang¹,

Millard²,

Beattie³

2015

Proceedings of the Institution of Civil Engineers - Structures

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2 3China accounts for approximately half of global steel production and more than 80 Mt of blast-furnace slag is generated every year as a by-product. About 80% of blast-furnace slag is recycled in China and the majority of this is used as an additive in low-grade composite cement or 'blast-furnace cement'. This paper discusses the technical feasibility of using ground granulated blast-furnace slag (GGBS) in structural concrete for high-value applications in China. The effects of the slag on concrete compressive strengths are investigated experimentally at different curing temperatures. The influence of partial replacement of CEM I with GGBS on the heat development of concrete is investigated through isothermal calorimetry tests. The presence of slag contributes to a reduced heat output rate. The results obtained from the isothermal calorimetry tests are also used to simulate the heat liberation process in suspended concrete slabs using finite-element software. Finite-element modelling results, validated by semi-adiabatic calorimetry tests, indicate that partial replacement of CEM I cement with GGBS contributes to a reduced peak hydration temperature and this has a beneficial effect in hot-weather concreting.

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