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浙江大学学报(工学版)
JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE)
    
Coupling of hygro-thermal field in early-age concrete based on cement hydration
DU Ming-yue, TIAN Ye, JIN Nan-guo, WANG Yu-wei, JIN Xian-yu
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
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Abstract  
In order to analyze the coupling effect of temperature and humidity fields in early-age concrete, a microstructure model of cement hydration incorporating fly ash based on Krstulovi-Dabi hydration kinetics formulas was proposed. In considering the hydration heat release and water consumption during the hardening process, as well as the influence of porosity on moisture diffusion coefficient,a coupled hygro-thermal model of early-age concrete was established, and verified through an experiment. The research results indicates that the coupled hygro-thermal model constructed based on the micro-structure information of cement hydration can accurately predict the time-dependent development of temperature and humidity field inside the early-age concrete. The research can theoretically support the investigation on the deformation and cracking of the early-age concrete.

Published: 01 August 2015
CLC:  TU 528.1  
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Cite this article:

DU Ming-yue, TIAN Ye, JIN Nan-guo, WANG Yu-wei, JIN Xian-yu. Coupling of hygro-thermal field in early-age concrete based on cement hydration. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2015, 49(8): 1410-1416.

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http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2015.08.002     OR     http://www.zjujournals.com/eng/Y2015/V49/I8/1410


基于水泥水化的早龄期混凝土温湿耦合

为了分析早龄期混凝土温湿度场耦合效应,基于Krstulovi-Dabi水化反应动力学方程式建立掺粉煤灰的水泥水化微观结构模型；考虑混凝土硬化过程中的水化放热及水分消耗作用,以及孔隙率对湿度扩散系数的影响,构建早龄期混凝土温湿度耦合作用模型,并通过已有试验数据对模型进行验证.研究表明基于水泥水化微观信息的混凝土温湿度场耦合作用模型可以较好地预测早龄期混凝土内部的温湿度场时变发展规律,研究成果可为早龄期混凝土变形及开裂的研究提供理论支持.

［1］ SONG H W, KWON S J. Permeability characteristics of carbonated concrete considering capillary pore structure ［J］. Cement and Concrete Research, 2007, 376: 909-915.
［2］ HAN S H. Influence of diffusion coefficient on chloride ion penetration of concrete structure ［J］. Construction and Building Materials, 2007, 212: 370-378.
［3］ SMILAUER V, KREJCI T. Multiscale model for tempe-rature distribution in hydrating concrete ［J］. International Journal for Multiscale Computational Engineering, 2009, 72:
135-151.
［4］ MAEKAWA K, ISHIDA T, KISHI T. Multi-scale modeling of concrete performance［J］. Journal of Advanced Concrete Technology, 2003（12): 91-126.
［5］ KLEMCZAK B. Prediction of coupled heat and moisture transfer in early-age massive concrete structures ［J］. Numerical Heat Transfer Part A:Applications, 2011, 60(3):
212-233.
［6］ CERVERA M, OLIVER J, PRATO T. Thermo-chemo-mechanical model for concrete. I: Hydration and aging［J］. Journal of Engineering Mechanics, 1999(1259): 1018-1027.
［7］ GAWIN D, PESAVENTO F, SCHREFLER B A. Hygro-thermo-chemo-mechanical modeling of concrete at early ages and beyond. Part I: hydration and hygro-thermal phenomena ［J］. International Journal for Numerical Methods in Engineering, 2006(673): 299-331.
［8］ TIAN Y, JIN X Y, JIN N G. Thermal cracking analysis of concrete with cement hydration model and equivalent age method［J］. Computers and Concrete, 2013(114): 271-289.
［9］ PARK K B, TAKAFUMI N, PLAWSKY J. Modeling of hydration reactions using neural networks to predict the average properties of cement pastes ［J］. Cement and Concrete Research, 2005, 35(9): 1676-1684.
［10］ 田野.复掺矿物掺合料混凝土性能及抗裂机理、微观特性研究［D］.杭州: 浙江大学, 2007.
TIAN Ye. Investigation on the performance, cracking mechanism and micro-properties of concrete incorporated with mineral admixtures ［D］. Hangzhou: Zhejiang University, 2007.
［11］ BENTZ D P, GABOCZI E J. Percolation of phases in a three-dimensional cement paste microstructural model ［J］. Cement and Concrete Research, 1991,21: 325-344.
［12］ 王宇纬.掺矿物掺合料水泥水化模型及其应用研究［D］.杭州：浙江大学，2014.
WANG Yu-wei. Study of hydration model of cement with mineral admixtures and its application［D］. Hangzhou: Zhejiang University, 2014.
［13］ DABI P, KRSTULOVI R. A new approach in mathe-matical modeling of cement hydration development ［J］. Cement and Concrete Research, 2000, 30: 1017-1021.
［14］ WANG X Y, LEE H S, PARK K B. Simulation of low-calcium fly ash blended cement hydration［J］. ACI Material Jounal, 2009(1062): 167-175.
［15］ ZENG Q, LI K F, FEN C T, et al. Determination of cement hydration and pozzolanic reaction extents for fly-ash cement pastes ［J］. Construction and Building Materials, 2012(271): 560569.
［16］ DI LUZIO G, CUSATIS G. Hygro-thermo-chemical mod-eling of high performance concrete. I: Theory ［J］. Cement and Concrete Composites, 2009(315): 301-308.
［17］ SCHINDLER A K, FOLLIARD K J. Heat of hydration models for cementitious materials ［J］. ACI Materials Journal, 2005(1021): 2433.
［18］ 侯东伟.混凝土自身与干燥收缩一体化及相关问题研究［D］. 北京:清华大学,2010.
HOU Dong-wei. Integrative studies on autogenous and drying shrinkage of concrete and related issues ［D］.Beijing: Tsinghua University, 2010.
［19］ GRASLEY Z C, LANG D A, D’AMBROSIA M D, et al. Relative humidity in concrete ［J］. Concrete international, 2006, 28(10): 51-57.
［20］  BAANT Z P, NAJJAR L J. Nonlinear water diffusion in nonsaturated concrete ［J］. Matériaux et Construction, 1972(51): 320.
［21］ BAANT Z P, THONGUTHAI W. Pore pressure and drying of concrete at high temperature ［J］. Journal of Engineering Mechanics Division, ASCE, (104EM5)：1978, 1095-1079.
［22］ OH B H, CHA S W. Nonlinear analysis of temperature and moisture distributions in early-age concrete structures based on degree of hydration ［J］. ACI Materials Journal,2003(1005): 361-370.
［23］ HANEHARA S, TOMOSAWA F, KOBAYAKAWAA M, et al. Effects of water/powder ratio, mixing ratio of fly ash, and curing temperature on pozzolanic reaction of fly ash in cement paste ［J］. Cement and Concrete Research, 2001(311): 31-39.
［24］ WONG S F, WEE T H, SWADDIWUDHIPONG S, et al. Study of water movement in concrete ［J］. Magazine of Concrete Research, 2001(533): 205-220.
［25］ KANG S T, KIM J S, LEE Y, et al. Moisture diffusivity of early age concrete considering temperature and porosity ［J］. KSCE Journal of Civil Engineering, 2012(161): 179-188.
［26］ ZHANG J, HOU D W, HAN Y D. Micromechanical modeling on autogenous and drying shrinkages of concrete ［J］. Construction and Building Materials, 2012(293): 230-240.
［27］ ZHANG J, HOU D W, GAO Y, et al. Determination of moisture diffusion coefficient of concrete at early-age from interior humidity measurements［J］. Drying Technology, 2011(296): 689-696.
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