Freeze-Thaw Damage and Life Prediction Model ofNatural Pumice Concrete

Abstract

Abstract: Inner Mongolia is rich in natural pumice,which can be used as coarse aggregate of lightweight aggregate concrete.In order to study the freeze-thaw damage law of natural pumice concrete (NPC),the freeze-thaw test was carried out on specimens with five kinds of mixing ratios.The relative dynamic elastic modulus and mass loss of NPC were obtained,and then the influence of pumice aggregate on the concrete frost resistance was analyzed.Based on the hydrostatic pressure theory and the fatigue damage theory,the material coefficient of NPC was deduced,the freeze-thaw damage model and life prediction model of NPC were established,and as an example,the life of NPC in Bayannur,Inner Mongolia in winter was calculated.The results show that pumice aggregate reduces the hydrostatic pressure of concrete and improves its frost resistance.The calculated value of relative dynamic modulus of the NPC is in great agreement with the test value.The life expectancy values of five groups of NPC reach 65 a,84 a,112 a,131 a and 50 a,meeting the safety operation life.

Key words: natural pumice concrete, freeze-thaw damage, relative dynamic elastic modulu, life prediction

CLC Number:

TU528.2

WANG Xiaoxiao, LIU Chang, YIN Liqiang, YAN Changwang, LIU Shuguang. Freeze-Thaw Damage and Life Prediction Model ofNatural Pumice Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(1): 98-105.

References

[1] HASSANPOUR M,SHAFIGH P,MAHMUD H B.Lightweight aggregate concrete fiber reinforcement:a review[J].Construction and Building Materials,2012,37:452-461.
[2] RASHAD A M.A short manual on natural pumice as a lightweight aggregate[J].Journal of Building Engineering,2019,25:100802.
[3] 王海龙.轻骨料混凝土早期力学性能与抗冻性能的试验研究[D].呼和浩特:内蒙古农业大学,2009.
WANG H L.The study on early mechanics and frost resistance of lightweight aggregate concrete[D].Hohhot:Inner Mongolia Agricultural University,2009 (in Chinese).
[4] HOSSAIN K M A.Properties of volcanic ash and pumice concrete[J].IABSE Report,1990,80:145-150.
[5] HOSSAIN K M A.Blended cement using volcanic ash and pumice[J].Cement and Concrete Research,2003,33(10):1601-1605.
[6] HOSSAIN K M A,LACHEMI M.Development of volcanic ash concrete:strength,durability,and microstructural investigations[J].ACI Materials Journal,2006,103(1):11-17.
[7] LIU K H,YAN J C,ALAM M S,et al.Seismic fragility analysis of deteriorating recycled aggregate concrete bridge columns subjected to freeze-thaw cycles[J].Engineering Structures,2019,187:1-15.
[8] 王海龙,申向东,王萧萧.碳纤维改善浮石混凝土力学特性的试验研究[J].建筑材料学报,2013,16(2):232-236.
WANG H L,SHEN X D,WANG X X.Study of carbon fiber improved pumice concrete mechanical properties[J].Journal of Building Materials,2013,16(2):232-236 (in Chinese).
[9] DONG W,SHEN X D,XUE H J,et al.Research on the freeze-thaw cyclic test and damage model of Aeolian sand lightweight aggregate concrete[J].Construction and Building Materials,2016,123:792-799.
[10] 王萧萧,申向东,王海龙,等.天然浮石混凝土孔溶液结冰规律的研究[J].材料导报,2017,31(6):130-135.
WANG X X,SHEN X D,WANG H L,et al.Research on icing law of pore solution in natural pumice concrete[J].Materials Review,2017,31(6):130-135 (in Chinese).
[11] 洪锦祥,缪昌文,刘加平,等.冻融损伤混凝土力学性能衰减规律[J].建筑材料学报,2012,15(2):173-178.
HONG J X,MIAO C W,LIU J P,et al.Degradation law of mechanical properties of concrete subjected to freeze-thaw cycles[J].Journal of Building Materials,2012,15(2):173-178 (in Chinese).
[12] POLAT R,DEMIRBOGA R,KARAKOC M B,et al.The influence of lightweight aggregate on the physico-mechanical properties of concrete exposed to freeze-thaw cycles[J].Cold Regions Science and Technology,2010,60(1):51-56.
[13] 严佳川,邹超英.冻融循环作用下混凝土材料寿命评估方法[J].哈尔滨工业大学学报,2011,43(6):11-15.
YAN J C,ZOU C Y.Evaluation method for the service life of concrete under the freeze-thaw action[J].Journal of Harbin Institute of Technology,2011,43(6):11-15 (in Chinese).
[14] 李金玉,彭小平,邓正刚,等.混凝土抗冻性的定量化设计[J].混凝土,2000(12):61-65.
LI J Y,PENG X P,DENG Z G,et al.Quantitative design on the frost-resistance of concrete[J].Concrete,2000(12):61-65 (in Chinese).
[15] 董伟,申向东,赵占彪,等.风积沙轻骨料混凝土冻融损伤及寿命预测研究[J].冰川冻土,2015,37(4):1009-1015.
DONG W,SHEN X D,ZHAO Z B,et al.Study of the freezing-thawing damage and life prediction of aeolian lightweight aggregate concrete[J].Journal of Glaciology and Geocryology,2015,37(4):1009-1015 (in Chinese).
[16] WANG X X,WU Y,SHEN X D,et al.An experimental study of a freeze-thaw damage model of natural pumice concrete[J].Powder Technology,2018,339:651-658.
[17] HARIYADI,TAMAI H.Enhancing the performance of porous concrete by utilizing the pumice aggregate[J].Procedia Engineering,2015,125:732-738.
[18] 中华人民共和国住房和城乡建设部.普通混凝土长期性能和耐久性能试验方法标准:GB/T 50082—2009[S].北京:中国建筑工业出版社,2009.
Ministry of Housing and Urban Rural Development of the People’s Republic of China.Standard for test methods of long term performance and durability of ordinary concrete:GB/T 50082—2009[S].Beijing:China Construction Industry Press,2009 (in Chinese).
[19] POWERS T C.A working hypothesis for further studies of frost resistance of concrete[J].ACI Journal Proceedings,1945,41(1):245-272.
[20] POWERS T C.The air requirement of frost-resistance concrete[J].Proceedings of Highway Research Board,1949,29:184-202.
[21] 蔡昊.混凝土抗冻耐久性预测模型[D].北京:清华大学,1998.
CAI H.Prediction model of concrete frost resistance durability[D].Beijing:Tsinghua University,1998 (in Chinese).
[22] 段安.受冻融混凝土本构关系研究和冻融过程数值模拟[D].北京:清华大学,2009.
DUAN A.Research on constitutive relationship of frozen-thawed concrete and mathematical modeling of freeze-thaw process[D].Beijing:Tsinghua University,2009 (in Chinese).
[23] AAS-JAKOBSEN K,Fatigue of Concrete Beams and Columns[M].Trondheim:Institute for Betonkonstruksjoner,1970:148.
[24] CASTILLO E,FERNÁNDEZ-CANTELI A.A general regression model for lifetime evaluation and prediction[J].International Journal of Fracture,2001,107(2):117-137.