Effects of Curing Conditions on Hydration Behavior and Pore Structure of EVA Emulsion Modified Cement Paste

Abstract

Abstract: In this paper, the polymer modified Portland cement paste with different EVA emulsion content was prepared. The hydration properties and pore structure of the modified Portland cement paste under the same water cement ratio and different curing systems (standard curing and steam curing) were compared. The effects of EVA emulsion on the hydration products, hydration characteristics, pore structure and compressive strength of the cement under different curing conditions were evaluated by X ray diffraction analysis, hydration heat analysis, mercury intrusion analysis, nitrogen adsorption test and cube compressive strength test. The results show that compared with the standard curing, EVA emulsion does not change the hydration products of cement under the steam curing. When the amount of EVA emulsion is higher, it decreases the degree of cement hydration, reduces the porosity of samples, increases the pore size of samples, and the steam curing decreases the negative effect of EVA emulsion on the strength of the cement paste.

Key words: EVA emulsion, steam curing, mercury intrusion analysis, hydration behavior, pore structure

CLC Number:

TQ172

DING Shaopei, WANG Jiantao, LIU Yunpeng, HE Yongjia. Effects of Curing Conditions on Hydration Behavior and Pore Structure of EVA Emulsion Modified Cement Paste[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(7): 2145-2151.

References

[1] 彭波,丁庆军,王红喜,等.水泥与混凝土制品的蒸汽养护生产关键技术进展[J].国外建材科技,2007,28(3):21-24.
PENG B, DING Q J, WANG H X, et al. Advances in key technology of steam-cured cement and concrete products[J]. Science and Technology of Overseas Building Materials, 2007, 28(3): 21-24 (in Chinese).
[2] ESCALANTE-GARCÍA J I, SHARP J H. The microstructure and mechanical properties of blended cements hydrated at various temperatures[J]. Cement and Concrete Research, 2001, 31(5): 695-702.
[3] NIE S, ZHANG W Q, HU S G, et al. Improving the fluid transport properties of heat-cured concrete by internal curing[J]. Construction and Building Materials, 2018, 168: 522-531.
[4] 耿健,彭波,孙家瑛.蒸汽养护制度对水泥石孔结构的影响[J].建筑材料学报,2011,14(1):116-118+123.
GENG J, PENG B, SUN J Y. Effect of steam curing system on pore structure of cement paste[J]. Journal of Building Materials, 2011, 14(1): 116-118+123 (in Chinese).
[5] MUHAMMAD N Z, KEYVANFAR A, ABD MAJID M Z, et al. Waterproof performance of concrete: a critical review on implemented approaches[J]. Construction and Building Materials, 2015, 101: 80-90.
[6] YANG Z X, SHI X M, CREIGHTON A T, et al. Effect of styrene-butadiene rubber latex on the chloride permeability and microstructure of Portland cement mortar[J]. Construction and Building Materials, 2009, 23(6): 2283-2290.
[7] WANG R, MA D X, WANG P M, et al. Study on waterproof mechanism of polymer-modified cement mortar [J]. Magazine of Concrete Research, 2015, 67(18): 1-8.
[8] RAMLI M, TABASSI A A, HOE K W. Porosity, pore structure and water absorption of polymer-modified mortars: an experimental study under different curing conditions[J]. Composites Part B: Engineering, 2013, 55: 221-233.
[9] ZHANG C Y, KONG X M, LU Z C, et al. Pore structure of hardened cement paste containing colloidal polymers with varied glass transition temperature and surface charges[J]. Cement and Concrete Composites, 2019, 95: 154-168.
[10] YUAN B, YANG Y G, WANG Y Q, et al. Self-healing efficiency of EVA-modified cement for hydraulic fracturing wells[J]. Construction and Building Materials, 2017, 146: 563-570.
[11] SILVA D A, JOHN V M, RIBEIRO J L D, et al. Pore size distribution of hydrated cement pastes modified with polymers[J]. Cement and Concrete Research, 2001, 31(8): 1177-1184.
[12] REINHARDT H W, STEGMAIER M. Influence of heat curing on the pore structure and compressive strength of self-compacting concrete (SCC)[J]. Cement and Concrete Research, 2006, 36(5): 879-885.

[1]	CHEN Mengzhu, YU Linwen, YUAN Huihui, ZHENG Haibing, WU Fang, CAI Yuxin, LI Weihua. Effect of Ca-LDH Modified by Sodium Lignosulfonate on Properties of Cement-Based Materials [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(7): 2152-2158.
[2]	ZHANG Chao, DENG Zhicong, WANG Zhibin, HOU Zeyu, JIA Zijian, WANG Xianggang, JIA Lutao, CHEN Chun, SUN Zhengming, ZHANG Yamei, PAN Jinlong. Effects of Fibers on Printing Performance and Mechanical Properties of 3D Printing Concrete [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(6): 1870-1878.
[3]	WANG Dongli, YANG Ce, PAN Huimin, LI Tong, CHI Yaao, XU Zehua. Research Progress on Relationship Between Pore Structure and Water Absorption Performance of Cement-Based Materials [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(5): 1420-1428.
[4]	CHEN Zhiwu. Influences of Saturated Surface-Dry Recycled Fine Aggregate on Fluidity and Strength of Ultra-High Performance Concrete [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(5): 1503-1509.
[5]	CHEN Yiming, LIN Peitong, LI Yunlong, LIU Jinhong, WANG Junfeng, LU Liulei. Preparation of High Corrosion Resistant Cementitious Materials and Its Sulfate Resistance [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(4): 1116-1127.
[6]	SUN Ming, SUN Congtao, ZHANG Peng, MA Fubin, LI Yantao, DUAN Jizhou. Effects of Chloride Introduced Way and Metakaolin on Chloride Binding Capacity of Mortar [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(4): 1154-1161.
[7]	HUANG An, LI Beixing, YANG Jianbo, WANG Lijing. Effect of Steam Curing System on Strength and Impermeability of Precast Bridge Deck Concrete [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(4): 1170-1177.
[8]	LIN Peitong, ZENG Yu, ZHAO Yonggang, LIU Jinhong, WANG Junfeng, LU Liulei. Property and Pore Structure of Nano-SiO₂ Modified High Volume Slag Powder-Cement Cementitious System [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 384-391.
[9]	GAO Yuxin, LI Kunjie, MA Jianfeng, GAO Da, YANG Wen, BI Yao, LUO Yaoling. Influence of Municipal Sludge Dosage on Performance of Coal Gasification Slag Ceramsite [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 579-586.
[10]	TAN Hongbo, LYU Zhouling, MA Baoguo, JI Xiaoli, LIU Xiaohai, JIAN Shouwei. Preparation and Properties of Foamed Ceramicsfrom Turmeric Residue [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 597-604.
[11]	SONG Yang, LI Jinyuan, LI Junfeng, CHEN Wang, WU Haiyang. Characterization of Gas Permeability of Hardened Cement Paste [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2020, 39(12): 3799-3805.
[12]	LIANG Ke-xin;WANG Qi-cai;ZHANG Kai;ZHANG Rong-ling;CUI Xiao-ning;WANG Bing-zhong. Effect of Pore Structure of Air-entrained Concrete on Strength and Impermeability at Low Temperature(3 ℃)Condition [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2018, 37(4): 1309-1314.
[13]	LIANG Ke-xin;WANG Qi-cai;ZHANG Kai;ZHANG Rong-ling;CUI Xiao-ning;LI Jin-qian. Effects of Different Water-binder Ratio on Pore Structure Parameters and Impermeability of Air-entraining Concrete at Low Temperature(3 ℃) [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2018, 37(3): 749-754.
[14]	CAO Tian-lu;ZOU Ding-hua;FENG Chun-hua;LI Kun. Application of Relaxation Time of 1H in Cement Based Materials Research [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2018, 37(3): 888-893.
[15]	SUN Jing;LIU Hong-bo;LI Xue-ming. Effect of Foam Content on Foamed Concrete Pore Structure and Pb2+ Adsorption [J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2018, 37(2): 476-482.