1.School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China;
2.School of Civil and Architectural Engineering, East China University of Technology, Nanchang 330013, China
为探究石膏和石灰改良水泥-粉煤灰在冲击动载下的力学特性,采用了分离式霍普金森压杆(SHPB)对不同养护龄期和不同配合比下的改良水泥-粉煤灰试样进行冲击试验。研究了相同冲击荷载作用下试样的破坏特征和动态力学特性,并重点分析了动态抗压强度(DCS)与养护龄期和石膏、石灰掺量之间的关系。试验结果表明:随着试样龄期的增加,石膏改良水泥-粉煤灰的脆性逐渐增强,而石灰改良水泥-粉煤灰的试样总体偏延性;随着固化剂掺量的增加,石膏改良试样强度呈现出先增长后降低的趋势,掺量为6%时,DCS达到峰值,早期石灰改良试样强度表现为先上升后降低,而后期呈现出持续上升的趋势并在掺量为12%时,90 d DCS达到最大值14.36 MPa。
In order to study the dynamic mechanical properties of cement-fly ash stabilized by gypsum and lime under impact load,the device of SHPB was adopted to study the gypsum-cement-fly ash and lime-cement-fly ash samples under different curing time and mix proportion.The analysis was made on the failure characteristics and mechanical properties of the sample, meanwhile, the dynamic compressive strength (DCS) on different curing time and mix proportion was researched.The results show that the brittleness of gypsum-cement-fly ash increases with curing time.However, the malleability of lime-cement-fly ash increases with curing time; when the gypsum content arises, the DCS of stabilized cement-fly ash exhibits a trend of increasing first and then decreasing, the DCS reaches a peak with the gypsum content of 6%; when the lime content increases, the DCS of stabilized cement-fly ash first increases and then decreases in the early stage, but the DCS constantly increases in the later stage and reaches maximum value of 14.36 MPa(90 d) with lime content of 12%.
周盛全1,张勇飞1,徐颖1,李栋伟2. 冲击荷载作用下改良水泥-粉煤灰试样力学特性研究[J]. 振动与冲击, 2021, 40(2): 119-126.
ZHOU Shengquan1,ZHANG Yongfei1,XU Ying1,LI Dongwei2. Research on the dynamic mechanical properties of stabilized cement-fly ash samples. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(2): 119-126.
[1] 韦锋,马小莉,赵高文,等. 粉煤灰作为高填方回填料的试验研究[J]. 低温建筑技术,2015, 37(02):76-78.
WEI Feng, MA Xiao-li, ZHAO Gao-wen, et al. Experimental study of fly ash as high fill backfill [J]. Low Temperature Architecture Technology, 2015, 37(02): 76-78.
[2] ZHOU S Q, ZHANG Y F, ZHOU D W, et al. Fly ash foundation reinforced by cement-soil mixing piles[J]. DYNA - Ingeniería e Industria . 2020, 95(2):1-7.
[3] 周德泉,赵明华,肖宏宇. 沉积粉煤灰工程特性试验研究[J].铁道科学与工程学报,2011,8(03):25-29.
ZHOU De-quan, ZHAO Ming-hua, XIAO Hong-yu. Experimental study on behavior of deposition fly ash stratum [J]. Journal of Railway Science and Engineering, 2011, 8(03):25-29.
[4] 刘煜民,黄平,魏智勇,等. 从试桩看深层搅拌桩在粉煤灰地基中的应用[J]. 武汉大学学报(工学版),2007(S1):219-222.
LIU Yu-ming, HUANG Ping, WEI Zhi-yong. Application of deep mixing piles to fly ash foundation with pile experiments [J]. Engineering Journal of Wuhan University, 2007(S1):219-222.
[5] 刘振田,焦瑞玲. 采用深层搅拌桩加固公路粉煤灰地基技术[J]. 铁道标准设计,2006(01):27-28.
LIU Zhen-tian, JIAO Rui-ling. Research on highway fly ash foundation reinforced by deep mixing piles [J]. Railway Standard Design, 2006(01):27-28.
[6] 鹿群,郭少龙,王闵闵,等. 纤维水泥土力学性能的试验研究[J]. 岩土力学,2016, 37(S2):421-426.
LU Quan, GUO Shao-long, WANG Min-min. Experimental study of mechanical properties of fiber cement soil [J]. Rock and Soil Mechanics,2016,37(S2):421-426.
[7] KHIEM Q T, TOMOAKI S, HIROSHI T. Improvement of mechanical behavior of cemented soil reinforced with waste cornsilk fibers [J].Construction and Building Materials, 2018, 178(30):204-210.
[8] 倪涛,裴向军,范明明,等. SJP水泥改良土浆的基本物理性能试验研究[J]. 硅酸盐通报,2019,38(8):2637-2641.
NI Tao, PEI Xiang-jun FANG Ming-ming. Experimental Study on Basic Physical Properties of SJP Cement Improved Soil Slurry [J]. Bulletin of the Chinese Ceramic Society, 2019, 38(8):2637-2641.
[9] ASSKAR J C, Mostafa A S, SAMAN S K. Mechanical properties soil stabilized with nano calcium carbonate and reinforced with carpet waste fibers [J].Construction and Building Materials, 2019, 211(30):1094-1104.
[10] 连帅强,单俊鸿,李阳,等. 粉煤灰活性提升技术的研究进展[J].粉煤灰综合利用,2019(04):93-96.
LIAN Shuai-qiang, SHAN Jun-hong, LI Yang. Research Progress of Fly Ash Activation Enhancement Technology [J]. Fly Ash Comprehensive Utilization, 2019(04):93-96.
[11] 孙国文,汤青青,张丽娟,等. 大掺量粉煤灰早期活性激发及其作用机理[J].哈尔滨工程大学学报,2019,40(03):540-547.
SUN Guo-wen, TANG Qing-qing, ZHANG Li-juan, et al. Early activation effect and mechanism of high-volume fly ash [J]. Journal of Harbin Engineering University, 2019, 40(03):540-547.
[12] 李洁,张付奇,李刚,等. 生石灰对粉煤灰-石膏复合材料的改性研究[J].非金属矿,2016,39(5):52-54.
LI Jie, ZHANG Fu-qi, LI Gang, et al. The Study on Modification of Quicklime to Fly Ash-Gypsum Composites [J]. Non-Metallic Mines, 2016, 39(5):52-54.
[13] 杨敏,钱觉时. 石膏在粉煤灰-石灰-硫酸盐系统中的作用[J].粉煤灰综合利用,2007(05):47-49.
YANG Ming, QIAN Jue-shi. Effect of Gypsum in the Fly ash-Lime-Sulphate Systems [J]. Fly Ash Comprehensive Utilization, 2007(05):47-49.
[14]. 赵计辉,王栋民,惠飞,等. 不同激发剂对矸石电厂循环流化床粉煤灰的活化效果[J]. 非金属矿,2014,37(01):7-10.
ZHAO Ji-hui, WANG Dong-ming, HUI Fei, et al. Activation Effect of Activators on the Circulating Fluidized Bed Fly Ash from Gangue Power Plant [J]. Non-Metallic Mines, 2014, 37(01):7-10.
[15] RADIP N, PRABIR K S. Use of OPC to improve setting and early strength properties of low calcium fly ash geopolymer concrete cured at room temperature [J].Cement and Concrete Composites, 2015(55):205-214.
[16] MAHDI R, JAHANGIR M, MOHD R S, et al. Investigation of coal bottom ash and fly ash in concrete as replacement for sand and cement[J].Construction and Building Materials, 2016, 116(30):15-24.
[17] ZHOU S Q, ZHOU D W, ZHANG Y F, et al. Study on physical-mechanical properties and microstructure of expansive soil stabilized with fly ash and lime[J].Advances in civi Engineering, Vol, 2019 Article ID 4693757,15 page, 2019.
[18] 张超. 劣质低活性粉煤灰路用理论基础[J].长安大学学报(自然科学版),2004(03):13-16.
ZHANG Chao. Application principle in road base course for low-activity fly-ash [J]. Journal of Chang'an University (Natural Science Edition), 2004(03):13-16.
[19] POON CS, QIAO X C, LIN Z S. Effects of flue gas desulphurization sludge on the pozzolanic reaction of reject-fly-ash-blended cement pastes [J]. Cement and Concrete Research, 2004, 34(10):1907-1918.
[20] 王梦想,汪海波,宗琦. 煤矿泥岩冲击动态力学特性与破裂破碎特征分析[J].振动与冲击,2019,38(04):137-143.
WANG Meng-xiang, WANG Hai-bo, ZONG Qi. Analysis dynamic mechanical characteristics and fracture breaking characteristics of coal mine mudstone [J].Journal of Vibration and Shock, 2019, 38(04):137-143.
[21]. ZHOU S Q, ZHOU D W, ZHANG Y F, et al. Research on the dynamic mechanical properties and energy dissipation of expansive soil stabilized by fly ash and lime[J]. Advances in Materials Science and Engineering, vol. 2019, Article ID 5809657, 13 page, 2019.
[22] 陈艺顺,王波,周健南,等.冲击载荷作用下蒸压加气混凝土动态力学性能研究[J]. 振动与冲击,2019,38(18):201-206.
CHEN Yi-shun, WANG Bo, ZHOU Jian-nan, et al. Dynamic mechanical properties of AACs under impact loading [J]. Journal of Vibration and Shock, 2019, 38(18):201-206.
[23] FENG S W, ZHOU Y, WANG Y, et al. Experimental research on the dynamic mechanical properties and damage characteristics of lightweight foamed concrete under impact loading [J]. International Journal of Impact Engineering, 2020, 140, 103558.
[24] Chen Z T, Yang Y Z, Tao Y. Impact properties of engineered cementitious composites with high volume fly ash using SHPB test[J]. Journal of Wuhan University of Technology(Materials Science), vol. 27, 2012.
[25] Mohamed H M, Azrul A M, Roszilah H, et al. Dynamic properties of high volume fly ash nanosilica (NVFANS) concrete subjected to combined effect of high strain rate and temperature [J]. Latin American journal of solids and structures, 2018, 15(1).
[26] 李晓琴,陈前均,陈保淇,等. 混凝土SHPB试验端面摩擦效应研究[J]. 西安建筑科技大学学报(自然科学版), 2018, 50(02): 209-213+241.
LI Xiao-qin, CHEN Qian-jun, CHEN Bao-qi, et al. Study on concrete SHPB tests with interface friction effects [J]. Journal of Xi'an University of Architecture & Technology (Natural Science
Edition) 2018, 50(02):209-213+241.
[27] Xia K. W, Rousseau C. E, and Rosakis A. Experimental investigations of spontaneous bimaterial interfacial fractures[J]. Journal of Mechanics of Materials and Structures, 2008, 3(1): 173-184.
[28] Zhou Y. X, Xia K, Li X. B, et al. Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials[J]. International Journal of Rock Mechanics and Mining Sciences, 2012, 49: 105-112.
[29] 宋力,胡时胜. SHPB数据处理中的二波法与三波法[J].爆炸与冲击,2005(04):368-373.
SONG Li, HU Shi-sheng. Two-wave and three-wave method in SHPB data processing [J]. Explosion and Shock Waves, 2005(04):368-373.
[30] 马冬冬. 动静组合加载下人工冻土动态力学特性及本构模型研究[D]. 淮南, 安徽理工大学,2018.
MA Dongdong. Study on Dynamic Mechanical Property and Constitutive Model of Artificial Frozen Soil under Coupled Static and dynamic load [D]. Huainan, Anhui University of science and technology , 2018.
[31] 平琦,吴明静,袁璞,等. 冲击载荷作用下高温砂岩动态力学性能试验研究[J]. 岩石力学与工程学报,2019,38(04):782-792.
PING Qi, WU Ming-jing, YUAN Pu, et al. Experimental study on dynamic mechanical properties of high temperature sandstone under impact loads [J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38(04):782-792.
[32] 伍勇华,胡宇博,南峰,等. 粉煤灰对碱激发矿渣胶凝材料耐盐酸腐蚀性能的影响[J]. 硅酸盐通报,2019,38(04):1166-1170+1176.
WU Yong-hua, HU Yu-bo, NAN Feng, et al. Effect of Fly Ash on Hydrochloric Acid Corrosion Resistance of Alkali-Activated Slag Cementitious Materials[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(04):1166-1170+1176.
[33] 杨爱武,肖敏,周玉明.石灰粉煤灰固化天津滨海软土试验研究[J]. 地下空间与工程学报,2019,15(01):60-67.
YANG Ai-wu, XIAO Min, ZHOU Yu-ming. Experimental study on lime-fly ash to cure Tianjin marine soft soil[J]. Chinese Journal of Underground Space and Engineering, 2019,15(01):60-67.
[34] Cristiana N, Petra M, Dita F, et al. Influence of linseed oil on the microstructure and composition of lime and lime-metakaolin pastes after a long curing time [J]. Construction and Building Materials, 2018, 189: 787-796.