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[1]程子扬,李敬芳,陈旭勇,等.骨料含水量的差异对于粉煤灰再生混凝土性能的影响[J].武汉工程大学学报,2021,43(05):534-538.[doi:10.19843/j.cnki.CN42-1779/TQ. 202103018]
 CHENG Ziyang,LI Jingfang,CHEN Xuyong,et al.Influence of Water Content of Aggregate on Properties of Fly Ash Recycled Concrete[J].Journal of Wuhan Institute of Technology,2021,43(05):534-538.[doi:10.19843/j.cnki.CN42-1779/TQ. 202103018]
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骨料含水量的差异对于粉煤灰再生混凝土性能的影响(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
43
期数:
2021年05期
页码:
534-538
栏目:
资源与环境工程
出版日期:
2021-10-31

文章信息/Info

Title:
Influence of Water Content of Aggregate on Properties of Fly Ash Recycled Concrete
文章编号:
1674 - 2869(2021)05 - 0534 - 05
作者:
程子扬1李敬芳2陈旭勇1程书凯1徐 雄1田 野1屠艳平*1
1. 武汉工程大学土木工程与建筑学院,湖北 武汉 430074;2. 国投新疆罗布泊钾盐有限责任公司,新疆 哈密 839000
Author(s):
CHENG Ziyang1LI Jingfang2 CHEN Xuyong1CHENG Shukai1 XU Xiong1 TIAN Ye1 TU Yanping*1
1. School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China;2. State Development Investment Xinjiang Lop Nur Potash Corporation, Hami 839000, China
关键词:
粉煤灰再生混凝土再生粗骨料含水量坍落度力学性能
Keywords:
fly ashrecycled concrete recycled coarse aggregate water content slump mechanical property
分类号:
TU528
DOI:
10.19843/j.cnki.CN42-1779/TQ. 202103018
文献标志码:
A
摘要:
采用静水天平研究再生粗骨料的吸水情况,然后分别使用3种不同含水量(相较于饱和吸水量的0%、50%、100%)的再生粗骨料来制备再生混凝土,研究其坍落度、抗压强度和拉压比的变化。结果发现:再生粗骨料在前5 min其吸水速率较快,20 s就已经达到了饱和吸水量的21.2%,5 min时达到了48.9%;再生粗骨料的含水量为0%时,其坍落度最大,并且其拉压比最大,表明抗裂性能和延性最好;相对于另外2个含水量,含水量为50%的再生粗骨料的制备的再生混凝土的抗压强度和劈裂抗拉强度最大,拉压比仅次于含水量为0%的再生粗骨料。综合实验结果,当再生粗骨料的吸水量为50%时,相较于其他含水量,其制备的粉煤灰再生混凝土性能最优。
Abstract:
Hydrostatic balance was used to study the water absorption of reclaimed coarse aggregate, and then three kinds of recycled coarse aggregate with different water content (0%, 50% and 100% of saturated water absorption) were respectively used to prepare recycled concrete. The changes of slump, compressive strength and tension-compression ratio were studied. The results showed that the water absorption rate of recycled coarse aggregate is fast in the first 5 min, and reaches 21.2% of saturated water absorption at 5 min. When the water content of recycled coarse aggregate is 0%, its slump and tension-pressure ratio are the largest, which indicates that the crack resistance and ductility are best. The recycled coarse aggregate with 50% water content has the highest compressive strength and splitting tensile strength of recycled concrete, and its tension-compression ratio is slightly smaller than that of recycled coarse aggregate with 0% water content. The comprehensive experimental results show that when the water absorption of recycled coarse aggregate is 50%, compared with other water content, the performance of fly ash recycled concrete prepared is best.

参考文献/References:

[1] SHABAN W M, YANG J, SU H L, et al. Quality improvement techniques for recycled concrete aggregate: a review [J]. Journal of Advanced Concrete Technology, 2019, 17(4):151-167.[2] 应敬伟,蒙秋江,肖建庄.再生骨料CO2强化及其对混凝土抗压强度的影响[J].建筑材料学报,2017, 20(2):277-282.[3] SARAVANAKUMAR P, ABHIRAM K, MANOJ B. Properties of treated recycled aggregates and its influence on concrete strength characteristics[J]. Construction and Building Materials, 2016, 111(15):611-617.[4] 朋改非,黄艳竹,张九峰.骨料缺陷对再生混凝土力学性能的影响[J]. 建筑材料学报, 2012, 15(1):80-84.[5] 罗素蓉,叶世昌,黄海生.再生混凝土早龄期拉伸徐变试验研究[J]. 建筑材料学报, 2018, 21(2):228-234.[6] 边晓亚,程宇熙.低掺量水泥固化海泥的强度与应变特性研究[J].武汉工程大学学报,2021,43(1):76-80.[7] KIM Y, HANIF A, KAZMI S M S, et al. Properties enhancement of recycled aggregate concrete through pretreatment of coarse aggregates-comparative assessment of assorted techniques[J]. Journal of Cleaner Production, 2018, 191(1):339-349.[8] 孙道胜,李泽英,刘开伟,等.再生粗骨料的形态及缺陷对再生混凝土干燥收缩和力学性能的影响[J].材料导报,2021,35(11):11027-11033,11056. [9] 周梅,赵华民,路其林,等. 自燃煤矸石集料预处理对混凝土工作性及强度影响[J]. 工业建筑, 2014, 44(12): 113-117.[10] MEFTEH H, KEBA?LI O, OUCIEF H, et al. Influence of moisture conditioning of recycled aggregates on the properties of fresh and hardened concrete[J]. Journal of Cleaner Production, 2013, 54(1):282-288.[11] POON C S, SHUI Z H, LAM L, et al. Influence of moisture states of natural and recycled aggregates on the slump and compressive strength of concrete[J]. Cement and Concrete Research, 2004, 34(1):31-36.[12] FERREIRA L, DE BRITO J, BARRA M. Influence of the pre-saturation of recycled coarse concrete aggregates on concrete properties[J]. Magazine of Concrete Research, 2011, 63(8): 617-627.[13] BRAND A S, ROESLE J R, SALAS A. Initial moisture and mixing effects on higher quality recycled coarse aggregate concrete[J]. Construction and Building Materials, 2015, 79(15):83-89. [14] OLIVEIRE DE BAARRA M, VAZQUEZ E. The influence of retained moisture in aggregates from recycling on the properties of new hardened concrete[J]. Waste Management, 1996, 16(1/2/3):113-117. [15] 鲁博文,羿庄城,吴艳光,等.几种填料对偏高岭土-粉煤灰基地质聚合物的增强改性[J].武汉工程大学学报,2020,42(3):293-297.[16] GUNASEKARA C, ZHOU Z Y, LAW D W, et al. Microstructure and strength development of quaternary blend high-volume fly ash concrete[J]. Journal of Materials Science, 2020, 55(15):6441-6456.[17] KOU S C, POON C S. Long-term mechanical and durability properties of recycled aggregate concrete prepared with the incorporation of fly ash[J]. Cement & Concrete Composites, 2013, 37(1):12-19. [18] CHINDAPRASIRT P, HOMWUTTIWONG S,SIRIVIVATNANON V. Influence of fly ash fineness on strength, drying shrinkage and sulfate resistance of blended cement mortar[J]. Cement and Concrete Research, 2004, 37(4):1087-1092. [19] GENG J, SUN J Y. Characteristics of the carbonation resistance of recycled fine aggregate concrete[J]. Construction and Building Materials, 2013, 49(12):814-820.[20] 肖建庄,陈祥磊,李标,等.纳米SiO2和粉煤灰复掺对再生混凝土性能的影响[J].建筑科学与工程学报,2020,37(1):26-32.[21] 张延年,董浩,刘晓阳,等.聚丙烯纤维增强混凝土拉压比试验[J].沈阳工业大学学报,2017,39(1):104-108.

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备注/Memo

备注/Memo:
收稿日期:2021-03-18基金项目:湖北省重点研发计划(2020BAB071);武汉工程大学研究生教育创新基金(CX2020109);武汉工程大学校内科学基金 (K201932,K2021031)作者简介:程子扬,硕士研究生。E-mail:[email protected]*通讯作者:屠艳平,博士,副教授。E-mail:[email protected]引文格式:程子扬,李敬芳,陈旭勇,等. 骨料含水量的差异对于粉煤灰再生混凝土性能的影响[J]. 武汉工程大学学报,2021,43(5):534-538,556.
更新日期/Last Update: 2021-10-27