纤维改性再生骨料透水混凝土力学性能透水性和耐磨性研究
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摘要
再生骨料透水混凝土是利用再生骨料制备透水混凝土,具备再生混凝土和透水混凝土的功能优势,但导致强度、耐磨性变差,故该文进行再生骨料透水混凝土改性研究。将聚丙烯纤维和碳纤维以不同的体积分数(其中聚丙烯纤维掺量分别为0.3%、0.6%、0.9%、1.2%,碳纤维掺量分别为0.2%、0.4%、0.6%、0.8%)掺入再生透水混凝土中,采用WAW-1000电液伺服万能试验机测定力学强度,自制透水装置测定透水系数,洛杉矶磨耗试验机测定耐磨性,获取不同种类和掺量纤维对透水性、力学性能和耐磨性的影响。试验结果表明,聚丙烯纤维和碳纤维的掺入对混凝土的孔隙率和透水系数影响不大,但可提高强度和耐磨性。随着纤维掺量的增加,抗压强度和劈裂抗拉强度呈先增大后减少的趋势;质量损失率也先减少后增大趋势。经优化分析可知聚丙烯纤维最优掺量为0.6%,碳纤维最优掺量为0.4%。该成果可为纤维改性混凝土以及再生骨料透水混凝土的推广应用提供参考。
Recycled aggregate pervious concrete are made by cement, water and recycled aggregates, which conforms to the concept of sustainable development, can be used to construction of the sponge city, and has important social and economic benefits. In order to study the application of fiber in recycled aggregate pervious concrete(RAPC), RAPC was prepared with waste prefabricated pavement concrete as the source of recycled aggregate, natural concrete pervious concrete(NAPC) was prepared as a comparison. Two series of fibers added in RAPC were designed, which contained 0.3%, 0.6%, 0.9%, 1.2% polypropylene fiber(PF), and 0.2%, 0.4%, 0.6%, 0.8% carbon fiber(CF) by volume fraction, respectively, RAPC without PF and CF showed as control group. With the experiment on test cubes under standard maintenance, compressive strength, splitting tensile strength, the continuous porosity, the permeability coefficient and the abrasion resistance were measured. The results showed that: 1) Compared with NAPC, the continuous porosity and permeability coefficient of RAPC are lower than those of NAPC, the compressive strength of RAPC has improved by 29.33%, the splitting tensile strength has reduced by 18.12%, the mass loss ratio of RAPC has improved by 11.26%; 2) By adding the fibers to RAPC, the continuous porosity with different volume fractions of fibers varies in a certain range. The continuous porosity of RAPC containing PF ranges from 18.6% to 20.8%, and that of RAPC containing CF ranges from 19.2% to 21.7%. In general, the permeability coefficient changes in a small rang with the changing of fiber content. The permeability coefficient of RAPC with PF ranges from 3.87-4.17 mm/s, and the permeability coefficient of RAPC containing CF ranges from 4.02-4.16 mm/s. The effects of PF and CF on the continuous porosity and permeability coefficient of RAPC are similar. 3) By adding PF in RAPC, compressive strength of RAPC is lower than that of control group. By adding CF in RAPC, compressive strength of RAPC increased first and then decreased with the increase of CF content. When the amount of CF up to 0.4%, the compressive strength reached a maximum value of 9.2 MPa which is higher than 14% that of control group. The splitting tensile strength increased first and then decreased with the increase of fiber content. For PF, when the amount of PF up to 0.6%, the compressive strength reached a maximum value of 2.0 MPa which is higher than that of control group(52.67%). For carbon fiber, when the amount of CF up to 0.4%, the compressive strength reached a maximum value of 1.78 MPa which is higher than that of control group(35.88%). 4) PF is better than CF for improving abrasion resistance. When the amount of PF up to 0.9%, the abrasion resistance reached a minimum value, which is lower than that of control group(41.2%). When the amount of CF up to 0.4%, the abrasion resistance reached a minimum value which is lower than that of control group(29.4%). 5) With the application of optimization theory, the optimum amount of PF in RAPC is 0.6%, and the optimal amount of CF in RAPC is 0.4%.The results can provide reference for the promotion and application of fiber-modified concrete and recycled aggregate pervious concrete.
Recycled aggregate pervious concrete are made by cement, water and recycled aggregates, which conforms to the concept of sustainable development, can be used to construction of the sponge city, and has important social and economic benefits. In order to study the application of fiber in recycled aggregate pervious concrete(RAPC), RAPC was prepared with waste prefabricated pavement concrete as the source of recycled aggregate, natural concrete pervious concrete(NAPC) was prepared as a comparison. Two series of fibers added in RAPC were designed, which contained 0.3%, 0.6%, 0.9%, 1.2% polypropylene fiber(PF), and 0.2%, 0.4%, 0.6%, 0.8% carbon fiber(CF) by volume fraction, respectively, RAPC without PF and CF showed as control group. With the experiment on test cubes under standard maintenance, compressive strength, splitting tensile strength, the continuous porosity, the permeability coefficient and the abrasion resistance were measured. The results showed that: 1) Compared with NAPC, the continuous porosity and permeability coefficient of RAPC are lower than those of NAPC, the compressive strength of RAPC has improved by 29.33%, the splitting tensile strength has reduced by 18.12%, the mass loss ratio of RAPC has improved by 11.26%; 2) By adding the fibers to RAPC, the continuous porosity with different volume fractions of fibers varies in a certain range. The continuous porosity of RAPC containing PF ranges from 18.6% to 20.8%, and that of RAPC containing CF ranges from 19.2% to 21.7%. In general, the permeability coefficient changes in a small rang with the changing of fiber content. The permeability coefficient of RAPC with PF ranges from 3.87-4.17 mm/s, and the permeability coefficient of RAPC containing CF ranges from 4.02-4.16 mm/s. The effects of PF and CF on the continuous porosity and permeability coefficient of RAPC are similar. 3) By adding PF in RAPC, compressive strength of RAPC is lower than that of control group. By adding CF in RAPC, compressive strength of RAPC increased first and then decreased with the increase of CF content. When the amount of CF up to 0.4%, the compressive strength reached a maximum value of 9.2 MPa which is higher than 14% that of control group. The splitting tensile strength increased first and then decreased with the increase of fiber content. For PF, when the amount of PF up to 0.6%, the compressive strength reached a maximum value of 2.0 MPa which is higher than that of control group(52.67%). For carbon fiber, when the amount of CF up to 0.4%, the compressive strength reached a maximum value of 1.78 MPa which is higher than that of control group(35.88%). 4) PF is better than CF for improving abrasion resistance. When the amount of PF up to 0.9%, the abrasion resistance reached a minimum value, which is lower than that of control group(41.2%). When the amount of CF up to 0.4%, the abrasion resistance reached a minimum value which is lower than that of control group(29.4%). 5) With the application of optimization theory, the optimum amount of PF in RAPC is 0.6%, and the optimal amount of CF in RAPC is 0.4%.The results can provide reference for the promotion and application of fiber-modified concrete and recycled aggregate pervious concrete.
引文
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[9]Otani T,Sato Y,Murakami K,et al.Study on an equation for predicting the compressive strength of porous concrete[J].Journal of Structural and Construction Engineering,2005,70(590):25-30.
[10]Sata V,Wongsa A,Chindaprasirt P.Properties of pervious geopolymer concrete using recycled aggregates[J].Construction&Building Materials,2013,42(9):33-39.
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[12]Zhang Zhiquan,Zhang Yufen,Yan Changgen,et al.Influence of crushing index on properties of recycled aggregates pervious concrete[J].Construction and Building Materials,2017,135:112-118.
[13]Zaetang Y,Sata V,Wongsa A,et al.Properties of pervious concrete containing recycled concrete block aggregate and recycled concrete aggregate[J].Construction&Building Materials,2016,111:15-21.
[14]张浩博,杜晓青,寇佳亮,等.再生骨料透水混凝土抗压性能及透水性能试验研究[J].实验力学,2017(2):247-256.Zhang Haobo,Du Xiaoqing,Kou Jialiang,et al.Experimental study of comprehensive and permeable performance of permeable concrete with recycled aggregate[J].Journal of Experimental Mechanics,2017(2):247-256.(in Chinese with English abstract)
[15]Hesami S,Ahmadi S,Nematzadeh M.Effects of rice husk ash and fiber on mechanical properties of pervious concrete pavement[J].Construction&Building Materials,2014,53(4):680-691.
[16]Rangelov M,Nassiri S,Haselbach L,et al.Using carbon fiber composites for reinforcing pervious concrete[J].Construction&Building Materials,2016,126:875-885.
[17]Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens:ASTM C39/C39M-2013[S].2013.
[18]Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens:ASTM C496/C496M-2011[S].2011.
[19]再生骨料透水混凝土应用技术规程:CJJ/T 253-2016[S].2016.
[20]透水水泥混凝土路面技术规程:CJJ/T 135-2009[S].2009.
[21]Standard Test Method for Determining Potential Resistance to Degradation of Pervious Concrete by Impact and Abrasion:ASTM C1747/C1747M-2013[S].2013.
[22]朱金春,杨鼎宜,张晓欢,等.再生透水混凝土中再生骨料掺量问题的研究[J].混凝土与水泥制品,2014(10):6-11.Zhu Jinchun,Yang Dingyi,Zhang Xiaohuan,et al.Study on the content of recycled aggregate in recycled aggregate pervious concrete[J].China Concrete and Cement Products,2014(10):6-11.(in Chinese with English abstract)
[23]薛如政,刘京红,苗建伟,等.再生骨料透水混凝土性能的研究[J].河北农业大学学报,2017,40(4):128-133.Xue Ruzheng,Liu Jinghong,Miao Jianwei,et al.Study on the performance of recycled aggregate permeable concrete[J].Journal of Agricultura University of Hebei,2017,40(4):128-133.(in Chinese with English abstract)
[24]蒋正武,孙振平,王培铭.若干因素对多孔透水混凝土性能的影响[J].建筑材料学报,2005,8(5):513-519.Jiang Zhengwu,Sun Zhenping,Wang Peiming.Effects of some factors on properties of porous pervious concrete[J].Journal of Building Materials,2005,8(5):513-519.(in Chinese with English abstract)
[25]张朝辉,王沁芳,杨娟.透水混凝土强度和透水性影响因素研究[J].混凝土,2008(3):7-9.Zhang Zhaohui,Wang Qinfang,Yang Juan.Influence factors of compressive strength and permeability of pervious concrete[J].Concrete,2008(3):7-9.(in Chinese with English abstract)
[26]张贤超,尹健,池漪.透水混凝土性能研究综述[J].混凝土,2010(12):47-50.Zhang Xianchao,Yin Jian,Chi Yi.Summary of performance for pervious concrete[J].Concrete,2010(12):47-50.(in Chinese with English abstract)
[27]王娇娜.透水性聚丙烯纤维混凝土试验研究[D].邯郸:河北工程大学,2008.Wang Jiaona.Experimental Study on Pervious Concrete Mixing with Polypropylene Fiber[D].Handan:Hebei University of Engineering,2008.(in Chinese with English abstract)
[28]张轶伦.聚丙烯纤维混凝土早期收缩与抗裂性能试验研究[D].杭州:浙江大学,2006.Zhang Yilun.Experimental Investigation on Early-age Shrinkage and Racking-resistance Property in Polypropylene Fiber-reinforced Concrete[D].Hangzhou:Zhejiang University,2006.(in Chinese with English abstract)
[29]李兆林,石振武,柳明亮.不同种类聚丙烯纤维混凝土性能对比试验[J].科学技术与工程,2014,14(31):292-296.Li Zhaolin,Shi Zhenwu,Liu Mingliang.Comparative experiment on concrete performance of different kinds of polypropylene fiber[J].Science Technology and Engineering,2014,14(31):292-296.(in Chinese with English abstract)
[30]满都拉.聚丙烯纤维对再生粗集料透水性混凝土的影响[J].硅酸盐通报,2015,34(3):694-706.Man Dula.Effect of polypropylene fibers on the recycled coarse aggregate pervious concrete[J].Bulletin of the Chinese Ceramic Society,2015,34(3):694-706.(in Chinese with English abstract)
[31]陈魁.试验设计与分析[M].北京:清华大学出版社,2005.
[2]Rizvi R,Tighe S,Henderson V,et al.Evaluating the use of recycled concrete aggregate in pervious concrete pavement[J].Transportation Research Record Journal of the Transportation Research Board,2009,2164:132-140.
[3]陈守开,杨晴,刘秋常,等.再生骨料透水混凝土强度及透水性能试验[J].农业工程学报,2017,33(15):141-146.Chen Shoukai,Yang Qing,Liu Qiuchang,et al.Experiment on strength and permeability of recycled aggregate pervious concrete[J].Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE),2017,33(15):141-146.(in Chinese with English abstract)
[4]陈守开,常承艳,郭磊,等.再生骨料掺量对透水混凝土性能的影响[J].应用基础与工程科学学报,2018,26(1):98-108.Chen Shoukai,Chang Chengyan,Guo Lei,et al.Influence of recycled aggregates content on the performance of pervious concrete[J].Journal of Basic Science and Engineering,2018,26(1):98-108.(in Chinese with English abstract)
[5]李秋实,何东坡.天然与再生集料透水混凝土对比试验[J].北京工业大学学报,2015,41(1):89-94.Li Qiushi,He Dongpo.Comparative study of porous concretes using natural and recycled aggregates[J].Journal of Beijing University of Technology,2015,41(1):89-94.(in Chinese with English abstract)
[6]孙家瑛,梁山.再生混凝土集料透水性混凝土性能研究及应用[J].建筑材料学报,2012,15(6):747-750.Sun Jiaying,Liang Shan.Performance of recycled concrete aggregate porous cement concrete and its application[J].Journal of Building Materials,2012,15(6):747-750.(in Chinese with English abstract)
[7]陈守开,刘新飞,郭磊,等.再生骨料掺配比对再生透水混凝土性能的影响[J].复合材料学报,2018,35(6):1590-1598.Chen Shoukai,Liu Xinfei,Guo Lei,et al.Influence of recycled aggregate proportion on performance of recycled pervious concrete[J].Acta Materiae Compositae Sinica,2018,35(6):1590-1598.(in Chinese with English abstract)
[8]肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2008.
[9]Otani T,Sato Y,Murakami K,et al.Study on an equation for predicting the compressive strength of porous concrete[J].Journal of Structural and Construction Engineering,2005,70(590):25-30.
[10]Sata V,Wongsa A,Chindaprasirt P.Properties of pervious geopolymer concrete using recycled aggregates[J].Construction&Building Materials,2013,42(9):33-39.
[11]Gaedicke C,Marines A,Miankodila F.Assessing the abrasion resistance of cores in virgin and recycled aggregate pervious concrete[J].Construction&Building Materials,2014,68:701-708.
[12]Zhang Zhiquan,Zhang Yufen,Yan Changgen,et al.Influence of crushing index on properties of recycled aggregates pervious concrete[J].Construction and Building Materials,2017,135:112-118.
[13]Zaetang Y,Sata V,Wongsa A,et al.Properties of pervious concrete containing recycled concrete block aggregate and recycled concrete aggregate[J].Construction&Building Materials,2016,111:15-21.
[14]张浩博,杜晓青,寇佳亮,等.再生骨料透水混凝土抗压性能及透水性能试验研究[J].实验力学,2017(2):247-256.Zhang Haobo,Du Xiaoqing,Kou Jialiang,et al.Experimental study of comprehensive and permeable performance of permeable concrete with recycled aggregate[J].Journal of Experimental Mechanics,2017(2):247-256.(in Chinese with English abstract)
[15]Hesami S,Ahmadi S,Nematzadeh M.Effects of rice husk ash and fiber on mechanical properties of pervious concrete pavement[J].Construction&Building Materials,2014,53(4):680-691.
[16]Rangelov M,Nassiri S,Haselbach L,et al.Using carbon fiber composites for reinforcing pervious concrete[J].Construction&Building Materials,2016,126:875-885.
[17]Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens:ASTM C39/C39M-2013[S].2013.
[18]Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens:ASTM C496/C496M-2011[S].2011.
[19]再生骨料透水混凝土应用技术规程:CJJ/T 253-2016[S].2016.
[20]透水水泥混凝土路面技术规程:CJJ/T 135-2009[S].2009.
[21]Standard Test Method for Determining Potential Resistance to Degradation of Pervious Concrete by Impact and Abrasion:ASTM C1747/C1747M-2013[S].2013.
[22]朱金春,杨鼎宜,张晓欢,等.再生透水混凝土中再生骨料掺量问题的研究[J].混凝土与水泥制品,2014(10):6-11.Zhu Jinchun,Yang Dingyi,Zhang Xiaohuan,et al.Study on the content of recycled aggregate in recycled aggregate pervious concrete[J].China Concrete and Cement Products,2014(10):6-11.(in Chinese with English abstract)
[23]薛如政,刘京红,苗建伟,等.再生骨料透水混凝土性能的研究[J].河北农业大学学报,2017,40(4):128-133.Xue Ruzheng,Liu Jinghong,Miao Jianwei,et al.Study on the performance of recycled aggregate permeable concrete[J].Journal of Agricultura University of Hebei,2017,40(4):128-133.(in Chinese with English abstract)
[24]蒋正武,孙振平,王培铭.若干因素对多孔透水混凝土性能的影响[J].建筑材料学报,2005,8(5):513-519.Jiang Zhengwu,Sun Zhenping,Wang Peiming.Effects of some factors on properties of porous pervious concrete[J].Journal of Building Materials,2005,8(5):513-519.(in Chinese with English abstract)
[25]张朝辉,王沁芳,杨娟.透水混凝土强度和透水性影响因素研究[J].混凝土,2008(3):7-9.Zhang Zhaohui,Wang Qinfang,Yang Juan.Influence factors of compressive strength and permeability of pervious concrete[J].Concrete,2008(3):7-9.(in Chinese with English abstract)
[26]张贤超,尹健,池漪.透水混凝土性能研究综述[J].混凝土,2010(12):47-50.Zhang Xianchao,Yin Jian,Chi Yi.Summary of performance for pervious concrete[J].Concrete,2010(12):47-50.(in Chinese with English abstract)
[27]王娇娜.透水性聚丙烯纤维混凝土试验研究[D].邯郸:河北工程大学,2008.Wang Jiaona.Experimental Study on Pervious Concrete Mixing with Polypropylene Fiber[D].Handan:Hebei University of Engineering,2008.(in Chinese with English abstract)
[28]张轶伦.聚丙烯纤维混凝土早期收缩与抗裂性能试验研究[D].杭州:浙江大学,2006.Zhang Yilun.Experimental Investigation on Early-age Shrinkage and Racking-resistance Property in Polypropylene Fiber-reinforced Concrete[D].Hangzhou:Zhejiang University,2006.(in Chinese with English abstract)
[29]李兆林,石振武,柳明亮.不同种类聚丙烯纤维混凝土性能对比试验[J].科学技术与工程,2014,14(31):292-296.Li Zhaolin,Shi Zhenwu,Liu Mingliang.Comparative experiment on concrete performance of different kinds of polypropylene fiber[J].Science Technology and Engineering,2014,14(31):292-296.(in Chinese with English abstract)
[30]满都拉.聚丙烯纤维对再生粗集料透水性混凝土的影响[J].硅酸盐通报,2015,34(3):694-706.Man Dula.Effect of polypropylene fibers on the recycled coarse aggregate pervious concrete[J].Bulletin of the Chinese Ceramic Society,2015,34(3):694-706.(in Chinese with English abstract)
[31]陈魁.试验设计与分析[M].北京:清华大学出版社,2005.
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