丁苯乳液与纳米SiO2对PVA纤维增强砂浆力学性能的优化研究
Optimization of mechanical properties of PVA fiber reinforced mortar based on styrene-butadiene emulsion and nano-SiO2
关键词：
丁苯乳液；纳米SiO2；抗折强度；抗压强度；韧性；PVA纤维；砂浆；断裂能；压折比
Key words：
丁苯乳液；纳米SiO2；抗折强度；抗压强度；韧性；PVA纤维；砂浆；断裂能；压折比
刊期：
2026年第3期
DOI：
10.19761/j.1000-4637.25040186
文章编号：
基金项目：
内蒙古交通集团有限公司科技创新项目（JTJT-2024-02）。
作者：
赵通顺1，张旭亮1，王 博1，郝 帅1，皇甫赛夫1，李泽磊2，王 茹2，*
单位：
1.内蒙古交通集团有限公司项目管理分公司，内蒙古 呼和浩特 010010；2.同济大学 材料科学 与工程学院，上海 201804
摘要
摘 要：研究了丁苯乳液（Styrene-butadiene emulsion，SB）和纳米SiO2（Nano-silica，NS）单掺、复掺（SB掺量为0%、10%、20%，NS掺量为0、0.5%、1.0%、1.5%、2.0%）对聚乙烯醇（Polyvinyl alcohol，PVA）纤维增强砂浆力学性能（抗折强度、抗压强度）、韧性（断裂能、压折比）的影响，并优选出最佳掺量。结果表明：单掺SB会降低砂浆的3 d抗折、抗压强度和7 d、28 d抗压强度，但会提高7 d、28 d抗折强度；随着NS单掺掺量的增加，砂浆3 d和7 d抗折强度波动增加，28 d抗折强度先增后降，3 d抗压强度基本增加，7 d和28 d抗压强度基本先增后降；SB与NS具有良好的协同作用，适宜掺量下二者复掺可以提高砂浆的力学性能；SB对砂浆的韧性影响较大，而NS对砂浆的韧性影响不显著；当NS掺量为1.0%、SB掺量为20%时，砂浆的强度较高，同时具有较好的韧性。
Abstract: The effects of styrene-butadiene emulsion (SB) and nano-SiO2 (NS) on the mechanical properties (flexural strength, compressive strength) and toughness (fracture energy, compressive-to-flexural ratio) of polyvinyl alcohol (PVA) fiber reinforced mortar were investigated through single and combined addition methods (SB content is 0, 10%, 20%, and NS content is 0, 0.5%, 1.0%, 1.5%, 2.0%). The optimal content was determined. The results show that single addition of SB reduces the 3 d flexural and compressive strength, as well as the 7 d and 28 d compressive strength, but increases the 7 d and 28 d flexural strength of mortar. With the increase of the single addition content of NS, the flexural strength of the mortar shows a fluctuating increase at 3 d and 7 d, the 28 d flexural strength increases initially and then decreases, the compressive strength basically increases at 3 d, while the compressive strength basically increases first and then decreases at 7 d and 28 d. SB and NS exhibit a good synergistic effect. At appropriate content levels, their combination can enhance the mechanical properties of mortar. SB has a significant impact on the toughness of mortar, while the influence of NS on mortar toughness is not significant. When the NS content is 1.0% and the SB content is 20%, the mortar exhibits relatively high strength along with good toughness.
结论
（1）单掺SB会降低砂浆的3 d抗折、抗压强度和7 d、28 d抗压强度，但会提高7 d、28 d抗折强度；随着NS单掺掺量的增加，砂浆3 d和7 d抗折强度波动增加，28 d抗折强度先增后降，3 d抗压强度基本增加，7 d和28 d抗压强度基本先增后降。
（2）SB与NS复掺时，当SB掺量一定时，随着NS掺量的增加，砂浆3 d、7 d抗折、抗压强度基本增加，28 d抗折、抗压强度基本先增后降；当NS掺量一定时，随着SB掺量的增加，砂浆的强度基本呈增加趋势。SB与NS具有良好的协同作用，适宜掺量下二者复掺可以提高砂浆的力学性能。
（3）SB可以显著提高砂浆的断裂能，且掺量越高，提高效果越显著。随着NS掺量的增加，砂浆的断裂能基本呈先增后降的趋势，当NS掺量为1.0%时断裂能最大。掺入SB会显著降低砂浆的压折比，而掺入NS对压折比的影响不显著。SB对砂浆的韧性影响较大，而NS对砂浆的韧性影响不显著。
（4）整体来看，当NS掺量为1.0%、SB掺量为20%时，PVA纤维增强砂浆的强度较高，同时具有较好的韧性。
参考文献
[1] ANDRIELLI M O,FL?譧VIO A S,EDUARDO M R F,et al.Coupled temperature and moisture effects on the tensile behavior of strain hardening cementitious composites(SHCC) reinforced with PVA fibers[J].Materials and Structures,2018,51(3):1-13.
[2] LIEW M S,MUHAMMAD A,KAMALUDDEEN U D,et al.Investigation of fibers reinforced engineered cementitious composites properties using quartz powder[J].Materials,2020,13:24-28.
[3] NOUSHINI A,SAMALI B,VESSALAS K.Effect of polyvinyl alcohol(PVA) fiber on dynamic and material properties of fiber reinforced concrete[J].Construction and Building Materials,2013,49:374-383.
[4] PEYVANDI A,SOROUSHIAN P,JAHANGIRNEJAD S.Enhancement of the structural efficiency and performance of concrete pipes through fiber reinforcement[J].Construction and Building Materials,2013,45:36-44.
[5] PAKRAVAN H R,JAMSHIDI M,LATIFI M.The effect of hydrophilic(polyvinyl alcohol) fiber content on the flexural behavior of engineered cementitious composites(ECC)[J].The Journal of The Textile Institute,2018,109(1):79-84.
[6] YANG E H,LI V C.Strain-rate effects on the tensile behavior of strain hardening cementitious composites[J].Construction and Building Materials,2014,52:96-104.
[7] 张红州.纤维混凝土界面性能及纤维作用机理研究[D].广州:广东工业大学,2004.
[8] 邓宗才,赵连志,丁建明,等.PVA纤维分散性及纤维混凝土弯曲韧性试验研究[J].混凝土与水泥制品,2021(8):49-53.
[9] 钱桂枫,高祥彪,钱春香.PVA纤维对混凝土力学性能的影响[J].混凝土与水泥制品,2010(3):52-54.
[10] 黄从运,陈超,陈川,等.聚丙烯纤维聚合物乳液改性修补砂浆及界面处理对其粘结性能的影响[J].化学建材,2009,25(2):24-27.
[11] 赵帅,李国忠,王英姿.聚丙烯纤维和聚合物乳液对水泥砂浆性能影响[J].建筑材料学报,2008(4):392-396.
[12] CHEN P W,CHUNG D L.Effect of polymer addition on the thermal stability and thermal expansion of cement[J].Cement and Concrete Research,1995,25(3):465-469.
[13] SUN H L,ZHANG X Z,ZHAO P,et al.Effects of nano-silica particle size on fresh state properties of cement paste[J].KSCE Journal of Civil Engineering,2021,25(7):2555-2566.
[14] JIANG S,SHAN B H,OUYANG J,et al.Rheological properties of cementitious composites with nano/fiber fillers[J].Construction and Building Materials,2018,158:786-800.
[15] WANG M,WANG R M,YAO H,et al.Research on the mechanism of polymer latex modified cement[J].Construction and Building Materials,2016,111:710-718.
[16] 梅迎军,王培铭,李志勇.聚丙烯纤维和丁苯乳液对水泥砂浆性能的影响[J].建筑材料学报,2006,9(5):613-618.
[17] KONG X,PAKUSCH J,JANSEN D,et al.Effect of polymer latexes with cleaned serum on the phase development of hydrating cement pastes[J].Cement and Concrete Research,2016,84:30-40.
waterborne epoxy emulsions and the effect of silica nanoparticles on their coatings properties[J].Progress in Organic Coatings,2021,156:106250.
[10] SUN Q,JIANG D,LI Q,et al.Mechanical properties and anti-efflorescence of cement-based coating containing silicon-aluminum based powder and modified-polyacrylate emulsion[J].Construction and Building Materials,2023,408:133614.
[11] WANG S,YANG J,WU Q,et al.Research progress in waterborne epoxy curing agent[J].Paint and Coatings Industry,2018,48(8):55-60.
[12] 李崇智,孙箫然,邓松文,等.苯丙乳液与聚丙烯酸酯乳液对透水混凝土性能影响的试验研究[J].材料导报,2023,37(增刊1):579-582.
[13] 戴圣,徐菲,李飞,等.复掺聚合物改性水下不分散浆液的性能研究[J].水利水运工程学报,2024(3):118-126.
[14] SOUSA R M S,GONCALVES A F,BAPTISTA B F A.Styrene-butadiene polymer action on compressive and tensile strengths of cement mortars[J].Materials and Structures,2008,41(7):1263-1273.
[15] 卢烁,姜东兵,李琦琦,等.改性聚丙烯酸酯乳液的制备及聚合物水泥基涂层耐久性评价报[J].硅酸盐学报,2023,51(11):2857-2867.
[16] 于超胜.基于非接触电阻率测量法的水泥基材料早期水化特性研究[J].混凝土与水泥制品,2024(3):21-25.
[17] 孙旻,王军,王洋.纤维增强磷酸钾镁水泥砂浆工作性、力学性能与韧性研究[J].混凝土与水泥制品,2024(1):64-66.
引用本文
赵通顺,张旭亮,王博,等.丁苯乳液与纳米SiO2对PVA纤维增强砂浆力学性能的优化研究[J].混凝土与水泥制品,2026,53(3):33-37,46. ZHAO T S,ZHANG X L,WANG B,et al.Optimization of mechanical properties of PVA fiber reinforced mortar based on styrene-butadiene emulsion and nano-SiO2[J].China Concrete and Cement Products,2026,53(3):33-37,46 (in Chinese).
下一个： 纳米CaCO3与混杂纤维协同增强混凝土的性能研究与数值模拟分析
相关文件