武汉理工大学学报（交通科学与工程版）
武漢理工大學學報（交通科學與工程版）
무한리공대학학보（교통과학여공정판）
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY(TRANSPORTATION SCIENCE & ENGINEERING)
2015年
3期
560-563,568
,共5页
道路工程%多孔混凝土%强度%空隙率%力学性能
道路工程%多孔混凝土%彊度%空隙率%力學性能
도로공정%다공혼응토%강도%공극솔%역학성능
road engineering%porous concrete%strength%void fraction%mechanical properties
通过室内试验，研究了10～15 m m集料含量、水灰比、目标空隙率和4种不同类型的有机聚合物乳液对多孔混凝土力学性能的影响．试验结果表明：当10～15 m m集料含量为40％时，混凝土的7 d抗压强度最大，空隙率最小；当水灰比小于0．28时，随水灰比的增大，混凝土的早期和后期强度显著增大，而当水灰比大于0．28时，强度随水灰比有所减小；随目标空隙率的增大，混凝土不同龄期的强度大幅下降，实测空隙率、实测有效空隙率和目标空隙率之间都具有很好的二次相关性；丁苯乳液对混凝土早期强度的改善作用最明显，而氯丁乳液对混凝土后期强度其主要作用，强度对改性环氧乳胶掺量的变化最敏感．
通過室內試驗，研究瞭10～15 m m集料含量、水灰比、目標空隙率和4種不同類型的有機聚閤物乳液對多孔混凝土力學性能的影響．試驗結果錶明：噹10～15 m m集料含量為40％時，混凝土的7 d抗壓彊度最大，空隙率最小；噹水灰比小于0．28時，隨水灰比的增大，混凝土的早期和後期彊度顯著增大，而噹水灰比大于0．28時，彊度隨水灰比有所減小；隨目標空隙率的增大，混凝土不同齡期的彊度大幅下降，實測空隙率、實測有效空隙率和目標空隙率之間都具有很好的二次相關性；丁苯乳液對混凝土早期彊度的改善作用最明顯，而氯丁乳液對混凝土後期彊度其主要作用，彊度對改性環氧乳膠摻量的變化最敏感．
통과실내시험，연구료10～15 m m집료함량、수회비、목표공극솔화4충불동류형적유궤취합물유액대다공혼응토역학성능적영향．시험결과표명：당10～15 m m집료함량위40％시，혼응토적7 d항압강도최대，공극솔최소；당수회비소우0．28시，수수회비적증대，혼응토적조기화후기강도현저증대，이당수회비대우0．28시，강도수수회비유소감소；수목표공극솔적증대，혼응토불동령기적강도대폭하강，실측공극솔、실측유효공극솔화목표공극솔지간도구유흔호적이차상관성；정분유액대혼응토조기강도적개선작용최명현，이록정유액대혼응토후기강도기주요작용，강도대개성배양유효참량적변화최민감．
Through laboratory tests ,the effects of the proportion of 10~15mm paiticle、water‐cement ration、target porosity and four different types of organic polymer emulsion on the properties of porous concrete are studied .The results indicated that :When 10~15 mm aggregate content is 40% ,the com‐pressive strength of 7d has a maximum value ,and the void ratio has a minimum value ;When the water‐cement ratio is less than 0 .28 ,as water‐cement ratio increasing ,the early strength and late strength of concrete increased dramatically ,and when the water‐cement ratio is greater than 0 .28 ,the strength with water cement ratio decreased ;With the target porosity increases ,the strength of the concrete in different age decreased dramatically ,and it has a good quadratic correlation between the measured po‐rosity、effective porosity and the target porosity ;The improvement effect of styrene butadiene latex on the early strength of concrete is most obvious ,and chloroprene latex has main function for the late strength of concrete ,the most sensitive to intensity variations on modified epoxy latexcontent .
