本文關(guān)鍵詞： 水泥混凝土路面裂縫 力學(xué)性能 數(shù)據(jù)擬合 方差分析　出處：《長(zhǎng)安大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：水泥混凝土路面裂縫修補(bǔ)問(wèn)題一向備受?chē)?guó)內(nèi)外眾多科研院所以及養(yǎng)護(hù)部門(mén)的重視，本修補(bǔ)料以普通硅酸鹽早強(qiáng)水泥為基材，適當(dāng)摻加粉煤灰、礦渣粉、熟石灰粉和石英粉等外摻料，采用較低的水膠比，通過(guò)試驗(yàn)研究、理論分析及數(shù)據(jù)擬合、方差分析等方法，結(jié)合XRD和SEM微觀試驗(yàn)，研究開(kāi)發(fā)一種強(qiáng)度高、流動(dòng)性好、抗凍性強(qiáng)、微膨脹的路面裂縫修補(bǔ)料。主要研究工作及得出的結(jié)論有： （1）選定水膠比，結(jié)合摻合料及外加劑對(duì)修補(bǔ)料的強(qiáng)度、流動(dòng)度及收縮性能的影響，選定粉煤灰、礦渣粉、熟石灰粉、石英粉的合適摻量及減水劑、膨脹劑等外加劑的摻量，結(jié)果表明，當(dāng)摻合料粉煤灰、礦渣粉、熟石灰粉、粉膠比的摻量分別為20%、10%、6%、0.1，減水劑和膨脹劑的摻量分別為1%、8%時(shí)，修補(bǔ)料的強(qiáng)度和流動(dòng)度達(dá)到較大值，滿(mǎn)足施工需求。 （2）根據(jù)已選定的摻合料及外加劑的摻量，對(duì)修補(bǔ)料的抗凍性能進(jìn)行研究，本文以修補(bǔ)料的質(zhì)量衰減和相對(duì)動(dòng)彈性模量衰減為研究對(duì)象，采用三種不同的數(shù)據(jù)擬合方法對(duì)試驗(yàn)所得數(shù)據(jù)進(jìn)行擬合，結(jié)果顯示：在擬合精度上，基于相對(duì)動(dòng)彈性模量的模型比基于質(zhì)量損失的模型具有更好的精度，指數(shù)函數(shù)模型比線性函數(shù)模型具有更好的擬合精度，并預(yù)測(cè)本修補(bǔ)料的耐凍融循環(huán)次數(shù)為379次，，可使用壽命為34.33年。 （3）根據(jù)已選定的摻合料及外加劑的摻量，采用一元方差分析方法分析修補(bǔ)料粘結(jié)面粗糙度的不同處理方式對(duì)粘結(jié)抗折強(qiáng)度差異的顯著性，結(jié)果表明：在粘結(jié)試驗(yàn)之前，新舊修補(bǔ)料斷裂面不同的處理方式對(duì)其粘結(jié)面的力學(xué)性能有較為顯著的影響。
[Abstract]:Cement concrete pavement crack repair problem has been paid attention to by many scientific research institutes and maintenance departments at home and abroad. This repair material is based on Portland early strength cement with proper addition of fly ash and slag powder. Using the low water-binder ratio, the paper combines the XRD and SEM microcosmic tests with the methods of experimental study, theoretical analysis and data fitting, variance analysis and so on. This paper studies and develops a kind of pavement crack repair material with high strength, good fluidity, strong frost resistance and slight expansion. The main research work and conclusions are as follows: 1) choose the water / binder ratio, combined with the influence of admixture and admixture on the strength, fluidity and shrinkage of the mending material, and select the proper amount of fly ash, slag powder, hydrated lime powder, quartz powder and water reducer. The results show that the ratio of fly ash, slag powder, clinker powder and powder to binder is 20% 1010% and 0.1% respectively. The content of water reducer and expander is 1 and 8 respectively. The strength and fluidity of the mending material reach a large value to meet the construction demand. 2) according to the content of admixture and admixture, the antifreeze property of mending material is studied. The mass attenuation and relative dynamic elastic modulus attenuation of mending material are taken as the research object in this paper. Three different data fitting methods are used to fit the experimental data. The results show that the model based on relative dynamic modulus of elasticity has better precision than the model based on mass loss. The exponential function model has a better fitting precision than the linear function model, and it is predicted that the freeze-thaw resistance cycle of the material is 379 times and the service life is 34.33 years. 3) according to the content of admixture and admixture, the significance of different treatment methods of surface roughness to the difference of bond flexural strength is analyzed by the method of univariate analysis of variance (ANOVA). The results show that before the bonding test, the mechanical properties of the bond surface are significantly affected by the different treatment methods of the fracture surface of the new and old patching materials.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U416.216;U414

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