【摘要】：聚合物改性混凝土是指將水泥和骨料在混合的時(shí)候與分散在水中、或者可以在水中分散的有機(jī)聚合物材料結(jié)合所生成的復(fù)合材料,聚合物混凝土的特點(diǎn)是強(qiáng)度高、吸水率低、耐化學(xué)性好、固化周期短以及應(yīng)用范圍廣。但對(duì)于聚合物混凝土而言,目前尚缺乏高效的增強(qiáng)材料,因此尋找合適的纖維作為增強(qiáng)體材料,進(jìn)一步提高聚合物混凝土的性能具有重要的研究意義。本研究首先測(cè)定了不同配比下聚合物改型混凝土的力學(xué)性能,通過(guò)正交實(shí)驗(yàn)確定了最佳的配料混合比,并在此基礎(chǔ)上對(duì)進(jìn)行了混凝土的聚合物改性技術(shù)研究,測(cè)定了改性后混凝土的力學(xué)性能和抗凍性。實(shí)驗(yàn)結(jié)果表明:選擇的聚合物改型混凝土的最佳配合比為:水泥:砂子:石子:用水量:FDN用量=1∶1.30∶2.42∶0.42∶0.01(單位:kg/m3)。而且,將聚合物乳液添加到混凝土中,不但改善了原有混凝土的性能,而且使聚合物混凝土具有普通混凝土所不具備的特殊用途—修補(bǔ)工程。
[Abstract]:Polymer modified concrete is a composite material formed when cement and aggregate are mixed with organic polymer materials dispersed in water or can be dispersed in water. Polymer concrete is characterized by high strength and low water absorption. Good chemical resistance, short curing period and wide range of application. However, for polymer concrete, there is still a lack of efficient reinforcement materials, so it is of great significance to find suitable fibers as reinforcements to further improve the performance of polymer concrete. In this study, the mechanical properties of polymer modified concrete with different proportions were measured, and the optimum blending ratio was determined by orthogonal experiment. On the basis of this, the polymer modification technology of concrete was studied. The mechanical properties and frost resistance of modified concrete were measured. The experimental results show that the optimum mix ratio of polymer modified concrete is: cement: sand: stone: water consumption: 1: 1.30: 2.42: 0.422: 0.01 (unit: kg / m ~ 3). Moreover, adding polymer emulsion to concrete not only improves the performance of the original concrete, but also makes the polymer concrete have a special purpose that ordinary concrete does not have.
【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】：2015
【分類號(hào)】：TU528

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本文編號(hào)：2177173