【摘要】：灌漿料是由水泥、外加劑（減水劑、膨脹劑、早強(qiáng)劑、消泡劑等）、集料和礦物摻合料等材料拌合在一起的干混料，加水?dāng)嚢韬螅�，具有高流�?dòng)性、高強(qiáng)度和微膨脹等特點(diǎn)，因此灌漿料得到了更加廣泛的應(yīng)用。 近些年裝配式鋼筋混凝土結(jié)構(gòu)成為我國建筑結(jié)構(gòu)發(fā)展的重要方向之一，裝配式混凝土結(jié)構(gòu)的節(jié)點(diǎn)連接對(duì)灌漿料的強(qiáng)度要求較高。針對(duì)灌漿料強(qiáng)度的問題，研究了灌漿料各組成材料在不同摻量的情況下，對(duì)灌漿料流動(dòng)度和強(qiáng)度等性能的影響。將普通硅酸鹽水泥與硫鋁酸鹽水泥進(jìn)行復(fù)配，得到兩者的最佳摻量（3:7），可明顯改善灌漿料的流動(dòng)性能，提高灌漿料的強(qiáng)度。通過在灌漿料中加入一定量的硅灰，可明顯減少灌漿料表面的氣泡，改善灌漿料的表面狀態(tài)。通過改變灌漿料中標(biāo)準(zhǔn)砂的摻量，研究其對(duì)灌漿料的性能影響，將標(biāo)準(zhǔn)砂換成石英砂，進(jìn)一步研究石英砂摻量對(duì)灌漿料的性能影響，并配制出1d抗壓強(qiáng)度達(dá)到40MPa、28d抗壓強(qiáng)度達(dá)到100MPa的灌漿料。 通過以上試驗(yàn)得到各組成材料的摻量后，通過正交試驗(yàn)進(jìn)一步優(yōu)化配合比。選取狀態(tài)良好、強(qiáng)度高等性能良好的灌漿料進(jìn)行耐久性能試驗(yàn)，試驗(yàn)結(jié)果表明配制的灌漿料具有良好的耐堿性能和耐硫酸鹽性能。 最后對(duì)灌漿料微觀性能進(jìn)行研究。從微觀方面分析出灌漿料的主要水化產(chǎn)物是鈣礬石和水化硅酸鈣，以及灌漿料不同齡期強(qiáng)度變化的原因，為超高強(qiáng)水泥基灌漿料的應(yīng)用提供理論依據(jù)。
[Abstract]:The grouting material is a dry mixture mixed with cement, admixture (water reducer, expander, early strength agent, defoamer, etc.), aggregate and mineral admixture, etc. After mixing with water, it has the characteristics of high fluidity, high strength and micro expansion. Therefore, the grouting material has been more widely used. In recent years, the fabricated reinforced concrete structure has become one of the important directions of the development of the building structure in China. The joint connection of the fabricated concrete structure requires high strength of the grouting material. In view of the problem of grouting material strength, the influence of the composition of grouting material on the fluidity and strength of grouting material was studied. The optimum dosage (3:7) of ordinary Portland cement and sulphoaluminate cement is obtained, which can obviously improve the fluidity of grouting material and the strength of grouting material. By adding a certain amount of silica fume to the grouting material, the bubble on the surface of the grouting material can be obviously reduced and the surface state of the grouting material can be improved. By changing the content of standard sand in grouting material, the effect of standard sand on the performance of grouting material is studied, and the standard sand is replaced by quartz sand, and the effect of the content of quartz sand on the performance of grouting material is further studied. The grouting material with 1d compressive strength up to 40MPa / 28d and 100MPa was prepared. The mixture ratio was optimized by orthogonal test after the content of each component material was obtained through the above experiments. The results show that the grouting material has good alkali resistance and sulfate resistance. Finally, the microscopic properties of grouting materials are studied. The main hydration products of the grouting materials are ettringite and calcium silicate hydrated, and the reasons for the change of the strength of the grouting materials at different ages are analyzed from the microscopic point of view, which provides a theoretical basis for the application of ultra-high strength cement based grouting materials.
【學(xué)位授予單位】：河北聯(lián)合大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU578

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