【正文】
摘要 水泥石是構(gòu)成 井下 水泥環(huán)的主要材料,屬于有先天微觀缺陷的脆性材料 ,其抗拉強(qiáng)度低 、抗破裂性能及 抗沖擊性能差 ,現(xiàn)有材料中橡膠粉和纖維均能在一定程度上改善水泥石力學(xué)性能 。 本 文 考察了 橡膠粉 、 無機(jī)纖維 CSD6 金屬纖維 在 冷漿或 50℃ 狀態(tài)下灌漿,再在 50℃水箱中養(yǎng)護(hù) 24 小時(shí) 后 水泥石的抗壓強(qiáng)度和 抗折強(qiáng)度 , 實(shí)驗(yàn) 表明 在 橡膠粉 加入 水泥漿 后 , 水泥石 的抗壓和抗折強(qiáng)度有所下降,但是存在最佳加量 使得抗壓強(qiáng)度減小量最小 。 纖維材料水泥漿的抗壓和抗折強(qiáng)度有所增大 ,抗折強(qiáng)度存在最佳加量 使得抗折強(qiáng)度增加最大 , 無機(jī)纖維和金屬纖維抗折強(qiáng)度的 最佳加量都是%, 而抗壓強(qiáng)度在加量 %后 變化 不大 ,增長(zhǎng)數(shù)率變小 。 通過抗壓和抗折實(shí)驗(yàn)確定了橡膠 成 分與纖維材料的最佳二元復(fù)合配比 :橡膠粉 3%+無機(jī)纖維 %;橡膠粉 3%+金屬纖維 %。 論文通過實(shí)驗(yàn)弄清了橡膠粉和兩種纖維材料對(duì)水泥石抗壓、抗折強(qiáng)度的影響規(guī)律,并通過抗壓強(qiáng)度和抗折強(qiáng)度實(shí)驗(yàn)及脆度系數(shù)分析,確定了橡膠粉和 無機(jī) 纖維及金屬纖維的最佳配比,相關(guān)實(shí)驗(yàn)結(jié)果為水泥 石 的力學(xué)性能改善提供了實(shí)驗(yàn)數(shù)據(jù)支撐。 關(guān)鍵詞 : 抗壓強(qiáng)度 ; 抗折強(qiáng)度 ; 橡膠粉 ; 無機(jī)纖維 ; 金屬纖維 ; 復(fù)合 ABSTRACT Cement constitutes downhole cement the main material, which is a congenital defect microstructure of brittle materials, low tensile strength, Anti rupture properties and resistance to impact poor, existing materials and fiber rubber powder can improve the mechanical properties of cement in a certain extent. This paper investigates the rubber powder, CSD66 inanic fibers, metal fibers in cold plasma or 50 176。 C under grouting, then at 50 176。 C water tank conservation 24 hours before measuring the cement pressive strength and flexural strength. Experiments show after rubber powder adding to cement, the cement pressive strength and flexural strength both have dropped. But there is an optimum amount of volume makes the minimum pressive strength decreased. The pressive and flexural strength of fiber cement has increased, bending strength of the best dosage makes the biggest increase in bending strength, inanic fiber and metal fiber bending strength of the best dosage is %. And the pressive strength with more % fiber has a little change, the growth rate has a few small changes. With pression and bending experiment with a rubberfiber material in the best binary posite ratio : rubber powder 3% inanic fibers %。 Rubber powder 3%, metal fibers %. Papers experiment clarified the rubber powder and two pairs of fiber cement pressive and flexural strength’s law, and with pressive strength and flexural strength tests and crisp coefficient analysis, determine the rubber powder and inanic fiber and metal fiber in the best ratio. Experimental results provided the experimental data support for improvement the mechanical properties of cement. Keywords: Compressive strength; Flexural strength; Rubber powder; Inanic fibers。 Metal fibers。 Composites 目錄 摘要 ................................................................................................................................ 1 ABSTRACT ................................................................................................................... 1 1 緒論 ............................................................................................................................. 1 研究背景 .......................................................................................................... 1 研究意義 .......................................................................................................... 1 研究目標(biāo)、思路及研究?jī)?nèi)容 .......................................................................... 2 研究目標(biāo) ............................................................................................... 2 研究思路 ............................................................................................... 2 研究?jī)?nèi)容 ............................................................................................... 2 2 橡膠粉對(duì)水泥石力學(xué)性能的影 響 ............................................................................. 3 橡膠粉的選材及應(yīng)用依據(jù) .............................................................................. 3 橡膠粉對(duì)水泥石抗壓強(qiáng)度和抗折強(qiáng)度的影響 .............................................. 4 實(shí)驗(yàn)結(jié)果 ............................................................................................... 4 結(jié)果分析 ............................................................................................... 7 3 纖維材料對(duì)水泥石性能的影響 ................................................................................. 9 纖維水泥應(yīng)用依據(jù) .......................................................................................... 9 纖維增強(qiáng)及增韌油井水泥作用機(jī)制 ............................................................ 10 纖維的選取 .................................................................................................... 10 無機(jī)纖維 CSD66 對(duì)水泥石 對(duì) 抗壓強(qiáng)度和抗折強(qiáng)度的影響 ........................ 11 CSD66 簡(jiǎn)介 ......................................................................................... 11 實(shí)驗(yàn)結(jié)果 ............................................................................................. 12 結(jié)果分析 ............................................................................................. 16 金屬纖維材料對(duì)水泥石抗壓強(qiáng)度和抗折強(qiáng)度的影響 ................................ 16 金屬纖維特征及主要性能 ................................................................. 17 金屬纖維分布和取向及主要影響因素 ............................................. 18 實(shí)驗(yàn)結(jié)果 ............................................................................................. 18 結(jié)果分析 ............................................................................................. 22 金屬纖維水泥漿增強(qiáng)機(jī)理的基本觀點(diǎn) ............................................. 22 無機(jī)纖維與金屬纖