【正文】 石家莊鐵道大學(xué)畢業(yè)論文 石家莊鐵道大學(xué)畢業(yè)論文 骨料表面處理對(duì)水泥基材料性能的影響 Effect of the aggregate surface treatment on the properties of cement based material 2022 屆 材料科學(xué)與工程 學(xué)院（系） 專 業(yè) 無機(jī)非金屬材料工程 學(xué) 號(hào) 學(xué)生姓名 指導(dǎo)教師 完成日期 2022 年 6 月 日 石家莊鐵道大學(xué)畢業(yè)論文 摘 要 本文研究了使用酸堿對(duì)砂漿骨料表面預(yù)處理對(duì)砂漿強(qiáng)度的影響，化學(xué)預(yù)處理主要目的在于改變骨料表換粗糙度和活性，通過改變化學(xué)藥品處理的時(shí)間的不同，通過對(duì)比不同藥劑、時(shí)間處理后的砂漿試件的強(qiáng)度來觀察并研究其中的機(jī)理，本文主要做了一下工作： (1)砂漿配合比的設(shè)計(jì)工作，根據(jù)實(shí)驗(yàn)所需要和實(shí)驗(yàn)性質(zhì)，研究化學(xué)預(yù)處理對(duì)于砂漿強(qiáng)度的影響不宜與使用高強(qiáng)砂漿，所以本文設(shè)計(jì)了 、 M5 和 三種的強(qiáng)度，實(shí)驗(yàn)配合比嚴(yán)格按照國標(biāo)設(shè)計(jì)，設(shè)計(jì)目的在于突出表現(xiàn)出化學(xué) 藥品處理過的砂漿骨料對(duì)于強(qiáng)度的影響。 (2)使用質(zhì)量分?jǐn)?shù)為 10%的氟化銨和氫氧化鈉分別處理河砂，以處理 15min 和45min 為兩種控制方式，考察處理后的強(qiáng)度變化；處理時(shí)要特別注意時(shí)間的控制和處理結(jié)束后對(duì)于河砂的沖洗處理，要求不能存在殘留的酸或堿，否則會(huì)對(duì)實(shí)驗(yàn)結(jié)果造成干擾，影響實(shí)驗(yàn)的準(zhǔn)確性。 (3)研究發(fā)現(xiàn)經(jīng)過氟化銨處理的骨料所制作的試件的強(qiáng)度對(duì)比空白試件來說，處理時(shí)間越短的分組強(qiáng)度降低程度越大，例如氟化銨處理 15min 的試件強(qiáng)度平均降低%，而氟化銨處理 45min 的試件平均降低 19%左右；氫氧化鈉處理 的骨料所制作的試件的強(qiáng)度對(duì)比空白試驗(yàn)試件來說，處理時(shí)間越長的分組強(qiáng)度降低越大，例如氫氧化鈉處理 15min 的試件強(qiáng)度平均降低 16%左右，而氫氧化鈉處理 45min 的試件強(qiáng)度平均降低 %左右。 關(guān)鍵詞： 配合比設(shè)計(jì) 化學(xué)預(yù)處理 強(qiáng)度變化 石家莊鐵道大學(xué)畢業(yè)論文 Abstract This paper studies the effect of the use of acid and alkali on mortar surface pre treatment of aggregate on strength of mortar,The main purpose of chemical pretreatment is to change the roughness and activity of the aggregate surface,We chang the chemical treatment of different duration to observe and study the mechanism of the different duration and different agents by paring of the specimen paper has done the following work: (1)The work of designing mix ratio of to the need of the experiment and the experiment nature,we hnow that studys on chemical pretreatment effect on the strength of mortar should not use high strength mortar,so I design three kinds of intensity:,M5 and I design experiment according to the national standard strictly,The design aims to show the effect of chemical processing of the aggregate the on the strength of mortar. (2)We deal river sand with ammonium fluoride and sodium hydroxide which quality scores is 10% ,In order to investigate the changs of the strength,we deal the aggregate with 15min and should be paid special attention processing time and the flushing of river sand when the experiment end,it request that there should not be remaining acid or ,it will cause interference to the experimental results and effect the accuracy of the experimental. (3)Comparing the testpiece treated by ammonium fluoride to the blank,we find that the strength of mortar decreasing more which packet processing time is short,for example, the strength of the testpiece treated by ammonium fluoride in 15min reduce by an average of %,but specimens treated by the ammonium fluorid in 45min reduce by an average of about 19%。the strength of mortar decreasing more which packet processing time is long,for example,the strength of the testpiece treated by sodium hydroxide in 15min reduce by an average of 16%,but specimens treated by the sodium hydroxide in 45min reduce by an average of about %. Key word： design of mix proportion Chemical pretreatment change of strength 石家莊鐵道大學(xué)畢業(yè)論文 目 錄 第 1 章 緒論 ............................................................................................................... 1 界面過渡區(qū)對(duì)水泥基材料的影響 ................................................................ 1 國內(nèi)外界面過渡區(qū)的研究現(xiàn)狀和前景 ..................................................... 2 國內(nèi)外現(xiàn)狀 ..................................................................................... 2 界面過渡區(qū)研 究的發(fā)展前景 ......................................................... 2 本論文的研究內(nèi)容 ...................................................................................... 3 第 2 章 砂漿界面過渡區(qū)對(duì)水泥基材料影響的研究分析 ....................................... 4 界面過渡區(qū)的形成機(jī)理 ............................................................................. 4 骨料表面的處理方法舉例 ......................................................................... 4 第 3 章 實(shí)驗(yàn)材料及實(shí)驗(yàn)方法 ................................................................................... 6 砂的含水率試驗(yàn)（標(biāo)準(zhǔn)法） ..................................................................... 6 砂的含泥量的檢測(cè)試驗(yàn) ............................................................................. 6 含泥量試驗(yàn) ..................................................................................... 6 泥塊含量試驗(yàn) ................................................................................. 7 水泥的檢測(cè)指標(biāo) ......................................................................................... 7 水泥凝結(jié)時(shí)間的測(cè)定 ..................................................................... 7 砂漿配合比的設(shè)計(jì) ..................................................................................... 8 確定 砂漿的試配強(qiáng)度 ........................................................... 8 確定 M5 砂漿的試配強(qiáng)度 ............................................................... 8 確定 砂漿的試配強(qiáng)度 ........................................................... 9 砂漿稠度試驗(yàn) ............................................................................................. 9 實(shí)驗(yàn)材料及方法 ....................................................................................... 10 原材料 ........................................................................................... 10 實(shí)驗(yàn)方法 ......................................................................................... 11 第 4 章 實(shí)驗(yàn)結(jié)果及分析 ......................................................................................... 16 第 5 章 總結(jié)與展望 ................................................................................................. 17 總結(jié) ........................................................................................................... 17 展望 ........................................................................................................... 17 參考文獻(xiàn) .............................................................