混凝土無(wú)損檢測(cè)研究畢業(yè)論文

[摘要] 混凝土是我國(guó)建筑工程結(jié)構(gòu)中最主要的建筑材料?因此提高混凝土質(zhì)量檢測(cè)
水平和準(zhǔn)確性?對(duì)確保工程質(zhì)量有重大意義。無(wú)損檢測(cè)是通過(guò)混凝土非破損參數(shù)與混凝
土強(qiáng)度間的相關(guān)關(guān)系?建立測(cè)強(qiáng)曲線(xiàn)來(lái)推定現(xiàn)場(chǎng)混凝土的強(qiáng)度值。我國(guó)常用的無(wú)損檢測(cè)
方法有回彈法和超聲回彈綜合法兩種?本文就超聲回彈綜合法進(jìn)行了初步的研究。實(shí)驗(yàn)
采用南陽(yáng)地區(qū)常用的地方材料?配置C15混凝土試塊?然后按不同的齡期、分別用回彈
儀、超聲儀和壓力機(jī)對(duì)試塊進(jìn)行測(cè)試?經(jīng)計(jì)算得出相關(guān)試驗(yàn)數(shù)據(jù)。通過(guò)這些數(shù)據(jù)?結(jié)合
最小二乘法原理?采用幾種典型函數(shù)模型進(jìn)行擬合運(yùn)算。并對(duì)回歸方程的顯著性進(jìn)行檢
驗(yàn)?從而更準(zhǔn)確地評(píng)價(jià)混凝土強(qiáng)度。

[關(guān)鍵詞] 混凝土?無(wú)損檢測(cè)?超聲-回彈綜合法?數(shù)據(jù)處理

The Study of Non-Destructive Testing for C15 Concrete Civil Engineering Major
Abstract: Concrete is the most important material in the construction project .Improving
the level of concrete quality test and accuracy directly affects the security of construction and
ensures the quality of engineering. Using the non-destructive testing can build the strength
curve to infer on-site concrete strength by correlation of the concrete non-destructive
parameter and the concrete strength. In our country there are two common methods of
non-destructive test: rebound hammer method and the ultrasonic-rebound combined method.
By deep research in the ultrasonic-rebound combined method in this study. Using the
common materials in Nanyang ,we made C15 concrete samples. Rebound measure instrument,
ultrasonic measure instrument and compressive machine have been applied respectively to
determine the strength in different aging. Then relatively test data have been calculated. The
test data were obtained to regress several functions by least square method. The regression
equations qualities have been examined. By using the formula, the concrete strength could be
more accurately eva luated

Key Words: Concrete?Non-destructive testing?Ultrasonic-rebound combined method?
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目 錄
1 緒論 .................................................................... 1
1.1 引言 .............................................................. 1
1.2 混凝土無(wú)損檢測(cè)技術(shù)綜述 ............................................ 1
1.3 混凝土無(wú)損檢測(cè)國(guó)內(nèi)外研究現(xiàn)狀 ...................................... 1
1.4 混凝土無(wú)損檢測(cè)技術(shù)特點(diǎn) ............................................ 2
1.5 研究混凝土無(wú)損測(cè)強(qiáng)的目的和意義 .................................... 2
1.6 本課題研究的內(nèi)容方法及意義 ........................................ 3
2 混凝土強(qiáng)度的無(wú)損檢測(cè)理論 .............................................. 4
2.1 回彈法、超聲法概述 ................................................ 4
2.2 超聲回彈綜合法原理及影響因素 ...................................... 5
3 超聲—回彈綜合法的實(shí)驗(yàn)設(shè)計(jì)研究 ........................................ 8
3.1 實(shí)驗(yàn)方案 .......................................................... 8
3.2 初步配合比及材料用量 .............................................. 8
3.3 儀器的選用 ........................................................ 9
3.4 試塊的制作和養(yǎng)護(hù) .................................................. 9
3.5 試塊的測(cè)強(qiáng) ........................................................ 9
4 混凝土無(wú)損檢測(cè)數(shù)據(jù)處理和曲線(xiàn)回歸分析 ................................. 12
4.1 原始數(shù)據(jù)及處理方法 ............................................... 12
4.2 原始數(shù)據(jù) ......................................................... 12
4.3 回歸分析 ......................................................... 14
4.4 回歸結(jié)果的比較 ................................................... 21
4.5 測(cè)強(qiáng)曲線(xiàn)之間的比較 ............................................... 22
結(jié)束語(yǔ) ................................................................... 23
參考文獻(xiàn) ................................................................. 24
致謝 ..................................................................... 25