樂陵回彈(dan)(dan)儀的基本原(yuan)理是用彈(dan)(dan)簧驅(qu)動重(zhong)錘,重(zhong)錘以恒定(ding)的動能(neng)(neng)(neng)撞(zhuang)擊(ji)與混凝(ning)土(tu)表面垂(chui)直(zhi)接觸(chu)的彈(dan)(dan)擊(ji)桿,使局部混凝(ning)土(tu)發生變形并吸收一部分(fen)能(neng)(neng)(neng)量(liang),另(ling)一部分(fen)能(neng)(neng)(neng)量(liang)轉化為重(zhong)錘的反(fan)彈(dan)(dan)動能(neng)(neng)(neng),當(dang)反(fan)彈(dan)(dan)動能(neng)(neng)(neng)全部轉化成(cheng)勢能(neng)(neng)(neng)時,重(zhong)錘反(fan)彈(dan)(dan)達到Z大距離,儀器將重(zhong)錘的Z大反(fan)彈(dan)(dan)距離以回彈(dan)(dan)值(Z大反(fan)彈(dan)(dan)距離與彈(dan)(dan)簧初始長(chang)度之比)的名義顯(xian)示出來(lai)。
符(fu)合(he)JGJ/T23-2011技術(shu)規程(cheng)的(de)M225型回(hui)彈(dan)儀(yi)用于檢測10-60Mpa范圍內的(de)砼抗(kang)壓強(qiang)度,系統(tong)標準能量為2.207J,示值(zhi)系統(tong)為指針直讀式的(de)中(zhong)型回(hui)彈(dan)儀(yi)并由國家計量檢定規程(cheng)《混凝土(tu)回(hui)彈(dan)儀(yi)》(JJG817-93)及行業標準《回(hui)彈(dan)法檢測混凝土(tu)抗(kang)壓強(qiang)度技術(shu)規程(cheng)》的(de)主(zhu)編單位-陜(shan)西省建筑科學研究設計院(yuan)監制。
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