重量足夠,米數卻不夠 - 土木
By Olga
at 2016-11-04T15:12
at 2016-11-04T15:12
Table of Contents
※ 引述《zz8826319 (zzzzz)》之銘言:
: 混凝土以2350為設計單位重,
: 實測為2380,這樣米數是多還是少啊?
: 有專業人士可以解答嗎?
沒事來回一篇
混凝土"設計"單位重為2350"kg/m^3"
混凝土"實際"試驗單位重為2380"kg/m^3"
假設今天要知道1立方米(m^3)
的混凝土"重量",.到底是多少?
採用"設計"單位重計算時
混凝土的重量是
1m^3X2350kg/m^3=2350kg
採用"實際"單位重計算時
混凝土的重量是
1m^3X2380kg/m^3=2380kg
所以
設計重量2350kg
實際重量2380kg
設計與實際誤差值30kg
約((2380/2350)-1)x100=1.2765%
以此類推
不管是幾百立方米
或幾千立方米的混凝土都是這樣算
另外,補充說明一下,
單位重變重不代表體積增加
而是骨材或其他膠結材的密度有影響
--
: 混凝土以2350為設計單位重,
: 實測為2380,這樣米數是多還是少啊?
: 有專業人士可以解答嗎?
沒事來回一篇
混凝土"設計"單位重為2350"kg/m^3"
混凝土"實際"試驗單位重為2380"kg/m^3"
假設今天要知道1立方米(m^3)
的混凝土"重量",.到底是多少?
採用"設計"單位重計算時
混凝土的重量是
1m^3X2350kg/m^3=2350kg
採用"實際"單位重計算時
混凝土的重量是
1m^3X2380kg/m^3=2380kg
所以
設計重量2350kg
實際重量2380kg
設計與實際誤差值30kg
約((2380/2350)-1)x100=1.2765%
以此類推
不管是幾百立方米
或幾千立方米的混凝土都是這樣算
另外,補充說明一下,
單位重變重不代表體積增加
而是骨材或其他膠結材的密度有影響
--
Tags:
土木
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