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谁知道混凝土的种类和方程式?。。。。请大家帮帮忙
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发表于 23-8-2006 08:46 PM
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发表于 28-9-2006 02:27 AM
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发表于 28-9-2006 10:25 PM
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应该是concrete吧。。。
这里有一个很好的网站
请按我 |
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发表于 10-11-2006 08:08 PM
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发表于 10-11-2006 10:06 PM
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传统上,
concrete = (cement + water) + (sand + gravel) = (cement paste) + aggregate
the term aggregate refers to the combination of sand(fine aggregate) and gravel or stone(coarse aggregate)
cement的种类根据AS 3972 - the standard for portland and blended cements
有两种普通用途的cements,那就是types GP 和 GB。
另外还有两种特别用途的cements,那就是types LH 和 HE。
GP = portland cement
GB = a blend of cement with slag or fly ash
LH = low-heat cement
HE = high early strength cement |
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发表于 10-11-2006 11:01 PM
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原帖由 假厉害 于 10-11-2006 10:06 PM 发表
传统上,
concrete = (cement + water) + (sand + gravel) = (cement paste) + aggregate
the term aggregate refers to the combination of sand(fine aggregate) and gravel or stone(coarse aggregate) ...
GP = portland cement
GB = a blend of cement with slag or fly ash
LH = low-heat cement
HE = high early strength cement
通常在新马一带
用哪种? |
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发表于 11-11-2006 12:19 AM
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原帖由 超级赛亚人 于 10-11-2006 11:01 PM 发表
GP = portland cement
GB = a blend of cement with slag or fly ash
LH = low-heat cement
HE = high early strength cement
通常在新马一带
用哪种?
GP |
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发表于 26-11-2006 03:31 AM
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如果refer to ACI code:
portland cement有五种:
I : all purpose cement
II : comparatively low heat liberation;used in large structures
III : high strength in 3 days
IV : Used in mass concrete dams
V : Used in sewers and structure exposed to sulfates
Component Rate of reaction Heat liberated Ultimate cementing value
Tricalcium silicate, C3S Medium Medium Good
Dicalcium silicate, C2S Slow Small Good
Tricalcium aluminate, C3A Fast Large Poor
Tetracalium aluminoferrate, C4AF Slow Small Poor
[ 本帖最后由 假厉害 于 26-11-2006 03:33 AM 编辑 ] |
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