feng8777 - 2007/11/20 20:24:00
抗折强度Rf按下式计算：ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.Rf =ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá. ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
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1.5FfLó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá. ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
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b3ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá. ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
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式中：Rf —抗折强度(Mpa)；ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.Ff —折断时施加于棱柱体中部的荷载(N)；ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.L —支撑圆柱之间的距离(mm)；ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.b —棱柱体正方形截面的边长(mm)。ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.关于L和b是多少?ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.抗压强度Rc按下式计算ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
Rc =ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá. ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
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Aó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá. ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
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式中：Rc—抗压强度(Mpa)；ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
Fc—破坏时的最大荷载(N)；ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
A—受压部分面积(mm2)。ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
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关于A是多少?ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
是2.5还是1.6?ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
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雨清 - 2007/11/20 22:09:00
关于L和b是多少?L=100mm b=40mmó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
关于A是多少?A=1600mm2ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
jntl - 2007/11/22 14:58:00
一般抗折直接读出来的，抗压经过换算的，面积是1600mm2ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
hbt1130 - 2008/6/12 9:59:00
:default6:ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
杨飞 - 2008/7/10 19:45:00
学习ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
liuyuanhua - 2010/12/20 22:24:00
一看就知道是新手，呵呵ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
jt19900928 - 2011/4/14 15:15:00
L=100mm b=40mmó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
A=1600mm2 ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.
JTG E30-2007中《水泥胶砂强度试验》里公式下都有标注ó£© ÖwÒdMìbbs.3c3t.comç ¬ËHá.