急！谁能提供一份道路路缘石C30的配合比 [复制链接]

路缘石普通C30砾石砼配合比设计说明书ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
使用部位：中央分隔带路缘石、中沟盖板、中沟集水井盖板ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
坍 落 度：30～50mm ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
材    料：中方县盛泰料场:中砂ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        中方县盛泰料场:5~31.5mmð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        水泥：金大地水泥有限公司 P.O32.5级ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
1）、确定试配强度，取δ=5.0Mpað%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        fch=fce+1.645δ =30+1.645×5.0Mpa=38.225 Mpað%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
2)、计算水灰比：ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        W/C=A×fce/(fcu.o+A×B×fce)  ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        =0.50×32.5×1.13/(38.225+0.50×0.61×32.5×1.13)ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        =18.36/49.43ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        =0.37取水灰比为0.43ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
3)、用水量取170kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
4)、水泥用量取W/C=0.43ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        CO=WO/（W/C）=170/0.43=395Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
5)、砂率取31%ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        假定砼湿表观密度为2350Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        则S砂=（2350-395-170）×0.31=553Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
      G碎石=2350-395-170-553=1232Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
6）、初步配合比为：C:S:G:W=395:553:1232:170ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
      =1:1.40:3.19:0.43ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
7)、试拌材料用量，每盘料取0.035m3ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
      C=395×0.035=13.8Kg             S=553×0.035=19.4Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
    G=1232×0.035=43.1Kg            W=170×0.035=6.0Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        8）、增加两组关联配合比，水灰比分别增加0.05和减少0.05,用水量不变,砂率不变。ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
9）、a1增加0.05则水灰比为0.48,用水量不变W1=170Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        C1=W/(W/C)=170/0.48=354Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        D1砂率不变  31%ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        假定砼湿表观密度为2350Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        则S1 =(2350-170-354)×0.31=566Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        G1 =2350-170-354-566=1260Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        配合比为C1:S1:G1:W1=354:566:1260:170ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
                =1:1.60:3.56:0.48ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
10)、试拌材料用量，每盘料取0.035m3ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
          C1=354×0.035=12.4Kg       S1=566×0.035=19.8Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        G1=1260×0.035=44.1Kg      W1=170×0.035=6.0Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
11)、a2减少0.05则水灰比为0.38用水量不变W2=170Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        C1=W/(W/C)=170/0.38=447Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        d砂率不变   31%ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        假定砼湿表观密度为2350Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
          则S2=(2350-170-447)×0.31=537Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        G2 =2350-170-447-537=1196Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        配合比为C2:S2:G2:W2 =447:537:1196:170ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
=1:1.20:2.68:0.38ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        试拌材料用量,每盘料取0.035m3ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        C2=447×0.035=15.6Kg          S2=537×0.035=18.8Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        G2=1196×0.035=41.9Kg          W2=170×0.035=6.0Kgð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
        待28天试配强度结果出来,再决定试验配合比。ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡
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选定水灰比、确定砂率、计算水泥用量、计算水用量、计算砂用量、计算石子用量，合计等2400ð%B’«L„2Òbbs.3c3t.comg˜4¾eZkf¬¡