2、碎石:为淮土料场生产的4.75—26.5碎石。经试验检测该批碎石4.75-16mm占25%和4.75-26.5mm占75%各项指标均满足规范要求。具体指标如下:
8、经初步配合比按8升量进行试拌,该配合比的实测坍落度80mm、78mm,满足设计的70—90mm的设计要求,棍度和含砂情况为中等,保水性和粘聚性均良好。所以该初步配合比做为基准配合比。
水泥:砂:碎石(4.75-26.5):碎石(4.75-16):水:FDN-5B=497:555:926:308:159:6.958=1:1.117:1.863:0.620:0.32:0.014在基准配合比的基础上,保持用水量不变,水灰比各增加或减少0.02,砂率也相应各增加或减少1%,则对应的W/C=0.30,SP=30%和W/C=0.34,SP=32%。
组号.«Üï!Cbbs.3c3t.comпn£PØ | 水灰比.«Üï!Cbbs.3c3t.comпn£PØ | 砂率.«Üï!Cbbs.3c3t.comпn£PØ | 每m3材料用量(㎏).«Üï!Cbbs.3c3t.comпn£PØ | 7天抗压强度Mpa.«Üï!Cbbs.3c3t.comпn£PØ | 28天抗压强度Mpa.«Üï!Cbbs.3c3t.comпn£PØ |
水泥.«Üï!Cbbs.3c3t.comпn£PØ | 砂.«Üï!Cbbs.3c3t.comпn£PØ | 碎石4.75-26.5.«Üï!Cbbs.3c3t.comпn£PØ | 碎石4.75-16.«Üï!Cbbs.3c3t.comпn£PØ | 水.«Üï!Cbbs.3c3t.comпn£PØ | FDN-5B.«Üï!Cbbs.3c3t.comпn£PØ |
A.«Üï!Cbbs.3c3t.comпn£PØ | 0.32.«Üï!Cbbs.3c3t.comпn£PØ | 31.«Üï!Cbbs.3c3t.comпn£PØ | 497.«Üï!Cbbs.3c3t.comпn£PØ | 555.«Üï!Cbbs.3c3t.comпn£PØ | 926.«Üï!Cbbs.3c3t.comпn£PØ | 308.«Üï!Cbbs.3c3t.comпn£PØ | 155.«Üï!Cbbs.3c3t.comпn£PØ | 6.958.«Üï!Cbbs.3c3t.comпn£PØ | 1109.5.«Üï!Cbbs.3c3t.comпn£PØ | 1248.1.«Üï!Cbbs.3c3t.comпn£PØ | 1186.4.«Üï!Cbbs.3c3t.comпn£PØ | 1406.7.«Üï!Cbbs.3c3t.comпn£PØ | 1430.1.«Üï!Cbbs.3c3t.comпn£PØ | 1353.7.«Üï!Cbbs.3c3t.comпn£PØ |
49.3.«Üï!Cbbs.3c3t.comпn£PØ | 55.5.«Üï!Cbbs.3c3t.comпn£PØ | 52.7.«Üï!Cbbs.3c3t.comпn£PØ | 62.5.«Üï!Cbbs.3c3t.comпn£PØ | 63.6.«Üï!Cbbs.3c3t.comпn£PØ | 60.2.«Üï!Cbbs.3c3t.comпn£PØ |
1.«Üï!Cbbs.3c3t.comпn£PØ | 1.117.«Üï!Cbbs.3c3t.comпn£PØ | 1.863.«Üï!Cbbs.3c3t.comпn£PØ | 0.620.«Üï!Cbbs.3c3t.comпn£PØ | 0.32.«Üï!Cbbs.3c3t.comпn£PØ | 0.014.«Üï!Cbbs.3c3t.comпn£PØ | 52.5.«Üï!Cbbs.3c3t.comпn£PØ | 62.1.«Üï!Cbbs.3c3t.comпn£PØ |
实测坍落度.«Üï!Cbbs.3c3t.comпn£PØ | 80.«Üï!Cbbs.3c3t.comпn£PØ | 78.«Üï!Cbbs.3c3t.comпn£PØ | 实测砼密度.«Üï!Cbbs.3c3t.comпn£PØ | 2452.«Üï!Cbbs.3c3t.comпn£PØ | 2449.«Üï!Cbbs.3c3t.comпn£PØ |
B.«Üï!Cbbs.3c3t.comпn£PØ | 0.30.«Üï!Cbbs.3c3t.comпn£PØ | 30.«Üï!Cbbs.3c3t.comпn£PØ | 530.«Üï!Cbbs.3c3t.comпn£PØ | 527.«Üï!Cbbs.3c3t.comпn£PØ | 922.«Üï!Cbbs.3c3t.comпn£PØ | 307.«Üï!Cbbs.3c3t.comпn£PØ | 159.«Üï!Cbbs.3c3t.comпn£PØ | 7.42.«Üï!Cbbs.3c3t.comпn£PØ | 1263.5.«Üï!Cbbs.3c3t.comпn£PØ | 1231.2.«Üï!Cbbs.3c3t.comпn£PØ | 1296.9.«Üï!Cbbs.3c3t.comпn£PØ | 1406.7.«Üï!Cbbs.3c3t.comпn£PØ | 1512.4.«Üï!Cbbs.3c3t.comпn£PØ | 1548..«Üï!Cbbs.3c3t.comпn£PØ |
56.2.«Üï!Cbbs.3c3t.comпn£PØ | 54.7.«Üï!Cbbs.3c3t.comпn£PØ | 57.6.«Üï!Cbbs.3c3t.comпn£PØ | 62.5.«Üï!Cbbs.3c3t.comпn£PØ | 67.2.«Üï!Cbbs.3c3t.comпn£PØ | 68.8.«Üï!Cbbs.3c3t.comпn£PØ |
1.«Üï!Cbbs.3c3t.comпn£PØ | 0.994.«Üï!Cbbs.3c3t.comпn£PØ | 1.740.«Üï!Cbbs.3c3t.comпn£PØ | 0.579.«Üï!Cbbs.3c3t.comпn£PØ | 0.30.«Üï!Cbbs.3c3t.comпn£PØ | 0.014.«Üï!Cbbs.3c3t.comпn£PØ | 56.2.«Üï!Cbbs.3c3t.comпn£PØ | 66.2.«Üï!Cbbs.3c3t.comпn£PØ |
实测坍落度.«Üï!Cbbs.3c3t.comпn£PØ | 73.«Üï!Cbbs.3c3t.comпn£PØ | 76.«Üï!Cbbs.3c3t.comпn£PØ | 实测砼密度.«Üï!Cbbs.3c3t.comпn£PØ | 2453.«Üï!Cbbs.3c3t.comпn£PØ | 2458.«Üï!Cbbs.3c3t.comпn£PØ |
C.«Üï!Cbbs.3c3t.comпn£PØ | 0.34.«Üï!Cbbs.3c3t.comпn£PØ | 32.«Üï!Cbbs.3c3t.comпn£PØ | 468.«Üï!Cbbs.3c3t.comпn£PØ | 582.«Üï!Cbbs.3c3t.comпn£PØ | 927.«Üï!Cbbs.3c3t.comпn£PØ | 309.«Üï!Cbbs.3c3t.comпn£PØ | 159.«Üï!Cbbs.3c3t.comпn£PØ | 6.552.«Üï!Cbbs.3c3t.comпn£PØ | 1069.6.«Üï!Cbbs.3c3t.comпn£PØ | 1125.9.«Üï!Cbbs.3c3t.comпn£PØ | 1160.3.«Üï!Cbbs.3c3t.comпn£PØ | 1276.8.«Üï!Cbbs.3c3t.comпn£PØ | 1335.6.«Üï!Cbbs.3c3t.comпn£PØ | 1396.9.«Üï!Cbbs.3c3t.comпn£PØ |
47.5.«Üï!Cbbs.3c3t.comпn£PØ | 50.0.«Üï!Cbbs.3c3t.comпn£PØ | 51.6.«Üï!Cbbs.3c3t.comпn£PØ | 56.7.«Üï!Cbbs.3c3t.comпn£PØ | 59.4.«Üï!Cbbs.3c3t.comпn£PØ | 62.1.«Üï!Cbbs.3c3t.comпn£PØ |
1.«Üï!Cbbs.3c3t.comпn£PØ | 1.244.«Üï!Cbbs.3c3t.comпn£PØ | 1.981.«Üï!Cbbs.3c3t.comпn£PØ | 0.660.«Üï!Cbbs.3c3t.comпn£PØ | 0.34.«Üï!Cbbs.3c3t.comпn£PØ | 0.014.«Üï!Cbbs.3c3t.comпn£PØ | 49.7.«Üï!Cbbs.3c3t.comпn£PØ | 59.4.«Üï!Cbbs.3c3t.comпn£PØ |
实测坍落度.«Üï!Cbbs.3c3t.comпn£PØ | 83.«Üï!Cbbs.3c3t.comпn£PØ | 80.«Üï!Cbbs.3c3t.comпn£PØ | 实测砼密度.«Üï!Cbbs.3c3t.comпn£PØ | 2452.«Üï!Cbbs.3c3t.comпn£PØ | 2447.«Üï!Cbbs.3c3t.comпn£PØ |
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根据以上配合比试验结果分析,A组、B组配合比满足试配强度要求,但本配合比为室内配合比,砂及碎石的含水量为零,在现场施工中应实测现场砂及碎石的含水量,并根据砂及碎石的现场含水量换算为施工配合比。恳请试验监理工程师结合施工单位的施工水平以及施工现场的实际情况,选取A组或B组配合比指导现场施工,请贵办审批。