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一份完整C50空心板配合比 [复制链接]

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一份完整C50空心板配合比C50空心板砼配合比计算及说明Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
一、试验依据Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
1、《公路工程水泥及水泥混凝土试验规程》JTG E30—2005Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
2、《公路工程集料试验规程》JTG E42—2005Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
3、《普通混凝土配合比设计规程》JGJ55—2000Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
4、《公路桥涵施工技术规范》JTJ041—2000Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
二、设计要求Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
1、该砼配合比设计强度等级:C50,试配强度:59.9MpaÐð3+$¦!wƉbbs.3c3t.comkŒj(y1
2、坍落度设计要求:70—90mmÐð3+$¦!wƉbbs.3c3t.comkŒj(y1
3、该配合比设计单位重量:2452Kg/m3Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
4、该配合比拟用部位:预制空心板梁Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
三、原材料情况Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
1、砂:为江西石城砂场生产的粗砂。经试验检测该批砂各项指标均满足规范要求。具体指标如下:Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

表观密度(g/m3Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

堆积密度kg/m3Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

空隙率(%Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

含泥量(%Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

细度模数(MxÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

泥块含量(%Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2608Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1499Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

42.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1.4Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

3.30Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

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:Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

表观  密度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
kg/m3
Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

堆积  密度kg/m3Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

空隙 Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
%
Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

含泥  Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
%
Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

针、片状颗粒总含量Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
%
Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

泥块 含量 % Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

压碎 Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
%
Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

颗粒   级配Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

小于2.36㎜颗粒含量Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
%
Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2610Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1512Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

42.1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.3Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

4.2Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.0Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

6.8Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

4.75-26.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.2Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

3、水泥:为江西瑞金生产的“万年青”牌P·O42.5R水泥。经试验检测该批(DP4085 A)水泥各项指标均符合规范要求。具体指标如下:Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

细度 % Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

标准稠度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
用水量 %
Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

初凝时间MINÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

终凝时间MINÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

安定性Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

3天抗折强度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

28天抗折强度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

3天抗压强度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

28天压 折强度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2.8Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

27.0Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

140Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

212Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2.8Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

5.1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

7.4Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

28.0Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

47.3Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

4、水:饮用水。Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
5、外加剂为广州建宝新型建材有限公司生产的FDN-5B高效减水剂(粉末状颗粒),掺量为胶凝材料的1.4%。Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
四、配合比计算Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
初步配合比计算如下:Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
1、试配强度的计算:FC=50+1.645*6=59.9Mpa;Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
2、水灰比的计算:本配合比采用假定法进行选定W/C,0=0.32;Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
3、选定单位用水量:因设计坍落度为70-90则取W=191Kg/m3,但FDN-5B减水率为17%,W,0=191*(1-0.17)=159Kg/m3,,Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
4、计算单位水泥用量:C,0=W/(W/C)=497 Kg/m3;Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
5、根据经验确定砂率:SP=31%;Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
6、计算减水剂用量:497*0.014=6.958 Kg/m3;Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
7、计算砂、石用量MS0、MG0 (采用质量法)Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
假定砼密度为2452Kg/m3得:MS0=555Kg/m3,MG0=1234Kg/m3;Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
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。Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
基准配合比各原材料单位用量如下:Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
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%。Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
则相应的配合比各原材单位用量如下:Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

组号Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

水灰比Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

砂率Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

m3材料用量(㎏)Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

7天抗压强度MpaÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

28天抗压强度MpaÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

水泥Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

碎石4.75-26.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

碎石4.75-16Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

FDN-5BÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

AÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.32Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

31Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

497Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

555Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

926Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

308Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

155Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

6.958Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1109.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1248.1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1186.4Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1406.7Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1430.1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1353.7Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

49.3Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

55.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

52.7Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

62.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

63.6Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

60.2Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1.117Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1.863Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.620Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.32Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.014Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

52.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

62.1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

实测坍落度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

80Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

78Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

实测砼密度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2452Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2449Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

BÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.30Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

30Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

530Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

527Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

922Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

307Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

159Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

7.42Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1263.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1231.2Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1296.9Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1406.7Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1512.4Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1548.Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

56.2Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

54.7Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

57.6Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

62.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

67.2Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

68.8Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.994Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1.740Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.579Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.30Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.014Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

56.2Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

66.2Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

实测坍落度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

73Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

76Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

实测砼密度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2453Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2458Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

CÐð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.34Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

32Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

468Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

582Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

927Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

309Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

159Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

6.552Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1069.6Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1125.9Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1160.3Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1276.8Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1335.6Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1396.9Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

47.5Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

50.0Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

51.6Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

56.7Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

59.4Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

62.1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1.244Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

1.981Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.660Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.34Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

0.014Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

49.7Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

59.4Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

实测坍落度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

83Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

80Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

实测砼密度Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2452Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

2447Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1

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。Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
水泥:砂:碎石(4.75-26.5):碎石(4.75-19):水:FDN-5B=Ðð3+$¦!wƉbbs.3c3t.comkŒj(y1
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最后编辑3c3t 最后编辑于 2008-08-11 20:54:16
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