混凝土需要用水泥作胶凝材料,砂、石作集料,与水按一定比例配合,经搅拌、成型、养护才能形成,而混凝土按标准抗压强度划分的强度等级,称为标号,分为C10、C15、C20、C25等,C25混凝土配合比是多少呢?更多与混凝土、装修相关的资讯,请点击浏览一、c25混凝土配合比1、C25混凝土配合比水泥:水:砂:碎石372:175:593:12601:0.47:1.59:3.392、调整水灰比调整水灰比为0.42,用水量为175kg,水泥用量为Mco=175/0.42=417kg,按重量法计算砂、石用量分别为:Mso==579kg,Mgo=1229kg3、混凝土配合比的试配、调整与确定试用配合比1和2,分别进行试拌:配合比1:水泥:水:砂:碎石=372:175:593:1260=1:0.47:1.59:3.39;试拌材料用量为:水泥:水:砂:碎石=8.5:4.0:13.52:28.82kg;拌和后,坍落度为30mm,达到设计要求;配合比2:水泥:水:砂:碎石=417:175:579:1229=1:0.42:1.39:2.95试拌材料用量为:水泥:水:砂:碎石=9.6:4.03:13.34:28.42kg拌和后,坍落度仅20mm,达不到设计要求,故保持水灰比不变,增加水泥用量500g,增加拌和用水210g,再拌和后,坍落度达到35mm,符合设计要求。此时,实际各材料用量为:水泥:水:砂:碎石=10.1:4.24:13.34:28.42kg经强度检测(数据见试表),第1组、2组配合比强度均符合试配强度要求,综合经济效益,确定配合比为第1组,即:水泥:水:砂:碎石1:0.47:1.59:3.39372:175:593:1260kg/m3二、c25混凝土配合比表1、现浇碎石混凝土配合比(单位:立方米)定额编号12345项目C15C20C25C30C35碎石粒径16mm材料单位数量数量数量数量数量32.5Mpa水泥吨0.3070.4000.4600.53042.5Mpa水泥吨--------0.460中砂立方米0.5110.4110.3620.3480.36216mm石子立方米0.8300.8700.8790.8450.879水立方米0.2200.2200.2200.2200.220定额编号678910项目C40C45C15C20C25碎石粒径16mm碎石粒径20mm材料单位数量数量数量数量数量32.5Mpa水泥吨----0.2860.3720.42842.5Mpa水泥吨0.530--------52.5Mpa水泥吨--0.472------中砂立方米0.3480.3600.5070.4090.35916mm石子立方米0.8450.873------20mm石子立方米----0.8600.9030.914水立方米0.2200.2200.2000.2000.200定额编号11121314项目C30C35C40C45碎石粒径20mm材料单位数量数量数量数量32.5Mpa水泥吨0.493------42.5Mpa水泥吨--0.4280.493--52.5Mpa水泥吨------0.437中砂立方米0.3460.3590.3460.37020mm石子立方米0.8830.9140.8830.897水立方米0.2000.2000.2000.200定额编号1516171819项目C15C20C25C30C35碎石粒径31.5mm材料单位数量数量数量数量数量32.5Mpa水泥吨0.2710.3520.4060.467--42.5Mpa水泥吨--------0.406中砂立方米0.4990.4020.3530.3420.35331.5mm石子立方米0.8840.9300.9430.9130.943水立方米0.1900.1900.1900.1900.190定额编号2021222324项目C40C45C50C55C60碎石粒径31.5mm材料单位数量数量数量数量数量42.5Mpa水泥吨0.467--------52.5Mpa水泥吨--0.4150.456----62.5Mpa水泥吨------0.4150.444中砂立方米0.3420.3510.3440.3510.34631.5mm石子立方米0.9130.9390.9190.9390.924水立方米0.1900.1900.1900.1900.190定额编号2526272829项目C15C20C25C30C35碎石粒径40mm材料单位数量数量数量数量数量32.5Mpa水泥吨0.2600.3330.3840.442--42.5Mpa水泥吨--------0.384中砂立方米0.4910.3940.3460.3360.34640mm石子立方米0.9090.9580.9730.9430.973水立方米0.1800.1800.1800.1800.1802、预制碎石混凝土配合比(单位:立方米)定额编号12345项目C20C25C30C35C40碎石粒径16mm材料单位数量数量数量数量数量32.5Mpa水泥吨0.3810.4390.505----42.5Mpa水泥吨------0.4390.505中砂立方米0.4180.3690.3550.3690.35516mm石子立方米0.8830.8930.8620.8930.862水立方米0.2100.2100.2100.2100.210定额编号678910项目C45C50C20C25C30碎石粒径16mm碎石粒径20mm材料单位数量数量数量数量数量32.5Mpa水泥吨----0.3520.4060.46742.5Mpa水泥吨----------52.5Mpa水泥吨0.4480.493------中砂立方米0.3670.3580.4150.3650.35416mm石子立方米0.8890.867------20mm石子立方米----0.9160.9310.900水立方米0.2100.2100.1900.1900.190定额编号11121314项目C35C40C45C50碎石粒径20mm材料单位数量数量数量数量42.5Mpa水泥吨0.4060.467----52.5Mpa水泥吨----0.4150.456中砂立方米0.3650.3540.3640.35620mm石子立方米0.9310.9000.9260.906水立方米0.1900.1900.1900.190定额编号1516171819项目C20C25C30C35C40碎石粒径40mm材料单位数量数量数量数量数量32.5Mpa水泥吨0.3140.3620.416----42.5Mpa水泥吨------0.3620.416中砂立方米0.4000.3520.3420.3520.34240mm石子立方米0.9720.9890.9620.9890.962水立方米0.1700.1700.1700.1700.170定额编号2021项目C45C50碎石粒径40mm材料单位数量数量52.5Mpa水泥吨0.3710.406中砂立方米0.3510.34440mm石子立方米0.9850.967水立方米0.1700.1703、水下灌注碎石混凝土配合比(单位:立方米)定额编号12345项目C20C25C30C35C40碎石粒径31.5mm材料单位数量数量数量数量数量32.5Mpa水泥吨0.4410.501------42.5Mpa水泥吨----0.4110.501--52.5Mpa水泥吨--------0.469中砂立方米0.5450.5270.5440.5270.53631.5mm石子立方米0.6920.700.6910.700.682水立方米0.2340.2340.2340.2340.234