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名称:保定市玉通模具制造荣鼎彩技巧

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地址:河北省保定市清苑区闫庄工业区

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生态护坡构件自密实混凝土配合比及性能测试
1.原材料与配合比
1. raw materials and mixture ratio
所用水泥为普通硅酸盐水泥(P·O 42.5),矿物掺合料为Ⅰ级粉煤灰、S105级矿渣粉。采用具有增粘、保坍、低收缩、低引气性能的高效减水剂,减水率在25%以上。粗骨料为最大粒径16mm、针片状含量不超过8%、级配良好的碎石;细骨料为含泥量不超过3.0%、细度模数为2.6左右的河砂。
The cement used is ordinary Portland cement (P. O 42.5), and the mineral admixture is grade I fly ash and grade S105 slag powder. The superplasticizer with high viscosity, slump retention, low shrinkage and low air entrainment is used, and the water reduction rate is more than 25%. The coarse aggregate is the crushed stone with the maximum diameter of 16mm, the content of needle flake is not more than 8%, and the fine aggregate is the river sand with the slime content not more than 3.0% and the fineness modulus about 2.6.
生态护坡构件混凝土强度等级为C40,水胶比小于0.42,胶凝材料总量控制在450~550kg/m3,用水量小于190kg/m3,为避免脱模时间延迟及粘模现象,掺合料掺量控制在25%以内。
The concrete strength grade of ecological slope protection component is C40, the water-binder ratio is less than 0.42, the total amount of cementitious material is controlled at 450-550 kg/m3, and the water consumption is less than 190 kg/m3. In order to avoid the delay of demoulding time and the phenomenon of adhesive mold, the admixture content is controlled within 25%.
2.自密实混凝土的工作性能测试
2. performance test of self compacting concrete
自密实混凝土工作性试验方法参照JGJ/T283-2012进行。混凝土拌合物的坍落扩展度控制在650mm以上,T50数值2~5s;V漏斗通过时间小于10s,U型箱高度差小于20mm,含气量小于2.0%。
The workability test method of self compacting concrete is carried out with reference to JGJ/T283-2012.yinshuanji.89ix.com fangshuiji.89ix.com guntong.89ix.com dianlancaom.75ix.comgougaibanm.75ix.commaluyazi.75ix.com The slump expansion of concrete mixture is controlled above 650mm, T50 value is 2-5s, V funnel passing time is less than 10s, U box height difference is less than 20mm, and air content is less than 2.0%.
脱模后的构件要求表面平整美观,侧面气泡半径在2~4mm的气泡数量少于10个/单面,半径大于4mm的气泡数量少于5/单面,且蜂窝、麻面面积超过单面面积0.8%;仿石面与侧面均不出现影响外观的色泽度偏差。构件结构以及主要受力部位未受损,两侧同心圆挖空处无裂缝。
After demoulding, the surface of the component should be smooth and beautiful, the number of bubbles with radius of 2-4 mm on the side should be less than 10/one side, the number of bubbles with radius of more than 4 mm on the side should be less than 5/one side, and the area of honeycomb and hemp should be more than 0.8% of the area on the one side. The component structure and main stress parts are not damaged, and there is no crack on the two sides concentric circle.

联系方式

  1. 名称:保定市玉通模具制造荣鼎彩技巧
  2. 电话:0312-8103052
  3. 手机:13303126569
  4. 微信:13303126569
  5. 邮箱:541192408@qq.com
  6. 地址:河北省保定市清苑区闫庄工业区

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