这么高比例的透水地坪铺设在广场、人行道、园林景观、公园道路,大型广场展览会馆,度假村,校园等地面,可见其对城市建设的重要性。那么,如此不可多得的环保型功能地坪该如何施工呢?
1、铺筑
彩色透水混凝土属干性混凝土料,初凝快,摊铺必须及时。对大面积施工应采用分块隔仓方式进行摊铺物料。用尺子找准平整度和控制一定的泛水度,采用人工进行摊铺,尽可能做到摊铺均匀,然后选择压路机碾压。***遍碾压结束后,对有明显凹陷处及时人工换填补料,再进行碾压。
2、整平
彩色透水混凝土对平整度要求较高,在混凝土压实后,采用整平机对透水混凝土表面进行整平,对于局部无法收光的缺陷则配合人工抹刀修整,整平时保持接缝处表面平整。
3、养护
彩色透水混凝土地坪与普通混凝土地坪类似,当气温较高时,为减少水分的蒸发,采用塑料薄膜覆盖养护,养护时间不少于14天,以保持水分。也可以采用洒水养护,所有养护期不得少于7天,使其在养护期内强度遂渐地提高。
4、切缝
混凝土养护14天后,采用切割机进行切缝施工,切缝完毕后用沥青作为嵌缝材料嵌入切缝。
Such a high proportion of permeable ground is laid in the square, sidewalk, garden landscape, park road, large-scale plaza exhibition hall, resort, campus and other ground, which shows its importance to urban construction.So, how should such a rare environmental function floor construction?
1, paving
Color pervious concrete is a dry concrete material, early setting fast, paving must be timely.For large area construction, the material should be spread by dividing into blocks and compartments.With the ruler to find the flatness and control a certain degree of flooding, using manual paving, as far as possible to achieve uniform paving, and then choose a roller rolling.*** after the end of the rolling, there is a significant depression in time to manually replace the filling material, and then rolling.
2, leveling
Color pervious concrete has a high requirement for flatness. After compaction of concrete, the surface of pervious concrete is leveled by a levelling machine. For defects that cannot be partially polished, artificial spatula is used to repair and keep the surface of joints flat.
3, maintenance,
The colored pervious concrete floor is similar to the ordinary concrete floor. In order to reduce the evaporation of water when the temperature is high, plastic film is used for curing, and the curing time is not less than 14 days to retain water.Sprinkling water can also be used for curing, all the curing period shall not be less than 7 days, so that the strength gradually increases within the curing period.
4, cut seam
After 14 days of concrete curing, a cutting machine is used to carry out the construction of cutting joints. After the completion of cutting, asphalt is used as the material for embedding the joints.