這么高比例的透水地坪鋪設在廣場、人行道、園林景觀、公園道路,大型廣場展覽會館,度假村,校園等地面,可見其對城市建設的重要性。那么,如此不可多得的環保型功能地坪該如何施工呢?
1、鋪筑
彩色透水混凝土屬干性混凝土料,初凝快,攤鋪必須及時。對大面積施工應采用分塊隔倉方式進行攤鋪物料。用尺子找準平整度和控制一定的泛水度,采用人工進行攤鋪,盡可能做到攤鋪均勻,然后選擇壓路機碾壓。***遍碾壓結束后,對有明顯凹陷處及時人工換填補料,再進行碾壓。
2、整平
彩色透水混凝土對平整度要求較高,在混凝土壓實后,采用整平機對透水混凝土表面進行整平,對于局部無法收光的缺陷則配合人工抹刀修整,整平時保持接縫處表面平整。
3、養護
彩色透水混凝土地坪與普通混凝土地坪類似,當氣溫較高時,為減少水分的蒸發,采用塑料薄膜覆蓋養護,養護時間不少于14天,以保持水分。也可以采用灑水養護,所有養護期不得少于7天,使其在養護期內強度遂漸地提高。
4、切縫
混凝土養護14天后,采用切割機進行切縫施工,切縫完畢后用瀝青作為嵌縫材料嵌入切縫。
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.