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        透水地坪能否緩解城市“熱島現象”

        發布時間:2021-01-31 08:43:00人氣:1030

        1、透水地坪能吸收車輛行駛噪聲,減少雨天路面積水和反光面積,緩解城市“熱島現象”,緩解地下水位急劇下降等生態環境,通過色彩搭配達到裝飾效果。因此,它具有透氣、透水、重量輕的特點,特別適合海綿城市建設。

        2、透水混凝土又稱多孔混凝土、無砂混凝土、排水混凝土和透水地坪,是由集料、水泥和專用粘結劑加水配制而成的多孔輕質混凝土。它不含細骨科,而是在粗骨科表面覆蓋一層薄薄的水泥漿,形成孔隙分布均勻的蜂窩狀結構。因此,它具有透氣、透水、重量輕的特點。針對原有城市道路的路面缺陷,研制了一種新型道路,能讓雨水流入地下,有效補充地下水,有效消除地面油類化合物對環境污染的危害。同時,是保護自然、保持生態平衡、吸聲降噪、緩解熱島效應的優良鋪路材料。

        3、透水地坪基礎施工技術

        根據施工現場條件,結合圖紙及透水混凝土結構,開挖土方,放出邊線樁,不同地段采用不同的施工方法。

        路溝達到設計標高后,用平地機平整,刮出路拱,并預留壓實量,然后用壓路機壓實。填筑壓實作業采用重型振動壓路機進行,采用先輕后重的方法,按填筑壓實度標準進行壓實。碾壓前應檢查確認填筑層厚度、平整度、含水量符合要求后方可碾壓。壓路機達不到的地方,采用小型壓實機械壓實,壓實均勻,無死角。然后檢查密實度,并進行級配砂、礫石施工。


        1、Pervious floor can absorb the noise of vehicle driving, reduce the area of road water and reflection in rainy days, alleviate the urban "heat island phenomenon", alleviate the ecological environment such as the sharp drop of groundwater level, and achieve decorative effect through color matching. Therefore, it has the characteristics of air permeability, water permeability and light weight, especially suitable for sponge city construction.
          2、Permeable concrete, also known as porous concrete, non sand concrete, drainage concrete and permeable floor, is a kind of porous lightweight concrete made of aggregate, cement and special binder by adding water. It does not contain fine orthopedics, but is covered by a thin layer of cement slurry on the surface of coarse orthopedics, which forms a honeycomb structure with evenly distributed pores. Therefore, it has air permeability, water permeability and light weight The characteristics of the system. Aiming at the pavement defects of the original urban roads, a new type of road is developed, which can let rainwater flow into the ground, effectively supplement the groundwater, and effectively eliminate the harm of oil compounds on the ground to environmental pollution. At the same time, it is an excellent paving material to protect nature, maintain ecological balance, absorb sound and reduce noise, and alleviate heat island effect.
          3、Construction technology of permeable floor foundation
          According to the conditions of the construction site, combined with the drawings and the structure of permeable concrete, the earthwork is excavated, the side line pile is set out, and different construction methods are adopted for different sections.
          After the road trench reaches the design elevation, it shall be leveled with a grader, scraped out of the road arch, and the compaction amount shall be reserved, and then compacted with a roller. The filling compaction operation shall be carried out with a heavy vibratory roller, and the method of light compaction first and heavy compaction later shall be adopted, and the compaction shall be carried out according to the filling compaction compactness standard. Before compaction, check and confirm that the thickness, flatness and water content of the filling layer meet the requirements before rolling. Where the roller can not reach, the small compaction machinery shall be used for compaction, so as to achieve even compaction and no dead corner. Then, the compactness shall be checked, and the graded sand and gravel shall be constructed.


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