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透水地坪能否缓解城市“热岛现象”

发布时间:2021-01-31 08:43:00人气:313

1、透水地坪能吸收车辆行驶噪声,减少雨天路面积水和反光面积,缓解城市“热岛现象”,缓解地下水位急剧下降等生态环境,通过色彩搭配达到装饰效果。因此,它具有透气、透水、重量轻的特点,特别适合海绵城市建设。

2透水混凝土又称多孔混凝土、无砂混凝土、排水混凝土和透水地坪,是由集料、水泥和专用粘结剂加水配制而成的多孔轻质混凝土。它不含细骨科,而是在粗骨科表面覆盖一层薄薄的水泥浆,形成孔隙分布均匀的蜂窝状结构。因此,它具有透气、透水、重量轻的特点。针对原有城市道路的路面缺陷,研制了一种新型道路,能让雨水流入地下,有效补充地下水,有效消除地面油类化合物对环境污染的危害。同时,是保护自然、保持生态平衡、吸声降噪、缓解热岛效应的优良铺路材料。

3、透水地坪基础施工技术

根据施工现场条件,结合图纸及透水混凝土结构,开挖土方,放出边线桩,不同地段采用不同的施工方法。

路沟达到设计标高后,用平地机平整,刮出路拱,并预留压实量,然后用压路机压实。填筑压实作业采用重型振动压路机进行,采用先轻后重的方法,按填筑压实度标准进行压实。碾压前应检查确认填筑层厚度、平整度、含水量符合要求后方可碾压。压路机达不到的地方,采用小型压实机械压实,压实均匀,无死角。然后检查密实度,并进行级配砂、砾石施工。


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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