Non-perforated closed water permeable manhole cover and manufacturing method thereof

Abstract

The invention provides a non-perforated closed water permeable manhole cover prepared from 65-75 parts by weight of crushed stone, 15-23 parts by weight of cement and 4-6 parts by weight of water. Preferably, the particle size of the crushed stone ranges from 0mm to 20mm, wherein measured by 100wt% of crushed stone, the particle size of 0wt% to 3wt% of crushed stone is less than 2.5mm; the particle size of 3wt% to 8wt% of crushed stone is greater than or equal to 2.5mm and less than 5mm; the particle size of 65wt% to 80wt% of crushed stone is greater than or equal to 5mm and less than 10mm; and the particle size of 15wt% to 25wt% of crushed stone is greater than or equal to 10mm and less than 20mm. Also, 0.5-2 parts by weight of water reducer and 3-8 parts by weight of enhancer are included. The non-perforated closed water permeable manhole cover in the invention is high in capability of anti-pressure and anti-crack, high in porosity, and good in permeability, so that the drainage efficacy of a drainage ditch can be developed better and safety of people can be ensured. Moreover, urban surface pollutants entering an urban drainage pipe network can be reduced. In addition, the manhole cover is ingenious in design, easily available in raw materials, simple and convenient to fabricate, low in cost, and suitable for large-scale popularization and use.

Description

technical field [0001] The invention relates to the technical field of road construction engineering, in particular to the technical field of cellar manhole covers, in particular to a non-porous closed water-permeable manhole cover and a manufacturing method thereof. Background technique [0002] There are many underground pipelines in urban construction, such as sewers, underground gas pipelines, water pipelines, power pipelines, communication pipelines, national defense pipelines, etc., and inspection well covers are usually arranged at the outlets of these pipelines. [0003] The pavement of traditional manhole covers emphasizes sturdiness, durability and practicability. Traditional manhole covers are usually provided with through holes. The initially relatively clean rainwater is mixed with a large amount of urban surface pollutants, and enters the natural water body through the urban pipe network, aggravating the pollution of groundwater sources and affecting the ecolog...

AI Technical Summary

Problems solved by technology

[0003] The pavement of traditional manhole covers emphasizes sturdiness, durability and practicability. Traditional manhole covers are usually provided with through holes. The initially relatively clean rainwater is mixed with a large amount of urban surface pollutants, and enters the natural water body through the urban pipe network, aggravating the pollution of groundwater sources and affecting the ecological balance of the city. At the same time, the traditional manhole cover is prone to residual surface water, which makes driving vehicles and pedestrians inconvenient in rainy days.