A kind of sponge city ecological treatment road system and its construction method
An ecological treatment and sponge city technology, applied in the direction of roads, roads, side ditches/curbs, etc., can solve the problems of frequent maintenance, water permeability and strength of sponge city roads, etc., so as to improve water permeability, ensure strength, and improve stability sexual effect
Inactive Publication Date: 2020-06-16
HUBEI UNIV OF TECH
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Problems solved by technology
[0004] The invention provides a sponge city ecological treatment road system, which not only improves the water permeability of the road, but also ensures the strength and wear resistance of the road. Balance causing frequent upkeep issues
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[0044] The composition of the first / second permeable concrete layer 2 / 4 constitutes (kg / m 3 ): sludge dry powder 40~190, gravel 1250~1350, cement 200~350, water 100~150, slag 60~100, hydroxypropyl methylcellulose 2~10, dialuminum hydrogen phosphate 3~15, three Ethanolamine 0.1-1, amphiphilic polyurethane 3-15, hydroxymethylated alkali lignin 5-8, aminotriethanol 2-10, polyethylene glycol 2-10. The preparation method of the sludge dry powder is as follows: after the sludge is calcined at 300°C for 3 hours, ball milled to less than 1 mm, uniformly mixed with 5 mol / L phosphoric acid solution and the sludge, then dried at 150°C and ground to 25 ~ 30um. Amphiphilic polyurethane is formulated from polybutadiene:polyethylene glycol:toluene diisocyanate in a ratio of 1:8:0.5. The synthesis method of hydroxymethylated alkali lignin is a conventional synthesis method, and the specific steps are as follows: take lignin and dissolve it with 0.2mol / L NaOH solution and adjust the pH to 11...
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Abstract
The invention discloses a sponge urban ecological treatment road system. The system sequentially involves a base layer impervious concrete layer, a first water-permeable concrete layer, a sunflower-seed-shaped stone layer, a second water-permeable concrete layer and a water-permeable asphalt pavement layer from bottom to top, a steel bar net is arranged between the base layer impervious concrete layer and the first water-permeable concrete layer, gridding cloth is arranged above the steel bar net, drainage ditches are formed in the two sides of the surface of the base layer impervious concretelayer, a plurality of mutually-parallel micro-arch drainage grooves communicating the drainage ditches are formed in the middle of the the base layer impervious concrete layer, the drainage ditches communicate with a rainwater temporary storage chamber, the rainwater temporary storage chamber communicates with s water purification device, and the rainwater enters a reuse storage chamber after being purified by the water purification device. According to the road system, the road water permeability is improved, meanwhile, the strength and the wear resistance of the road are ensured, the road system is especially suitable for urban municipal roads, and effectively solves the problem that maintenance is frequent due to the fact that the water permeability and the strength of the sponge urbanroads are difficult to balance.
Description
technical field [0001] The invention belongs to the technical field of roads, and relates to a sponge city ecological treatment road system and a construction method thereof. Background technique [0002] At present, most of the urban roads are made of asphalt concrete, and the impermeability and impermeability of the asphalt concrete pavement directly lead to the moisture and precipitation in the air not directly entering the soil through the concrete pavement, which directly leads to the deterioration of surface plants. Unhealthy growth or withering and death due to lack of moisture makes it difficult for air moisture and heat to circulate virtuously with the surface, resulting in an increase in surface temperature and the "heat island effect". The most important thing is that the impermeability and air-tightness of the concrete pavement make it difficult to drain the pavement during the rainy season. We can only rely on drainage facilities. Comfort, increases the risk of...
Claims
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IPC IPC(8): E01C7/32E01C11/22C04B28/00
CPCC04B28/00E01C7/32E01C11/226C04B14/06C04B14/02C04B24/2623C04B24/08C04B18/12C04B14/104C04B2103/0057C04B24/383C04B2103/302C04B14/4656Y02A30/60
Inventor 张杰康乾昌王景芸
Owner HUBEI UNIV OF TECH