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Application of resonant crushing technology in cement pavement reconstruction
With the development of road traffic construction, the speed of road traffic load is getting faster and faster, and the wear and tear of roads is increasing. Especially for cement concrete pavement, under natural conditions and increased loads, cracks, misaligned slabs and broken slabs can easily appear, thus leading to a decline in the level of road service.
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The confusion and countermeasures faced by road mechanized maintenance center
In formulating the planning of the scale of mechanized maintenance center, it is necessary to start from adapting to the needs of economic and social development, adapting to the trends and requirements of future socio-economic development, breaking the administrative boundaries of small regions, breaking maintenance boundaries, reasonably determining the radiation radius of the maintenance center, of which large to maintain highways and one or two highways, maintenance mileage above 300km, covers an area of about 30 acres, building scale 1500m2, accessory facilities 200m2, machinery and equipment supporting 10 million yuan; medium-sized to maintain trunk highways and county highways of high secondary pavement, maintenance mileage in more than 200km, covers an area of about 20 acres, building scale of 1000m2, accessory facilities 150m2, machinery and equipment supporting 5 million yuan; small to maintain trunk highways, maintenance mileage in 100km above, covers an area of about 10 acres, building scale 500m2, ancillary facilities 100m2, machinery and equipment supporting 3 million yuan.
Pre-treatment matters before the construction of petrochemical crushing
Crushed petrochemical surface particles are small in size and are compacted by a roller to form a certain strength. After rolling, the particles are compacted to form a thin layer of mutual embedding, and the structural stability is ensured by spreading permeable oil. The upper strength comes from the internal friction angle, and the precompression stress is also a key factor affecting the upper strength. In cement panel crushing, the larger the particle size formed after crushing, the larger the internal friction angle. At the same time, the volume of concrete in the crushing process expands, and the smaller the particle size after crushing, the larger the tendency of expansion formed, and the larger the precompressive stress generated.
Rural Road Construction Management Measures (Ministry of Transport of the People's Republic of China Order No. 4 of 2018)
The "Rural Road Construction Management Measures" was adopted by the 25th Ministerial Meeting on December 27, 2017, and agreed by the Ministry of Finance, and is hereby published. It shall come into force from June 1, 2018.
Application of resonant petrochemical crushing in cement bridge engineering
Since the 1990s, China's concrete plaster has developed rapidly due to the high strength and long design time of concrete. With the year by year improvement of traffic performance, more and more old cement plaster is under construction, the pre-concrete plaster should be the rapid growth of China's economy in recent decades, the traffic volume and axle load increased year by year, various structural forms are also increasing. l Old concrete pavement also occurred damage, causing serious damage, at the same time, the burden of dust on the injured citizens is high, not conducive to environmental protection.
Transformation technology and construction plan of crushed petrochemicals
Today's high quality manufacturers to explain to you the relevant knowledge points of petrochemical crushing.
How to safely operate small asphalt mixing equipment
1、Small asphalt mixing equipment should be set on a level ground, with square wood to the front and rear axle pad, fixed overhead tires, to prevent the use of sliding phenomenon.
Daily maintenance and regular maintenance of asphalt mixing plant
Asphalt mixing plant as an important production equipment for building construction, its production input is relatively high, so in the use of the process, production is important, but the daily maintenance also seems vital, in addition to regular maintenance, daily maintenance is indispensable, Huatong asphalt mixing plant of the editor to share a few points of daily maintenance and regular maintenance;.