Coating (mix) with high modulus obtained by in situ heat recycling of the upper layers of a roadwayCoating, characterised in that, in order to constitute the added binder, a binder is used which is very hard and has a penetrability at 25 DEG C lying approximately between 5 and 30/10 of...
By deriving a propagation velocity of the wave by the arithmetic element 8, layer thickness and layer quality of a constitution layer of a surface base layer, a roadway subgrate, a roadbed, etc., of a road, etc. can be measured non-destructively and efficiently. 展开 ...
When analyzing a route database, it is sometimes useful to see what a route looked like at a given point in time and compare that to how it looks today. When the roadway changes shape, other aspects of the routes may also change. A state route that followed local roads for part of it...
While research on the convective cooling of the crushed-rock layer is fairly plentiful, the solar absorption of this layer remains unknown in the current stage. Measuring the albedo of a crushed-rock layer is crucial to estimate the thermal performance of the roadway embankment. This study ...
1. Strength characteristics with genesis and type of the sedimentary weak intercalated layers; 沉积型软弱夹层成因分类及强度特征2) soft interlayer 软弱夹层 1. On soft interlayer affecting roadway stabilization in roof 顶板中软弱夹层对巷道稳定性影响研究 2. The authors calculated the reaction spectra...
occurrence characteristics of coal seam, but also affects the distribution law of the gas flow field in coal in the process of roadway driving and gas drainage, it is necessary to work out effective gas extraction technical scheme according to the combination characteristics of soft and hard coal...
of the isolated layers of coal gangue piles through laboratory tests.The results show that the air permeation speed and permeability of soil samples increased in a quadratic function with time, and from the sixth day, the air permeation speed begins to exceed the critical seepage velocity,...
ablearrangementmethodisputforwardwhichissuitablefortheminingofLijiahaocoalseam groupandappropriateisolatingdistancebetweenupperroadwayandlowerroadwayisdetermined byusingtheresultsofnumericalsimulation�Theanalysisshowsthat : byanalyzingthecloudpicG tureofroadwaypressureinlowercoalseam , itisdeterminedthat12moutwarddistanc...
Pulverulent material for layers of the form of a roadway and method of producing.CHOUDIN CLAUDEFAGE JEAN-LOUISLETALENET JEAN-MARCRIEUNIER JEAN-BAPTISTE
The method involves dressing the surface part of roadway to obtain a milling off material, and preparing a mixture of sand and asphaltic emulsion. The mixture is then mixed with the milling off material to produce a coated material forming a new surface layer. The quantity of sand supplied ...