摘要:
PROBLEM TO BE SOLVED: To provide a filler for construction producible by using yet-to-be-concentrated sludge water.SOLUTION: The provided filler for construction includes, together with a solidification material and a fine powder included as an additive admixture, sludge water obtained by separating sand and gravel from a washing effluent of a concrete handling facility. Figure 2 shows a state where a structure 14 has been built at a site slightly separated from the slope 12 of a mountain 10. The filler 18 is pumped by a pump vehicle 20 between the slope 12 and the structure. The pump vehicle is stopped at an appropriate position near the structure, and the filler is transported by installing a pipeline 22 ranging from the pump discharge port to an intermediate site between the slope and the structure and then operating the pump.
摘要:
Method and device for ensuring high yields during spraying of a settable slurry composition. The slurry is conveyed through a length of hose to a nozzle spray-orifice, and a set accelerator is introduced into the slurry at a distance “D” from the nozzle spray-orifice. The level of accelerator is monitored using a sensor located in the slurry path at a point after the set accelerator is injected. A preferred sensor comprises two pairs of conductivity sensors each having an annular body with a bore corresponding to the diameter of the hose or nozzle bore. Voltage of the slurry can be correlated to yields obtained when a salt-based accelerator fluid is injected into the slurry, such that levels of accelerator can be finely adjusted, and consistently high yields of spray coatings can be achieved.
摘要:
PROBLEM TO BE SOLVED: To provide a method for insolubilizing lead contained in waste solidified fuel, woody biomass fuel, and sludge solidified fuel that exhibit high alkalinity since alkaline chemicals are added in a production process of fuels or a combustion process thereof. SOLUTION: The technology that complies with a soil environmental quality standard by selecting one kind or two kinds or more from ferrous chloride, ferric chloride, ferrous sulfate, and ferric sulfate out of iron salts and mixing them in an addition amount of 0.2 to 0.001%, wherein the produced materials may be utilized as the roadbed and landfill material of roads by using them together with binder materials such as cement of high alkalinity is provided. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To reduce the dissolved amount of hexavalent chromium, improve sliding resistance, and develop sufficient water retainability in a water holding pavement. SOLUTION: This cement composition is poured, in the form of cement milk, into cavities of an open-graded asphalt pavement or a porous concrete pavement. The cement composition comprises a cement, a blast furnace slag fine powder, a ferrous sulfate, a water holding material, and a rubber powder. The cement milk is poured into the cavities of the asphalt pavement or the concrete pavement, and then cured. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To reduce the eluting amount of hexavalent chromium when cement milk with a high water-powder ratio is used, and generate a sufficient water retentivity while reducing the eluting amount of hexavalent chromium when the cement milk is used for water retention such as water retentive pavement. SOLUTION: The cement composition contains cement, fine powder of blast-furnace slag, ferrous sulfate, and zeolite. Preferably, the zeolite of 50-160 pts.wt. is mixed vs. the cement of 100 pts.wt. COPYRIGHT: (C)2007,JPO&INPIT