METHOD FOR LAYER-BY-LAYER DEPOSITION OF CONCRETE

    公开(公告)号:US20230146602A1

    公开(公告)日:2023-05-11

    申请号:US17920413

    申请日:2021-04-22

    申请人: Universiteit Gent

    摘要: The invention relates to a method for layer-by-layer deposition of concrete by providing extrudable concrete. A first flow comprising a binder material and water and a second flow comprising a carrier material, an additional component and water are mixed in a static mixer to form a third flow of extrudable concrete. The material of the second flow has a shorter initial setting time than the material of the first flow. The first flow has a first viscosity V1 and the second flow has a second viscosity V2 so that the ratio V1/V2 ranges between 1/40 and 40. The third flow has a viscosity larger than the viscosity of the first flow and the second flow and a yield stress larger than the yield stress of the first flow and the second flow. The material of the third flow has an initial setting time shorter than initial setting time of the first flow.
    The invention further relates to a system to extrude concrete, in particular for layer-by-layer deposition of concrete.

    Volumetric concrete mixing system, equipment, and method

    公开(公告)号:US11173630B1

    公开(公告)日:2021-11-16

    申请号:US16559987

    申请日:2019-09-04

    摘要: A mobile volumetric concrete mixing system includes a suction system that vacuums up trench spoils while a trench is being cut. These trench spoils are then screened on-site for particle size to be reused and mixed with water, cement, and/or other admixtures at an auger mixer to form a backfill mixture. This backfill mixture may then be loaded into a hopper that continuously agitates the mixture so that the mixture does not harden before pouring. The agitating hopper is coupled to a discharge chute of the auger mixer and includes one or more augers disposed at various orientations that the backfill mixture is channeled through. From the agitating hopper, the backfill mixture is channeled to an applicator that moves along the trench and that enables the mixture to be quickly poured into the trench with little clean-up required.

    APPARATUS FOR PRODUCING FOAMED BUILDING MATERIALS

    公开(公告)号:US20210213641A1

    公开(公告)日:2021-07-15

    申请号:US17270546

    申请日:2019-08-22

    申请人: Holger Gawryck

    发明人: Holger Gawryck

    摘要: The invention relates to an apparatus (110) for producing foamed building materials, comprising a gas supply unit (112), a suspension supply unit (150-156), and a mixing chamber (118), the apparatus (110) further comprising a control and/or regulating unit (136) which has means (116, 124, 130, 134, 146,) for supplying values of a plurality of input parameters, based on which at least a temperature of the dispersion and an air pressure in an environment of the apparatus (110) can be inferred, the control and/or regulating unit (136) being further configured to influence at least one output parameter, by means of which the ratio of the volumes and/or masses and/or densities of gas and suspension supplied per unit of time can be adjusted. The invention further relates to a corresponding method.

    METHOD AND APPARATUS FOR PASTE BACKFILL
    5.
    发明申请

    公开(公告)号:US20190017381A1

    公开(公告)日:2019-01-17

    申请号:US16069018

    申请日:2017-01-12

    发明人: Mathew REVELL

    IPC分类号: E21F15/10 B28C9/00 B28C7/02

    摘要: An apparatus for backfill paste includes a mixing means configured to produce paste, a storage means configured to store paste, and a feeding means configured to feed paste to a borehole. The mixing means and the storing means is formed of a combined storage and mixing means. The feeding means includes a bottom discharge port configured to feed paste from the combined storage and mixing means. The apparatus includes monitoring means configured to monitor the level of paste in the combined storage and mixing means to maintain the level of paste in the combined storage and mixing means above a setpoint value so as to prevent air from entering the borehole from the combined storage and mixing means.

    Process for Producing Granular Solid Matter from Coal Ash as Raw Material and Apparatus Therefor
    7.
    发明申请
    Process for Producing Granular Solid Matter from Coal Ash as Raw Material and Apparatus Therefor 失效
    以煤灰为原料生产颗粒状固体的方法及设备

    公开(公告)号:US20100108788A1

    公开(公告)日:2010-05-06

    申请号:US12447235

    申请日:2007-10-25

    IPC分类号: B02C23/12 B02C23/10 B28C9/00

    摘要: A method of estimating the hydration reactivity of coal ash with high precision and determining the amount of milling water for obtaining a milling product in funicular form at the stage of milling; and a molding method being free from the problem of adhesion to a pressurization board at the stage of molding after the milling. When any collected coal ash exhibits a corrected basicity ((CaO+Fe2O3+MgO)/SiO2 (weight ratio)) of 0.1 or higher and a reactivity index (corrected basicity/(R2O/Al2O3) (weight ratio)) of 10 or higher, the coal ash as a raw ash is transferred to raw ash silo (2). Otherwise, the coal ash is transferred to waste ash silo (3). The raw ash within the raw ash silo (2) is poured in mill (8), and lime and gypsum are added and further milling water is charged thereto and milled. The amount of milling water is regulated so that with respect to agitator power per weight of material milled by the mill, the ratio of (average of power during 30 to 40 sec after completion of water charging)/(power at idling) ranges from 3 to 4, and so that with respect to agitator power per weight of material milled during 30 to 90 sec after completion of water charging, the ratio of (width of power fluctuation)/(average of power) ranges from 0.1 to 0.3.

    摘要翻译: 一种以高精度估算煤灰水合反应性的方法,并确定研磨阶段用于获得缆车形式的研磨产品的研磨水量; 以及在研磨后的成型阶段没有粘附到加压板的问题的成型方法。 当所收集的煤灰显示为0.1或更高的校正碱度((CaO + Fe 2 O 3 + MgO)/ SiO 2(重量比))和反应性指数(校正碱度/(R 2 O / Al 2 O 3)(重量比))为10或更高时 将煤灰作为原料灰分转移到原料灰仓(2)。 否则,煤灰转移到废灰仓(3)。 将原料灰仓(2)内的原料灰倒入研磨机(8)中,加入石灰和石膏,再向其中加入研磨水并研磨。 调节研磨水的量,使得相对于由研磨机研磨的材料重量的搅拌器功率,(充水完成后30〜40秒内的功率平均值)/(怠速功率)的范围为3 〜4,并且,相对于在充水结束后30〜90秒钟内研磨的材料的重量的搅拌器功率,(功率波动宽度)/(平均功率)的比例为0.1〜0.3。

    Backfill paste production facility and method and apparatus for
producing high density slurry and paste backfills
    8.
    发明授权
    Backfill paste production facility and method and apparatus for producing high density slurry and paste backfills 失效
    回填膏生产设备及用于生产高密度浆料和浆料回填的方法和设备

    公开(公告)号:US5888026A

    公开(公告)日:1999-03-30

    申请号:US786965

    申请日:1997-01-24

    CPC分类号: B28C9/004

    摘要: The invention relates to a method and apparatus for producing high density slurry and paste backfills for use in mining operations and to associated backfill paste production facilities which incorporate the aforesaid method and apparatus. The high density slurry or paste is produced from a mill tailings mixture in a silo which includes a percolation/decant device for pecolating water out of the mill tailings mixture and for decanting clarified water from atop the settled tailings. While settling occurs, air is introduced from the bottom of the silo to agitate the mixture to ensure substantially homogeneous settlement of the solids. Once settled, the resultant high density slurry or paste is fluidized by air in order to give the paste more readily flowable characteristics. The flowable paste can then be mixed with a setting agent and pumped or transported to the mine site to be used as a settable backfill.

    摘要翻译: 本发明涉及一种用于生产用于采矿作业的高密度浆料和糊状回填的方法和装置,以及结合上述方法和装置的相关回填膏生产设备。 高密度浆料或糊料由筒仓中的研磨尾矿混合物生产,其包括用于将水从工厂尾矿混合物中取出并用于从沉淀的尾矿顶部倾析澄清的水的渗滤/倾析装置。 在发生沉降的同时,从筒仓的底部引入空气以搅拌混合物以确保固体的基本上均匀的沉降。 一旦沉降,所得到的高密度浆料或糊状物通过空气流化,以使糊料更容易流动的特性。 然后将可流动的糊剂与固化剂混合并泵送或运输到矿场以用作可设置的回填。

    Mud-mixing machine for drywall texturing and other applications
    9.
    发明授权
    Mud-mixing machine for drywall texturing and other applications 失效
    泥浆混合机用于干墙纹理和其他应用

    公开(公告)号:US5570953A

    公开(公告)日:1996-11-05

    申请号:US345299

    申请日:1994-11-28

    申请人: Harlen E. DeWall

    发明人: Harlen E. DeWall

    摘要: A method of forming a mixture of powdered material and water includes the step of providing a hopper, a holding tank, a tube intermediate the hopper and the holding tank, and an air-powered auger arranged to feed powdered material from the hopper through the tube to the holding tank. The method proceeds by adding powdered material to the hopper, supplying water to the tube, and operating the auger to feed the powdered material into the tube, to mix it with water in the tube, and then to push the mixture out of the tube to the holding tank. For drywall texturing applications, the mixture may then be delivered from the holding tank under pressure to a spray nozzle. An apparatus for forming a mixture of powdered material and water includes a hopper, a holding tank, a tube intermediate the hopper and the holding tank, and an auger extending from the hopper into the tube. The auger feeds the powdered material from the hopper into the tube, mixes the powdered material in the tube with water introduced in the tube in order to produce the mixture, and then pushes the mixture out the second end of the tube to the holding tank. One embodiment includes a frame for supporting the foregoing components along with an air-driven motor for the auger, an air-driven pump for delivering the mud from the holding tank to a spray nozzle, a first air-driven stirring mechanism for stirring the powdered sack material in the hopper, a second air-driven stirring mechanism for stirring the mixture held in the holding tank, and suitable controls for regulating the production of mud according to the amount used.

    摘要翻译: 形成粉末材料和水的混合物的方法包括提供料斗,储存罐,料斗和储存箱中间的管的步骤和布置成从料斗通过管道供给粉末材料的空气动力螺旋钻 到储罐。 该方法通过向料斗中加入粉末材料,向管供水,并操作螺旋钻将粉末材料进料到管中,将其与管中的水混合,然后将混合物从管中推出 储罐。 对于干墙纹理应用,混合物然后可以在压力下从储存罐输送到喷嘴。 用于形成粉末材料和水的混合物的装置包括料斗,储存罐,料斗和储存罐中间的管以及从料斗延伸到管中的螺旋钻。 螺旋钻将粉料从料斗送入管中,将管中的粉末材料与引入管中的水混合,以产生混合物,然后将混合物从管的第二端推出到储罐。 一个实施例包括用于支撑前述部件的框架以及用于螺旋推运器的气动马达,用于将泥浆从储存罐输送到喷嘴的空气驱动泵,用于搅拌粉末状的第一空气驱动搅拌机构 料斗中的袋材料,用于搅拌保持在容纳罐中的混合物的第二气动搅拌机构,以及根据所用量调节泥浆生产的合适的控制装置。