摘要:
Provided herein are methods and compositions utilizing one or more cementitious replacement materials, one or more alkaline activating materials, and, optionally one or more bonding materials and/or one or more setting time enhancer materials. The one or more cement precursors comprises one or more of calcareous sludge; paper pulp, biomass flyash; bag house dust; biomass sludge; filter cakes from bio industry's and wastewater treatment; bio ash; biomedical ash; agricultural ash; sugar cane bagasse; rice husk ash; palm oil fuel ash; oxygen furnace slags; plant stalks; bio char; starch; pyrophyllite; or a combination thereof. The one or more alkaline activating agents comprises potassium silicate, potassium hydroxide, sodium hydroxide, sodium silicate, calcium hydroxide, magnesium hydroxide, reactive magnesium oxide, calcium chloride, sodium carbonate, silicone dioxide, sodium aluminate, calcium sulfate, sodium sulfate, or dolomite, or a combination thereof. The system comprises a vertical impact mixer.
摘要:
The invention relates to a 3-D printing method for manufacturing an element (1, 200) made of a material which comprises hydraulic binder and aggregates, said element comprising at least a primary zone (14, 206) and at least a secondary zone (16, 202, 204), the density of the material being higher in the or each primary zone (14, 206) than in the or each secondary zone (16, 202, 204), said method comprising mixing (22) a dry mortar composition with water to form a base wet mortar, conveying said base wet mortar towards a printer head (28) and, by moving said printer head, depositing superposed mortar layers (11, 12) to form said element (1, 200), wherein, before depositing the mortar layers, or the portions of mortar layers, that belong to the secondary zone (16, 202, 204), an aqueous foam is added to said base wet mortar during said conveying of the base wet mortar towards the printer head (28), and wherein at least part of the mortar layers, or portions of mortar layers, that belong to a secondary zone (16, 202, 204) support some of the mortar layers, or portions of mortar layers, that belong to a primary zone (14, 206).
摘要:
Le dispositif de machine de projection (1) comporte une vis de convoyage (2) entraînant une matière à projeter, un boitier d'engrenages (5) délimitant une chambre de propulsion (3), ainsi qu'au moins une turbine de projection (8) entrainée par un moteur (4) et agencée au sein du boitier d'engrenages (5) de sorte à propulser la matière à projeter à travers un orifice de sortie (6).
摘要:
Ein Verfahren zum Applizieren eines aushärtbaren Baustoffs, insbesondere in einem generativen Verfahren, umfasst die Schritte: - Bereitstellen von wenigstens zwei separaten Komponenten des Baustoffs; - Zugabe der wenigstens zwei separaten Komponenten in eine Mischvorrichtung (10), insbesondere in eine Mischkammer der Mischvorrichtung (10), mit einer Zuführvorrichtung (9); - Vermischen der wenigstens zwei separaten Komponenten in der Mischvorrichtung (10) unter Erhalt des aushärtbaren Baustoffs in abbindendem aushärtendem Zustand; - Zuführen des abbindenden Baustoffs durch eine Förderleitung (12) zu einem in wenigstens einer Raumrichtung bewegbaren Druckkopf (3) unter Verwendung einer Fördervorrichtung (30); - Applizieren des abbindenden Baustoffs mit dem bewegbaren Druckkopf (3).
摘要:
L'invention concerne un système d'extrusion de cordons de matériau cimentaire pour robot de fabrication additive de structures architecturales comprenant : une tête d'extrusion (30) de cordons de matériau cimentaire comprenant une bouche d'entrée (31), une buse de sortie (34), et une enceinte de mélange (35); un circuit d'alimentation (20) en matériau cimentaire de ladite tête d'extrusion (30) comprenant un réservoir de stockage (10), une conduite (21) d'alimentation, et une pompe de gavage (22), caractérisé en ce qu'il comprend en outre un dispositif de colorisation (40) du matériau cimentaire présent dans ladite tête d'extrusion (30) comprenant au moins un réservoir de pigments de couleur (41a, 41b, 41c), au moins une conduite de colorisation (48a, 48b, 48c) débouchant dans ladite enceinte de mélange (35), chaque conduite de colorisation (48a, 48b, 48c) étant équipée de moyens de réglage de la quantité de pigments injectés dans ladite enceinte de mélange (35), de sorte qu'une commande coordonnée des moyens de réglage permet de définir une couleur du cordon de matériau cimentaire extrudé par ladite buse de sortie (34).
摘要:
Method and system to measure and monitor the grey water content in a rotating concrete mixer drum mixer truck using a sensor attached to the interior of the concrete mixer drum. By measuring the grey water content before a batching process takes place, the batched water (and cement content and admixture type and content) can be modified in order to maintain expected performance of the batched load in terms of both strength and rheology, or more simply, some or all of the grey water can be discharged from the concrete mixer drum before batching.
摘要:
Disclosed is a method and system for blending a foam modifier with foaming agent on-line, e.g., as may be particularly useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C 6 -C 16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.
摘要:
The present invention generally relates to mixing systems for concrete, mortar, grout or other aggregate and more specifically to portable single person carries' mixing systems capable of mixing concrete or other aggregates uniformly, rapidly and with less waste. In accordance with one aspect of at least, one embodiment of the present disclosure, a portable aggregate mixing system is disclosed comprising a mixer with a power source and mixing tines and a mixing container comprising sidewalls, a bottom surface, a front and back wall and an open top. The mixing system coordinates the mating of the mixing blades or tines of a mixer with the surface characteristics of a customized or standard mixing tub or wheelbarrow to ensure uniform mixing of aggregate occurs quickly with minimal waste.
摘要:
Machine à projeter (1) comprenant un bras de malaxage placé dans une chambre de malaxage et prolongé par une vis excentrique (21) se terminant dans un étage de compression (11) d'une pompe, la pompe étant agencée pour pomper simultanément un mélange vers une sortie de mélange (12) et pour pomper une phase solide vers ladite chambre de malaxage (4), un moyen de contrôle (25) est relié à un capteur de variable rhéologique du mélange associé à une lance de projection, et à un régulateur de vitesse agencé pour agir sur ladite vitesse de rotation du bras de malaxage.
摘要:
Mixing device for handling of a cement product, comprising a carryable mixing unit for mixing of powder and water, a feeder unit for feeding in powder to the mixing unit and a flexible tube packet connecting the mixing unit to the feeder unit, wherein the mixing unit comprises a receiver part for powder, dosing equipment for powder, dosing equipment for water, a mixer for mixing of powder and water and an outlet pump for feeding out the finished mixed cement product. An advantage of the invention is that the mixing unit can be carried by one person, which simplifies the handling of the mixing unit. A further advantage is that dosing and mixing of a cement product takes place automatically. The mixing of the cement product thus may take place continually.