摘要:
A method is provided for mineralizing green wood chips to render suitable for inclusion into a wide variety of cements for producing wood-cement composites. Green wood chips of high initial moisture content are coated in a dry powdered mineral clay material and allowed to cure under ambient environmental conditions. Upon disaggregation, the chips provide a useful means of increasing hygrothermal behavior, light-weighting, and carbon sequestration by incorporation into wood-cement composites.
摘要:
An ultrastable cementitious material with nano-molecular veneer makes a cementitious material by blending 29 wt % to 40 wt % of a magnesium oxide dry powder containing 80 wt % to 98 wt % of magnesium oxide based on a final total weight of the cementitious material, with 14 wt % to 18 wt % of a magnesium chloride dissolved in water and reacting to form a liquid suspension, mixing from 2 to 10 minutes, adding a phosphorus-containing material, and allowing the liquid suspension to react into an amorphous phase cementitious material, wherein a portion of the amorphous phase cementitious material grows a plurality of crystals. The plurality of crystals are encapsulated by the amorphous phase cementitious material forming a nano-molecular veneer. A process to make the ultrastable cementitious material. A tile backer board incorporating the ultrastable cementitious material and a process for making the tile backer board.
摘要:
A production method of pseudo-wood and pseudo-stone furniture or ornament material with natural grains has a characteristic in that, the magnesia, the magnesium chloride, the water and the glass fiber are used to function as the primary staple. Then, a determined amount of modifier, sawdust powder and talcum powder is added into the primary staple. Then, the mold and the framework are operated according to the determined steps. Then, the primary staple is shaped. Then, the primary staple performs an oxidation process to form the product. Thus, the product is directly manufactured by the mold, without needing multiple and complicated working steps.
摘要:
An extrudable gypsum-based material is formed from a mixture that includes gypsum in the range of about 40 to 90% by dry weight percent, a secondary material in the range of about 0.1 to 50% by dry weight percent, a reinforcement fiber in the range of about 1 to 20% by dry weight percent, a rheology modifying agent in the range of about 0.5 to 10% by dry weight percent, a retarder in the range of about 0.1 to 8% by dry weight percent, a water in the range of 10 to 50% of a total wet material weight.
摘要:
The present invention concerns a process for oxidizing lignin at alkaline conditions. This oxidized lignin can be used as a dispersant in various end-products, for example as a renewable plasticizer in cement-containing products, such as concrete, where the ability of the oxidized lignin to endure alkaline conditions is an advantage. Further, the invention concerns a concrete mixture containing aggregate, cement, water and a plasticizer formed of oxidized lignin, and a process for producing such a concrete mixture. The oxidized lignin can be manufactured using a process, where the lignin starting material is reacted with an oxidizing agent in solution in alkaline conditions.
摘要:
A dry papercrete mix is formed by preparing a wet pulp of fiber material such as newsprint and sharp sand by mixing sand, fiber material and water in a batch or continuous mixer, drying the pulp to a moisture content below that which will cause a reaction with Portland cement and adding additional sands and/or pumice and Portland cement. The resulting dry, granular mix can then be handled stored and used in the manner which is conventional for concrete. The dry papercrete mix can also be applied by pouring the dry papercrete mix into a desired volume such as a form in a dry state and injecting water into the dry papercrete mix until the mix is sufficiently wetted without a requirement for mixing in the manner common for concrete. Structural modules and a technique for joining them into a structure are particularly appropriate to the use of dry application papercrete.
摘要:
A method is disclosed for reducing lost circulation in drilling wells, employing composite materials as lost circulation materials. The composites comprise a thermoplastic polymer and cellulosic fibers. Optionally the composites may include other components such as calcium carbonate, clay, oil and other blending agents.
摘要:
An extrudable gypsum-based material is formed from a mixture that includes gypsum in the range of about 40 to 90% by dry weight percent, a secondary material in the range of about 0.1 to 50% by dry weight percent, a reinforcement fiber in the range of about 1 to 20% by dry weight percent, a rheology modifying agent in the range of about 0.5 to 10% by dry weight percent, a retarder in the range of about 0.1 to 8% by dry weight percent, a water in the range of 10 to 50% of a total wet material weight.
摘要:
This invention aims to provide a novel material to be used for the production of components used in the construction industry such as construction blocks, wall panels, floor and roof tiles, lintels and any other product that could use this novel material. The novel material is a paper concrete made with 50% to 90% of recycled paper in the base mixture. This invention also aims to provide a novel process for making a construction block with the base mixture of paper concrete. The process for making the lightweight building blocks with this paper concrete has three main steps with two stages each. The base mixture for the paper concrete is essentially interlinked with the process for making this construction block. The two first steps of the process are crucial to achieve the base mixture and the following step is crucial to achieve a construction block. Thereafter, there are possibilities for producing these blocks with different colours by adding pigment to the paper pulp at stage 1 and adding artistic moulds to the moulds on the block making machine in stage 6.
摘要:
A cementitious composite product that can function as a substitute for stone and solid surface materials, such as granite, marble, and engineered stone is provided. Furthermore methods for manufacturing the cementitious composite product using an extrudable cementitious composition that can be extruded or otherwise shaped into stone-like building products that can be used as a substitute for many known stone products is disclosed. In one embodiment, the cementitious composite products can be manufactured more cheaply to be as tough or tougher and more durable than stone and solid surface materials.