8results about How to "Fully hydrated" patented technology

The application provides a continuous production method and system of calcium hydroxide with high whiteness and high specific surface area, and relates to the technical field of limestone deep processing. The continuous production method comprises the following steps: step one: continuously adding quicklime particles into the inlet of a primary digester, continuously adding digestion water and an additive into the inlet of the primary digester, and carrying out premixing and pre-digestion under stirring conditions; step two: continuously introducing the discharge of the primary digester into a secondary digester, continuously adding digestion water and an additive into the inlet of the secondary digester, and stirring and digesting and aging; step three: the discharge of the secondary digester is sequentially introduced into a tertiary digester, a quaternary digester and a quinary digester for digestion and aging, and the product is obtained after grading by a grader. The method can continuously prepare calcium hydroxide with high whiteness and high specific surface area, and has the characteristics of simple process, short time consumption, remarkable effect and low energy consumption, and has been applied in actual production and has good use effect.

The application discloses a kind of bio-based hybrid polymerization water-repellent cementitious materials and preparation method thereof, belong to building material technical field, solve the problem that traditional cement-based cementitious material is easy to scatter in water, pollute environment and low later strength when used for underwater construction, the water-repellent cementitious material is composed of the following mass parts of raw materials: 100 parts of fast hardening cement, 25-50 parts of stone powder, 25-50 parts of fly ash, 10-15 parts of silica powder, 25-35 parts of metakaolin, 0-10 parts of nano clay, 1-2 parts of water reducing agent, 0.5-5 parts of starch, 30-60 parts of water, 5-10 parts of organic monomer, 0.05-0.3 parts of initiation system and 0.005-0.05 parts of crosslinking agent.The water-repellent cementitious material prepared by the application has good dispersion resistance and water repellency underwater, maintains the integrity of components to facilitate the full hydration reaction, and has higher mechanical compressive strength.

This invention discloses a heating and curing device for concrete, belonging to the field of concrete curing technology. It includes a device shell with a first and second flap on its front surface. A rotating buckle is provided on the first flap. A water collection tank is located at the bottom of the shell, and a water inlet pipe is located at the top. This invention utilizes a built-in temperature adaptive adjustment structure. When the air bladder inside the fixed box expands due to heat, it pushes a lifting plate to slide along the fixed box. The angle of the connecting rod is adjusted via a transmission rod and crossbar, thereby pushing the sliding baffles along a fixed track, reducing the distance between the sliding baffles and decreasing the steam flow. When the temperature decreases, the air bladder contracts, and the telescopic spring pulls the lifting plate back to its original position, increasing the distance between the sliding baffles and increasing the steam flow. This achieves automatic and constant temperature control inside the device, avoiding problems such as concrete cracking and insufficient strength caused by excessively high or low temperatures, significantly improving curing quality.

The application provides a bridge cap intelligent maintenance collaborative control method based on multi-sensor fusion and model prediction, comprising the following steps: S1: inputting and configuring parameters; S2: collecting and preprocessing multi-source data; S3: extracting maintenance state characteristics from the preprocessed data; S4: setting a partition water distribution scheme according to the maintenance characteristics; S5: setting a temperature regulation scheme according to the maintenance characteristics; S6: performing behavior prediction and optimizing decisions; and S7: generating and issuing control instructions. The application integrates the whole process from data collection, cleaning, feature extraction to intelligent decision making, control instruction generation and issuance, realizes closed-loop automatic control of the perception-analysis-decision-execution of the maintenance process, and greatly reduces the dependence on artificial experience.

This invention relates to a pretreated reinforced recycled aggregate concrete and its preparation method, comprising the following raw materials: 320-360 parts cement; 20-40 parts fly ash; 80-120 parts mineral powder; 585-670 parts manufactured sand; 1050-1200 parts recycled coarse aggregate; 156-172 parts water; and 11-12.3 parts admixtures. After pretreatment, the concrete prepared from the recycled coarse aggregate exhibits significantly improved performance compared to the untreated recycled coarse aggregate. The synergistic effect of multiple pretreatment methods significantly improves the water absorption, crushing index, and apparent density of the raw coarse aggregate. Pretreatment of the recycled coarse aggregate provides enhanced conditions for internal hydration in the recycled concrete and simultaneously improves the surface roughness of the recycled coarse aggregate, thus enhancing the workability and increasing the strength of the concrete.

The application discloses a UHPC concrete ditch cover plate and a preparation method thereof, and relates to the technical field of concrete ditch cover plates. The UHPC concrete ditch cover plate is prepared from the following raw materials in parts by mass: cement 350-380 parts, composite aggregate 450-470 parts, active mineral admixture 120-140 parts, composite fiber 8-12 parts, core-shell particle 3-5 parts, carbon nanotube dispersion liquid 0.5-1.5 parts, UHPC special polycarboxylic acid water reducing agent 5-8 parts, viscosity stabilizer 0.5-1.5 parts and water 130-145 parts. In the application, silica ash, S95 grade mineral powder and first-grade fly ash are compounded according to specific proportions to serve as the active mineral admixture, a cementing system with gradient hydration and microstructure optimization is constructed, the matrix has ultralow porosity and high toughness, meanwhile, the spherical micro-fine quartz sand and the broken basalt mechanism sand are compounded to serve as the composite aggregate, the viscosity of the mixture is reduced, the forming fluidity is improved, the bonding strength of the interface between the aggregate and the slurry is improved, and the interface is prevented from becoming a weak link.

A preparation method of coal gangue autoclaved aerated concrete and application of a regulator thereof, the regulator comprising a combination of one or more of silica fume, silica sol, sodium tripolyphosphate, etc. A coal gangue autoclaved aerated concrete, raw materials of the coal gangue autoclaved aerated concrete comprising more than 50% of coal gangue in total mass of the raw materials of the coal gangue autoclaved aerated concrete. A method for preparing coal gangue autoclaved aerated concrete, comprising: step 1: decarburization treatment of the coal gangue, the decarburization treatment comprising photoelectric sorting and / or water washing flotation; after the decarburization treatment, the carbon content of the gangue is less than or equal to 7%; step 2: mixing and stirring the raw materials of the coal gangue autoclaved aerated concrete, then pouring and standing, cutting and demolding, pre-curing, autoclaved curing to obtain the autoclaved aerated concrete. The method can greatly shield or reduce the influence of carbon content and low activity of coal gangue and improve the compressive strength of the product by multi-stage decarburization, single-doped and multi-doped complex doped regulator.

The utility model relates to the technical field of building material production, and discloses a cleaning device applied to maintenance of ardealite hollow blocks, which comprises a maintenance cover used for providing a proper maintenance environment for the ardealite hollow blocks, and can effectively maintain the temperature and humidity of the ardealite hollow blocks and ensure smooth hydration reaction. A spraying mechanism is arranged in the curing cover, and water mist is sprayed to the surfaces of the ardealite hollow building blocks, so that the ardealite hollow building blocks are kept wet, and the hydration reaction is ensured to be fully carried out. And a rolling cleaning mechanism is additionally arranged at the inlet end of the maintenance cover, and the surfaces of the pressed ardealite hollow blocks are cleaned, so that spraying water mist can be in direct contact with the surfaces of the ardealite hollow blocks and uniformly permeate into the ardealite hollow blocks in the subsequent spraying treatment process, and the production quality of the ardealite hollow blocks is improved. In addition, a static sweeping mechanism is further arranged in the maintenance cover and used for sweeping powder on the surfaces of the phosphogypsum hollow building blocks subjected to spraying treatment.