30results about How to "Promote secondary hydration reaction" patented technology

The invention discloses high-active doping slurry and preparing method, which comprises the following parts: 55-65 percent wet-discharge coal ash, 30-44 percent calcium-increasing solution and 1-5 percent modifier, wherein the calcium-increasing solution is calcium hydroxide solution; the modifier is composed of 10-30 percent reinforcer, 20-40 percent surface modifier and 30-50 percent activist.

The invention discloses a concrete anti-medium erosion admixture based on in-situ reaction encapsulation technology and a preparation method. The core component of the concrete anti-medium erosion admixture based on in-situ reaction encapsulation technology is an encapsulated active component, and the encapsulation is to absorb and encapsulate the active component in the interlayer structure by the encapsulation component, The ratio between the encapsulating component and the active component is 0.5-8. The present invention encapsulates the inorganic nano-silica particles with high hydration reaction activity based on the coating technology, and then encapsulates the dissociation, release, and reaction of the inorganic nano-silica particles in the concrete hydration microenvironment in the later stage, and passes through the service process of the concrete The optimization of the microstructure realizes the obvious reduction of the long-term chloride ion diffusion coefficient of concrete, and provides a concrete anti-medium erosion admixture and preparation method based on in-situ reaction packaging technology for the improvement of concrete durability.

The invention discloses a clinker-less cement, which comprises the following components in parts by mass: 60-80 parts of ferronickel slag fine powder, 5-15 parts of fly ash, 3-12 parts of slag, and 3-8 parts of desulfurized gypsum , 5-25 parts of cement clinker, 2-11 parts of activator, and 1-8 parts of slaked lime. The clinker-less cement is prepared through the steps of grinding and mixing, the preparation method is simple, and the technical requirements are not high. The less-clinker cement of the present invention contains a large amount of ferronickel slag micropowder, fly ash, slag, and desulfurized gypsum industrial waste, and the amount of cement clinker contained is small, and a large amount of industrial waste such as ferronickel slag micropowder and fly ash is consumed It solves the problem of solid waste discharge and environmental pollution in the metallurgical industry, and also finds a source of raw materials for the preparation of cement materials, reducing production costs.

The invention relates to a concrete with anti-cracking, anti-seepage and high-durability effects and a preparation method thereof. The concrete is prepared from the following components of cement, flyash, silicon powder, coal gangue powder, boron nitride, phosphor residue powder, sand, crushed stone, high-strength polyvinyl alcohol fiber, a water reduction agent, a dispersing activator, a modified graphene oxide dispersion liquid and water. The concrete has the advantages that the heat conduction coefficient in the 1h age period is 2.9 to 3.7W / (m.K), the heat conduction coefficient in the 28-day age period is 3.5 to 4.7W / (m.K), the compressive strength is 67.6 to 98.3MPa, the break strength is 13.3 to 16.8MPa, the split strength is 9.3 to 9.8MPa, the tensile strength is 8.3 to 10.7MPa, and the tensile elastic modulus is 44.5 to 51.4GPa; the anti-water permeation property, anti-chlorine ion permeation property, anti-freezing and thawing property, and anti-carbonizing property can reachthe highest level; the working property is high, the volume stability is high, the durability is high, the toughness is high, the anti-cracking ability is high, and the anti-seepage ability is high.