Inorganic mineral enhancer

Abstract

The invention provides an inorganic mineral enhancer which is composed of anhydrous calcium sulphoaluminate, calcium sulfate, an activator and an initiator, and the anhydrous calcium sulphoaluminate is generated by reacting calcium oxide, aluminum oxide and calcium sulfate at the temperature of 1000 DEG C-1250 DEG C; calcium sulfate is formed by combining one or a combination of more of anhydrite,hemihydrate gypsum, dihydrate gypsum, desulfurized gypsum, phosphogypsum and fluorgypsum; the activating agent is formed by combining one or more of triethanolamine, diethanol amine, polyethylene glycol and fatty acid methyl ester; and the initiator is formed by combining one or more of potassium sulfate, sodium persulfate, ammonium persulfate, sodium nitrite and sodium hydroxide. 5 Kg-8 Kg / m<3>of the enhancer is added into per cubic meter of concrete and can replace 100 Kg-218 Kg of ordinary cement, so that the cement consumption is greatly reduced, the concrete cost is greatly reduced, theearly strength is improved, the later strength is increased, the size deformation is reduced, the hydration heat release is reduced, and the problem of shrinkage cracks of the concrete is solved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an inorganic mineral reinforcing agent. Background technique [0002] Concrete materials are composed of six parts: ordinary cement, mineral admixtures, sand, stone, admixtures, and water. The silicate minerals formed after hydration of ordinary cement play a role in strengthening the skeleton, so the proportion of cement dosage has a close influence on the compressive strength and durability of concrete. However, in the actual application process, with the increase of the proportion of cement in the concrete, a series of problems appeared in the concrete. In large-volume concrete such as road concrete, dam concrete, marine concrete, and tunnel concrete, and in high-grade concrete such as building structures, bridge structures, and special modeling structures, various cracks, defects, and even engineering defects have appeared. The quality problem has seriously affec...

AI Technical Summary

Problems solved by technology

The current technical means are divided into the following four categories, all of which have shortcomings to varying degrees and cannot fundamentally solve this problem

[0004] (1) Adding active mineral admixtures (fly ash, mineral powder, volcanic ash, etc.) When the amount is excessive, the compressive strength increases slowly, and some even show the phenomenon of insufficient 28d grades, which cannot fundamentally solve the above problems

(2) Adding excess retarder can delay the hydration speed of cement and delay the peak of hydration heat release, but it cannot reduce the total amount of heat release; at the same time, it affects the early strength and later strength of concrete

However, due to the reduction of water-cement ratio, the heat release of concrete is more concentrated; at the same time, the viscosity of concrete increases and the work performance deteriorates, which is not conducive to the actual operation of the construction site

(4) Adding a shrinkage reducing agent or an expansion agent to compensate for shrinkage can reduce shrinkage deformation to a certain extent, but it cannot reduce the heat release of hydration, and even greatly increase the heat release of hydration, making it more concentrated and causing temperature cracks

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