KR-20260064874-A - Concrete floor surface hardener and concrete floor polishing method using thereof

Abstract

According to the present invention, a concrete floor surface reinforcing agent is provided comprising a mortar mixture in which rapid-hardening cement, magnesia cement, and artificial silica sand powder are mixed in a volume ratio of 3:2:1; and a penetrating mixture in which 40-60 parts by weight of cyclopropanol, 30-50 parts by weight of isobutylene, 30-50 parts by weight of ethanol, 20-40 parts by weight of 2-bromobutane, 20-40 parts by weight of hydroxyacetic acid, 10-30 parts by weight of acrylonitrile, 5-15 parts by weight of quartz beads, 5-10 parts by weight of color pigment, and 90-110 parts by weight of water are mixed with 100 parts by weight of a silane complex, wherein the mortar mixture and the penetrating mixture are mixed in a volume ratio of 5:10 to 7:10.

Inventors

• 김애자
• 장호연

Assignees

• 김애자
• 장호연

Dates

Publication Date

20260508

Application Date

20241030

Claims (2)

1. A mortar mixture comprising rapid-hardening cement, magnesia cement, and artificial silica sand powder mixed in a volume ratio of 3:2:1; A penetrating mixture comprising 100 parts by weight of a silane complex mixed with 40-60 parts by weight of cyclopropanol, 30-50 parts by weight of isobutylene, 30-50 parts by weight of ethanol, 20-40 parts by weight of 2-bromobutane, 20-40 parts by weight of hydroxyacetic acid, 10-30 parts by weight of acrylonitrile, 5-15 parts by weight of quartz beads, 5-10 parts by weight of color pigment, and 90-110 parts by weight of water, A concrete floor surface strengthener characterized by a mixture of a mortar mixture and a penetrating mixture in a volume ratio of 5:10 to 7:10.
2. Includes a concrete floor surface strengthener according to paragraph 1, A pretreatment step in which the surface of the concrete floor is cleaned and polished through a polishing device; A step in which the above-mentioned concrete floor surface strengthening agent is applied to the surface or polished area of the concrete floor to form a surface strengthening layer; A concrete floor polishing method characterized by including a step in which the surface strengthening layer of the concrete floor is polished by a polishing device.

Description

Concrete floor surface hardener and concrete floor polishing method using thereof The present invention relates to a concrete floor surface strengthener and a concrete floor polishing method using the same. More specifically, the invention relates to a concrete floor surface strengthener and a concrete floor polishing method using the same, wherein a surface strengthener comprising a mixture of a mortar mixture and a penetrating mixture is applied to a polished area of a concrete floor to improve the physical performance and waterproofing of the surface strengthening layer through excellent adhesion and penetration. Generally, since the floor surface of a concrete structure is cast using the same materials as the structure—gravel, sand, and cement—the concrete surface is rough and has low surface strength. Consequently, it is easily gouged by physical impact, and dust or harmful substances become embedded in the pores of the surface, making it difficult to remove them even with cleaning, which presents a problem in maintaining hygienic cleanliness. If the aging of such concrete structures accelerates, expansion pressures caused by rebar corrosion, freeze-thaw cycles, and carbonation (neutralization) can lead to cross-sectional defects in the structure, specifically the concrete sections. This entails potential safety risks in terms of aesthetics, structural strength, and functionality. Consequently, there has been a recent increase in efforts to restore safety and functionality by reinforcing concrete structures to ensure their safety and performance; however, most surface hardeners for concrete primarily utilize Portland cement-based mortars. Here, conventional surface hardeners for concrete are, for example, manufactured into mortar by adding CSA (calcium sulfoaluminate) or a latex-based material and adding a specified fine powder binder, and are classified into aluminate-based mortars with CA and CA2 as the main component, calcium fluoroaluminate-based mortars with C11A7 and CaF2 as the main component, and sub-primary-based mortars with CSA as the main component, based on the reaction point of Ettringite, an expansive material obtained from the chemical reaction between cement and water, and the constituent minerals that exhibit rapid hardening properties. However, aluminate-based mortars have the problem that after the hydration reaction, the product transitions into a secondary hydrate that exhibits low strength, making them unstable in the long term and particularly vulnerable to calcium chloride, which can lead to a decrease in durability performance. In addition, while calcium fluoroaluminate-based and sub-primary mortars offer superior performance, they may not be economical due to the need for a separate calcination process and the additional step of grinding into fine powder. In addition, most mortars produced using the alkali-activated substances mentioned above are fast-setting rather than ultra-fast-setting, and since it takes at least one day for strength to develop after mixing with water, they are difficult to apply to emergency construction projects that require rapid construction (e.g., road repair, bridge repair, or construction in water-contacted areas during the winter). For this reason, ultra-fast setting mortars are being manufactured and used by the cement industry using previously developed alumina cement and jet cement to overcome the problem regarding the strength development time of mortars. However, due to the nature of repair mortars used in exposure to the external environment, there is a problem in that desired characteristics related to mortar quality, such as durability (freeze-thaw, carbonation, etc.), ambient temperature (drying shrinkage, etc.), compressive strength, and adhesion strength, cannot be obtained. In addition, since most reinforcing agents or surface strengtheners used to reinforce conventional concrete structures are primarily mortar, they fail to penetrate deeply into cracks or pores of the concrete, resulting in reduced adhesion and waterproofing properties. Hereinafter, embodiments of the present invention will be described in detail. First, the concrete floor surface reinforcing agent according to an embodiment of the present invention comprises a mortar mixture in which rapid-hardening cement, magnesia cement, and artificial silica sand powder are mixed in a predetermined volume ratio, and a penetrating mixture in which cyclopropanol, isobutylene, ethanol, 2-bromobutane, hydroxyacetic acid, acrylonitrile, and water are mixed in a predetermined weight part of a silane complex, and the mortar mixture and the penetrating mixture are mixed in a predetermined volume ratio. More preferably, the concrete floor surface reinforcing agent according to an embodiment of the present invention comprises a mortar mixture in which rapid-hardening cement, magnesia cement, and artificial silica sand powder are mixed in a volume ratio of 3:2:1, and a penetrating mixture