CEMENT MIXTURES FOR ANTIEFFLORESCENCE

• Main Authors: KIM, DONG SEUK, HA, JAE DAM, PARK, CHUL, LIM, CHAE YONG
• Format: Patent
• Language: English; Korean
• Published: 02.09.2013
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

PURPOSE: A concrete blushing prevention environmentally friendly mixed cement composition is provided to use the reaction mechanism between cement and a mineral admixture, and a functional additive for controlling the reduction of Ca(OH)2 production amount and the elution of Ca(OH)2. CONSTITUTION: A concrete blushing prevention environmentally friendly mixed cement composition contains 30-60 wt% of Portland cement, 30-50 wt% of blast furnace slag micro-powder, 5-20 wt% of fly ash, 4-10 wt% of sulphate, and 1-5 wt% of revival state polymer powder resin. The sulphate is selected from a group consisting of calcium sulfate (CaSO4), potassium sulfate (K2SO4), and sodium sulfate (Na2SO4). The revival state polymer powder resin is selected from a group consisting of an ethylene vinyl acetate copolymer resin, styrene-butadiene synthetic rubber, and an acryl group copolymer resin. [Reference numerals] (AA) Example 1; (BB) Comparative example 1; (CC) Comparative example 3; (DD) Comparative example 5