Abstract:
PURPOSE: A thermal insulative and fire resistant mortar for spraying is provided to maximize the resource recovery technology of the potential hydraulic industrial byproduct, and to improve residential environment by a dynamic property promotion of the thermal insulative and fire resistant mortar. CONSTITUTION: A thermal insulative and fire resistant mortar for spraying is consisted with 10~70wt% of cement, 0.1~5wt% of alkaline granting, 0~50wt% of bottom ash, 10~50wt% of ultra micro latent hydraulic material, 0.1~2wt% of foaming agent, 0.1~2wt% of antifoaming agent, 0.1~1.0wt% of tackiness agent, 0.02~2wt% of retarder, 1~5wt% of powdered resin, and additionally a mineral natural fiber and a synthetic filament. Insulation effect of the mortar is maximized by using a large amount of foaming agent while using an antifoaming agent to make the foam into minute particles.
Abstract:
본 발명은 다공질의 바닥재와 중유회로 입도조정된 뿜칠용 단열 내화 모르타르에 관한 것이다. 본 발명은 중유회, 바텀애쉬, PAAm 수용성 수지, 규회석을 함유하는 뿜칠용 내화단열 모르타르를 제공한다. 본 발명에 따르면, 잠재 수경성 산업부산물의 자원화 기술을 극대화할 수 있고, 고가의 단열재 사용 억제에 의한 경제성을 증진할 수 있으며, 단열 내화 모르타르의 역학특성 증진에 의한 주거환경 개선하는 데 도움을 줄 수 있다. 뿜칠, 단열, 내화, 모르타르, 광물성 천연섬유(Wollastonite), 합성 장섬유
Abstract:
화력 발전소에서 생성되는 부산물인 바텀 애쉬를 이용한 고강도 경량 무수축 충진 모르타르에 관한 것이다. 본 발명은, 결합재로서 시멘트 100 중량부; 미분쇄 바텀 애쉬와, 상기 미분쇄 바텀 애쉬를 0~50 중량% 치환하는 플라이 애쉬로 이루어지고 비표면적이 3,500~4,500cm 2 /g인 충진재 20 내지 100 중량부; 및 모래와, 상기 모래의 20~60중량%를 치환하는 2.4 mm 이하의 입도를 갖는 바텀 애쉬로 이루어지는 골재 20 내지 100 중량부를 포함하는 것을 특징으로 하는 충진용 모르타르를 제공한다. 본 발명에 따르면, 화력발전소의 산업부산물을 활용해 기존 충진재에 비해 비중이 가벼우면서도, 우수한 충진성, 높은 역학적 고강도성 및 내화학성을 갖는 새로운 충진 모르타르를 제공할 수 있게 된다. 바텀 애쉬, 미분쇄, 플라이 애쉬, 충진재, 골재, 고강도, 내화학성
Abstract:
PURPOSE: A light and low shrinkage mortar with high strength is provided to improve strength and chemical resistance using bottom ash generated in a thermal power plant. CONSTITUTION: Filling mortar comprises: cement 100 weight% as a binder; filler 20-100 weight% consisting of pulverized bottom ash and fly ash replacing pulverized bottom ash 0-50 weight%, wherein the filler has a specific surface area of 3,500-4,500cm^2/g; and aggregate 20-60 weight% consisting of sand and bottom ash replacing sand 20-60 weight%.
Abstract:
The present invention relates to a rapid hardening cement concrete composition for a boundary block, a method for producing a patterned boundary block using same, and a patterned boundary block produced by same. The composition comprises: a special admixture of 0.01-15 wt%, a rapid hardening cement binder of 10-35 wt%, a fine aggregate of 15-50 wt%, a coarse aggregate of 20-60 wt%, and water of 0.1-15 wt%. The special admixture comprises: a polyethylene vinyl acetate resin of 40-98 wt%, a polymethyl methacrylate resin of 0.1-30 wt%, a polyvinyl acetate-vinyl versatate resin of 0.1-20 wt%, a polystyrene-butyl acrylate resin of 0.01-20 wt%, and starch of 0.01-20 wt%. By means of the present invention, the special admixture mixed with the composition can reduce a water-cement ratio, can improve the leveling, workability, ductility, flexural strength, bonding strength, durability, and retentivity of the composition, and can prevent cracks. Industrial wastes can be recycled to be used as the rapid hardening cement binder so that the composition is useful in terms of recycling. The water-cement ratio is effectively reduced even when a small amount of the special admixture is added, so that the composition can effectively express a higher strength and a better durability than existing cement concrete compositions.
Abstract:
A mortar for recovering deteriorated parts in concrete and a method for recovering deteriorated parts by using the same are provided to increase durability and to inhibit the deterioration of concrete. A mortar for recovering deteriorated parts in concrete comprises 15-35 wt% of portland cement, 2-10 wt% of alumina cement or calcium sulfur aluminate cement, 1-5 wt% of gypsum, 1-5 wt% of silica fume, 3-15 wt% of slag or fly ash, 0.1-2 wt% of mica, 0.05-0.5 wt% of a water-reducing agent, 1-5 wt% of a powdered resin, 0.5-5 wt% of wollastonite, 0.1-0.5 wt% of synthetic fibers, 1-5 wt% of a functional admixture and 30-60 wt% of quartz sands. A deteriorated surface in concrete is recovered by a method comprising the steps of: surface-treating of removing deteriorated parts and foreign matters; coating an alkali recovering agent; coating an anti-corrosive coating agent; coating the mortar-containing composition; and finishing with a fluoropolymer coating agent.