KR-20260067924-A - Mortar composition using ash generated after incineration of household waste

Abstract

The mortar composition of the present invention comprises 25 to 35 weight% cement; 5 to 20 weight% bottom ash; 32 to 45 weight% fine aggregate; and 22 to 35 weight% water. Includes %; however, bottom ash is used as ash generated after the incineration of household waste. A sieving step in which bottom ash is filtered through a 10mm sieve for sieving tests to adjust its size; washing the bottom ash that passed through the 10mm sieve with water Water washing step; salt removal step of removing salt by immersion in water above 25℃ for 1 to 7 days; drying at 90~100℃ It is preferable that it be produced by a process including a drying step of drying in a machine for 24 hours or more. Bottom ash contains many impurities remaining from household waste. Therefore, many impurities are added to the mortar composition It must be weighed in a combined state. In particular, since food waste contains salt, the salt must be removed. It is important to improve Ash's condition.

Inventors

• 홍윤자

Assignees

• 주식회사 그린모어

Dates

Publication Date

20260513

Application Date

20241106

Claims (1)

1. Claim 1 25 ~ 35 wt% cement; Bottom ash 5 ~ 20 wt%: Fine aggregate 32 ~ 45% of the standard amount; Contains 22 to 35 weight% of water; but, A mortar composition characterized in that the above-mentioned bottom ash is ash generated after the incineration of household waste. Claim 2 In paragraph 1, The above bottom ash is Sieve step for adjusting size by filtering through a 10mm sieve for sieve analysis testing; A water washing step for washing the bottom ash that has passed through the above 10mm sieve with water; Salt removal step of removing salt by immersing in water at 25℃ or higher for 1 to 7 days; Mortar characterized by being produced by a process including a drying step of drying in a 90~100℃ dryer for 24 hours or more. Composition. Claim 3 In paragraph 1, A mortar composition characterized by the bottom ash having a specific gravity of 2.08 to 2.31. Claim 4 In paragraph 1, A mortar composition characterized by the fact that the above bottom ash has a fineness of 202 to 231 m²/kg. Claim 5 In paragraph 1, Based on 100 units of the weight of the above mortar composition, A mortar composition characterized by mixing 0.1 to 0.3 parts by weight of a polycarboxylic acid-based admixture.

Description

Mortar composition using ash generated after incineration of household waste The present invention relates to the field of construction, and more specifically, to a mortar composition using ash generated after the incineration of household waste. As concern over environmental pollution increases, the safe disposal of waste generated from power plants is becoming important. As the amount of household waste generated increases, waste that can be recycled through separate collection is processed through recycling. However, all non-recyclable waste is incinerated. However, even if incinerated, not all of the waste is burned; by-products are generated after incineration. Most of the post-incineration by-products generated in this way are disposed of at high cost. Household waste, in terms of classification, It is designated because it belongs to the category of designated waste among industrial waste and contains substances prescribed by the Ministry of Environment in amounts exceeding the standards. It is being treated as waste. FIG. 1 shows bottom ash and bottom ash after sieving treatment according to an embodiment of the present invention. FIG. 2 is bottom ash observed by a microscope inside a composition according to one embodiment of the present invention. FIG. 3 is a photograph showing the particle shape of bottom ash according to one embodiment of the present invention. FIG. 4 is a particle distribution diagram of cement and bottom ash according to an embodiment of the present invention. FIG. 5 is the compressive strength test result of a mortar composition according to one embodiment of the present invention. FIG. 6 is the flexural strength test result of a mortar composition according to one embodiment of the present invention. FIG. 7 is the adhesion strength test result of a mortar composition according to one embodiment of the present invention. FIG. 8 is the ultrasonic test result of a mortar composition according to one embodiment of the present invention. FIG. 9 is the result of a chloride ion penetration test of a mortar composition according to one embodiment of the present invention. Referring to the attached drawings, an embodiment of a mortar composition using ash generated after the incineration of household waste according to the present invention We will explain in detail, and in the explanation referring to the attached drawings, identical or corresponding components are the same drawings Numbers will be assigned, and redundant explanations regarding them will be omitted. [0023] Also, terms such as 1, 2, etc. used below refer to identification symbols for distinguishing identical or corresponding components It is merely, and identical or corresponding components are not limited by terms such as first, second, etc. [0024] Also, the term "combination" refers to the contact relationship between each component, where each component is in direct physical contact with each other. It does not mean only that, but that other components are interposed between each component, and that each component contacts the other components. It should be used as a concept that encompasses even cases where it is already done. [0025] Below, a mortar composition using ash generated after the incineration of household waste is described in detail with reference to the attached drawings. all. [0027] The mortar composition of the present invention comprises 25 to 35 weight% cement; 5 to 20 weight% bottom ash; 32 to 45 weight% fine aggregate; and 22 to 35 water. Includes weight %; however, bottom ash is used as ash generated after the incineration of household waste. [0028] A sieving step in which bottom ash is filtered through a 10mm sieve for sieving tests to adjust its size; washing the bottom ash that has passed through the 10mm sieve with water Water washing step; salt removal step of removing salt by immersion in water above 25℃ for 1 to 7 days; 90~100℃ drying It is preferable that it be produced by a process including a drying step of drying for at least 24 hours in the early stages. [0029] Bottom ash contains many impurities remaining from household waste. Therefore, many impurities are added to the mortar composition. It must be weighed in a combined state. In particular, since food waste contains salt, the salt must be removed. It is important to improve Ash's condition. [0030] Table 1 below shows the measured amounts of harmful heavy metals in bottom ash that has undergone all pretreatment processes, regarding Cr, Cd, Pb, and Zn This is the result of measuring the content. Table 1 [0031] Classification Cr (ppm) Cd (ppm) Pb (ppm) Zn (ppm) Flooring 0.6645 0.02637 0.2628 53.33 [0033] Table 2 below shows the formulations of the mortar composition according to the present invention and a comparative example (a general mortar composition mixed only with fine aggregate). am. Table 2 [0034] Classification W/C (%) Water (g) Cement (g) fine aggregate (g) flooring (g) Admixture (g) Comparative Example 30 210 700 1400