A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses an air-permeable and water-permeable brick and a preparation method thereof, and belongs to the technical field of waste treatment and building materials. The air-permeable andwater-permeable pedestrian brick is prepared from, by mass, 60-75 parts of lake sludge, 18-25 parts of clamshell, 4-8 parts of wild taro, 0.1-0.3 part of sodium nitrite and 2-6 parts of lake water. The specific preparation method comprises the following steps: mixing and stirring the lake sludge and the wild taro into initial slurry A, mashing the waste clamshell, ball-milling into powder, sieving, adding the powder into the initial slurry A, and uniformly stirring to obtain mixed slurry B; dissolving sodium nitrite in the lake water, pouring the mixed slurry B, uniformly stirring to obtain mixed slurry D, aging at room temperature, putting the aged mixes slurry D into a brick making mold, pressing and molding to obtain a raw brick blank, putting the raw brick blank into a kiln, preheating for a period of time, sintering according to a certain temperature system, and air-cooling to room temperature along with the kiln to obtain the air-permeable and water-permeable brick. The compressive strength of the air-permeable and water-permeable brick is 29.5-31.8 MPa, the room-temperature water permeability coefficient is 0.09-0.15 mm/s, the 25-time freeze-thaw strength loss is 13.2-18.3%, recycling of wastes such as waste bricks and tiles and lake sludge is achieved, environmental pollution is reduced, and the production cost of building materials is reduced.
一种透气渗水砖及其制备方法，属于废弃物处理及建筑材料技术领域。用于制备该透气渗水人行砖的原料及其质量份数为：湖泊淤泥60～75份，河蚌壳18～25份，野芋头4～8份，亚硝酸钠0.1～0.3份，湖水2～6份。具体制备方法是按照配比，先将湖泊淤泥和野芋头混合搅拌成初始浆料A，接着将废弃河蚌壳捣碎、球磨成粉过筛，加入初始泥浆A中搅拌均匀成混合浆料B。将亚硝酸钠溶于湖水中，倒入混合浆料B，搅拌均匀，得到混合浆料D，然后在室温条件下陈化，放入制砖模具中压制成型，得到生砖胚，将生砖胚置于窑炉中，预热一段时间后，按照一定的温度制度进行烧结，接着随炉空冷至室温，得到透气渗水砖。该透气渗水砖的抗压强度29.5～31.8MPa、室温透水系数0.09～0.15mm/s、25次冻融强度损失13.2～18.3％，实现了废弃砖瓦和湖泊淤泥等废弃物的再利用，减轻了环境污染，降低了建筑材料的生产成本。
The invention discloses an air-permeable and water-permeable brick and a preparation method thereof, and belongs to the technical field of waste treatment and building materials. The air-permeable andwater-permeable pedestrian brick is prepared from, by mass, 60-75 parts of lake sludge, 18-25 parts of clamshell, 4-8 parts of wild taro, 0.1-0.3 part of sodium nitrite and 2-6 parts of lake water. The specific preparation method comprises the following steps: mixing and stirring the lake sludge and the wild taro into initial slurry A, mashing the waste clamshell, ball-milling into powder, sieving, adding the powder into the initial slurry A, and uniformly stirring to obtain mixed slurry B; dissolving sodium nitrite in the lake water, pouring the mixed slurry B, uniformly stirring to obtain mixed slurry D, aging at room temperature, putting the aged mixes slurry D into a brick making mold, pressing and molding to obtain a raw brick blank, putting the raw brick blank into a kiln, preheating for a period of time, sintering according to a certain temperature system, and air-cooling to room temperature along with the kiln to obtain the air-permeable and water-permeable brick. The compressive strength of the air-permeable and water-permeable brick is 29.5-31.8 MPa, the room-temperature water permeability coefficient is 0.09-0.15 mm/s, the 25-time freeze-thaw strength loss is 13.2-18.3%, recycling of wastes such as waste bricks and tiles and lake sludge is achieved, environmental pollution is reduced, and the production cost of building materials is reduced.
一种透气渗水砖及其制备方法，属于废弃物处理及建筑材料技术领域。用于制备该透气渗水人行砖的原料及其质量份数为：湖泊淤泥60～75份，河蚌壳18～25份，野芋头4～8份，亚硝酸钠0.1～0.3份，湖水2～6份。具体制备方法是按照配比，先将湖泊淤泥和野芋头混合搅拌成初始浆料A，接着将废弃河蚌壳捣碎、球磨成粉过筛，加入初始泥浆A中搅拌均匀成混合浆料B。将亚硝酸钠溶于湖水中，倒入混合浆料B，搅拌均匀，得到混合浆料D，然后在室温条件下陈化，放入制砖模具中压制成型，得到生砖胚，将生砖胚置于窑炉中，预热一段时间后，按照一定的温度制度进行烧结，接着随炉空冷至室温，得到透气渗水砖。该透气渗水砖的抗压强度29.5～31.8MPa、室温透水系数0.09～0.15mm/s、25次冻融强度损失13.2～18.3％，实现了废弃砖瓦和湖泊淤泥等废弃物的再利用，减轻了环境污染，降低了建筑材料的生产成本。
Preparation method of water-permeable ecological brick and water-permeable ecological brick
| European Patent Office | 2024