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Production method of ecologic permeable ceramic bricks

A technology of ecological ceramics and permeable bricks, which is applied in the field of building materials to achieve the effects of increasing the utilization rate and usage, improving mechanical properties, and reducing emissions.

Inactive Publication Date: 2015-12-16
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to realize a method of using waste concrete, dried sludge and modified silt to prepare ecological ceramic permeable bricks, and solve how to use high-volume solid waste to prepare high compressive strength, good water permeability and wear resistance. The problem of ecological ceramic permeable bricks with excellent performance

Method used

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  • Production method of ecologic permeable ceramic bricks
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  • Production method of ecologic permeable ceramic bricks

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for preparing ecological ceramic permeable bricks by using waste concrete, dried sludge and modified sludge. Its components and contents (weight) are: dried sludge 15%, modified sludge 19%, construction waste micropowder 10% %, construction waste fine aggregate 10%, construction waste coarse aggregate 45%, alum 0.2%, borax 1%. The preparation process is as follows: various raw materials are pretreated according to the requirements, measured separately, mixed evenly according to the proportion, and then formed into a test block by pressure molding method. The temperature was raised to 300°C at a rate of °C / min, kept at 300°C for 3 hours, then raised to 1050°C at a rate of 5°C / min, and cooled after sintering for 3 hours. The sintered strength reaches 32.7Mpa, the water permeability coefficient is 0.0421cm / s, and the wear-resistant grinding pit length is 28.4cm. The microscopic scan is as follows figure 1 shown.

Embodiment 2

[0030] A method for preparing ecological ceramic permeable bricks by using waste concrete, dried sludge and modified sludge. Its components and contents (weight) are: 20% of dried sludge, 29% of modified sludge, and 5% of construction waste powder %, construction waste fine aggregate 10%, construction waste coarse aggregate 35%, alum 0.15%, borax 1%, the preparation process is: the various raw materials are pretreated according to the requirements, measured separately, mixed according to the proportion, and then press-molded The test block is formed by the method, the forming pressure is 20Mpa, after forming, it is dried naturally for 48 hours and then dried in the environment of 100 ℃, and the temperature is raised to 300 ℃ at the speed of 2 ℃ / min, after the constant temperature is 3 hours at 350 ℃, and then the temperature is 4 ℃ / min The temperature was raised to 1100°C at a certain speed, and the temperature was lowered after sintering for 3 hours. The sintered strength rea...

Embodiment 3

[0032] A method for preparing ecological ceramic permeable bricks by using waste concrete, dried sludge and modified sludge. Its components and contents (weight) are: 20% of dried sludge, 24% of modified sludge, and 5% of construction waste powder %, construction waste fine aggregate 5%, construction waste coarse aggregate 45%, alum 0.1%, borax 1%. The preparation process is as follows: various raw materials are pretreated according to the requirements, measured separately, mixed evenly according to the proportion, and then formed into a test block by pressure molding. Raise the temperature to 300°C at a rate of ℃ / min, keep the temperature at 320°C for 3 hours, then raise the temperature to 1150°C at a rate of 6°C / min, and cool down with the furnace after sintering for 3 hours. The sintered strength reaches 39.6Mpa, the water permeability coefficient is 0.0386cm / s, and the wear-resistant grinding pit length is 25.6cm. The microscopic scan is as follows image 3 shown.

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Abstract

The invention provides a production method of ecologic permeable ceramic bricks. The method comprises the following steps: 1, taking 5-10% of construction waste micro-powder, 5-15% of construction waste fine aggregates, 30-45% of construction waste coarse aggregates, 15-20% of dried sludge, 15-40% of modified mud, 0.075-0.2% of alum and 0.5-1% of borax; and 2, uniformly mixing, molding a test block under a molding pressure of 10-20Mpa through adopting a pressure molding process, naturally drying after molding, heating to 300-350DEG C at a rate of 2-3DEG C / min, keeping the temperature at 300-350DEG C for 2.5-3.5h, heating to 1050-1150DEG C at a rate of 3-8DEG C / min, sintering for 3-4h, and cooling. The method has the advantages of high waste utilization rate and effective solving of the contradiction between mechanical performances and the water permeability.

Description

technical field [0001] The invention belongs to building materials and provides a method for preparing ecological ceramic permeable bricks by using waste concrete, dried sludge and modified sludge. Background technique [0002] With the rapid development of my country's economy and the vigorous development of urbanization, the original green space was replaced by large-scale ground pavement, and the formed "urban desert" greatly increased the impermeable area, making it impossible for urban rainwater to return to nature. As a result, urban The groundwater is greatly reduced, and there is a danger of urban buildings sinking; and when the city encounters a sudden heavy rain, the rainwater on the road surface cannot leak quickly, causing a great burden on urban drainage facilities and easily causing urban waterlogging. At the same time, its large area of ​​paved road weakens the breathing function of the city, which will cause the "heat island effect", reduce the comfort of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06
Inventor 蹇守卫何桂海文斌马保国莫志胜郅真真
Owner WUHAN UNIV OF TECH
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