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Modified waste clay brick powder cement mortar

A technology of waste clay brick powder and cement mortar, which is applied in the field of building materials, can solve problems such as poor compressive strength and flexural strength, and achieve the effects of reducing primary cracks, reducing pore channels, and enhancing activity

Inactive Publication Date: 2018-01-19
蒋春霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: aiming at the problem of poor compressive strength and flexural strength of traditional waste clay brick powder cement mortar, a modified waste clay brick powder cement mortar is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Add waste brick powder and sodium silicate solution with a volume concentration of 40% into the No. 1 beaker at a mass ratio of 1:100, stir and mix for 50 minutes to obtain a mixed solution; add hydrochloric acid dropwise into the No. pH to 6.6, to obtain a primary acidification solution; continue to drop hydrochloric acid into No. 1 beaker with a rubber dropper, adjust the pH to 5.5, to obtain a secondary acidification solution; Under the condition of 20°C, freeze for 2 hours to obtain frozen blocks, and then place the frozen blocks in a freezer pulverizer for crushing, and pass through a 500-mesh sieve to obtain crushed materials; put the obtained crushed materials into a single-necked flask, and move the single-necked flask to several In a constant temperature magnetic stirrer with a display speed measurement, at a temperature of 80°C and a rotation speed of 400r / min, heat and thaw until it completely melts to obtain a melted liquid, and then put the melted liquid in ...

example 2

[0027]Add waste brick powder and sodium silicate solution with a volume concentration of 40% into the No. 1 beaker at a mass ratio of 1:100, stir and mix for 50 minutes to obtain a mixed solution; add hydrochloric acid dropwise into the No. pH to 6.6, to obtain a primary acidification solution; continue to drop hydrochloric acid into No. 1 beaker with a rubber dropper, adjust the pH to 5.5, to obtain a secondary acidification solution; Under the condition of 20°C, freeze for 2 hours to obtain frozen blocks, and then place the frozen blocks in a freezer pulverizer for crushing, and pass through a 500-mesh sieve to obtain crushed materials; put the obtained crushed materials into a single-necked flask, and move the single-necked flask to several In a constant temperature magnetic stirrer with a display speed measurement, at a temperature of 80°C and a rotation speed of 400r / min, heat and thaw until it completely melts to obtain a melted liquid, and then put the melted liquid in a...

example 3

[0029] Add waste brick powder and water into No. 1 beaker at a mass ratio of 1:100, stir and mix for 50 minutes to obtain a mixed solution; put the obtained mixed solution in a refrigerator, and freeze for 2 hours at a temperature of -20°C to obtain a frozen block , and then put the frozen block in a frozen pulverizer to pulverize, pass through a 500-mesh sieve to obtain pulverized material; add the resulting pulverized material into a single-necked flask, and move the single-necked flask to a magnetic stirrer with a digital display speed measurement and constant temperature. Under the condition of 80°C and the rotation speed of 400r / min, heat and thaw until completely melted to obtain the melted liquid, then put the melted liquid in the refrigerator, and freeze for 2 hours at the temperature of -20°C to obtain the frozen material, and then crush the obtained Put the material into the No. 2 beaker, and move the No. 2 beaker to the digital display speed measuring constant temper...

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Abstract

The invention discloses modified waste clay brick powder cement mortar, and belongs to the technical field of building materials. The modified waste clay brick powder cement mortar is prepared by thefollowing steps: mixing waste brick powder with a sodium silicate solution by stirring to obtain a mixed solution; dropwise adding hydrochloric acid into the obtained mixed solution to adjustthe pH inorder to obtain primary acidizing fluid; continually dropwise adding hydrochloric acid into the obtained acidizing fluid to adjust the pH in order to obtain secondary acidizing fluid; refrigerating the obtained secondary acidizing fluid, smashing and sieving to obtain a smashed material; unfreezing the obtained smashed material by heating, and carrying out a refrigerating cycle to obtain mixed slurry; heating and stirring the obtained mixed slurry for reacting, and filtering to obtain modified refined waste brick powder; mixing cement, fine aggregate, the modified refined waste brick powder,fly ash, silica fume, slag, water, a silane coupling agent and a water-reducing agent by stirring to obtain the modified waste clay brick powder cement mortar. The modified waste clay brick powder cement mortar provided by the invention has high compressive and flexural strength.

Description

technical field [0001] The invention discloses a modified waste clay brick powder cement mortar, which belongs to the technical field of building materials. Background technique [0002] With the rapid economic and social development and the increasing scale of infrastructure construction, more and more concrete is applied to new construction. According to incomplete statistics, the output of concrete in 2013 was 2.196 billion m 3 , an increase of 18.77% over the same period in 2012, and cement output reached 2.41 billion tons, a year-on-year increase of 9.6%. Mass production of cement has caused serious environmental pollution and consumed a lot of energy. On the other hand, large-scale modernization has led to the demolition of a large number of old buildings, and the construction waste mainly composed of clay bricks (about 30% to 50%) is also increasing. Waste clay bricks have become one of the main pollution sources of environmental pollution and occupation of landfil...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 蒋春霞殷小祥张琳
Owner 蒋春霞
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