Preparation method for bi-component cement-based repairing mortar

A repairing mortar and cement-based technology, applied in the field of building materials, can solve the problems of concrete damage, weak bonding, poor compatibility, etc., and achieve the effect of compact structure, excellent corrosion resistance, and good impact resistance

Inactive Publication Date: 2017-03-15
CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is: in view of the traditional cement and repair mortar in the process of preparation and use, the compatibility with the old concrete interface is poor, the bond is not strong, and the concrete is easily cracked after use and the concrete is damaged again. A preparation method for two-component cement-based repair mortar is proposed. The invention firstly crushes corn stalks, then mixes them with activated sludge and yellow sand in the secondary sedimentation tank, collects filter cakes after anaerobic fermentation, and then mixes the filter cakes with Cement, talcum powder and calcium chloride solution are mixed in proportion to obtain component A, and then the rice husk is fermented and calcined under high temperature conditions, and the calcined rice husk ash is dissolved in sodium hydroxide solution, and after filtering to remove impurities, Component B is obtained by rotary evaporation and concentration. When used, component A and component B are mixed in proportion to obtain a two-component cement-based repair mortar

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Weigh 2 kg of corn stalks, put them into a straw grinder, and crush them for 15 minutes. Pour the obtained straw powder into a fermenter filled with 4 L of deionized water, then add 0.6 kg of secondary sedimentation tank activated sludge, 6 kg of yellow sand, and then add 3 mL of Nitrogen gas was introduced into the fermenter at a rate of 1 / min until all the air was replaced. Then, at a speed of 180r / min and a temperature of 35°C, ferment for 5 days in an anaerobic closed manner. After the fermentation was completed, heat up to 90°C and keep warm 15min, suction filter while hot, remove the filtrate, and obtain the mixed fermentation product filter cake; weigh 4kg cement, 600g talcum powder, and 2kg of the above-mentioned obtained mixture fermentation product filter cake, add 4L of plastics with a mass fraction of 20% calcium chloride solution In the barrel, stir and mix with a wooden stick for 10 minutes to obtain component A of cement-based repair mortar; measure 2L of ...

example 2

[0020]Weigh 3 kg of corn stalks, put them into a straw grinder, and crush them for 18 minutes. Pour the obtained straw powder into a fermenter filled with 5 L of deionized water, then add 0.7 kg of secondary sedimentation tank activated sludge, 7 kg of yellow sand, and then add 4 mL of Nitrogen gas was introduced into the fermenter at a rate of 1 / min until all the air was replaced. Then, at a speed of 190r / min and a temperature of 38°C, anaerobic closed fermentation was carried out for 6 days. After the fermentation was completed, the temperature was raised to 92°C and kept warm 18min, suction filtration while hot, remove the filtrate, and obtain the mixed fermentation product filter cake; weigh 5kg cement, 700g talcum powder, 2.5kg of the above-mentioned obtained mixture fermentation product filter cake, add 5L mass fraction of 22% calcium chloride In a plastic bucket, stir and mix with a wooden stick for 12 minutes to obtain component A of cement-based repair mortar; measure ...

example 3

[0023] Weigh 4 kg of corn stalks, add them to a straw grinder, and crush them for 20 minutes. Pour the obtained straw powder into a fermenter filled with 6 L of deionized water, then add 0.8 kg of secondary sedimentation tank activated sludge, 8 kg of yellow sand, and then add 5 mL of Nitrogen gas was introduced into the fermenter at a rate of 1 / min until all the air was replaced. Then, at a speed of 200r / min and a temperature of 40°C, the anaerobic closed fermentation was carried out for 7 days. After the fermentation was completed, the temperature was raised to 95°C and kept 20min, suction filtration while hot, remove the filtrate, and obtain the mixed fermentation product filter cake; weigh 6kg cement, 800g talcum powder, 3kg of the above-mentioned obtained mixture fermentation product filter cake, add 6L of plastics with a mass fraction of 25% calcium chloride solution In the bucket, stir and mix with a wooden stick for 15 minutes to obtain component A of cement-based repai...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
compressive strengthaaaaaaaaaa
flexural strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method for bi-component cement-based repairing mortar, and belongs to the technical field of the building materials. The preparation method comprises the following steps: firstly smashing corn straw, and uniformly mixing with secondary sedimentation tank activated sludge, yellow sand and so on, collecting filter cakes after anerobic fermentation, and mixing the filter cakes with the cement, talcum powders and calcium chloride solution according to the proportion and obtaining a component A, calcining rice husks in the high temperature after fermentation, dissolving the calcined rice husk ash in sodium hydroxide solution, removing impurities through filtering, spin-steaming, concentrating and obtaining a component B, mixing the component A and the component B according to the proportion in use, and obtaining the bi-component cement-based repairing mortar. The prepared repairing mortar has good interfacial compatibility with the former concrete, and can be adequately permeated into holes. The cementation is firm, and the intensity and service life of the concrete are improved.

Description

technical field [0001] The invention discloses a preparation method of two-component cement-based repair mortar, which belongs to the technical field of building materials. Background technique [0002] The concrete repair, protection and reinforcement industry is driven by the degradation, failure and defects of concrete structures. More than 500 million cubic yards of concrete are transformed in the United States each year. Most of these concretes are constructed using local raw materials of different qualities. In addition, there are problems of irregular design and disregard of construction quality in order to meet the deadline. Then repairs are inevitable. U.S. homeowners spend approximately $12 billion to $18 billion annually on repairs, protection, and reinforcement. [0003] At present, the construction of many large-scale infrastructures in my country has been completed and put into use one after another. In the next period of time, my country's construction ind...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B20/02
CPCC04B28/00C04B20/02C04B2201/50
Inventor 周丽花许洪祥
Owner CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap