Cement-based wallboard having large hollow ratio and ultrahigh toughness as well as preparation method of cement-based wallboard
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A technology with ultra-high toughness and hollowness, which is applied in the field of cement-based wallboard with large hollowness and ultra-high toughness and its preparation, which can solve the problems of short life, poor toughness, and heavy weight, and achieve light weight, high toughness, and low self-weight. volume effect
Active Publication Date: 2020-02-11
CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD +1
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[0003] The present invention mainly overcomes the deficiencies in the prior art, and proposes a large hollow rate ultra-high toughness cement-based wallboard and its preparation method. The prepared composite wallboard has th
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Embodiment 1
[0033] A large hollow rate ultra-high toughness cement-based wallboard, which is composed of the following parts by weight of raw materials: 500 parts of ordinary Portland cement, 500 parts of mineral admixtures, 50 parts of sulphoaluminate cement, 50 parts of ultrafine powder, 60 parts of porous material, 300 parts of quartz powder, 25 parts of polypropylene fiber, 0.13 parts of cellulose ether, 6 parts of water reducing agent, 0.15 parts of defoamer, and 300 parts of water.
[0034] A large hollow rate ultra-high toughness cement-based wallboard section structure is as figure 1 , Its hollow rate is 73.54%.
Embodiment 2
[0036] A cement-based wallboard with large hollow rate and ultra-high toughness, composed of the following parts by weight: ordinary Portland cement 600 parts, mineral admixtures 400 parts, sulphoaluminate cement 30 parts, sodium carbonate 5 parts, borax 5 parts, 80 parts of superfine powder, 70 parts of porous material, 350 parts of quartz powder, 30 parts of polyethylene fiber, 0.1 part of cellulose ether, 5 parts of water reducing agent, 0.13 part of defoaming agent, 320 parts of water.
[0037] A large hollow rate ultra-high toughness cement-based wallboard section structure is as figure 2 , Its hollow rate is 73.85%.
Embodiment 3
[0039] A large hollow rate ultra-high toughness cement-based wallboard, which is composed of the following parts by weight of raw materials: 450 parts of ordinary Portland cement, 550 parts of mineral admixtures, 40 parts of sulphoaluminate cement, and 90 parts of superfine powder. 85 parts of porous material, 400 parts of quartz powder, 20 parts of polyacrylonitrile fiber, 0.2 parts of cellulose ether, 4 parts of water reducing agent, 0.13 parts of defoaming agent, 350 parts of water.
[0040] A large hollow rate ultra-high toughness cement-based wallboard section structure is as image 3 , Its hollow rate is 78.06%.
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Abstract
The invention discloses a cement-based wallboard having a large hollow ratio and ultrahigh toughness. The cement-based wallboard having the large hollow ratio and ultrahigh toughness comprises components in parts by weight as follows: 450-650 parts of cement, 450-650 parts of a mineral admixture, 30-60 parts of a setting time adjusting agent, 50-90 parts of superfine micropowder, 50-80 parts of aporous material, 20-30 parts of fiber, 0-0.3 part of a water retention and thickening material, 4-12 parts of an additive, 280-350 parts of water and 400-700 parts of fine aggregate. A setting time adjusting agent compounding technology is adopted in the mix proportion, the setting time of the cement-based wallboard is adjusted by the compounded setting time adjusting agent, and the volume stability of a hardened body can be improved while the activity of the admixture is activated by an activator in the compounded setting time adjusting agent. The cement-based wallboard having the large hollow ratio and ultrahigh toughness has high toughness, high strength and excellent workability and durability, and the ultra-long service life meets the requirement of future development.
Description
Technical field [0001] The invention relates to a cement-based wallboard with large hollow rate and ultra-high toughness and a preparation method thereof, and belongs to the technical field of building materials. Background technique [0002] Traditional concrete materials are brittle and easy to crack, which seriously affects the service life of building structures. Ultra-high toughness cement-based composite materials have the characteristics of high toughness, high strength, and high durability, which are in line with the development trend of today's building materials. Using them to replace traditional concrete materials can bring good comprehensive benefits. The large hollow rate prefabricated wallboard prepared based on the high-toughness cement composite material can further reduce the weight and volume of the building structure prepared by the ultra-high toughness cement-based composite material, reduce the comprehensive cost of the building, and significantly improve the...
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