Unlock instant, AI-driven research and patent intelligence for your innovation.
Self-leveling mortar and use method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for self-leveling mortar and straw ash, applied in the field of building materials, can solve the problems of unsuitability of straw ash, low strength of straw ash, sanding or peeling, etc.
Inactive Publication Date: 2021-06-01
GUANGDONG BOZHILIN ROBOT CO LTD
View PDF3 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
At the same time, with the growth of crystallization, the increase of its crystal strength will cause false hardening of the mortar, resulting in high slump loss
Moreover, due to the low strength of the straw ash, it affects the surface quality of the mortar, and may also cause sanding or peeling. In addition, there is a certain amount of unburned charcoal in the straw ash, and the pore size of the unburned charcoal is concentrated in the range of 3nm to 100nm. The pores are larger than 100nm, the specific surface area is large, and the water absorption rate is large. Therefore, in fact, although the amount of straw ash is more than that of rice husk ash, and the cost is cheaper than that of rice husk ash, straw ash is not suitable for use in cement-based self-leveling mortar. , will have a certain negative impact on the performance of self-leveling 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
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0051] The preparation method of the low-temperature straw ash comprises the following steps:
[0052] Burn ordinary straw ash at 400°C-800°C for 2h-3h.
[0053] Although the low-temperature-treated straw ash has higher pozzolanic activity, its cost is also higher than that of ordinary straw ash.
[0054] Preferably, the cement is Portland cement and high alumina cement. Ordinary Portland cement and high alumina cement are used in combination, combining the advantages of the two cements to improve the early strength and improve the performance of hardened mortar. The strength of ordinary Portland cement develops slowly, and the volume deformation after hardening is large, and it is prone to shrinkage and cracking, while high-alumina cement provides early strength growth and is not easy to shrink. The combined use of the two can give play to their respective advantages, so that To achieve the purpose of improving the performance of hardened mortar.
[0055] Preferably, the w...
Embodiment 1
[0073] This embodiment provides a self-leveling mortar and its use method, the steps are as follows:
[0074] Weigh the following raw materials: 68g (about 24.82%) of 42.5 grade ordinary Portland cement, 8.5g of high alumina cement (about 3.10%), 26g of ordinary straw ash (about 9.49%), 10g of S95 grade slagpowder (about 3.65%) 10g (about 3.65%) of primary ash fly ash, 150g of river sand (about 54.74%), 1g of superplasticizer SD-600P-E (about 0.36%), 0.5g of P108 defoamer (about 0.18%) , obtained from leveling mortar.
[0075] When in use, weigh 30g of third-grade water for laboratory use, mix water and the above-mentioned raw materials in a mixer, and then start construction.
Embodiment 2
[0077] This embodiment provides a self-leveling mortar and its use method, the steps are as follows:
[0078] Weigh the following raw materials: 77g (about 18.46%) of 42.5 grade ordinary Portland cement, 21g of high alumina cement (about 5.03%), 37g of ordinary straw ash (about 8.87%), 15g of S95 grade slag powder (about 3.60%), First grade fly ash 15g (about 3.60%), river sand 250g (about 59.92%), superplasticizer SD-600P-E 1.5g (about 0.36%), P108 defoamer 0.7g (about 0.17%) , obtained from leveling mortar.
[0079] When in use, weigh 50g of third-grade water for laboratory use, mix water and the above-mentioned raw materials in a mixer, and then start construction.
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
Property
Measurement
Unit
particle diameter
aaaaa
aaaaa
size
aaaaa
aaaaa
porosity
aaaaa
aaaaa
Login to View More
Abstract
The invention relates to self-leveling mortar and a use method thereof, and relates to the field of building materials. The self-leveling mortar is prepared from the following raw materials by weight percentage; 18-30% of cement; 50-70% of aggregate; 4-15% of straw ash; 2-8% of slagpowder; 2-8% of fly ash; and 0.2-1% of an additive; wherein the particle size of the straw ash is 10 microns to 20 microns. According to the invention, the ground straw ash, the slagpowder and the fly ash are used as the admixture, so that the purpose of reducing the cement consumption is achieved on the premise of ensuring that the mortar fluidity index meets the requirement, thereby reducing the waste gas emission and the production cost, improving the resource utilization rate of the waste straw ash, and contributing power to the energy conservation and emission reduction index of the building industry.
Description
technical field [0001] The invention relates to the field of building materials, in particular to self-leveling mortar and its application method. Background technique [0002] The traditional cement-based self-leveling mortar uses cement as the main cementitious material. When the cement hydrates, a large amount of heat is released, and the volume shrinks after hardening. Due to the constraints of the external environment, tensile stress will be generated inside the mortar, resulting in After hardening, cracks will appear, accompanied by phenomena such as surface unevenness and easy floating. In addition, in the cement-based self-leveling mortar, in order to pursue high fluidity, the cement content is generally high, and a large amount of dust and waste gas will be emitted during the cement production process, causing a large amount of industrial waste to enter the environment, leading to an increasing contradiction between pollution prevention and industrial development. ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More