A segregated concrete regulating modifier that is easily dispersed and can be used in construction sites
A construction site and concrete technology, applied in the field of concrete, can solve the problem that segregated concrete cannot be adjusted quickly, and achieve the effects of being convenient for wide-scale promotion, not damaging durability, and simple manufacturing process
Active Publication Date: 2020-10-30
HUNAN CSCEC5B CONCRETE +1
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to provide a kind of segregated concrete adjustment modifier that can be easily dispersed and used in the construction site. The adjustment modifier of the present invention has good dispersibility and can effectively solve the difficult problem that segregated concrete cannot be adjusted quickly at the construction site. At the same time, it can increase Concrete compactness, enhance the mechanical properties of concrete
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0016] Example 1: Using the isolated concrete adjusting modifier of the present invention to adjust the isolated bleeding C30 and C50 concrete on the construction site.
[0017] An easily dispersible segregated concrete that can be used in construction sites to adjust the mass ratio of modifier components:
[0018] Hydroxypropylmethylcellulose Low polymerization degree polyvinyl alcoholNano SiO 2
Silica Fume cement Metakaolin 1.30.40.24.01.81.1
[0019] Wherein: the hydroxypropyl methylcellulose is a white or off-white powder, with a fineness of 150 mesh, a loss on drying of 4%, and a PH=6.
[0020] The molecular weight of the low polymerization degree polyvinyl alcohol is 37,000.
[0021] The nano SiO 2 The average particle size is 35 nm and the dispersion is good.
[0022] The specific surface area of the silica fume is 18000m 2 / kg.
[0023] The metakaolin is calcined at 680°C for 2.5 hours with a specific surface area of 2500m 2 / Kg.
[0024] The cement is PO 42.5 cement meet...
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 size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Login to View More
Abstract
A kind of segregated concrete adjustment modifier that is easy to disperse and can be used in the construction site proposed by the present invention consists of hydroxypropyl methylcellulose, polyvinyl alcohol with a low degree of polymerization, and nano-SiO 2 , silica fume, cement and metakaolin are mixed according to the mass ratio of (1‑1.5): (0.2‑0.5): (0.2‑0.4): (3.5‑5.5): (1.3‑2.5): (0.8‑1.2) The specific dosage is 0.01%-0.02% of the total mass of segregated concrete, which can be directly put into the rear of the tank truck and stirred for 60s-120s. It is convenient to adjust the segregated concrete at the construction site. The invention has good dispersibility and adaptability, can quickly restore the segregated and bleeding concrete to a good cohesive state, and at the same time has a certain promotion effect on the 28d strength of the concrete, is simple to use and operate, and is convenient for wide-scale popularization.
Description
Technical field [0001] The invention is mainly used in the concrete industry in the field of building materials, and specifically relates to a segregated concrete modifier that is easily dispersed and can be used in construction sites. The concrete modifier can adjust the workability of concrete in segregated state, and It can increase the compactness and mechanical properties of concrete. Background technique [0002] With the development of the construction industry, the concrete industry has developed rapidly. Concrete has become the most widely used construction material. The quality of concrete materials directly affects the quality and safety of construction projects. The actual quality control of concrete is more complicated. Among them, whether the mix ratio is selected correctly, the abnormal changes of raw materials, the influence of weather and temperature conditions, the excessive mixing of admixtures and the adaptability of the cement, and the excessive water consump...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B28/04
CPCC04B28/04C04B40/0039C04B2201/50C04B24/383C04B24/2623C04B14/062C04B18/146C04B14/041C04B14/06C04B14/02C04B2103/302
Inventor 李曦王军王曙冷政缪瑞波蒋震袁吉童向佳瑜裴磊
Owner HUNAN CSCEC5B CONCRETE