Composite additive for concrete
A composite admixture and concrete technology, applied in the field of building material admixtures, can solve a single problem and achieve the effect of improving crack resistance
Inactive Publication Date: 2009-08-26
深圳市禹克砼建材有限公司
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0010] Traditional concrete admixtures often only have a single function, such as waterproofing agent, which can only improve the waterproof function of concrete, and to prolong the setting time of concrete, it is necessary to add retarder
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
[0020] Embodiment 1 A concrete composite admixture is composed of the following components:
[0021] β-Naphthalene Sulfonate 25% White Sugar 0.5%
[0022] Aluminum sulfate 5% Ethylene vinyl acetate 0.1%
[0023] The rest is water.
[0024] The addition method is the same as other concrete admixtures, the addition amount is 3% of the cement weight, the measured pH value is 3.5, and the solid content is 35%.
[0025] Some performance indicators of the admixture were tested, and the results are as follows:
[0026]
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
Login to View More Abstract
The invention discloses a concrete composite admixture, which comprises the following components (mass percentage): 25-40% of β-naphthalene sulfonate, 0.5-1.5% of white sugar, 5-15% of aluminum sulfate, ethylene vinyl acetate 0.1~0.4%, the rest is water. The pH value of the concrete composite admixture is 3-4, the solid content is 26-40%, and the added amount is 2-4% of the cement weight. After strict testing of the samples, all the indicators are in line with the technical requirements of JC474-1999 first-class products, can be widely used in ordinary concrete and high-performance concrete, and can significantly improve the micro-expansion account, shrinkage reduction, water reduction and retardation of concrete and other performance.
Description
technical field [0001] The invention relates to a building material admixture, in particular to a composite admixture for concrete. Background technique [0002] In the preparation process of concrete, mortar and clean slurry, a small amount (no more than 5% of the amount of cement) is added to a product that can change the performance of concrete, mortar or clean slurry, called concrete admixture. Adding an appropriate amount of admixtures to concrete can improve the quality of concrete, improve concrete performance, reduce concrete water consumption, save cement, reduce costs, and speed up construction progress. With the advancement of technology, admixtures have become the fifth necessary material besides cement, coarse and fine aggregates, admixtures and water. Adding admixtures is an important measure to optimize the design of concrete mix ratio and improve the durability of concrete. . Therefore, the newly revised "Code for Construction of Hydraulic Concrete" (DL / T51...
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): C04B24/38C04B24/20C04B24/04C04B22/14
Inventor 邵增明
Owner 深圳市禹克砼建材有限公司