Ceramsite floating restraining and resistance reducing agent and method for reducing floating degree of ceramsite in pumped ceramsite concrete

A kind of technology of ceramsite concrete and ceramsite, which is applied to reduce the floating degree of ceramsite in pumped ceramsite concrete, and the field of ceramsite anti-floating and drag-reducing agent, which can solve the side effects of viscosifying admixtures, which have not been proposed and have poor guidance And other issues

Active Publication Date: 2015-11-11
济南四建(集团)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no research on the side effects of viscosifying admixtures, and there is no research on the adaptability of viscosifying and pumping construction and a feasible solution; With the increase of pump pressure, higher requirements are put forward for the fluidity, cohesion, stability and homogeneity of ceramsite concrete. Discussion and research on the contradictory unity of viscosity increase and drag reduction lubricity, did not propose specific technical requirements and quanti

Method used

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  • Ceramsite floating restraining and resistance reducing agent and method for reducing floating degree of ceramsite in pumped ceramsite concrete
  • Ceramsite floating restraining and resistance reducing agent and method for reducing floating degree of ceramsite in pumped ceramsite concrete
  • Ceramsite floating restraining and resistance reducing agent and method for reducing floating degree of ceramsite in pumped ceramsite concrete

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Embodiment 1: The method for measuring the floating index of ceramsite of the present invention, and the effect comparison with the conventional method for measuring the degree of stratification

[0053] 1. LC7.5 pumping ceramsite concrete mix ratio, shale ceramsite density grade is 700kg / m 3 , see Table 1.

[0054] Table 1 LC7.5 pumping ceramsite concrete mix ratio

[0055]

[0056] 2. Method for measuring floating index of ceramsite of the present invention

[0057] 1) The instrument for measuring the ceramsite floating index of the ceramsite concrete sample adopts the ceramsite floating index detection cylinder, and the ceramsite floating index detection cylinder described above (see figure 1 ): Including the upper and lower layers of interconnected square metal cylinders, that is, the upper metal cylinder 1 and the lower metal cylinder 2, the upper and lower ends of the detection cylinder are respectively equipped with metal cover plates 3, and the square side ...

Embodiment 2

[0073] Example 2: The formula 1 of ceramsite anti-floating and drag-reducing agent and its effect verification for reducing the floating degree of ceramsite in pumped ceramsite concrete

[0074] 1. The mix proportion of LC10 pumped ceramsite concrete, the prepared slump is 200mm, see Table 3.

[0075] Table 3 LC10 pumping ceramsite concrete mix ratio

[0076]

[0077] 2. Detection and evaluation of floating index of ceramsite

[0078] The ceramsite floating index detection method is the same as embodiment 1 detection method of the present invention, and the detection result of the ceramsite floating index of the ceramsite concrete whose proportioning is Table 3 is 15.1%;

[0079] Evaluate the ceramsite floating degree of the ceramsite concrete in Table 3: According to the measured ceramsite floating index, judge whether the ceramsite concrete meets the pumping construction requirements. The judgment standard is: when the ceramsite floating index is ≤5%, the ceramsite The ...

Embodiment 3

[0104] Example 3: Formula 2 of ceramsite anti-floating and drag-reducing agent and its effect verification for reducing the floating degree of ceramsite in pumped ceramsite concrete

[0105] 1. The mix ratio of LC15 pumped ceramsite concrete, the prepared slump is 220mm, see Table 5.

[0106] Table 5 LC15 pumping ceramsite concrete mix ratio

[0107]

[0108] 2. Detection and evaluation of floating index of ceramsite

[0109] Ceramsite floating index detection method is the same as embodiment 1 detection method of the present invention, and the detection result of the ceramsite floating index of the ceramsite concrete whose proportioning is Table 5 is 16.8%;

[0110] Evaluate the ceramsite floating degree of the ceramsite concrete in Table 3: According to the measured ceramsite floating index, judge whether the ceramsite concrete meets the pumping construction requirements. The judgment standard is: when the ceramsite floating index is ≤5%, the ceramsite The concrete meet...

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Abstract

The invention provides a ceramsite floating restraining and resistance reducing agent and a method for reducing the floating degree of ceramsite in pumped ceramsite concrete. A method for detecting the ceramsite floating index for representing the floating degree of the ceramsite is provided, a reverse vibrating treatment measure and a reverse secondary hitting method are adopted, operation is easy and fast, and the result reliability is high. According to the ceramsite floating restraining and resistance reducing agent and the method applying the ceramsite floating restraining and resistance reducing agent to reducing the floating degree of the ceramsite in the pumped ceramsite concrete, pumping resistance can be effectively lowered, the pumping and lubricating effect can be improved, the pumping speed can be increased, pumping pressure can be lowered, and the percent of the slump of the ceramsite concrete doped with the ceramsite floating restraining and resistance reducing agent to the slump of ceramsite concrete without being doped with the ceramsite floating restraining and resistance reducing agent is not lower than 90%.

Description

technical field [0001] The invention belongs to the fields of ceramsite concrete preparation control technology and ceramsite concrete working performance detection method, and relates to a ceramsite buoyancy-reducing agent and a method for reducing the ceramsite floating degree in pumped ceramsite concrete. Background technique [0002] With the continuous improvement of the country's energy-saving and environmental protection requirements for buildings, more and more building floors are designed with lightweight concrete to reduce their own weight and achieve the effect of thermal insulation and sound insulation. As a kind of lightweight concrete with good thermal insulation, heat insulation and sound insulation properties, ceramsite concrete has gradually been widely used in construction projects, but due to the low density of ceramsite as a coarse aggregate (the apparent density is generally not more than 1500kg / m 3 ), there is a large density difference between cerams...

Claims

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Application Information

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IPC IPC(8): C04B24/38G01N15/00
Inventor 李海波曹晓岩邢庆毅宫文晋张冬陈朋强
Owner 济南四建(集团)有限责任公司
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