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Formula and preparation method for concrete used for bridge construction

A bridge construction and concrete technology is applied in the field of concrete formulation and preparation for bridge construction, which can solve the problems of pumping efficiency, reduce construction efficiency, poor fluidity, etc. Effect

Active Publication Date: 2019-04-02
温州嘉豪建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned pumping concrete is only composed of cement, sand, gravel and water, and its fluidity is poor, which will affect the pumping efficiency, thereby reducing the construction efficiency, and needs to be improved

Method used

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  • Formula and preparation method for concrete used for bridge construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A concrete for bridge construction, the raw material components are as shown in Table 1 in parts by weight.

[0036] Wherein, the preparation method of this concrete comprises the following steps:

[0037] Step 1, taking Portland cement, sulphoaluminate cement, phosphate cement, fly ash, polycarboxylate superplasticizer and calcium gluconate by weight, stirring evenly;

[0038] Step 2, continue to add water, lauramide sulfobetaine and perfluoropolyether with a degree of polymerization within 100 (DuPont, USA), and stir evenly.

Embodiment 2

[0040] The difference from Example 1 is that, in parts by weight, the raw material components are as shown in Table 1.

Embodiment 3

[0042] The difference from Example 1 is that, in parts by weight, the raw material components are as shown in Table 1.

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Abstract

The invention discloses a formula and a preparation method for concrete used for bridge construction, and relates to the field of civil engineering. The concrete has the formula which comprises the following raw materials by weight: 320 to 350 parts of cement, 60 to 65 parts of fly ash, 15 to 16 parts of a water reducing agent, 0.1 to 0.3 part of a retarder and 150 to 160 parts of water. The concrete provided by the invention has the following advantages: the fly ash contains a large number of glass spheres, exerts the effects of a ball bearing and significantly reduces the yield shear stressof a mixed material; thus, through addition of the fly ash into the concrete, the continuity of a concrete mixture slurry can be improved, and the fluidity of the concrete mixture slurry is improved.The water reducing agent is a concrete admixture which can reduce the usage amount of water for mixing under the condition that the slump of the concrete is maintained to be substantially unchanged, has a dispersing effect on cement particles, can improve the workability of the cement particles, and improves the fluidity of the concrete.

Description

technical field [0001] The invention relates to the field of civil engineering materials, more specifically, it relates to a concrete formula for bridge construction and a preparation method thereof. Background technique [0002] The concrete used in bridge construction is usually pumped concrete. The pumped concrete is to use the pressure of the concrete pump to directly transport the concrete to the pouring site through the pipeline. It can complete horizontal and vertical transportation at one time, and it can be continuously poured with a placing boom. Pumping concrete has the advantages of large conveying capacity, fast speed, high degree of mechanization, saving manpower, and reducing the labor intensity of workers. [0003] The patent with the notification number CN104196241B discloses a construction method for pumping concrete. The construction method includes the following steps: Step 1, configuring pumping concrete; the pumping concrete is composed of the following...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34
CPCC04B28/34C04B2201/50C04B18/08C04B7/02C04B7/32C04B24/24C04B24/06C04B24/16C04B24/32
Inventor 谢昌波吴春同李正旦王锋
Owner 温州嘉豪建设有限公司
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