Quick setting and rapid hardening non-shrinkage anti-disturbance self-compacting concrete and preparation method thereof

A technology of self-compacting concrete without shrinkage, which is applied in the field of fast-setting rapid-hardening non-shrinkage anti-disturbance self-compacting concrete and its preparation, and can solve the problems of low early strength, long interval between initial setting and final setting, etc.

Inactive Publication Date: 2017-09-01
张彬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to achieve the above technical purpose, the present invention greatly improves the early strength, anti-disturbance, crack resistance, durability and self-compacting properties of concrete by optimizing the ratio and

Method used

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  • Quick setting and rapid hardening non-shrinkage anti-disturbance self-compacting concrete and preparation method thereof
  • Quick setting and rapid hardening non-shrinkage anti-disturbance self-compacting concrete and preparation method thereof
  • Quick setting and rapid hardening non-shrinkage anti-disturbance self-compacting concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0046] Example 1 and Example 2 are quick-setting, quick-hardening, non-shrinkage and disturbance-resistant self-compacting concrete with different aggregate sizes and dosages.

[0047] During the preparation, the cement is selected from the "Jinyu" brand cement 42.5 cement produced by Ordinary Silicate Liulihe Cement Plant, the sulphoaluminate cement is the sulphoaluminate cement 42.5 cement produced by Polar Bear Company, and the admixtures are commonly used concrete additives produced abroad. .

[0048] In the present invention, the additives are: polycarboxylic acid water reducer, cellulose ether, retarder, early strength agent, expansion agent, shrinkage reducer, coagulant and defoamer; the mixed material is: heavy calcium powder, Quartz stone powder, silica fume powder, slag powder and fly ash powder;

[0049] The fine aggregate is: sand; the coarse aggregate is: stone.

[0050] Classification of cement strength grade:

[0051] In accordance with the provisions of GB175-2007 "Gen...

Example Embodiment

[0059] Example two

[0060] A fast-setting, fast-hardening, non-shrinkage, anti-disturbance, self-compacting concrete, and its raw materials include the following components by weight:

[0061]

[0062]

[0063] The preparation method of the fast-setting, fast-hardening, non-shrinkage, anti-disturbance and self-compacting concrete of the present invention is as follows: according to the weight ratio of the components, each component is added to the mixer in proportion, and mixed uniformly to obtain fast-setting, fast-hardening, non-shrinkage, anti-disturb Dense concrete.

[0064] The following is the external inspection report of the fast-setting, fast-hardening, non-shrinkage and anti-disturbance self-compacting concrete performance.

[0065] Test items Test results Collapse expansion 800mm Initial setting time (min) 18min 1h compressive strength (Mpa) 15.2Mpa 2h compressive strength (Mpa) 22.0Mpa 24h compressive strength (Mpa) 36.0Mpa 28d compressive strength (Mpa) 5312Mpa...

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Abstract

The invention relates to quick setting and rapid hardening non-shrinkage anti-disturbance self-compacting concrete and a preparation method thereof. Raw materials contain the following ingredient (by weight): 100-450 parts of cement, 20-70 parts of gypsum, 150-450 parts of fine aggregate, 200-600 parts of crude aggregate, 10-30 parts of fly ash, 10-50 parts of heavy calcium powder, 10-50 parts of silica fume, 10-50 parts of slag powder, 10-50 parts of quartz powder, 1-5 parts of a water reducer, 0.1-0.8 part of cellulose ether, 0.05-1.0 part of a retarder, 0.1-1.0 part of a coagulation accelerator, 0.5-2.0 parts of an antifoaming agent, 0.5-2.05 parts of an early strength agent, 0.5-5.0 parts of an expanding agent, 1.0-5.0 parts of a shrinkage reducing agent, 0.2-1.0 part of anti-crack fiber, and 50-200 parts of water. Through an optimum mixture ratio and by the use of a polycarboxylate superplasticizer, the early strength agent and other additives, properties such as early strength, disturbance rejection, crack resistance, durability, self-compaction and the like of concrete are greatly enhanced, and disadvantages of low early strength, long time interval of initial set and final set and the like of common concrete are solved.

Description

Technical field [0001] The invention relates to a fast-setting, fast-hardening, non-shrinkage, disturbance-resistant, self-compacting concrete and a preparation method thereof, and belongs to the engineering technical field of bridges, roads, railways and other concretes of different thicknesses requiring rapid repair and maintenance. Background technique [0002] Concrete is one of the most important civil engineering materials in modern times, and it is also the most widely used man-made building material in the world. It is widely used in highways, railways, bridges, tunnels and underground projects. With the rapid economic development, the traffic flow in various places is also increasing, the load of cars and vehicles has increased, and some cars are overloaded, and environmental erosion. The diseases of roads, bridges and tunnels made of concrete have become more and more serious, which can no longer meet the current traffic requirements. , There is an urgent need for timel...

Claims

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Application Information

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IPC IPC(8): C04B28/14
CPCC04B28/14C04B2111/72C04B7/02C04B7/32C04B14/06C04B14/04C04B18/08C04B14/28C04B18/12C04B24/24C04B24/386C04B24/04C04B22/10C04B22/143C04B2103/50C04B2103/302
Inventor 张彬李金锁尹鹏
Owner 张彬
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