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A prefabricated component high-strength concrete and its preparation method and maintenance method

A high-strength concrete and prefabricated technology, applied in the field of construction, can solve the problems of poor durability and long-term performance, low concrete strength, etc., and achieve the effects of increased strength, excellent reinforcement, and good frost resistance

Active Publication Date: 2018-04-17
CHONGQING CONSTR RESIDENTIAL ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned problems in the prior art, the present invention proposes a preparation method of high-strength concrete for prefabricated components. The present invention solves the existing technology of low strength, poor durability and long-term performance of concrete used to manufacture prefabricated components question

Method used

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  • A prefabricated component high-strength concrete and its preparation method and maintenance method
  • A prefabricated component high-strength concrete and its preparation method and maintenance method
  • A prefabricated component high-strength concrete and its preparation method and maintenance method

Examples

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Effect test

Embodiment 1

[0022] A prefabricated component of high-strength concrete, the amount of raw materials per cubic meter of concrete is as follows: slag: 480kg, basalt: 969kg, medium sand: 876kg, water glass: 94kg, water: 93kg, copper-plated micro-steel fiber: 98kg, silica fume : 28kg, polycarboxylate high-performance water reducer: 6.8kg; the specific surface area of ​​slag is 456m 2 / kg, the density of slag is 2.91~2.92g / cm 3 . The maximum particle size D of basalt max =10mm, and the basalt is continuously graded from 5 to 10mm. The fineness modulus of the medium sand is 2.37, passed through a 4.75 sieve, and the apparent density is 2687kg / m 3 , bulk density is 1642kg / m 3 , the mud content is 1.0%. Water glass modulus M = 1.25, sodium oxide equivalent Na in water glass 2 O% is 4.0%. The copper-coated microsteel fibers have an aspect ratio of 65. The specific surface area of ​​silica fume is 20000m 2 / kg.

[0023] A method for preparing high-strength concrete for prefabricated compo...

Embodiment 2

[0026] A prefabricated component of high-strength concrete, the amount of raw materials per cubic meter of concrete is as follows: slag: 520kg, basalt: 939kg, medium sand: 850kg, water glass: 102kg, water: 100kg, copper-plated micro-steel fiber: 98kg, silica fume : 28kg, polycarboxylate high-performance water reducer: 7.4kg. All the other parts are the same as in Example 1.

Embodiment 3

[0028] A prefabricated component of high-strength concrete, the amount of raw materials per cubic meter of concrete is as follows: slag: 560kg, basalt: 911kg, medium sand: 825kg, water glass: 110kg, water: 107kg, copper-plated micro-steel fiber: 98kg, silica fume : 28kg, polycarboxylate high-performance water reducer: 7.9kg. All the other parts are the same as in Example 1.

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Abstract

The invention discloses assembling type member high-strength concrete and a preparing method and maintaining method thereof.The concrete of each cubic meter is prepared from, 480-640 kg of slag, 852-969 kg of coarse aggregate, 8-771 kg of fine aggregate, 94-126 kg of alkali components, 93-121 kg of water, 0-117 kg of steel fiber, 0-56 kg of active mineral materials and 6.8-9.0 kg of a water reducing agent.The water reducing agent is a high-performance polycarboxylic acid water reducing agent.By adding the alkali components, the steel fiber, the active mineral materials and the water reducing agent and by adopting the technology measures of steam maintenance, the mechanical property, the endurance property and the long-term performance of the concrete used for prefabricating assembling type members can be improved remarkably.The practicality of the prefabricated assembling type members is higher, the use range is wider, shock resistance and integrality of buildings using the assembling type members can be better, and the service life of the buildings can be longer; moreover, the slag is adopted for replacing cement, the waste resource recycle rate is increased, and the concrete has great practical significance.

Description

technical field [0001] The invention belongs to the field of construction, in particular to a prefabricated component high-strength concrete and a preparation method thereof. Background technique [0002] The construction industry is the pillar industry of our country's national economy and plays a pivotal role in the development of our country's economy. In the past, cast-in-place concrete was generally used in the construction industry. The industry has encountered great challenges. The shortcomings of cast-in-place concrete are also becoming more and more obvious. Due to the on-site construction of cast-in-place concrete, the requirements for the construction site are very high. The site construction requires a variety of mechanical equipment, requires a large labor force, and produces a lot of construction waste on the construction site. , not only construction waste but also the construction process of cast-in-place concrete have adverse effects on the environment, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B40/02C04B18/14C04B22/08C04B14/48
CPCC04B28/006C04B40/024C04B2201/50C04B18/141C04B22/08C04B14/14C04B14/02C04B14/48C04B18/146C04B2103/302Y02W30/91
Inventor 曾凡贵黄煌陈科陈怡宏张意于泽东段文川
Owner CHONGQING CONSTR RESIDENTIAL ENG
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