Concrete with common strength and high elastic modulus and preparation method thereof

A technology with high elastic modulus and high strength, applied in the field of building materials, can solve the problems of poor resistance to deformation, low elastic modulus, poor shrinkage deformation, etc., and achieve the effect of improving interface performance, improving compactness and reducing segregation

Active Publication Date: 2017-03-22
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low elastic modulus and poor deformation resistance of ordinary-strength concrete in the prior art, and difficulties in construction, poor shrinkage and deformation, and temperature rise in high-strength concrete, the present invention provides an ordinary-strength high-elastic modulus Concrete and its preparation method can realize the elastic modulus of C40-C50 concrete above 50GPa, and have excellent construction performance and durability

Method used

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  • Concrete with common strength and high elastic modulus and preparation method thereof
  • Concrete with common strength and high elastic modulus and preparation method thereof
  • Concrete with common strength and high elastic modulus and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In Example 1, the nanomaterial is composed of graphene and nano whiskers, and the mass ratio is 20:80; the sand is composed of quartz sand and silicon carbide, and the mass ratio is 40:60; the crushed stone is composed of granite and brown corundum. Composition, the mass ratio is 40:60; the water reducer is a carboxylic acid type water reducer.

Embodiment 2

[0041] In Example 2, the nanomaterial is composed of carbon nanotubes and nano-calcium carbonate, and the mass ratio is 10:90; the sand is quartz sand; the gravel is composed of basalt and brown corundum, and the mass ratio is 25:75; The water agent is a carboxylic acid water reducer.

Embodiment 3

[0042] In Example 3, the nanomaterial is composed of nano-calcium carbonate and nano-whiskers, and the mass ratio is 90:10; the sand is composed of river sand and brown corundum, and the ratio is 20:80; the crushed stone is granite; the water reducing agent It is an aliphatic water reducer.

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PUM

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Abstract

The invention discloses concrete with common strength and high elastic modulus and a preparation method thereof. The concrete with common strength and high elastic modulus, disclosed by the invention, is prepared from the following components in parts by mass: 100 parts of cement, 30-100 parts of an admixture, 1-10 parts of a nano material, 0.1-2 parts of a viscosity modifier, 200-600 parts of sand, 300-800 parts of crushed stones, 10-60 parts of fibers, 0.5-5 parts of a water reducing agent, 0.1-0.5 part of a powder dispersant and 50-90 parts of water. After the concrete with common strength and high elastic modulus, disclosed by the invention, is subjected to standard curing or natural curing for 28d, the strength grade of the concrete is C40-C50, and the elastic modulus can reach 50GPa or more; and the concrete has excellent working performance and endurance performance.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to concrete, in particular to a common-strength high-elastic-modulus concrete and a preparation method thereof. Background technique [0002] The modulus of elasticity is a scale to measure the ability of an object to resist elastic deformation, and it is one of the important performance parameters of concrete in engineering applications. Even if the concrete strength meets the design requirements and the modulus of elasticity is low, the stiffness of the concrete member will be low, and the deformation under load will be large and cannot be used normally. Especially in the structural design of super high-rise buildings, taking into account the load, wind force, and earthquake effects, it puts forward higher requirements for structural rigidity; It may be due to the different compressive stresses, resulting in large vertical deformation differences. For the steel frame-conc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/08C04B18/141C04B18/142C04B14/022C04B14/383C04B2103/44C04B14/06C04B14/324C04B14/048C04B14/303C04B14/48C04B2103/302C04B22/002C04B2103/408C04B14/026C04B14/28C04B14/068
Inventor 刘建忠张倩倩张建业沙建芳石亮韩方玉
Owner JIANGSU SOBUTE NEW MATERIALS
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