Reinforced C30 fly ash ceramsite concrete and preparation method thereof

A technology of fly ash ceramsite and concrete, which is applied in the field of building materials, can solve the problems of poor crack resistance and durability, low compressive and tensile strength, uneven distribution of aggregates, etc., and achieve various performance improvements, thermal insulation Excellent thermal performance and good working performance

Inactive Publication Date: 2018-06-22
ANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fly ash ceramsite concrete formed by mixing fly ash ceramsite in the concrete has the characteristics of reducing the weight of the structure, good thermal insulation performance, small heat loss, and good fire resistance, but there are also problems caused by the floating of fly ash ceramsite Uneven aggregate distribution, low compressive and tensile strength, poor compactness, poor crack resistance and durability, etc.

Method used

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  • Reinforced C30 fly ash ceramsite concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A reinforced C30 fly ash ceramsite concrete prepared from the following raw materials according to the required weight ratio, cement: steel fiber: basalt fiber: nano-SiO 2 : Fly ash ceramsite: Fine aggregate: Water: The mass ratio of water reducing agent is 1: 0.149: 0.003: 0.012: 0.733: 1.460: 0.476: 0.008.

[0033] Wherein the cement is P.O 42.5 ordinary Portland cement; the steel fiber is shear wave type, its diameter is 0.2-0.5mm, the length is 28-35mm, and the tensile strength of the steel fiber is ≥850N / mm 2 ; The length of the basalt fiber is 3-6 mm, the diameter of the monofilament is 12-16 μm, and the tensile strength is ≥ 4100 N / mm 2 ; The nano-SiO 2 It is white powder, with an average particle size of 30nm, an apparent density of 40-60g / L, a pH value of 5.0-7.0, and a loss on ignition ≤ 1% (mass fraction); wherein the impurity content is <0.5% (impurities account for The mass fraction of the total amount,);

[0034] The bulk density of fly ash ceramsite is...

Embodiment 2

[0039] A reinforced C30 fly ash ceramsite concrete prepared from the following raw materials according to the required weight ratio, cement: steel fiber: basalt fiber: nano-SiO 2 : Fly ash ceramsite: Fine aggregate: Water: The mass ratio of water reducing agent is 1: 0.130: 0.002: 0.010: 0.518: 1.277: 0.416: 0.007.

[0040] Wherein the cement is P.O 42.5 ordinary Portland cement; the steel fiber is shear wave type, its diameter is 0.2-0.5mm, the length is 28-35mm, and the tensile strength of the steel fiber is ≥850N / mm 2 ; The length of the basalt fiber is 3-6 mm, the diameter of the monofilament is 12-16 μm, and the tensile strength is ≥ 4100 N / mm 2 ; The nano-SiO 2 It is white powder, with an average particle size of 30nm, an apparent density of 40-60g / L, a pH value of 5.0-7.0, and a loss on ignition ≤ 1% (mass fraction); wherein the impurity content is <0.5% (impurities account for The mass fraction of the total amount,);

[0041] The bulk density of the fly ash ceramsit...

Embodiment 3

[0047] A reinforced C30 fly ash ceramsite concrete prepared from the following raw materials according to the required weight ratio, cement: steel fiber: basalt fiber: nano-SiO 2 : Fly ash ceramsite: Fine aggregate: Water: The mass ratio of water reducing agent is 1: 0.139: 0.002: 0.010: 0.684: 1.702: 0.444: 0.008.

[0048] Wherein the cement is P.O 42.5 ordinary Portland cement; the steel fiber is shear wave type, its diameter is 0.2-0.5mm, the length is 28-35mm, and the tensile strength of the steel fiber is ≥850N / mm 2 ; The length of the basalt fiber is 3-6 mm, the diameter of the monofilament is 12-16 μm, and the tensile strength is ≥ 4100 N / mm 2 ; The nano-SiO 2 It is white powder, with an average particle size of 30nm, an apparent density of 40-60g / L, a pH value of 5.0-7.0, and a loss on ignition ≤ 1% (mass fraction); wherein the impurity content is <0.5% (impurities account for The mass fraction of the total amount,);

[0049] The bulk density of fly ash ceramsite me...

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Abstract

The invention discloses reinforced C30 fly ash ceramsite concrete and a preparation method thereof. The concrete is prepared from cement, steel fibers, basalt fibers, nano SiO2, fly ash ceramsite, fine aggregate, a water reducing agent and water according to a required weight ratio. In the presence of the fly ash ceramsite and through the synergistic effect between the fly ash ceramsite and otherraw materials, the prepared concrete is low in mass and high in strength, and has excellent heat preservation and insulation performance, the structure is dense, and the strength, toughness and durability of the concrete are remarkably improved. Waste can be recycled, the concrete with the remarkably improved performance is obtained under the condition that a small quantity of additive exists, andgood application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a reinforced C30 fly ash ceramsite concrete and a preparation method thereof. technical background [0002] Concrete has been widely used in civil engineering, water conservancy engineering and other fields due to its rich raw materials, low price, and simple production process, and its consumption is increasing. However, with the large-scale use of concrete, various problems have also appeared. . At present, the annual consumption of concrete in my country has exceeded 2 billion tons, of which cement has reached 400 million tons, fine aggregate has reached 600 million tons, and coarse aggregate has reached 900-1000 million tons, which means that the consumption of resources and energy is huge. The amount of waste concrete has also increased significantly, and the impact on the environment has become increasingly prominent, which has seriously restricted th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/48C04B14/46C04B14/06C04B18/02
CPCC04B14/062C04B14/4643C04B14/48C04B18/027C04B28/04C04B2201/50C04B22/002C04B24/24C04B14/068
Inventor 张明景嘉骅张庆伟
Owner ANYANG NORMAL UNIV
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