A kind of lightweight high-strength ceramsite concrete and its preparation method and application

A high-strength ceramsite and concrete technology, applied in the field of building materials, can solve problems such as the difficulty of lightweight and high-strength ceramsite concrete materials, and achieve the effects of increasing self-weight, increasing compactness, and improving homogeneity

Active Publication Date: 2021-12-21
HEFEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem of difficulty in preparing lightweight high-strength ceramsite concrete materials in the prior art, one of the purposes of the present invention is to provide a light-weight high-strength ceramsite concrete

Method used

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  • A kind of lightweight high-strength ceramsite concrete and its preparation method and application
  • A kind of lightweight high-strength ceramsite concrete and its preparation method and application
  • A kind of lightweight high-strength ceramsite concrete and its preparation method and application

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preparation example Construction

[0038] Preparation of fly ash ceramsite: Mix 200 parts of fly ash, 6 parts of activator, 6 parts of co-solvent, and 3 parts of foaming agent evenly, then add them to the granulator to form granules, and maintain them in a standard curing room for 28 days . The river sand is Class II river sand that meets GB / T 14684-2011; the river sand refers to Class II river sand that meets GB / T 14684-2011; machine-made sand refers to Class II river sand that meets GB / T14684-2011 Machine-made sand. The fineness modulus of river sand is 1.4, and the apparent density is 2700kg / m 3 , bulk density 1360kg / m 3 , porosity 41.5%; machine-made sand modulus 3.3, apparent density 2690kg / m 3 , bulk density 1620kg / m 3 , porosity 38.7%; Jiangsha has a fineness modulus of 1.2 and an apparent density of 2410kg / m 3 , Bulk density 1490kg / m 3 , porosity 42.3%;

[0039] The cement is P.O 425 cement or P.II525 Portland cement that meets the requirements of GB175-2007; the ultra-fine modified fly ash is gr...

Embodiment 1

[0048] The preparation method of lightweight high-strength ceramsite concrete comprises the following steps:

[0049] S1. After pre-wetting 445kg of coarse aggregate, dry it until the surface is dry and the interior is saturated with water absorption;

[0050] S2, mixing the coarse aggregate treated in S1 with 607kg fine aggregate for 90s;

[0051] S3. Add 445kg of gelling material to the mixed material after S2 treatment, and stir for 30s;

[0052] S4. Slowly add the aqueous solution prepared by adding 10 kg of polycarboxylate water reducer to the mixed material mixed in S3, and stir for 60 seconds to prepare lightweight high-strength ceramsite concrete;

[0053] The cementitious materials include 400kg cement and 45kg superfine modified fly ash;

[0054] Coarse aggregate includes 445kg fly ash ceramsite;

[0055] Fine aggregate includes 217kg slag and 390kg river sand; the volume of slag accounts for 50% of the total volume of fine aggregate;

[0056] The dosage of the a...

Embodiment 2

[0058] The preparation method of lightweight high-strength ceramsite concrete comprises the following steps:

[0059] S1. After pre-wetting 445kg of coarse aggregate, dry it until the surface is dry and the interior is saturated with water absorption;

[0060] S2, mixing the coarse aggregate treated in S1 with 676kg fine aggregate for 30s;

[0061] S3. Add 445kg of gelling material to the mixed material after S2 treatment, and stir for 90s;

[0062] S4. Slowly add an aqueous solution prepared by adding 8.5kg of polycarboxylate water reducer to the mixed material mixed in S3, and stir for 60 seconds to prepare lightweight high-strength ceramsite concrete;

[0063] The cementitious materials include 400kg cement and 45kg superfine modified fly ash;

[0064] Coarse aggregate includes 445kg fly ash ceramsite;

[0065] Fine aggregate includes 130kg slag and 546kg river sand; the volume of slag accounts for 30% of the total volume of fine aggregate;

[0066] The dosage of the ad...

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Abstract

The invention relates to a light-weight high-strength ceramsite concrete and its preparation method and application, and relates to the field of building materials. It consists of the following components in parts by weight: 400-530 parts of cementitious material; 650-850 parts of aggregate; 6.8-21 parts of admixture; 160-220 parts of water; the coarse aggregate is fly ash ceramsite; the fine aggregate is composed of slag and sand; Acid superplasticizer and enhancer. In the present invention, ultra-fine modified fly ash, cement and active silicon micropowder are used as cementing materials; slag and river sand are used as fine aggregate; fly ash ceramsite is used as coarse aggregate to prepare lightweight and high-strength prefabricated components. The problem of delamination of ceramsite concrete caused by low ceramsite density is effectively solved, and the prepared ceramsite concrete has high strength, is convenient for actual construction operation, and effectively utilizes solid waste, which is beneficial to environmental protection.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a lightweight high-strength ceramsite concrete and its preparation method and application. Background technique [0002] With the continuous expansion and development of urban buildings, the ecological environment is increasingly on the agenda. Prefabricated buildings are in line with the development trend of my country's environment, and the development trend of green buildings has become increasingly important. [0003] At this stage, the prefabricated concrete components used in most projects are suitable for residential structures with small spans. The structural forms of high-rise buildings and super high-rise buildings in my country's construction industry, bridge engineering, railway engineering and water conservancy projects are developing rapidly. These structural forms have problems such as self-weight and span, and the technical requirements for prestressed concrete c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/08C04B40/00C04B18/02C04B111/40C04B22/08C04B18/08
CPCC04B28/04C04B40/0028C04B18/027C04B2111/40C04B2201/20C04B2201/50C04B18/08C04B18/10C04B14/068C04B2103/302C04B14/062C04B22/00C04B22/062C04B22/145C04B22/147C04B22/04Y02W30/91
Inventor 姚华彦吴启一陈传明代领王静峰刘玉亭刘文博代义磊田野陈刚
Owner HEFEI UNIV OF TECH
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