Metal-ceramic concrete with high impact resistance at ultra-high temperature

A cermet and concrete technology, applied in the field of cermet concrete, can solve the problems of poor high-temperature ablation resistance and strength decline, and achieve the effects of high compressive strength, reduced internal expansion, and high stability

Active Publication Date: 2017-12-15
TAIYUAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a cermet concrete resistant to strong impact at ultra-high temperature, which has a strength of C30-C80 and a slump of 160mm-220mm at about 1300°C, which overcomes the poor performance of traditional concrete against high-temperature ablation and high temperature. The disadvantage of severe drop in lower strength can also meet the pumping requirements

Method used

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  • Metal-ceramic concrete with high impact resistance at ultra-high temperature

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Experimental program
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Effect test

Embodiment 1

[0037] Each cubic meter of cermet concrete contains 500kg of cementitious materials (including 380kg of cement and 120kg of bauxite), 950kg of cermet coarse aggregate, 715kg of quartz sand fine aggregate, 180kg of water, and 7kg of polycarboxylic acid high-performance water reducer. Carbon nanotube 0.5kg, basalt fiber 8kg.

[0038] The slump of the obtained metal-ceramic concrete is 205mm, and the 28-day cubic compressive strength is 53.7MPa.

Embodiment 2

[0040] Each cubic meter of cermet concrete contains 500kg of cementitious materials (including 375kg of cement and 125kg of bauxite), 1050kg of cermet coarse aggregate, 685kg of quartz sand fine aggregate, 160kg of water, and 8.5kg of polycarboxylate high-performance water reducer , graphene 0.5kg, ceramic fiber 6kg.

[0041] The slump of the obtained metal-ceramic concrete is 185mm, and the 28-day cubic compressive strength is 67.1MPa.

Embodiment 3

[0043]Each cubic meter of cermet concrete contains 500kg of cementitious materials (including 420kg of cement and 80kg of bauxite), 1150kg of cermet coarse aggregate, 650kg of quartz sand fine aggregate, 175kg of water, and 5.5kg of polycarboxylate high-performance water reducer , nano zirconium carbide 1.5kg, carbon fiber 6kg.

[0044] The slump of the obtained metal-ceramic concrete is 200mm, and the 28-day cubic compressive strength is 56.3MPa.

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Abstract

The invention discloses a metal ceramic concrete with high impact resistance at an ultra-high temperature. The metal ceramic concrete per cubic meter contains 400-500 kg of a cementing material, 950-1150 kg of metal ceramic coarse aggregate, 660-715 kg of quartz sand or metal ceramic fine aggregate, 160-180 kg of water, 7-9 kg of a polycarboxylate superplasticizer, 0.5-2 kg of nano-powder, and 3-10 kg of high-strength fiber with high temperature resistance. The metal ceramic concrete disclosed by the invention takes metal ceramic as aggregate, and is provided with a large amount of nano-silicon powder as a mineral admixture, the polycarboxylate superplasticizer and the high-strength fiber with high temperature resistance as an internal structure of the molded material. The metal ceramic concrete has great application prospects in the fields of bridge structures, high-rise buildings, military defense and protection, nuclear power engineering, aerospace engineering and the like.

Description

technical field [0001] The invention belongs to the technical field of civil engineering concrete, and in particular relates to a cermet concrete capable of resisting strong impact under ultra-high temperature. Background technique [0002] As one of the most commonly used civil engineering materials, concrete has been widely used in various construction engineering fields. With the increasing density of urban buildings, the danger of urban building fires and the difficulty of fighting fires are increasing. With the frequent occurrence of fire accidents, continuous collapse accidents of buildings occur from time to time. At the same time, accidents caused by improper operation of some special industries related to chemical industry not only make the building structure suffer from explosion and fire attack, but also cause continuous collapse of the structure. Under some extreme service conditions, concrete not only needs to face ultra-high temperature external conditions, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/20
CPCC04B28/06C04B2111/20C04B2201/50C04B14/303C04B14/06C04B2103/302C04B14/026C04B14/4643C04B18/023C04B14/46C04B14/386C04B14/322
Inventor 马钢张玉王志勇武瑛郝小虎王占锋
Owner TAIYUAN UNIV OF TECH
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