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Concrete with pumice waste residues as aggregates and preparation method of concrete

A technology of concrete and waste residue, which is applied in the field of building materials and can solve problems such as ineffective utilization

Active Publication Date: 2020-11-24
CHINA TEST & CERTIFICATION INT GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a concrete with pumice waste as aggregate and its preparation method to solve the problem in the prior art that a large amount of pumice waste is piled up as waste and cannot be effectively utilized

Method used

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  • Concrete with pumice waste residues as aggregates and preparation method of concrete
  • Concrete with pumice waste residues as aggregates and preparation method of concrete
  • Concrete with pumice waste residues as aggregates and preparation method of concrete

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Prepare raw materials according to the following composition ratio: cement 520kg / m 3 , fly ash 97kg / m 3 , silica fume 33kg / m 3 , pumice residue 900kg / m 3 , additive 73.5kg / m 3 , wherein, in terms of mass percentage, in the additive, the water-reducing component accounts for 4.22%, the water-retaining component accounts for 0.93%, the slump-preserving component accounts for 0.93%, the thickening component accounts for 1.21%, and the lubricating component accounts for 92.71%.

[0053] Stirring the pumice waste with part of the spare water for a first preset time to obtain pre-wet pumice waste; then, mixing the pre-wet pumice waste with other remaining spare components for a second preset time to obtain a pumice waste as aggregate concrete, wherein, the first preset duration and the second preset duration can be appropriately adjusted according to the amount of prepared concrete, which is not limited in this application, for example: the first preset duration can be 1mi...

Embodiment 2

[0055] It is basically the same as the above-mentioned embodiment one, the difference is that the raw materials prepared in embodiment two include: cement 350kg / m 3 , fly ash 100kg / m 3 , silica fume 50kg / m 3 , pumice residue 1000kg / m 3 , additive 18kg / m 3 , wherein, in terms of mass percentage, in the additive, the water-reducing component accounts for 4.98%, the water-retaining component accounts for 0.80%, the slump-preserving component accounts for 0.81%, the thickening component accounts for 1.41%, and the lubricating component accounts for 92.00%.

Embodiment 3

[0057] It is basically the same as the above-mentioned embodiment one, the difference is that the raw materials prepared in embodiment three include: cement 470kg / m 3 , fly ash 90kg / m 3 , silica fume 40kg / m 3 , pumice residue 950kg / m 3 , additive 45kg / m 3 , wherein, in terms of mass percentage, in the additive, the water-reducing component accounts for 4.06%, the water-retaining component accounts for 1.2%, the slump-preserving component accounts for 1.2%, the thickening component accounts for 1.06%, and the lubricating component accounts for 92.48%.

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Abstract

The invention discloses concrete with pumice waste residues as aggregates and a preparation method of the concrete. The concrete comprises the following components: 350-550 kg / m<3> of cement, 90-100 kg / m<3> of fly ash, 30-50 kg / m<3> of silica fume, 900-1000 kg / m<3> of the pumice waste residues, 170-250 kg / m<3> of water and 15-80 kg / m<3> of an additive, wherein the additive comprises the followingcomponents in percentage by mass: 4%-5% of a water reducing component, 0.8%-1.2% of a water retaining component, 0.8%-1.2% of a slump retaining component, 1.0%-1.5% of a thickening component and 92%-93% of a lubricating component. The surfaces of the pumice waste residues do not need to be treated at all, particle size screening of the pumice waste residues is not needed either, and direct application of the pumice waste residues can be achieved.

Description

technical field [0001] The application relates to the technical field of building materials, in particular to a concrete with pumice waste residue as aggregate and a preparation method thereof. Background technique [0002] Pumice is a vitreous lava with dense pores after cooling and solidification of magmatic rocks erupted from volcanoes. The porosity of pumice can be as high as 71.8% to 81%, and the water absorption rate can reach 50% to 60%. There are a lot of pumice reserves in my country, which are mainly concentrated in Northeast China, Shanxi, Inner Mongolia and other places. According to the investigation of the volcanic groups currently in use, the pumice reserves exceed 2 billion cubic meters. In addition, pumice is an ideal natural, green and environmentally friendly material due to its light weight, high strength, acid and alkali resistance, corrosion resistance, no pollution, and no radioactivity. The application of stone in civil engineering is not only econom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/08C04B111/40
CPCC04B28/04C04B2111/40C04B2201/20C04B2201/50C04B18/08C04B18/146C04B14/16C04B24/20C04B24/283C04B24/32C04B24/383C04B24/10C04B24/24C04B14/14C04B38/08
Inventor 王阳蒋玉川吴文军王清王文卓张宇燕岳汉威高杨春郭春霞
Owner CHINA TEST & CERTIFICATION INT GRP CO LTD
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