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Solid waste large-mixing-amount concrete prefabricated laminated slab and preparation method thereof

A concrete and large-volume technology, applied in solid waste management, manufacturing tools, sustainable waste treatment, etc., can solve problems such as the difficulty in erecting laminated slab pipelines, increase the bonding strength of prefabricated layers and laminated layers, and relieve environmental pressure , Improving impermeability, improving the effect of compressive strength in the later stage

Active Publication Date: 2021-05-07
中国建筑东北设计研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prefabricated laminated slab provided by the present invention is prepared by using concrete with a large amount of solid waste, which provides a new channel for industrial solid waste to be absorbed, and relieves the pressure on environmental protection. The difficulty of erecting plywood pipelines can also increase the bonding strength of prefabricated layers and laminated layers

Method used

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  • Solid waste large-mixing-amount concrete prefabricated laminated slab and preparation method thereof
  • Solid waste large-mixing-amount concrete prefabricated laminated slab and preparation method thereof
  • Solid waste large-mixing-amount concrete prefabricated laminated slab and preparation method thereof

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preparation example Construction

[0036] The present invention has no special requirements for the preparation method of the concrete with a large amount of solid waste, and the above-mentioned components can be uniformly mixed by using a method well known in the art. The present invention uses the concrete described in the above scheme to prepare prefabricated laminated panels, which can promote the multi-scale channel consumption of bulk industrial solid waste, and realize the "dual integration" of prefabricated buildings and solid waste recycling in terms of technology, management and industrial chain. production fusion".

[0037] The prefabricated laminated concrete slab with a large volume of solid waste provided by the present invention includes a prefabricated layer and a laminated layer, and a reinforcement cage is arranged in the prefabricated layer. In the present invention, the surface of one side of the prefabricated layer is provided with several transverse grooves and several longitudinal grooves...

Embodiment 1

[0064] A kind of concrete with a large amount of solid waste, the preparation raw material is: cement 370kg / m 3 , primary fly ash 41kg / m 3 , tailings waste rock 950kg / m 3 , activated iron tailings 20kg / m 3 , tailings fine sand 870kg / m 3 , water 165kg / m 3 , additives (including polycarboxylate water reducer, cellulose ether and dextrin, of which polycarboxylate water reducer 4kg / m 3 , cellulose ether is 0.15% of the quality of polycarboxylate water reducer, dextrin is 1.5% of the quality of polycarboxylate water reducer);

[0065] Among them, the tailings and waste rocks are continuously graded from 5 to 20 mm, the cement is P O42.5 ordinary Portland cement, the fineness modulus of tailings fine sand is 2.1 to 2.2, and the average particle size of activated iron tailings is 10 μm the following.

[0066] The above components were mixed to obtain concrete, and the concrete was naturally cured, and its performance was tested. The results are shown in Table 1:

[0067] Table...

Embodiment 2

[0070] The solid waste large-volume concrete in Example 1 is used to prepare a laminated slab, the laminated slab includes a prefabricated layer and a laminated layer, wherein the thickness of the prefabricated layer is 60 mm, the thickness of the laminated layer is 60 mm, and the surface of the prefabricated layer is provided with transverse grooves and the longitudinal groove, the notch width of the transverse groove and the longitudinal groove is 50mm, the depth is 15mm, the distance between two adjacent transverse grooves is 1 / 3 of the span of the prefabricated layer, and the distance between two adjacent longitudinal grooves 1 / 4 of the span of the prefabricated floors.

[0071] Concrete preparation steps are as follows:

[0072] (1) Clean the template, apply the release agent, and then assemble it according to the size of the laminated board to obtain the mold, brush the interface agent on the surface of the mold, then bind the steel cage, and then install the embedded pa...

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Abstract

The invention relates to the technical field of solid waste recycling and fabricated buildings, and provides a solid waste large-mixing-amount concrete prefabricated laminated slab and a preparation method thereof. The solid waste large-mixing-amount concrete prefabricated laminated slab comprises a prefabricated layer and a laminated layer, transverse grooves and longitudinal grooves are formed in the surface of the prefabricated layer, during application, the grooves can be used for erecting pipelines, the contact area of the prefabricated layer and the laminated layer can also be increased, the combination effect of new concrete and old concrete is improved, the integrity of a floor slab is enhanced, and the effect of improving the overall stress capacity of the floor slab is achieved. The prefabricated laminated slab is prepared from the solid waste large-mixing-amount concrete, efficient utilization of solid waste resources is realized, a new absorption channel is provided for industrial solid wastes, the environmental protection pressure is relieved, and the double-industry fusion of two industries, namely the prefabricated buildings and solid waste recycling, in technology, management and industry chains is realized.

Description

technical field [0001] The invention relates to the technical field of solid waste recycling and prefabricated buildings, in particular to a prefabricated laminated concrete slab with a large amount of solid waste and a preparation method thereof. Background technique [0002] For many years, China's sand and gravel aggregates have been mostly collected naturally, and the phenomenon of random mining and indiscriminate excavation is relatively prominent, which has a great impact on the ecological environment. The existing prefabricated laminated panels are mainly prepared by using natural sandstone aggregate and cement as the main raw materials. With the development of the times, China's economy has shifted from a stage of high-speed growth to a stage of high-quality development, and more attention has been paid to the sustainable development of "green water and green mountains". Natural sand and gravel aggregate resources are becoming increasingly scarce, and the price cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/04B28B11/24B28B13/06B28B23/02C04B28/00
CPCB28B23/02B28B1/045B28B11/245B28B13/06C04B28/00C04B18/08C04B18/12C04B24/38C04B24/383C04B2103/302B28B11/0863B28B19/0015C04B28/02C04B2111/00612Y02W30/91C04B18/14C04B18/142C04B40/0067C04B40/0259B28B1/08B28B23/22C04B28/021
Inventor 顾晓薇张信龙高育欣李晓慧张伟峰李张苗刘剑平刘庆东
Owner 中国建筑东北设计研究院有限公司
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