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Steam-curing-free reactive powder concrete and preparation method thereof

A technology of powder concrete and dry powder, which is applied in the field of new concrete and its preparation, can solve problems affecting popularization and use, and achieve the effects of reducing maintenance requirements, preventing environmental pollution, and reducing use costs

Inactive Publication Date: 2015-12-16
广州华隧威预制件有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This directly affects its promotion and use

Method used

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preparation example Construction

[0024] The preparation method of non-steam curing active powder concrete comprises the following steps:

[0025] 1) Weigh raw materials according to the ratio of steam-free active powder concrete;

[0026] 2) dry mixing cement, silica fume and quartz sand;

[0027] 3) Add water and water reducing agent and stir evenly;

[0028] 4) Vibrate and disperse the reinforcing fiber well, add it evenly, and stir evenly;

[0029] 5) Pouring the stirred non-steaming-curing active powder concrete into the mould, forming the component, immediately covering the forming component with a polymer film, and placing it in the sun for curing;

[0030] 6) demoulding to obtain prefabricated parts;

[0031] Wherein, the proportion of non-steam curing active powder concrete is as above.

[0032] The white plastic film can transmit radiation energy, prevent moisture from evaporating from the concrete surface, and use the heat of hydration of cement as a second heat source. As a further improvement ...

Embodiment 1

[0034] Non-steam curing active powder concrete is composed of 30 parts of dry powder phase, 1 part of water and 1.5 parts of steel fiber, wherein the dry powder phase is composed of 80 parts of cement, 26 parts of silica fume, 135 parts of quartz sand and 0.5 part of water reducing agent.

Embodiment 2

[0036] Non-steam-cured active powder concrete is composed of 35 parts of dry powder phase, 2 parts of water and 1 part of steel fiber. Among them, the dry powder phase is composed of 75 parts of cement, 28 parts of silica fume, 130 parts of quartz sand, and 0.4 part of water reducing agent.

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Abstract

The invention discloses steam-curing-free reactive powder concrete and a preparation method thereof. The steam-curing-free reactive powder concrete consists of dry powder phase, water and reinforced fibers; and the dry powder phase consists of cement, silica fume, quartz sand and a water reducing agent. On the premise that inherent advantages of RPC (reactive powder concrete) are reserved, the steam-curing-free reactive powder concrete uses solar energy curing instead of steam curing; curing requirements are reduced greatly; energy can be saved; environmental pollution is prevented; and using cost of RPC is reduced effectively.

Description

technical field [0001] The invention relates to a novel concrete and a preparation method thereof. Background technique [0002] Reactive powder concrete (Reactive Powder Concrete, hereinafter referred to as RPC) is a super-high strength, high toughness and high durability that was first successfully developed in 1993 by a research team headed by Pierre Richard of Bouygues, one of the world's largest construction companies. Cement-based composite material with good performance and volume stability. It is the closest high-tech concrete to large-scale application in the world. [0003] RPC is an ultra-high-performance concrete prepared by high-temperature heat-bonding of ultra-fine-grained dense materials and fiber-reinforced materials. Its components include cement, quartz sand, steel fibers, special admixtures and admixtures. The characteristics of its material are that no coarse aggregate (crushed stone) is used, which improves the uniformity of concrete; the addition of ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B40/02
Inventor 赵晖赖伟文詹国良林东沈云泽刘冠升蔡国贤李康安黎向平文梓芸陈杰陶仁成叶门康
Owner 广州华隧威预制件有限公司
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