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Construction garbage concrete segment and method for producing the same

A technology for concrete blocks and construction waste, which is used in manufacturing tools, clay preparation devices, mixing operation control, etc., can solve problems such as combined use, and achieve the effect of ensuring physical and mechanical strength and durability

Inactive Publication Date: 2009-08-19
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its production method is to crush the construction waste and mix the above raw materials, add appropriate amount of water to stir evenly, and then vibrate and press it into a hollow block, and then maintain it at constant temperature. The defect is that the construction waste must be combined and used according to the gradation requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The construction waste whose weight ratio is 100% of the waste concrete is processed by a jaw crusher into recycled raw materials of construction waste with a maximum particle size of 8 mm and homogenized. First, 364.5kg (72.9% of the total amount of raw materials) of recycled construction waste raw materials are pre-wetted with mixing water (7.65kg) with a water absorption rate of 30%, and then 60.0kg (12.0% of the total amount of raw materials) of 32.5 Slag portland cement, 50.0kg (10.0% of total raw material) fly ash, 20.0kg (4.0% of total raw material) calcium carbide slag, 5.0kg (1.0% of total raw material) sodium sulfate and balance water ( 57.35kg) and stir evenly to form a mixture. Use the Taiwan vibration block forming machine to form a single-row hole construction waste concrete block with a size of 390mm×190mm×190mm, and the green body with a supporting plate is naturally cured for 28 days. Dry in a drying room at 60°C before leaving the factory, and stop dr...

Embodiment 2

[0026] The construction waste whose weight ratio is 100% of the waste brick is processed into the construction waste regeneration raw material with a maximum particle size of 8mm through a jaw crusher and homogenized. First, 385.0kg (77.0%) of construction waste recycled raw materials were pre-wetted with mixing water (34.65kg) with a water absorption rate of 60%, and then 60.0kg (12.0%) of slag portland cement with a strength grade of 32.5, 50.0kg (10.0%) fly ash, 0.2kg (0.04%) cellulose ether, 4.0kg (0.8%) calcium chloride, and surplus water (57.35kg) are stirred evenly to form a mixture. A single-row-hole construction waste concrete block with a size of 390mm×190mm×190mm was formed by a vibration block forming machine. The green body with a supporting plate was steam-cured at a temperature of 60°C for 10 hours, and then naturally cured for 28 days. Dry in a drying kiln at 40°C before leaving the factory, and stop drying when the relative moisture content is less than 45% (h...

Embodiment 3

[0029]The construction waste with waste concrete and waste bricks each accounting for 50% by weight is processed by a jaw crusher into construction waste regeneration materials with a maximum particle size of 8 mm and homogenized. First, 349.4kg (69.88%) of construction waste recycled raw materials were pre-wetted with mixing water (19.22kg) with a water absorption rate of 50%, and then 60kg (12.0%) of slag Portland cement with a strength grade of 32.5, 50kg (10.0 %) fly ash, 20kg (4.0%) of high-viscosity attapulgite clay powder, 20kg (4.0%) of quicklime powder and the remainder of water (64.78kg) were stirred evenly to form a mixture. Use the Taiwan vibration block forming machine to form a single-row hole construction waste concrete block with a size of 390mm×190mm×190mm, and the green body with a supporting plate is naturally cured for 28 days. Dry in a drying room at 50°C before leaving the factory, and stop drying when the relative moisture content is less than 40% (mediu...

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Abstract

The invention discloses a building waste concrete brick and a manufacturing method thereof. The brick is manufactured by mixing, molding, maintaining and drying regenerative raw materials of the building waste, cement, fly ash, a tackifier, a waterproof agent, an excitant and water. The regenerative raw materials of the building waste is obtained by processing waste concrete and such inorganic hard ingredients as manufactured products, waste tiles, waste stones and the like, with the maximum grain size of 8mm; the tackifier is the carbide slag, high-viscosity attapulgite clay powder, cellulose ether and the like; the waterproof agent is the products of stearate series; the excitant is quicklime powder, calcium chloride, sodium sulfate and the like. The brick of the invention prepared through the steps of raw material stirring, molding, maintaining and drying has simple technique, easy operation, low cost and stable product quality; the wall bodies built with the brick have good impermeability and anti-cracking performance. A large amount of building wastes which are low in price are utilized for the brick, thus reducing the consumption of natural resources, conforming to the strategy of sustainable development and witnessing obvious social and environmental benefits.

Description

technical field [0001] The invention relates to a construction waste concrete block and a manufacturing method thereof, belonging to the technical field of building materials. Background technique [0002] Construction waste mainly comes from the construction of new buildings, the demolition of old and dangerous buildings, the renovation of buildings, and the destruction of buildings caused by natural disasters or other reasons. Construction waste contains 60%-100% renewable resources. The research results show that the per capita annual discharge of construction waste in industrialized countries reaches 1 ton, and the recycling of construction waste can reduce the consumption of natural resources by 5%. At the same time, it can effectively improve resource and energy utilization efficiency, protect ecology and promote economic development, and make the construction industry embark on a sustainable development path. [0003] The composition of construction waste varies wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B28C7/04B28C5/00B28B1/08B28B11/24C04B18/16C04B18/08
CPCC04B2111/00293C04B2111/27C04B2111/00775C04B2111/343C04B28/02Y02W30/91C04B18/08C04B18/16C04B18/165C04B40/0067C04B40/0071C04B2103/10C04B2103/302C04B2103/44C04B14/102C04B18/141C04B22/064C04B22/124C04B22/147C04B24/085C04B24/383
Inventor 王武祥曹蓓月孙爱国
Owner CHINA BUILDING MATERIALS ACAD
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