阅读说明：本技术 一种环保型互锁块及其制备方法 (Environment-friendly interlocking block and preparation method thereof ) 是由 谭贺洵 张明远 胡海宏 于 2021-01-05 设计创作，主要内容包括：本发明公开了一种环保型互锁块及制作方法：除杂,棕榈油熟料、采石场粉尘的干燥、筛分；棕榈油熟料的干燥、碾磨和筛分,制成棕榈油熟料粉末；棕榈油熟料粉末、水泥、棕榈油燃料灰、采石场粉尘以及棕榈油熟料的混合,制成混合物；砖压机上压制成型并干燥。所述制备的环保型互锁块具有质量轻、不易风化、高效隔热、抗压强度大的特点。所述制备方法不消耗地球上的原始物质、能源消耗少、污染小,具有良好的经济和生态效益。(The invention discloses an environment-friendly interlocking block and a manufacturing method thereof, wherein the method comprises the following steps: removing impurities, drying and screening palm oil clinker and quarry dust; drying, grinding and screening the palm oil clinker to prepare palm oil clinker powder; mixing the palm oil clinker powder, cement, palm oil fuel ash, quarry dust and the palm oil clinker to prepare a mixture; pressing and forming on a brick press and drying. The prepared environment-friendly interlocking block has the characteristics of light weight, difficult weathering, high efficiency, heat insulation and high compressive strength. The preparation method does not consume the original substances on the earth, has low energy consumption and little pollution, and has good economic and ecological benefits.)

1. An environment-friendly interlocking block and a preparation method thereof are characterized by comprising the following steps:

s01, removing impurities, drying and screening the palm oil clinker, the quarry dust and the palm oil fuel ash;

s02, drying, grinding and screening the palm oil clinker to prepare palm oil clinker powder;

s03, mixing the palm oil clinker powder, the cement, the palm oil fuel ash, the quarry dust and the palm oil clinker to prepare a mixture;

and S04, pressing and forming on a brick press and drying.

2. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: the palm oil clinker and the quarry dust are both common industrial wastes.

3. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: and the palm oil clinker, the quarry dust and the palm oil fuel ash are all required to be subjected to high-temperature drying treatment to remove moisture in the palm oil clinker, the quarry dust and the palm oil fuel ash.

4. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: the palm oil clinker, the quarry dust and the palm oil fuel ash all need to be subjected to certain impurity removal treatment.

5. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: the palm oil clinker and the quarry dust need to be subjected to certain grinding treatment to reduce the particle size and increase the surface area, so that the mechanical property of the concrete is improved.

6. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: the grinding treatment of the palm oil clinker and the quarry dust can be carried out by a ball mill.

7. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: the palm oil fuel ash, the palm oil clinker powder and the cement are uniformly mixed in a dry state.

8. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: and after the palm oil fuel ash, the palm oil clinker powder and the cement are uniformly mixed, the quarry dust and the palm oil clinker are added.

9. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: and a proper amount of water is required to be added into the mixture of the palm oil clinker powder, the cement, the palm oil fuel ash, the quarry dust and the palm oil clinker.

10. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: the addition of the palm oil clinker powder is to fill the voids and to become an active pozzolanic material to achieve the highest compaction.

11. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: the mixture is pressed and formed on a brick press to prepare the environment-friendly interlocking block.

12. The environment-friendly interlocking block and the preparation method thereof as claimed in claim 1, characterized in that: the environmentally friendly interlocking blocks were covered with plastic sheets and cured at room temperature.

Technical Field

The invention relates to the field of building materials, in particular to an environment-friendly interlocking block and a preparation method thereof.

Background

The mortarless building system saves the traditional mortar layer by using the interlocking block, has the advantages of short construction time during installation and low labor cost, and simultaneously, compared with a kiln sintered clay brick stone or concrete building, the interlocking block can obviously reduce the resource consumption and the environmental pollution in production and has wide application prospect. The manufacture of traditional bricks is an important factor for the depletion of ecological resources. In these production methods, a large amount of cement is inevitably used. In the case of ordinary portland cement, the production of portland cement consumes a large amount of electricity and discharges pollutant gases. The production of 1kg of portland cement consumes about 1.5kW · h of energy and discharges about 1kg of carbon dioxide to the atmosphere. Portland cement production accounts for approximately 7% of all global carbon dioxide emissions.

Palm Oil Clinker (POC) and Palm Oil Fuel Ash (POFA) are by-products produced during combustion in palm oil plants and are of very low commercial value. The palm oil clinker is a light fibrous material, has porous, flaky and irregular shapes, and has rough and thorn-shaped edges; palm oil fuel ash is typically buried directly in landfills, causing ecological pollution and land scarcity.

Palm oil fuel ash (containing high concentration of silica, 44-66%. the silica content of palm oil fuel ash can react with calcium hydroxide Ca (OH) in the hydration process of cement)₂More calcium silicate hydrate is generated by reaction, which is helpful for improving the strength of the concrete. However, the palm oil fuel ash obtained from palm oil plants has coarse particles larger than 300 μm and unburned fibers and shells remain, which results in a decrease in compressive strength and workability when the raw palm oil fuel ash is directly used as a substitute for cement in concrete.

Disclosure of Invention

Technical problem to be solved

In order to improve the utilization rate of the palm oil clinker and the palm oil fuel ash, reduce the content of cement during the preparation of the interlocking block and save the cost. The invention provides an environment-friendly interlocking block and a preparation method thereof. The preparation method solves the problem of treatment of palm oil clinker and palm oil fuel ash waste, reduces the use amount of cement, and is beneficial to protecting the environment and saving resources.

(II) technical scheme

The invention prepares the environment-friendly interlocking block with light weight and high heat insulation efficiency by taking the mechanism that silicon oxide in palm oil fuel ash can react with calcium hydroxide in the hydration process of cement to generate a large amount of calcium silicate hydrate.

Preferably, the raw materials of the environment-friendly interlocking block are palm oil fuel ash, palm oil clinker, quarry dust, palm oil clinker and cement.

Preferably, the palm oil clinker and the quarry dust are both common industrial wastes.

Preferably, the palm oil clinker and the quarry dust are both common industrial wastes.

Preferably, the palm oil clinker, the quarry dust and the palm oil fuel ash are all subjected to high-temperature drying treatment to remove moisture in the palm oil clinker, the quarry dust and the palm oil fuel ash.

Preferably, the palm oil clinker, the quarry dust and the palm oil fuel ash are subjected to certain impurity removal treatment.

Preferably, the palm oil clinker and quarry dust are subjected to a certain milling treatment to reduce the particle size and increase the surface area, thereby improving the mechanical properties of the concrete.

Preferably, the grinding treatment of the palm oil clinker and the quarry dust can be carried out by a ball mill.

Preferably, the palm oil fuel ash, the palm oil clinker powder and the cement are homogeneously mixed in a dry state.

Preferably, the palm oil fuel ash, the palm oil clinker powder and the cement are uniformly mixed and then added with the quarry dust and the palm oil clinker.

Preferably, a proper amount of water is added to the mixture of the palm oil clinker powder, the cement, the palm oil fuel ash, the quarry dust and the palm oil clinker.

Preferably, the palm oil clinker powder is added for the purpose of filling the voids and becoming an active pozzolanic material for maximum compaction.

Preferably, the mixture is pressed and formed on a brick press to prepare the environment-friendly interlocking block.

Preferably, the environmentally friendly interlocking blocks are covered with plastic sheets and cured at room temperature.

(III) advantageous effects

Compared with the prior art, the invention provides an environment-friendly interlocking block and a preparation method thereof, and the environment-friendly interlocking block has the following beneficial effects:

1. the method for preparing the environment-friendly interlocking block uses waste materials (such as palm oil waste materials) instead of soil (such as clay and sandy soil) so as to greatly protect the natural resources of the earth from inevitable consumption.

2. The preparation method of the environment-friendly interlocking block can reduce the ecological pollution caused by the accumulation of palm oil wastes in the refuse landfill. The method used in the production of the environment-friendly interconnection block does not consume energy or emit greenhouse gases.

3. The preparation method of the environment-friendly interlocking block needs less cement mortar, greatly reduces the production cost, and minimizes the ecological pollution caused by the cement mortar, thereby realizing sustainability.

Drawings

Fig. 1 is a diagram of a practical sample of an environment-friendly interlocking block.

Fig. 2 is a flow chart of a process for preparing an environment-friendly interlocking block.

FIG. 3 is a table showing the ingredients of the raw materials in the examples.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Impurity removal, Palm Oil Clinker (POC) and Quarry Dust (QD) with a diameter of less than 300 μm were dried in an oven at 105 ℃ for 24 hours and then sieved on a 5mm sieve to remove coarser particles. Palm Oil Clinker Powder (POCP) was prepared and POC below 5mm was further ground in a ball mill at 150rpm for 3 hours and then sieved through a 300 μm sieve. Palm Oil Fuel Ash (POFA) was reduced in diameter and dried at 105 ℃ for 24 hours and then sieved over a 300 μm sieve. The POFA, POCP and cement were mixed in the mixer in a dry state for about 10 minutes. Then adding the palm oil clinker and quarry dust, mixing for another 10 minutes, then wetting the mixture by spraying water, the water/binder ratio being fixed at 0.45, the mass ratio of cement, POCP, POFA, QD, POC being 10: 15: 10: 64: 1. the mixture is fed to the hopper of the machine by means of a machine conveyor belt. Then pressing by using a brick press, finally covering the environment-friendly interlocking block by using a plastic sheet and curing at room temperature to prepare the environment-friendly interlocking block of 25 multiplied by 12 multiplied by 10 cm.

Practical tests show that the prepared environment-friendly interlocking block has the compression strength of 8.36MPa, the water absorption of 13.18 percent, the modulus of rupture of 3.71MPa and the thermal conductivity of 0.270W/(m.K).

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.