Cement-based self-humidity-adjusting building material and preparation method thereof

Abstract

The invention relates to a building material and a preparation method for self-regulating indoor humidity through water vapor adsorption and release. This cement-based building material with automatic humidity control function has the following components by weight percentage: 10-50% of diatomite, 0-30% of sepiolite, 0.01-0.2% of alkyl surfactant, and 15-40% of cement. %, quartz sand 0-20%, water reducing agent 0-2%, alcohol active agent 1-5%, inorganic antibacterial agent 0-1%, water 20-45%. The preparation method of the material includes: first weighing each component according to the above weight percentage, then performing surface activation treatment on the pretreated diatomite and sepiolite minerals, and then adding the weighed components and stirring together, Prepare a flowable plastic slurry, and finally pour the slurry into a test mold of a certain shape, vibrate, compact, and plaster the surface for maintenance, and remove the mold to prepare the required cement-based self-humidity-adjusting building material.

Description

technical field

[0001] The invention relates to the field of building materials for self-adjusting indoor humidity through water vapor adsorption and release and a preparation method thereof. Background technique

[0002] As we all know, the relative humidity of the most suitable environment for human survival is between 40% and 70%, and the indoor relative humidity is often affected by the external climate (such as rainy season and dry season). For the control of indoor relative humidity, if mechanical methods, such as air-conditioning systems, are used to control relative humidity, the requirements for the building structure of the entire system will inevitably be increased, and the equipment investment, day and night operation of machinery, and energy consumption are expensive. It is in line with the strategy of sustainable development, and it also appears powerless to control the humidity in tiny spaces. Therefore, it is very meaningful to research and develop self-humi...

Examples

Embodiment 1

[0032] The components were weighed as follows: 250g of diatomite, 0.6g of alkyl surfactant, 300g of cement, 100g of quartz sand, 15g of water reducer, 23g of alcohol active agent, 1.4g of inorganic antibacterial agent, and 310g of water. Diatomite should be dry, high-purity mineral powder that has been crushed, and the fineness should be controlled at 100-300 mesh. Dissolving the alcohol active agent in water, then pouring it into the above-mentioned diatomite mineral powder, fully stirring, storing for 5 minutes, and performing mesoporous surface activation treatment. Then, put the weighed and activated diatomite into a mixer for 3 minutes, so that multi-connected micropores are formed in the slurry, and a flowable plastic slurry is prepared. Pour the slurry into a test mold of a certain shape, vibrate, compact, and plaster the surface, then send it to an environment with a relative humidity greater than 50% and a temperature not lower than 15°C for natural curing, and remove...

Embodiment 2

[0034] Weigh each component according to the following weight: diatomite 250g, sepiolite 70g, alkyl surfactant 1g, cement 200g, quartz sand 140g, water reducer 20g, alcohol active agent 30g, inorganic antibacterial agent 1g, water 288g. The pickling activation pretreatment process is adopted, that is, the diatomite and sepiolite minerals are pickled with dilute inorganic acid aqueous solution for 20 minutes, then activated at 100°C for 10 hours, and the prepared slurry is dried and powder fineness is controlled. In 100-300 mesh. Dissolve the alcohol active agent in water, then pour it into the diatomite and sepiolite mineral powder for full stirring, store it for 8 minutes, and carry out the mesoporous surface activation treatment. Then, the weighed and activated diatomite and sepiolite were put into a mixer and stirred for 5 minutes, so that multi-connected micropores were formed in the slurry, and a flowable plastic slurry was prepared. Pour the slurry into a test mold of ...

Embodiment 3

[0036]The components were weighed as follows: 500 g of diatomite, 2 g of alkyl surfactant, 200 g of cement, 30 g of water reducing agent, 17 g of alcohol active agent, 1 g of inorganic antibacterial agent, and 250 g of water. The pickling activation pretreatment process is adopted, that is, diatomite minerals are pickled with dilute inorganic acid aqueous solution for 20 minutes and then activated at 80°C for 15 hours, and the prepared slurry is dried and the powder fineness is controlled at 100-150 head. Dissolve the alcohol active agent in water, then pour it into the diatomaceous earth mineral powder, stir well, and store it for 8 minutes. Then, put the weighed and activated diatomite in a mixer for 5 minutes, so that multi-connected micropores are formed in the slurry, and a flowable plastic slurry is prepared. Pour the slurry into a test mold of a certain shape, vibrate, compact, and plaster the surface, then use natural curing or steam curing to accelerate curing, and t...

technical field

[0001] The invention relates to the field of building materials for self-adjusting indoor humidity through water vapor adsorption and release and a preparation method thereof. Background technique

[0002] As we all know, the relative humidity of the most suitable environment for human survival is between 40% and 70%, and the indoor relative humidity is often affected by the external climate (such as rainy season and dry season). For the control of indoor relative humidity, if mechanical methods, such as air-conditioning systems, are used to control relative humidity, the requirements for the building structure of the entire system will inevitably be increased, and the equipment investment, day and night operation of machinery, and energy consumption are expensive. It is in line with the strategy of sustainable development, and it also appears powerless to control the humidity in tiny spaces. Therefore, it is very meaningful to research and develop self-humi...

Examples

Embodiment 1

[0032] The components were weighed as follows: 250g of diatomite, 0.6g of alkyl surfactant, 300g of cement, 100g of quartz sand, 15g of water reducer, 23g of alcohol active agent, 1.4g of inorganic antibacterial agent, and 310g of water. Diatomite should be dry, high-purity mineral powder that has been crushed, and the fineness should be controlled at 100-300 mesh. Dissolving the alcohol active agent in water, then pouring it into the above-mentioned diatomite mineral powder, fully stirring, storing for 5 minutes, and performing mesoporous surface activation treatment. Then, put the weighed and activated diatomite into a mixer for 3 minutes, so that multi-connected micropores are formed in the slurry, and a flowable plastic slurry is prepared. Pour the slurry into a test mold of a certain shape, vibrate, compact, and plaster the surface, then send it to an environment with a relative humidity greater than 50% and a temperature not lower than 15°C for natural curing, and remove...

Embodiment 2

[0034] Weigh each component according to the following weight: diatomite 250g, sepiolite 70g, alkyl surfactant 1g, cement 200g, quartz sand 140g, water reducer 20g, alcohol active agent 30g, inorganic antibacterial agent 1g, water 288g. The pickling activation pretreatment process is adopted, that is, the diatomite and sepiolite minerals are pickled with dilute inorganic acid aqueous solution for 20 minutes, then activated at 100°C for 10 hours, and the prepared slurry is dried and powder fineness is controlled. In 100-300 mesh. Dissolve the alcohol active agent in water, then pour it into the diatomite and sepiolite mineral powder for full stirring, store it for 8 minutes, and carry out the mesoporous surface activation treatment. Then, the weighed and activated diatomite and sepiolite were put into a mixer and stirred for 5 minutes, so that multi-connected micropores were formed in the slurry, and a flowable plastic slurry was prepared. Pour the slurry into a test mold of ...

Embodiment 3

[0036]The components were weighed as follows: 500 g of diatomite, 2 g of alkyl surfactant, 200 g of cement, 30 g of water reducing agent, 17 g of alcohol active agent, 1 g of inorganic antibacterial agent, and 250 g of water. The pickling activation pretreatment process is adopted, that is, diatomite minerals are pickled with dilute inorganic acid aqueous solution for 20 minutes and then activated at 80°C for 15 hours, and the prepared slurry is dried and the powder fineness is controlled at 100-150 head. Dissolve the alcohol active agent in water, then pour it into the diatomaceous earth mineral powder, stir well, and store it for 8 minutes. Then, put the weighed and activated diatomite in a mixer for 5 minutes, so that multi-connected micropores are formed in the slurry, and a flowable plastic slurry is prepared. Pour the slurry into a test mold of a certain shape, vibrate, compact, and plaster the surface, then use natural curing or steam curing to accelerate curing, and t...