A saline-alkali soil biomass brick and its production method and application
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A saline-alkali soil and material technology, applied in the field of green building materials, to achieve the effects of increasing added value, protecting the environment, and saving resources
Active Publication Date: 2020-07-14
SHANDONG AGRICULTURAL UNIVERSITY
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Problems solved by technology
There is no precedent for combining saline-alkali soil with biomass fibers to prepare green building materials
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preparation example Construction
[0030] Another aspect of the present invention provides a kind of preparation method of saline-alkali soil biomass brick, comprising the following steps:
[0031] (1) Making molds: determine the structural size of bricks, design and manufacture molds;
[0032] (2) adopt stirrer to stir after weighing raw material by weight;
[0033] (3) Filling the mold: filling the mold with the mixture and filling the mold;
[0034] (4) Install the machine to press the bricks. When pressing the bricks, record the maximum pressure, cold pressing temperature, and time parameters when the indenter is completely pressed into the mold. The pressure is 10MPa, the temperature is room temperature, and the time is 10min. , demolded, and the bricks were dried at 60°C for 48 hours.
Embodiment 1
[0038] Purpose: To press bricks with a three-dimensional size of 235mm×110mm×50mm and a mass of 1572g. The formula is: 384.8g of saline-alkali soil, 337g of corn straw fiber, and 1539.2g of calcium hydroxide.
[0039] 1. Raw materials:
[0040] Saline-alkali soil (moisture content 5.54-6.12%, density 1.079-1.112g / cm 3 ) corn stalk fiber (moisture content 9.82-10.12%, density 0.097-0.101g / cm 3 ) Calcium hydroxide choose calcium hydroxide slurry (moisture content is 53.69 ~ 55.78%, density is 1.237 ~ 1.300g / cm 3 ).
[0041] 2. Preparation:
[0042] (1) Making molds: Design and manufacture molds on the basis of determining that the new bricks are solid cuboids and the three-dimensional dimensions are 235mm×110mm×50mm;
[0043] (2) Weighing raw materials: on an electronic balance, weigh 384.82g of saline-alkali soil, 337.01g of corn stalk fiber, and 1539.21g of calcium hydroxide;
[0044] (3) Mix raw materials: use a mixer to evenly mix the corn stalk fiber with saline-alkali...
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Abstract
The invention relates to a saline-alkali soil biomass brick, which is prepared from the following raw materials by weight: 96-962 parts of saline-alkali soil, 337 parts of corn straw fiber and 962-1827 parts of calcium hydroxide. The saline-alkali soil has a water content of 5.54-6.12% and a density of 1.079-1.112g / cm<3>. The corn straw fiber has a moisture content of 9.82-10.12% and a density of0.097-0.101g / cm<3>. The calcium hydroxide adopts calcium hydroxide slurry, which has a water content of 53.69-55.78% and a density of 1.237-1.300g / cm<3>. The invention also discloses a preparation method of the saline-alkali soil biomass brick and application of the brick in preparation of building materials. The saline-alkali soil biomass brick provided by the invention increases the added valueof saline-alkali soil, creatively uses saline-alkali soil in the field of industrial raw materials for green building bricks, and creatively utilizes saline-alkali soil and corn straw fiber as the rawmaterials and employs calcium hydroxide as the adhesive for mould pressing into a biomass wall brick material. The novel biomass wall brick has wood-like touch, warmth feeling and decorativeness, hasmoisture absorption and desorption effects, can adjust the indoor air humidity, improve the indoor environmental quality, and increase the livability of houses.
Description
technical field [0001] The invention belongs to the technical field of green building materials, and in particular relates to a saline-alkali soil biomass brick and its production method and application. Background technique [0002] There are about 1 billion tons of corn stalks in the world, and about 250 million tons in my country. Recycling and efficient utilization of straw resources and realizing straw resource utilization and industrialization are fundamental strategies to solve straw waste and incineration. Using corn stalks as raw materials, straw-cement composite materials, grass-plastic composite materials, grass-wood composite materials and bio-based building materials can be prepared. [0003] Calcium hydroxide is the earliest inorganic gelling material used by humans, and it has flame retardant properties. Using calcium hydroxide as raw material, calcium hydroxide slurry, cement mortar, tung oil mortar, and glutinous rice mortar can be prepared, which are wide...
Claims
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