Load-bearing thermal-insulating and anti-crack type cotton straw cement-based building block and preparation method thereof
A cotton straw, cement-based technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of poor crack resistance of thermal insulation blocks, easy corrosion of steel fiber cement-based blocks, load-bearing Problems such as poor thermal performance of wall materials, to achieve the effects of light weight, good sound insulation and good durability
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Embodiment 1
[0017] Example 1, the preparation of the load-bearing thermal insulation and anti-cracking cotton straw cement-based block: the first step: firstly, the cotton straw is crushed into cotton straw scraps with a length of 10 mm to 50 mm, and the cotton straw scraps are crushed with a mass concentration of 1 % to 2% NaOH solution for 24 hours to 36 hours, then rinse the soaked cotton stalk scraps with clear water to remove the lye, drain and dry the cotton straw scraps as dry cotton stalks for later use; Step 2: In parts by weight, weigh 80 to 120 parts of cotton straw dry material, 400 to 500 parts of cement, 1000 to 1500 parts of sand, 2 to 3.5 parts of aluminum powder, and 4 parts of water reducing agent to 6 parts and 240 to 320 parts of water; the third step: mix the weighed aluminum powder, cement and sand, dry mix evenly to form a cement-sand mixture, and then pour the weighed dry cotton straw into the cement sand Stir the mixture evenly, and get the primary product mixture...
Embodiment 2
[0018] Example 2, the preparation of the load-bearing thermal insulation and anti-cracking cotton straw cement-based block: Step 1: Firstly, the cotton straw is crushed into cotton straw scraps with a length of 10mm or 50mm, and the cotton straw scraps are crushed with a mass concentration of 1 % or 2% NaOH solution for 24 hours or 36 hours, then rinse the soaked cotton stalk scraps with clear water to remove the lye, and after washing, drain the cotton straw scraps and dry them as dry cotton stalks for later use; Step 2: In parts by weight, weigh 80 or 120 parts of cotton straw dry material, 400 or 500 parts of cement, 1000 or 1500 parts of sand, 2 or 3.5 parts of aluminum powder, and 4 parts of water reducing agent Or 6 parts and 240 parts or 320 parts of water; the third step: mix the weighed aluminum powder, cement and sand, dry mix evenly to form a cement-sand mixture, and then pour the weighed cotton straw dry material into the cement sand Stir the mixture evenly, and ge...
Embodiment 3
[0020] Embodiment 3, as a preference of the above embodiment, the moisture content of the dry cotton stalks is less than 0.3%, the moisture content of the sand is less than 0.5%, and the mud content of the sand is less than 1.0%.
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Abstract
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