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Baking-free brick with fissure clay as main raw material and preparation method of baking-free brick
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A technology of non-burning bricks and clay, applied in the field of building materials, to achieve the effect of high density, low shrinkage, and avoiding cracks or faults
Active Publication Date: 2021-06-25
HENAN POLYTECHNIC UNIV
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[0004] At present, there is no relevant report on the production of unburned bricks with cracked clay as the main raw material. Therefore, preparing unburned bricks with cracked clay as the main raw material is a new way to improve the utilization rate of cracked clay and reduce the production cost of unburned bricks.
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Embodiment 1
[0030] An unfired brick with cracked clay as the main raw material, comprising the following raw materials in parts by weight: 60 parts of cracked clay, 35 parts of diorite, 15 parts of Portland cement, 1 part of isopropanolamine, and 1 part of lithiumhydroxide , 8 parts of quicklime, 4 parts of p-toluenesulfonamide.
[0031] The preparation method of this burn-free brick comprises the following steps:
[0032] (1) take each raw material by weight;
[0033] (2) Crack clay and diorite are pulverized to make the particle size<8mm;
[0034] (3) mix the pulverized crack clay and diorite with the rest of the raw materials;
[0035] (4) ball milling the mixed raw materials;
[0036] (5) add water, the amount of water added is 8% of the mixed raw material weight, stir evenly;
[0037] (6) Compression forming, aging at room temperature for more than 12 hours to obtain a blank; the pressing pressure is 10MPa, and the holding time is ≥10s;
[0038] (7) The first billet is naturall...
Embodiment 2
[0040] An unfired brick with cracked clay as the main raw material, comprising the following raw materials in parts by weight: 50 parts of cracked clay, 30 parts of diorite, 10 parts of Portland cement, 0.5 part of isopropanolamine, and 1 part of lithium hydroxide , 5 parts of quicklime, 3 parts of p-toluenesulfonamide.
[0041] The preparation method of this burn-free brick comprises the following steps:
[0042] (1) take each raw material by weight;
[0043] (2) Crack clay and diorite are pulverized to make the particle size<8mm;
[0044] (3) mix the pulverized crack clay and diorite with the rest of the raw materials;
[0045] (4) ball milling the mixed raw materials;
[0046] (5) add water, the amount of water added is 10% of the weight of the mixed raw materials, and stir evenly;
[0050] An unfired brick with cracked clay as the main raw material, comprising the following raw materials in parts by weight: 70 parts of cracked clay, 40 parts of diorite, 20 parts of Portland cement, 1 part of isopropanolamine, and 2 parts of lithium hydroxide , 10 parts of quicklime, 5 parts of p-toluenesulfonamide.
[0051] The preparation method of this burn-free brick comprises the following steps:
[0052] (1) take each raw material by weight;
[0053] (2) Crack clay and diorite are pulverized to make the particle size<8mm;
[0054] (3) mix the pulverized crack clay and diorite with the rest of the raw materials;
[0055] (4) ball milling the mixed raw materials;
[0056] (5) add water, the amount of water added is 5% of the mixed raw material weight, stir evenly;
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Abstract
The invention discloses a baking-free brick taking fractured clay as a main raw material and a preparation method of the baking-free brick. The baking-free brick comprises the following raw materials in parts by weight: 50 to 70 parts of fractured clay, 30 to 40 parts of diorite, 10 to 20 parts of Portland cement, 0.5 to 1 part of isopropanolamine, 1 to 2 parts of lithiumhydroxide, 5 to 10 parts of quick lime and 3 to 5 parts of p-toluenesulfonamide. The fissured clay is used as a main raw material, and the twinkling, the Portland cement, the isopropanolamine, the lithiumhydroxide, the quick lime and the p-toluene sulfonamide are used as auxiliary materials, so that the prepared baking-free brick has the advantages of high compactness, high compressive strength and breaking strength, good water resistance, low shrinkage rate and the like. The production process is simple, low in cost and beneficial to industrial popularization. Detection results show that the compressive strength of the baking-free brick can reach 25 MPa or above, the breaking strength can reach 4 MPa or above, the softening coefficient is larger than or equal to 0.95, the dryingshrinkage rate is smaller than or equal to 0.045%, the performance is good, and the baking-free brick can be used as a novel baking-free brick to be applied to constructional engineering.
Description
technical field [0001] The invention relates to an unfired brick with cracked clay as the main raw material and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Fissure clay is a special kind of clay with well-developed fissures. It is widely distributed in the south and west of Henan, especially in mountainous and hilly areas. The cracked clay contains more clay particles, the mineral components are mainly illite and quartz, and it also contains montmorillonite, and the chemical components are mainly silicon, aluminum and iron. Fissure clay is generally in a hard or hard plastic state under natural conditions. It has high density, low water content, high clay content and good cementation, so it has high strength and low compressibility. Fissure clay has a special structure that ordinary clay does not have—crack structure, and its geological characteristics are also different from ordinary clay. For example,...
Claims
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Application Information
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