阅读说明：本技术 一种水泥抗折增强剂 (Anti-fracture reinforcing agent for cement ) 是由 安自永 邓彩霞 杨雨虹 于 2019-05-01 设计创作，主要内容包括：本发明公开了一种水泥抗折增强剂,属于建材领域。组成材料为：铝酸钙、凹凸棒土、超细玻璃纤维、黄糊精；其分别加量按重量份为：铝酸钙30-45份、凹凸棒土15-20份、超细玻璃纤维45-55份、黄糊精10-15份组成,并将上述材料混合均匀过筛即得。(The invention discloses a cement anti-bending reinforcing agent, and belongs to the field of building materials. The composition materials are as follows: calcium aluminate, attapulgite, superfine glass fiber and yellow dextrin; the respective addition amounts are as follows by weight: 30-45 parts of calcium aluminate, 15-20 parts of attapulgite, 45-55 parts of superfine glass fiber and 10-15 parts of yellow dextrin, and the calcium aluminate, the attapulgite and the yellow dextrin are uniformly mixed and sieved to obtain the calcium aluminate superfine glass fiber.)

1. A cement bending resistance reinforcing agent is characterized in that: calcium aluminate, attapulgite, superfine glass fiber and yellow dextrin. The respective addition amounts are as follows by weight: 30-45 parts of calcium aluminate, 15-20 parts of attapulgite, 45-55 parts of superfine glass fiber and 10-15 parts of yellow dextrin, and the calcium aluminate, the attapulgite and the yellow dextrin are uniformly mixed and sieved to obtain the calcium aluminate superfine glass fiber.

(1) the off-white powder of calcium aluminate according to claim 1, which is mainly composed of a mixture of calcium dialuminate and calcium monoaluminate, is sparingly soluble in water, and is alkaline in aqueous solution.

(2) The attapulgite clay according to claim 1, which is also called palygorskite, is an aqueous fulvesite clay mineral having a chain-layered structure, and the structure thereof belongs to a 2: 1 type clay mineral, wherein the tetrahedral wafer vertices are reversed at a certain distance in each 2: 1 structure layer to form a chain-like structure. Channels are formed between the tetrahedral strips in parallel with the chains, and the channels are filled with zeolite water and crystal water.

(3) The microglass fiber of claim 1, which is a glass fiber having a diameter of 5 μm or less;

(4) the yellow dextrin of claim 1, which is a yellowish white powder, is easily soluble in water, insoluble in alcohol, strongly viscous in water, and widely used in the die abrasives industry.

3. The cement antiflex cracking reinforcing agent as set forth in claim 1, added to the cement product in an amount of 0.8-1.2%.

Background art: the existing cement reinforcing agent has the obvious effect of improving the compressive strength of cement, but the requirement on the anti-folding performance of cement prefabricated products such as cement plates, cement tiles and the like is more important, and no product of the type is provided for the market at present.

The purpose of the invention is as follows: the invention aims to provide a reinforcing agent with high fracture resistance, which meets the requirements of various cement prefabricated products.

The invention content is as follows: the cement anti-bending reinforcing agent consists of calcium aluminate, attapulgite, superfine glass fiber and yellow dextrin.

The respective addition amounts are as follows by weight: 30-45 parts of calcium aluminate, 15-20 parts of attapulgite, 45-55 parts of superfine glass fiber and 10-15 parts of yellow dextrin. Mixing the above materials, and sieving;

the anti-breaking reinforcing agent is added into the cement according to the proportion of 0.8 to 1.5 percent of the cement, so that the anti-breaking strength can be improved by 65 to 80 percent

The main component of the grey white calcium aluminate powder is a mixture of calcium dialuminate and calcium monoaluminate, the grey white calcium aluminate powder is slightly soluble in water, and an aqueous solution is alkaline.

The attapulgite clay is a water-containing rich-aluminum-magnesium silicate clay mineral with a chain layer structure, the structure belongs to 2: 1 type clay minerals, and in each 2: 1 structure layer, the angle tops of tetrahedral wafers are reversed at a certain distance to form a layer chain. Channels are formed between the tetrahedral strips in parallel with the chains, and the channels are filled with zeolite water and crystal water.

The superfine glass fiber of the invention is glass fiber with the diameter of less than 5 microns;

the yellow dextrin is yellow white powder, is easy to dissolve in water, is insoluble in alcohol, has strong viscosity in water, and is widely applied to the industry of die abrasives;

the invention principle expresses that: the addition of the calcium aluminate can improve the formation speed of calcium silicate gel in the cement, and stimulate the activity of various components in the cement in the hydration process, so that the formed calcium silicate gel is increased; the attapulgite has two functions, namely, part of water is absorbed in the cement hydration process and is slowly released along with the generation of hydration heat, and enough water is provided in the calcium silicate gel formation process; the attapulgite has a coupling effect, so that the holding force of calcium silicate gel on aggregate such as sand and stone materials and fibers in concrete can be improved, and higher bending strength and compressive strength can be obtained; the superfine glass fiber can fill the gap and increase the local tension of the cement concrete; the yellow dextrin is used as a suspension material, so that the water segregation in the hydration process of cement concrete can be reduced, the consistency of calcium silicate gel formed by the hydration of the cement concrete is ensured, and higher flexural strength is obtained.

Has the advantages that: the flexural strength is of great significance to cement products, and the invention can improve the flexural strength by 65-80% and improve the compressive strength by 10-15%.

The specific implementation mode is as follows: