阅读说明：本技术 一种抗压防水混凝土 (Compression-resistant waterproof concrete ) 是由 薛海迪 于 2019-09-06 设计创作，主要内容包括：一种抗压防水混凝土,其特征在于：由以下组分构成：水性聚氨酯80～100重量份、水泥150～200重量份、骨料150～230重量份、改性橡胶颗粒80～120重量份、水玻璃80～100重量份、固化剂2～5重量份、减水剂5～15重量份。有益效果是解决目前混凝土地面长期动载不匀产生裂痕,加重维护成本,造成无尘车间环境不达标问题。(The utility model provides a resistance to compression waterproof concrete which characterized in that: the paint consists of the following components: 80-100 parts of waterborne polyurethane, 150-200 parts of cement, 150-230 parts of aggregate, 80-120 parts of modified rubber particles, 80-100 parts of water glass, 2-5 parts of curing agent and 5-15 parts of water reducing agent. The concrete floor has the beneficial effects that the problems that the dust-free workshop environment does not reach the standard due to cracks generated by long-term uneven dynamic load of the existing concrete floor, and the maintenance cost is increased are solved.)

1. The utility model provides a resistance to compression waterproof concrete which characterized in that: the paint consists of the following components: 80-100 parts of waterborne polyurethane, 150-200 parts of cement, 150-230 parts of aggregate, 80-120 parts of modified rubber particles, 80-100 parts of water glass, 2-5 parts of curing agent and 5-15 parts of water reducing agent.

2. The compression-resistant waterproof concrete according to claim 1, wherein: the waterborne polyurethane is prepared by the following method: (1) dicyclohexylmethane diisocyanate, isophorone diisocyanate and poly neopentyl glycol adipate are mixed according to the mass ratio of 1: 0.5: 1.6, heating to 70 ℃ in a nitrogen environment, and carrying out stannous octoate catalysis and dimethylolpropionic acid chain extension to obtain a polyurethane prepolymer; adding water and an emulsifier into the polyurethane prepolymer, and emulsifying to obtain waterborne polyurethane with the solid content of 35%; wherein the molecular weight of the poly neopentyl glycol adipate is 2000, and the average molecular weight of the polyurethane prepolymer is 2000.

3. The compression-resistant waterproof concrete according to claim 1, wherein: the particle size of the modified rubber particles is 0.5-1.5 mm, and KH550 is adopted for treatment.

4. The compression-resistant waterproof concrete according to claim 1, wherein: the modulus of the water glass is 3-3.5, the curing agent is octafluoropentanol, and the water reducing agent is sodium methylene dimethyl dinaphthalene sulfonate.

5. The preparation method of the compression-resistant waterproof concrete according to claim 1, characterized in that: is prepared by the following steps: (1) accurately metering each component, uniformly mixing the waterborne polyurethane, the cement and the modified rubber particles, adding a curing agent, and further mixing to obtain a mixture; (2) and (3) fully mixing the mixture obtained in the step (1) with aggregate, water glass and a water reducing agent, and further pouring and curing to obtain the compression-resistant waterproof concrete.

Technical Field

The invention belongs to the field of building materials, and particularly relates to concrete, in particular to compression-resistant waterproof concrete.

Background

Because the increase of environmental protection pressure, more and more enterprises need carry out equipment transformation, install VOC treatment facility additional, because do not leave sufficient space in advance, many enterprises can only speak the equipment and install on the roof. However, the waterproof layer of the floor is fragile and difficult to bear heavy equipment, so that the floor needs to be modified, and a novel concrete with compression resistance and water resistance is needed.

The invention patent of application No. 201710396103.8 discloses a self-waterproof concrete, which is obtained by adding a waterproof agent consisting of illite powder, fly ash, alum, hydrated lime and calcium superphosphate into the concrete to block the gaps in the concrete, but the improvement still has gaps, and the self-waterproof concrete has poor binding property with the original floor when used for floor modification and is easy to delaminate and break.

Disclosure of Invention

The invention mainly aims to provide compression-resistant waterproof concrete, which solves the problem that the dust-free workshop environment does not reach the standard due to the fact that cracks are generated due to the fact that the existing concrete ground is unevenly loaded for a long time, maintenance cost is increased, and the like.

In order to achieve the technical effects, the invention adopts the following technical scheme:

the compression-resistant waterproof concrete comprises the following components: 80-100 parts of waterborne polyurethane, 150-200 parts of cement, 150-230 parts of aggregate, 80-120 parts of modified rubber particles, 80-100 parts of water glass, 2-5 parts of curing agent and 5-15 parts of water reducing agent.

The preparation method of the waterborne polyurethane comprises the following steps: (1) dicyclohexylmethane diisocyanate, isophorone diisocyanate and poly neopentyl glycol adipate are mixed according to the mass ratio of 1: 0.5: 1.6, heating to 70 ℃ in a nitrogen environment, and carrying out stannous octoate catalysis and dimethylolpropionic acid chain extension to obtain a polyurethane prepolymer; adding water and an emulsifier into the polyurethane prepolymer, and emulsifying to obtain waterborne polyurethane with the solid content of 35%; wherein the molecular weight of the poly neopentyl glycol adipate is 2000, and the average molecular weight of the polyurethane prepolymer is 2000.

Wherein the particle size of the modified rubber particles is 0.5-1.5 mm, and the modified rubber particles are treated by KH550 and have good bonding property with inorganic substances;

the modulus of the water glass is 3-3.5, the curing agent is octafluoropentanol, and the water reducing agent is sodium methylene dimethyl dinaphthalene sulfonate.

The invention also provides a corresponding preparation method:

(1) accurately metering each component, uniformly mixing the waterborne polyurethane, the cement and the modified rubber particles, adding the curing agent, and further mixing to obtain a mixture.

(2) And (3) fully mixing the mixture obtained in the step (1) with aggregate, water glass and a water reducing agent, and further pouring and curing to obtain the compression-resistant waterproof concrete.

The invention has the beneficial effects that:

(1) according to the invention, the water-based polyurethane is adopted for crosslinking, a through network is formed in the concrete, and the strength of the concrete is integrally improved; because the polyurethane has certain toughness, the vibration can be slowed down; the fluorine-containing curing agent can improve the hydrophobicity of concrete.

(2) The compressive strength of the concrete can be enhanced by adding the modified rubber particles.

(3) The water glass is added, so that the concrete is more compact, and the waterproof performance is enhanced.

Detailed Description

For further understanding of the present invention, the following embodiments are provided to illustrate the technical solutions of the present invention in detail, and the scope of the present invention is not limited by the following embodiments.