阅读说明：本技术 一种预铺防水卷材专用刚性防水型隔离砂及其制备方法 (Rigid waterproof type isolation sand special for pre-paved waterproof coiled material and preparation method thereof ) 是由 吴晓雨 沈凯 刘涛 杨建国 于 2021-09-03 设计创作，主要内容包括：本发明涉及防水卷材技术领域,尤其涉及一种预铺防水卷材专用刚性防水型隔离砂及其制备方法,包括芯材及设于芯材外部的包覆层,所述芯材包括如下重量比的成分：芯材85份,所述包覆层包括如下重量比的成分：水泥20～30份、水泥基渗透结晶母料50～60份、石英砂：20～30份,水溶性乳液10～13份、偶联剂3～5份、紫外线吸收剂：2～4份。本发明克服了传统的隔离砂自身不能防水的缺陷,与后浇混凝土剥离强度低,影响预铺防水卷材的防水效果。采用本发明提供的具有刚性防水型的隔离砂具有与后浇混凝土的剥离强度高、适应基层变形能力强、具有双道防水。同时原材料易得,所用到的原料种类少,制备工艺简便,施工方便,综合成本低廉,适用于大规模工业生产和广泛使用。(The invention relates to the technical field of waterproof coiled materials, in particular to a special rigid waterproof type isolation sand for pre-paved waterproof coiled materials and a preparation method thereof, wherein the special rigid waterproof type isolation sand comprises a core material and a coating layer arranged outside the core material, and the core material comprises the following components in parts by weight: 85 parts of a core material, wherein the coating layer comprises the following components in parts by weight: 20-30 parts of cement, 50-60 parts of cement-based permeable crystallization master batch, and quartz sand: 20-30 parts of water-soluble emulsion, 10-13 parts of coupling agent, 3-5 parts of ultraviolet absorbent: 2-4 parts. The invention overcomes the defect that the traditional isolation sand can not prevent water, has low peeling strength with post-cast concrete, and influences the waterproof effect of the pre-paved waterproof roll. The rigid waterproof type isolation sand provided by the invention has high peel strength with post-cast concrete, strong capability of adapting to deformation of a base layer and double-channel water resistance. Meanwhile, the raw materials are easy to obtain, the used raw materials are few in variety, the preparation process is simple and convenient, the construction is convenient, the comprehensive cost is low, and the method is suitable for large-scale industrial production and wide application.)

1. The special rigid waterproof type isolation sand for the pre-paved waterproof coiled material is characterized by comprising a core material and a coating layer arranged outside the core material, wherein the core material comprises the following components in percentage by weight: 85 parts of a core material, wherein the coating layer comprises the following components in parts by weight: 20-30 parts of cement, 50-60 parts of cement-based permeable crystallization master batch, and quartz sand: 20-30 parts of water-soluble emulsion, 10-13 parts of coupling agent, 3-5 parts of ultraviolet absorbent: 2-4 parts.

2. The special rigid waterproof type isolation sand for the pre-paved waterproof coiled material as claimed in claim 1, wherein the cement is portland cement.

3. The rigid waterproof type isolation sand special for the pre-paved waterproof coiled material as claimed in claim 2, wherein the cement-based infiltration crystallization master batch is a high-permeability cement-based infiltration crystallization master batch.

4. The rigid waterproof type separating sand special for the pre-paved waterproof coiled material as claimed in claim 3, wherein the water-soluble emulsion is acrylate emulsion.

5. The special rigid waterproof type isolation sand for the pre-paved waterproof coiled material as claimed in claim 4, wherein the coupling agent is a silane coupling agent.

6. The special rigid waterproof type isolation sand for the pre-paved waterproof coiled material as claimed in claim 5, wherein the ultraviolet absorbent is benzophenone ultraviolet absorbent.

7. The special rigid waterproof type isolation sand for the pre-paved waterproof coiled material as claimed in claim 6, wherein the mesh number of the quartz sand is 80-120 meshes.

8. The special rigid waterproof type isolation sand for the pre-paved waterproof coiled material according to any one of claims 1 to 7, wherein the core material is mineral particles, and the mineral particles are one or more of reaction sand, mullite sand, ceramic sand, quartz sand and corundum.

9. A preparation method of rigid waterproof type isolation sand special for pre-paved waterproof coiled materials is characterized by comprising the following steps: s1: mixing and stirring the core material, the water-soluble emulsion and the coupling agent in parts by weight for 10-30 min to obtain a wet material; s2: uniformly stirring cement, a cement-based permeable crystallization master batch, quartz sand and an ultraviolet absorbent in parts by weight for 20-30 min to obtain powder; s3: uniformly stirring the uniformly stirred wet material in the S1 and the uniformly stirred powder material in the S2 for 25-30 min; s4: replacing screens with different meshes according to requirements, and screening to obtain semi-dry particles in a certain mesh interval; s5: the semi-dried granules in S4 are subjected to a drying process.

10. The preparation method of the special rigid waterproof type isolation sand for the pre-paved waterproof coiled material according to claim 9, wherein the drying temperature in S5 is adjusted to 120-150 ℃, and the drying speed is adjusted according to specific conditions, so that the dryness of the wrapped isolation sand meets the requirement, and the special rigid waterproof type isolation sand for the pre-paved waterproof coiled material is obtained.

Technical Field

The invention relates to the technical field of waterproof coiled materials, in particular to rigid waterproof type isolation sand special for pre-paved waterproof coiled materials and a preparation method thereof.

Background

The waterproof coiled material is mainly used for building walls, roofs, tunnels, highways, refuse landfills and the like, can be curled into a roll-shaped flexible building material product for resisting external rainwater and underground water leakage, is used as a leakage-free connection between an engineering foundation and a building, is a waterproof first barrier of the whole engineering, and plays a vital role in the whole engineering.

Among the prior art, the pre-paved waterproofing membrane on the market at present keeps apart sand and does not all possess waterproof function, and waterproof can only lean on one deck pitch base or non-pitch base waterproof layer to prevent water, because this pre-paved waterproofing membrane need not beat the protective layer again, the direct muscle binding operation of carrying out on pre-paved waterproofing membrane of sequent workman, punctures the waterproof layer very easily or the welding slag of electric welding burns out, causes pre-paved waterproofing membrane to take place the seepage, and leads to whole waterproofing engineering's failure.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provides the rigid waterproof type isolation sand special for the pre-paved waterproof coiled material and the preparation method thereof.

The invention is realized by the following technical scheme:

the special rigid waterproof type isolation sand for the pre-paved waterproof coiled material comprises a core material and a coating layer arranged outside the core material, wherein the core material comprises the following components in percentage by weight: 85 parts of a core material, wherein the coating layer comprises the following components in parts by weight: 20-30 parts of cement, 50-60 parts of cement-based permeable crystallization master batch, and quartz sand: 20-30 parts of water-soluble emulsion, 10-13 parts of coupling agent, 3-5 parts of ultraviolet absorbent: 2-4 parts.

According to the above technical solution, preferably, the cement is portland cement.

According to the technical scheme, preferably, the cement-based infiltration crystallization master batch is a high-permeability cement-based infiltration crystallization master batch.

According to the technical scheme, preferably, the water-soluble emulsion is acrylate emulsion.

According to the above technical solution, preferably, the coupling agent is a silane coupling agent.

According to the above technical solution, preferably, the ultraviolet absorber is a benzophenone ultraviolet absorber.

According to the technical scheme, the mesh number of the quartz sand is preferably 80-120 meshes.

According to the technical scheme, preferably, the core material is a mineral particle, and the mineral particle is one or more of reaction sand, mullite sand, ceramic sand, quartz sand and corundum.

The patent also discloses a preparation method of the special rigid waterproof type isolation sand for the pre-paved waterproof coiled material, which is characterized by comprising the following steps: s1: mixing and stirring the core material, the water-soluble emulsion and the coupling agent in parts by weight for 10-30 min to obtain a wet material; s2: uniformly stirring cement, a cement-based permeable crystallization master batch, quartz sand and an ultraviolet absorbent in parts by weight for 20-30 min to obtain powder; s3: uniformly stirring the uniformly stirred wet material in the S1 and the uniformly stirred powder material in the S2 for 25-30 min; s4: replacing screens with different meshes according to requirements, and screening to obtain semi-dry particles in a certain mesh interval; s5: and adjusting the temperature to 120-150 ℃, drying the semi-dry particles in the S4, and obtaining the rigid waterproof type isolation sand special for the pre-laid waterproof coiled material after drying.

The rigid waterproof type isolation sand special for the pre-paved waterproof coiled material prepared by the method is applied to building waterproof engineering, and can obtain good bonding performance and waterproof performance with post-poured concrete.

The invention has the beneficial effects that:

the pre-paved waterproof roll material manufactured by the isolation sand with the rigid waterproof type has good waterproof performance and bonding performance with post-poured concrete, has better peeling strength with the post-poured concrete, better adaptability to base deformation capacity and double-channel waterproof function compared with the existing pre-paved waterproof roll material, and is particularly suitable for underground waterproof engineering with larger base change; meanwhile, the raw materials are easy to obtain, the used raw materials are few in variety, the preparation process is simple and convenient, good peeling strength with post-cast concrete can be achieved, and the construction is convenient, safe and reliable, so that the product provided by the invention is low in comprehensive cost, and is suitable for large-scale industrial production and wide application.

Drawings

FIG. 1 shows the specification parameters of Portland cement type PII.

FIG. 2 is a specification parameter of a water-soluble emulsion.

FIG. 3 is a specification parameter of the silane coupling agent.

FIG. 4 shows specification parameters of the ultraviolet absorber.

FIG. 5 shows the specification parameters of the silica sand.

Fig. 6 is a comparison graph of performance parameters of the rigid waterproof type isolation sand for the pre-paved waterproof roll and the common isolation sand.

Fig. 7 is a result of a performance test of products obtained in each example and comparative example.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the following preferred embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention relates to a special rigid waterproof type isolation sand for pre-paved waterproof coiled materials, which comprises a core material and a coating layer arranged outside the core material, wherein the core material comprises the following components in percentage by weight: 85 parts of a core material, wherein the coating layer comprises the following components in parts by weight: 20-30 parts of cement, 50-60 parts of cement-based permeable crystallization master batch, and quartz sand: 20-30 parts of water-soluble emulsion, 10-13 parts of coupling agent, 3-5 parts of ultraviolet absorbent: 2-4 parts. The pre-paved waterproof roll manufactured by the isolation sand with the rigid waterproof type has good waterproof performance and bonding performance with post-poured concrete, has better peeling strength with the post-poured concrete, better adaptability to base deformation capacity and double-channel waterproof function compared with the existing pre-paved waterproof roll, and is particularly suitable for underground waterproof engineering with larger base change; meanwhile, the raw materials are easy to obtain, the variety of the raw materials is few, the preparation process is simple and convenient, the construction is convenient, and the method is safe and reliable, so that the product has low comprehensive cost and is suitable for large-scale industrial production and wide application.

According to the technical scheme, preferably, the cement is Portland cement, and the P II 42.5# common Portland cement is selected in the embodiment, so that the bonding strength of the high-molecular self-adhesive film waterproof coiled material is improved.

According to the technical scheme, preferably, the cement-based permeable crystallization master batch is a high-permeability cement-based permeable crystallization master batch, the cement-based permeable crystallization active master batch is composed of active silica and silicone ions, and mainly, an active compound in the cement-based permeable crystallization active master batch takes water as a carrier and permeates into gaps of an internal structure of concrete, so that the compactness of the structural layer concrete is improved.

According to the technical scheme, the water-soluble emulsion is preferably acrylate emulsion, is processed by acrylate and an emulsifier, and has the main functions of facilitating the bonding of the core material and the cement-based permeable crystalline coating, improving the waterproofness of the rigid waterproof isolation sand and further realizing the double-channel waterproof function of the pre-paved waterproof coiled material made of the rigid waterproof isolation sand and the post-poured concrete.

According to the technical scheme, the coupling agent is preferably a silane coupling agent, and the main functions of the coupling agent are to facilitate the adhesion of water-soluble emulsion and cement-based permeable crystallization and isolation sand and improve the peel strength between a pre-paved waterproof coiled material made of rigid waterproof isolation sand and post-poured concrete.

According to the technical scheme, the ultraviolet absorbent is preferably a benzophenone ultraviolet absorbent, and the ultraviolet absorbent with the model of UV531 is selected in the embodiment, so that the performance change of the rigid waterproof isolation sand caused by ultraviolet radiation can be prevented, and the pre-paved waterproof coiled material is prevented from being aged due to the ultraviolet radiation.

According to the technical scheme, the mesh number of the quartz sand is preferably 80-120 meshes, and the quartz sand mainly has the effect of increasing the strength of the permeable crystallization waterproof coating, so that the strength of the rigid waterproof type isolation sand is improved, and the durability of the pre-paved waterproof coiled material made of the rigid waterproof type isolation sand is improved.

According to the technical scheme, preferably, the core material is a mineral particle, the mineral particle is one or more of reaction sand, mullite sand, ceramic sand, quartz sand and corundum, and different types of mineral particles can be selected as the core material according to specific applications, so that different types of rigid waterproof type isolation sand can be obtained.

The patent also discloses a preparation method of the special rigid waterproof type isolation sand for the pre-paved waterproof coiled material, which is characterized by comprising the following steps:

s1: mixing and stirring the core material, the water-soluble emulsion and the coupling agent in a stirring tank according to parts by weight, wherein the stirring time is 10-30 min, so as to obtain a wet material;

s2: uniformly stirring cement, a cement-based permeable crystallization master batch, quartz sand and an ultraviolet absorbent by a drum mixer according to parts by weight, wherein the stirring time is 20-30 min, so as to obtain powder;

s3: uniformly stirring the uniformly stirred wet material in the step S1 and the uniformly stirred powder material in the step S2 in a drum mixer for 25-30 min;

s4: replacing screens with different meshes according to requirements, and screening to obtain semi-dry particles in a certain mesh interval;

s5: and (3) adjusting the temperature to 120-150 ℃, drying the semi-dry particles in the S4, and adjusting the drying speed according to specific conditions to ensure that the dryness of the wrapped isolation sand meets the requirement, thereby obtaining the rigid waterproof type isolation sand special for the pre-paved waterproof coiled material.

Specifically, products were prepared and tested by the following examples, and the results of performance tests of the products obtained in each example and comparative example are shown in fig. 7.

Example 1:

s1: respectively weighing 85 parts of core material, 10 parts of water-soluble emulsion and 3 parts of coupling agent by weight, and then adding the core material, the water-soluble emulsion and the coupling agent into a stirring tank, wherein the stirring time is 10min, so as to obtain a wet material;

s2: weighing 20 parts of cement, 50 parts of cement-based permeable crystallization master batch, 20 parts of quartz sand and 2 parts of ultraviolet absorbent in proportion, and uniformly stirring by using a drum mixer for 20min to obtain powder;

s3: and (3) uniformly stirring the wet material uniformly stirred by the S1 and the powder prepared by the S2 in a drum mixer for 25 min.

S4: replacing screens with different meshes according to requirements, and screening to obtain semi-dry particles in a certain mesh interval;

s5: and (4) adjusting the temperature to 120 ℃ to dry the semi-dry particles obtained in the step (4), wherein the drying speed is adjusted according to specific conditions, so that the dryness of the wrapped isolation sand meets the requirement, and the rigid waterproof type isolation sand special for the pre-paved waterproof coiled material is obtained.

Example 2:

s1: respectively weighing 85 parts of core material, 12 parts of water-soluble emulsion and 4 parts of coupling agent by weight, and then adding the core material, the water-soluble emulsion and the coupling agent into a stirring tank, wherein the stirring time is 20min, so as to obtain a wet material;

s2: weighing 25 parts of cement, 55 parts of cement-based permeable crystallization master batch, 25 parts of quartz sand and 3 parts of ultraviolet absorbent in proportion, and uniformly stirring by using a drum mixer for 25min to obtain powder;

s3: and (3) uniformly stirring the wet material uniformly stirred by the S1 and the powder prepared by the S2 in a drum mixer for 27 min.

S4: replacing screens with different meshes according to requirements, and screening to obtain semi-dry particles in a certain mesh interval;

s5: and (4) adjusting the temperature to 130 ℃ to dry the semi-dry particles obtained in the step (4), wherein the drying speed is adjusted according to specific conditions, so that the dryness of the wrapped isolation sand meets the requirement, and the rigid waterproof type isolation sand special for the pre-paved waterproof coiled material is obtained.

Example 3:

s1: respectively weighing 85 parts of core material, 13 parts of water-soluble emulsion and 5 parts of coupling agent by weight, and then adding the core material, the water-soluble emulsion and the coupling agent into a stirring tank, wherein the stirring time is 30min, so as to obtain a wet material;

s2: 30 parts of cement, 60 parts of cement-based permeable crystallization master batch, 30 parts of quartz sand and 4 parts of ultraviolet absorbent are weighed according to a proportion and then are uniformly stirred by a drum mixer for 30min to obtain powder;

s3: and (3) uniformly stirring the wet material uniformly stirred by the S1 and the powder prepared by the S2 in a drum mixer for 30 min.

S4: replacing screens with different meshes according to requirements, and screening to obtain semi-dry particles in a certain mesh interval;

s5: and (4) adjusting the temperature to 150 ℃ to dry the semi-dry particles obtained in the step (4), wherein the drying speed is adjusted according to specific conditions, so that the dryness of the wrapped isolation sand meets the requirement, and the rigid waterproof type isolation sand special for the pre-paved waterproof coiled material is obtained.

Comparative example

The preparation method of the rigid waterproof type isolation sand special for the pre-paved waterproof roll is the same as that of the embodiment 1, other components are not changed, and the rigid waterproof type isolation sand special for the pre-paved waterproof roll is obtained without infiltration of a crystallization master batch in a formula.

The performances of the rigid waterproof type insulating sand and the pre-paved waterproof roll made of the rigid waterproof type insulating sand in examples 1 to 3 and comparative example were tested by the GB/T23457-2017 and GB18445-2012 test methods, wherein other components of the comparative example were not changed, and only the rigid waterproof type insulating sand specially used for the pre-paved waterproof roll obtained without penetrating the crystalline master batch was used, and the test results are shown in FIG. 7.

The pre-paved waterproof roll material manufactured by the isolation sand with the rigid waterproof type has good waterproof performance and bonding performance with post-poured concrete, has better peeling strength with the post-poured concrete, better adaptability to base deformation capacity and double-channel waterproof function compared with the existing pre-paved waterproof roll material, and is particularly suitable for underground waterproof engineering with larger base change; meanwhile, the raw materials are easy to obtain, the used raw materials are few in variety, the preparation process is simple and convenient, good peeling strength with post-cast concrete can be achieved, and the construction is convenient, safe and reliable, so that the product provided by the invention is low in comprehensive cost, and is suitable for large-scale industrial production and wide application.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.