阅读说明：本技术 一种uhpc水管结构及其制作工艺 (UHPC water pipe structure and manufacturing process thereof ) 是由 赵志刚 任成传 杨思忠 刘洋 马海春 王作强 常世涛 邢丽君 宋景睿 王志礼 于 2019-09-24 设计创作，主要内容包括：本发明公开一种UHPC水管结构及其制作工艺,UHPC水管结构包括UHPC混凝土管芯,UHPC混凝土管芯的一端外壁面设置有水管插口,UHPC混凝土管芯的另一端内壁面设置有水管承口,水管插口用于与另一段UHPC水管结构的水管承口插接。UHPC水管结构相比普通混凝土水管,水管壁厚降低50％以上,重量降低50％以上,钢筋消耗量降低50％以上,采用UHPC浇筑,有效解决了管道腐蚀和渗漏问题,增强了水管的耐久性,实用性强。UHPC水管结构的制作工艺取消了钢制承插口,没有配筋,采用一次免振成型方法,制作工艺简化,制作成本大大降低,生产效率提高。(The invention discloses a UHPC water pipe structure and a manufacturing process thereof, wherein the UHPC water pipe structure comprises a UHPC concrete pipe core, the outer wall surface of one end of the UHPC concrete pipe core is provided with a water pipe socket, the inner wall surface of the other end of the UHPC concrete pipe core is provided with a water pipe socket, and the water pipe socket is used for being spliced with the water pipe socket of the other section of the UHPC water pipe structure. Compared with a common concrete water pipe, the wall thickness of the UHPC water pipe is reduced by more than 50%, the weight of the UHPC water pipe is reduced by more than 50%, the consumption of reinforcing steel bars is reduced by more than 50%, the UHPC water pipe is poured, the problems of corrosion and leakage of pipelines are effectively solved, the durability of the water pipe is enhanced, and the UHPC water pipe is high in practicability. The manufacturing process of the UHPC water pipe structure cancels a steel bell and spigot without reinforcing bars, adopts a one-step vibration-free forming method, simplifies the manufacturing process, greatly reduces the manufacturing cost and improves the production efficiency.)

1. A UHPC water pipe structure which characterized in that: the pipe joint comprises a UHPC concrete pipe core, wherein a water pipe socket is arranged on the outer wall surface of one end of the UHPC concrete pipe core, a water pipe socket is arranged on the inner wall surface of the other end of the UHPC concrete pipe core, and the water pipe socket is used for being spliced with the water pipe socket of another section of UHPC water pipe structure.

2. A UHPC water tube structure according to claim 1 wherein: the water pipe socket is sleeved with a socket rubber gasket, and the socket rubber gasket is bonded with the outer wall surface of the water pipe socket through rubber glue.

3. A UHPC water tube structure according to claim 1 wherein: and a bellmouth rubber gasket is arranged on the water pipe bellmouth and is bonded with the inner wall surface of the water pipe bellmouth through rubber glue.

4. The UHPC water pipe structure of claim 2, wherein: the cross section of the socket rubber gasket is trapezoidal.

5. A manufacturing process of the UHPC water pipe structure based on any one of claims 1-4 is characterized in that: the method comprises the following steps:

step 1: cleaning the formed template, and assembling according to the template assembly requirement;

step 2: the preparation of UHPC concrete is carried out, which comprises the following steps:

step 2.1: preparing raw materials meeting the quality requirement, wherein the raw materials comprise cement, mineral admixture, water reducing agent, fine aggregate, drinking water and steel fiber;

step 2.2: calculating the mixing ratio according to a volume method, wherein the water-gel ratio is less than 0.20;

step 2.3: respectively metering various materials according to the calculated matching ratio, and ensuring that the weight error of each material meets the corresponding requirement;

and step 3: putting the raw materials into stirring equipment for stirring;

and 4, step 4: vertically, continuously and uniformly distributing materials in layers in a forming template, and carrying out vibration-free forming on the UHPC water pipe structure;

and 5: and (6) removing the mold.

6. The process of claim 5 for making a UHPC water pipe structure, wherein: and (2) after assembling the forming template in the step 1, coating a release agent on the inner surface of the forming template.

7. The process of claim 5 for making a UHPC water pipe structure, wherein: a maintenance step is also included between the step 4 and the step 5, steam curing or dry heat curing is adopted for maintenance, the belt mold is statically stopped for more than 12 hours before maintenance, the temperature of the static stop environment is not lower than 10 ℃, a plastic film is covered on the exposed surface of the UHPC water pipe structure, the temperature rise and fall rate of maintenance is not more than 20 ℃/h, the constant temperature time is more than 48 hours, and the constant temperature is not more than 90 ℃; and the temperature difference between the surface of the UHPC water pipe structure and the environment is not more than 25 ℃ when the mold is removed.

8. The process of claim 5 for making a UHPC water pipe structure, wherein: the stirring equipment in the step 3 is a forced stirrer, a blanking device for preventing the fiber from agglomerating is arranged in the forced stirrer, and the primary stirring amount of the forced stirrer is not more than 60% of the rated stirring amount.

9. The process of claim 5 for making a UHPC water pipe structure, wherein: in the step 5, the structure of the UHPC water pipe cannot be damaged during mold removal, and a vibration mode cannot be used for mold removal.

10. The process of claim 5 for making a UHPC water pipe structure, wherein: and 5, a step of delivery inspection is further included after the step 5, before delivery, the structural performance, the UHPC strength, the component appearance, the component size and the like of the UHPC water pipe structure are inspected according to relevant standards, and delivery can be performed only after the structural performance, the UHPC strength, the component appearance, the component size and the like are qualified.

Technical Field

The invention relates to the field of building materials, in particular to a UHPC water pipe structure and a manufacturing process thereof.

Background

The current water pipe divide into the pressure pipe and do not have and press the pipe two kinds, and the pressure pipe is mostly reinforced concrete pressure pipe, generally adopts prestressed construction, does not have and presses the pipe and generally adopts steelframe concrete structure. The non-pressure pipe is generally used as a sewage pipe, the manufacturing material can be reinforced concrete, cast iron or the combination of several conventional materials, and the reinforced concrete non-pressure pipe has the advantages of large wall thickness, heavy pipe weight, low strength, poor durability and poor impermeability; the cast iron pipe has poor corrosion resistance and high manufacturing cost; the water pipe made of a plurality of materials, such as a PCCP (prestressed concrete cylinder pipe), is not only complex in manufacturing process, but also high in production cost and low in practicability.

Disclosure of Invention

The invention aims to provide a UHPC water pipe structure which has high strength, good toughness, excellent impermeability, durability and corrosion resistance and simplified forming mode and a manufacturing process thereof.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a UHPC water pipe structure which comprises a UHPC concrete pipe core, wherein a water pipe socket is arranged on the outer wall surface of one end of the UHPC concrete pipe core, a water pipe socket is arranged on the inner wall surface of the other end of the UHPC concrete pipe core, and the water pipe socket is used for being spliced with the water pipe socket of the other section of UHPC water pipe structure.

Optionally, a socket rubber gasket is sleeved outside the water pipe socket and is bonded with the outer wall surface of the water pipe socket through rubber glue.

Optionally, a socket rubber gasket is arranged on the water pipe socket, and the socket rubber gasket is bonded with the inner wall surface of the water pipe socket through rubber glue.

Optionally, the cross-sectional shape of the socket rubber gasket is trapezoidal.

Meanwhile, the invention discloses a manufacturing process based on the UHPC water pipe structure, which comprises the following steps:

step 1: cleaning the formed template, and assembling according to the template assembly requirement;

step 2: the preparation of UHPC concrete is carried out, which comprises the following steps:

step 2.1: preparing raw materials meeting the quality requirement, wherein the raw materials comprise cement, mineral admixture, water reducing agent, fine aggregate, drinking water and steel fiber;

step 2.2: calculating the mixing ratio according to a volume method, wherein the water-gel ratio is less than 0.20;

step 2.3: respectively metering various materials according to the calculated matching ratio, and ensuring that the weight error of each material meets the corresponding requirement;

and step 3: putting the raw materials into stirring equipment for stirring;

and 4, step 4: vertically, continuously and uniformly distributing materials in layers in a forming template, and carrying out vibration-free forming on the UHPC water pipe structure;

and 5: and (6) removing the mold.

Optionally, after the forming template is assembled in the step 1, a release agent is coated on the inner surface of the forming template.

Optionally, a maintenance step is further included between the step 4 and the step 5, steam curing or dry heat curing is adopted for maintenance, the belt mold is statically stopped for more than 12 hours before maintenance, the temperature of the static stop environment is not lower than 10 ℃, a plastic film is covered on the exposed surface of the UHPC water pipe structure, the temperature rise and fall rate of maintenance is not more than 20 ℃/h, the constant temperature time is more than 48 hours, and the constant temperature is not more than 90 ℃; and the temperature difference between the surface of the UHPC water pipe structure and the environment is not more than 25 ℃ when the mold is removed.

Optionally, the stirring device in step 3 is a forced stirrer, a blanking device for preventing fiber from agglomerating is arranged in the forced stirrer, and the primary stirring amount of the forced stirrer is not more than 60% of the rated stirring amount.

Optionally, in the step 5, the structure of the UHPC water pipe is not damaged by mould removal, and a vibration mode is not used for mould removal.

Optionally, after the step 5, a step of factory inspection is further included, before factory shipment, the structural performance, the UHPC strength, the member appearance, the member size and the like of the UHPC water pipe structure are inspected according to relevant standards, and only when the UHPC water pipe structure is qualified, the UHPC water pipe structure can be factory shipment.

Compared with the prior art, the invention has the following technical effects:

the UHPC water pipe structure provided by the invention has higher cost performance, fully utilizes the characteristics of high strength, good toughness and excellent impermeability, durability and corrosion resistance of the UHPC, reduces the wall thickness of the water pipe by more than 50 percent, reduces the weight by more than 50 percent and reduces the consumption of reinforcing steel bars by more than 50 percent compared with a common concrete water pipe, adopts UHPC for pouring, effectively solves the problems of corrosion and leakage of a pipeline, enhances the durability of the water pipe, and has strong practicability.

Meanwhile, the invention provides a manufacturing process of the UHPC water pipe structure, which cancels a steel bell and spigot without reinforcing bars, adopts a one-time vibration-free forming method, simplifies the manufacturing process, greatly reduces the manufacturing cost and improves the production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic diagram of the structure of a UHPC water pipe of the present invention;

FIG. 2 is a flow chart of a process for making a UHPC water pipe structure according to the present invention;

wherein the reference numerals are: 1. a UHPC concrete pipe core; 2. a water pipe socket; 3. a water pipe socket; 4. a socket rubber gasket; 5. bellmouth rubber gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 aims to provide a UHPC water pipe structure which has high strength, good toughness, excellent impermeability, durability and corrosion resistance and simplified forming mode and a manufacturing process thereof.

Based on the structure, the invention provides a UHPC water pipe structure, which comprises a UHPC concrete pipe core, wherein the outer wall surface of one end of the UHPC concrete pipe core is provided with a water pipe socket, the inner wall surface of the other end of the UHPC concrete pipe core is provided with a water pipe socket, and the water pipe socket is used for being spliced with the water pipe socket of the other section of UHPC water pipe structure.

Meanwhile, the invention discloses a manufacturing process based on the UHPC water pipe structure, which comprises the following steps:

step 1: cleaning the formed template, and assembling according to the template assembly requirement;

step 2: the preparation of UHPC concrete is carried out, which comprises the following steps:

step 2.1: preparing raw materials meeting the quality requirement, wherein the raw materials comprise cement, mineral admixture, water reducing agent, fine aggregate, drinking water and steel fiber;

step 2.2: calculating the mixing ratio according to a volume method, wherein the water-gel ratio is less than 0.20;

step 2.3: respectively metering various materials according to the calculated matching ratio, and ensuring that the weight error of each material meets the corresponding requirement;

and step 3: putting the raw materials into stirring equipment for stirring;

and 4, step 4: vertically, continuously and uniformly distributing materials in layers in a forming template, and carrying out vibration-free forming on the UHPC water pipe structure;

and 5: and (6) removing the mold.

The UHPC water pipe structure provided by the invention has higher cost performance, fully utilizes the characteristics of high strength, good toughness and excellent impermeability, durability and corrosion resistance of the UHPC, reduces the wall thickness of the water pipe by more than 50 percent, reduces the weight by more than 50 percent and reduces the consumption of reinforcing steel bars by more than 50 percent compared with a common concrete water pipe, adopts UHPC for pouring, effectively solves the problems of corrosion and leakage of a pipeline, enhances the durability of the water pipe, and has strong practicability.

Meanwhile, the invention provides a manufacturing process of the UHPC water pipe structure, which cancels a steel bell and spigot without reinforcing bars, adopts a one-time vibration-free forming method, simplifies the manufacturing process, greatly reduces the manufacturing cost and improves the production efficiency.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.