阅读说明：本技术 一种玄武岩纤维橡胶混凝土力学性能实验方法 (Basalt fiber rubber concrete mechanical property experimental method ) 是由 卢旭刚 于 2021-07-01 设计创作，主要内容包括：本发明公开了一种玄武岩纤维橡胶混凝土力学性能实验方法,涉及混凝土加工技术领域,本发明首先将砂子和再生骨料进行搅拌均匀后,然后在均匀撒入玄武岩纤维中,并且在均撒的过程中进行充分搅拌,保障充分的摩擦接触,待玄武岩纤维充分散成单丝后,再加入水泥、橡胶颗粒和水,再次搅拌混合,其中分散良好的玄武岩纤维在混凝土内部均匀分散,形成纤维网格,能够可以将其内部流动性,有效防止内部微裂痕的产生,达到不强效果,所述玄武岩纤维与水泥基松散界面内含有橡胶颗粒,能够大大改善其橡胶与水泥基的黏结性能,是混凝土更加密实,本发明用于研究玄武岩纤维对橡胶混凝土力学性能的增强效果,提高橡胶混凝土的应用价值,促进废橡胶的回收利用。(The invention discloses an experimental method for mechanical properties of basalt fiber rubber concrete, which relates to the technical field of concrete processing, and is characterized in that sand and recycled aggregate are uniformly stirred, then uniformly scattered into basalt fibers, and fully stirred in the uniformly scattering process to ensure sufficient frictional contact, cement, rubber particles and water are added after the basalt fibers are fully dispersed into monofilaments, and the monofilaments are stirred and mixed again, wherein the well-dispersed basalt fibers are uniformly dispersed in the concrete to form a fiber grid, so that the internal fluidity of the fiber grid can be realized, the internal microcracks can be effectively prevented from being generated, and weak effects can be achieved, the rubber particles are contained in the basalt fibers and cement-based loose interface, the cohesiveness of the rubber and the cement base can be greatly improved, the concrete is more compact, and the experimental method is used for researching the reinforcing effect of the basalt fibers on the mechanical properties of the rubber concrete, the application value of the rubber concrete is improved, and the recycling of the waste rubber is promoted.)

1. The basalt fiber rubber concrete is characterized by comprising the following raw materials in parts by weight:

the grain size of the natural river sand is 5-20mm, the grain size of the recycled aggregate is 5-20mm, the grain size of the rubber particles is 1-2mm, the equivalent diameter of the strand-shaped chopped basalt fiber is 0.015mm and water are added;

wherein the average length of the strand-shaped chopped basalt fiber is 20 mm.

2. The basalt fiber rubber concrete mechanical property experimental method according to claim 1, characterized in that: the fineness modulus of the natural river sand is 2.8, and the mud content is 0.5%.

3. The basalt fiber rubber concrete mechanical property experimental method according to claim 1, characterized in that: the recycled aggregate is obtained by crushing a concrete member.

4. The basalt fiber rubber concrete mechanical property experimental method according to claim 1, wherein the rubber particles are prepared from waste rubber or rubber powder.

5. The basalt fiber rubber concrete mechanical property experimental method according to claim 1, wherein the concrete flow steps are as follows:

s1, preparing 370 parts of cement, 230 parts of natural river sand, 150 parts of recycled aggregate, 60 parts of rubber particles, 70 parts of bundled chopped basalt fibers and 120 parts of water.

S2: and uniformly stirring the natural river sand and the recycled aggregate at 20r/min by using a stirrer to prepare a first mixture.

And S3, uniformly scattering the strand-shaped chopped basalt fibers into the first mixture, and dispersing the strand-shaped chopped basalt fibers into monofilaments at 25r/min by using a stirrer to prepare a second mixture.

And S4, adding cement, rubber particles and water into the second mixture, mixing again by a mixer at 25r/min to prepare concrete, and naturally curing for 7-28 days.

Technical Field

The invention relates to the technical field of basalt fiber rubber concrete research, in particular to a mechanical property experiment method for basalt fiber rubber concrete.

Background

The basalt fiber is a green inorganic fiber which is gradually popularized and used in recent years, is prepared by taking pure natural volcanic eruption rock as a raw material through a 1450-1500 ℃ high-temperature melting and then rapid wire drawing process, has no environmental pollution in the production and application processes, and has natural compatibility and excellent mechanical properties. The application of basalt fiber in concrete engineering is concerned by scholars at home and abroad, and the technical bottleneck of how to process and treat the basalt fiber and the rubber particles needs to be broken through in the popularization process of the basalt fiber rubber particle concrete.

Disclosure of Invention

The invention aims to provide a mechanical property experiment method of basalt fiber rubber concrete, which is used for researching the enhancement effect of basalt fiber on the mechanical property of the rubber concrete, improving the application value of the rubber concrete and promoting the recycling of waste rubber.

In order to achieve the purpose, the invention provides the following technical scheme: comprises the following raw materials in parts by weight:

the grain size of the natural river sand is 5-20mm, the grain size of the recycled aggregate is 5-20mm, the grain size of the rubber particles is 1-2mm, the equivalent diameter of the strand-shaped chopped basalt fiber is 0.015mm and water are added;

wherein the average length of the strand-shaped chopped basalt fiber is 20 mm.

The fineness modulus of the natural river sand is 2.8, and the mud content is 0.5%.

The recycled aggregate is obtained by crushing a concrete member.

The rubber particles are prepared from waste rubber or rubber powder.

A basalt fiber rubber concrete mechanical property experimental method comprises the following process steps:

s1, preparing 370 parts of cement, 230 parts of natural river sand, 150 parts of recycled aggregate, 60 parts of rubber particles, 70 parts of bundled chopped basalt fibers and 120 parts of water.

S2: and uniformly stirring the natural river sand and the recycled aggregate at 20r/min by using a stirrer to prepare a first mixture.

And S3, uniformly scattering the strand-shaped chopped basalt fibers into the first mixture, and dispersing the strand-shaped chopped basalt fibers into monofilaments at 25r/min by using a stirrer to prepare a second mixture.

And S4, adding cement, rubber particles and water into the second mixture, mixing again by a mixer at 25r/min to prepare concrete, and naturally curing for 7-28 days.

Compared with the prior art, the invention has the beneficial effects that: the basalt fiber reinforced concrete rubber reinforcing agent is used for researching the reinforcing effect of basalt fibers on the mechanical property of rubber concrete, improving the application value of the rubber concrete and promoting the recycling of waste rubber.

Detailed Description

The described embodiments of the invention are only some, but not all embodiments of the invention. 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.

Example 1

Taking 370 parts of cement, 230 parts of natural river sand, 150 parts of recycled aggregate, 60 parts of rubber particles, 70 parts of bundled chopped basalt fibers and 120 parts of water, uniformly stirring the natural river sand and the recycled aggregate at 20r/min by using a stirrer to prepare a first mixture, uniformly scattering the bundled chopped basalt fibers into the first mixture, dispersing the bundled chopped basalt fibers into monofilaments at 25r/min by using the stirrer again to prepare a second mixture, finally adding the cement, the rubber particles and the water into the second mixture, mixing at 25r/min by using the stirrer again to prepare concrete, and naturally curing for 7 d.

Example 2

370 parts of cement, 230 parts of natural river sand, 150 parts of recycled aggregate, 60 parts of rubber particles, 70 parts of bundled chopped basalt fibers and 120 parts of water are taken, the natural river sand and the recycled aggregate are uniformly stirred at 20r/min by using a stirrer to prepare a first mixture, the bundled chopped basalt fibers are uniformly scattered into the first mixture, the bundled chopped basalt fibers are dispersed into monofilaments at 25r/min by using the stirrer again to prepare a second mixture, finally, the cement, the rubber particles and the water are added into the second mixture, the mixture is mixed at 25r/min by using the stirrer again to prepare concrete, and the concrete is naturally cured for 28 days.

Example 3

370 parts of cement, 230 parts of natural river sand, 60 parts of rubber particles, 70 parts of bundle-shaped chopped basalt fibers and 120 parts of water are taken, the bundle-shaped chopped basalt fibers are added into the natural river sand, the mixture is stirred at 40r/min by using a stirrer to prepare a first mixture, then the cement, the rubber particles and the water are added into the first mixture, the mixture is mixed at 25r/min by using the stirrer again to prepare concrete, and the concrete is naturally cured for 7 d.

Example 4

370 parts of cement, 230 parts of natural river sand, 60 parts of rubber particles, 70 parts of bundle-shaped chopped basalt fibers and 120 parts of water are taken, the bundle-shaped chopped basalt fibers are added into the natural river sand, the mixture is stirred at 40r/min by using a stirrer to prepare a first mixture, then the cement, the rubber particles and the water are added into the first mixture, the mixture is mixed at 25r/min by using the stirrer again to prepare concrete, and the concrete is naturally cured for 28 d.

Table one: and (5) testing the mechanical property of the basalt fiber rubber concrete.

Through the analysis of the experimental data, the embodiment 4 is superior to other embodiments, which shows that the reinforcement of the strand-shaped chopped basalt fiber concrete is favorable, and the effect of the concrete doped with the rubber particles is better than that of the common concrete.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.