CN102674884A

CN102674884A - Concrete block and preparation method thereof

Info

Publication number: CN102674884A
Application number: CN2012101867537A
Authority: CN
Inventors: 胡伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-08
Filing date: 2012-06-08
Publication date: 2012-09-19

Abstract

The invention provides a concrete block and a preparation method thereof. The concrete block is capable of achieving and exceeding requirements of the national standard for bricks for building in terms of weight and strength under the condition that low cost is ensured. The concrete block is composed of 1 part to 2 parts of water, 1 part to 2 parts of coal ash, 1 part to 2 parts of sand, 1 part to 2 parts of cement and foam by weight. The size of the foam occupies 8%-15% of the total size of the coal ash, the sand and the cement. The prepared concrete block is of a hollow structure. The preparation method of the concrete block includes stirring the raw materials evenly according to proportion, pouring the materials into a hollow mould, conducting demolding after solidification and conducting nourishment for 7 days. The concrete block simultaneously overcomes the shortcomings of foam concrete bricks, hollow bricks and ceramsite bricks, demonstrates the advantages and facilitates popularization and application.

Description

A kind of concrete segment and preparation method thereof

Technical field

The present invention relates to a kind of concrete segment that can replace Haydite bricks, hollow brick and foam concrete block to use, and the preparation method of this building block.

Background technology

Now, building brick is roughly following several kinds, and the one, the foamed concrete brick; Main way is in concrete, to squeeze into foam, because GB requires the intensity of brick will reach 5MPa, and weight can not be above 900 kilograms/cubic metre; For satisfying the requirement of GB to weight, unit in charge of construction can squeeze into the foam that accounts for brick TV 60% in concrete, do so promptly and can economize in raw materials; Can reach the weight that GB requires again, with the reply inspection.But have a problem that can not be ignored to be exactly, the intensity of brick reduces significantly, does not reach the GB requirement at all, and this buries serious hidden danger with regard to the safety of giving buildings.

The another kind of buildings is a hollow brick with brick; Its material generally is flyash, stone flour, sand, cement etc.; Though hollow brick generally can both reach the GB requirement on intensity, their simultaneous defectives are weight big (unit weight are high), and every cubic metre weight is all more than 1000 kilograms basically; Use the buildings load of this brick very big, have serious potential safety hazard.

Also having a kind of brick is Haydite bricks, is to fire with haydite soil to form, and Haydite bricks has preceding two kinds of advantages that brick did not have; The weight and the intensity that are exactly it can reach the GB requirement; But also have a very important problem to be exactly, its complex manufacturing technology, cost is high.Such as the Haydite bricks of 190 mm * 190 mm * 390mm volume, just about 3.38 yuan, this expensive brick has also seriously influenced its popularization and use to cost.

The method of manufacture (publication number CN1528579A) that one Chinese patent application number 03134799.1 discloses a kind of light concrete product on September 15th, 2004; It is that materials such as cement, sand are put into stirrer; Add water and mix into sand-cement slurry, utilize the system infusion to produce foam on the other hand simultaneously, in the sand-cement slurry whipping process, add foam; Lather volume accounts for 1 of concrete product TV～1.5 ‰, and the weight of perhaps pressing weight concrete 1/35th adds.Though this technology can alleviate the weight of concrete segment to a certain extent, for the requirement of GB, this technology still can't reach.

Summary of the invention

The purpose of this invention is to provide a kind of concrete segment and preparation method thereof, guaranteeing on weight and intensity, to meet and exceed the requirement of GB simultaneously under the situation with low cost building brick.

Said purpose realizes through following scheme:

A kind of concrete segment; Form by water, flyash, sand, cement and foam; By weight; The ratio of water, flyash, sand, cement is 1～2:1～2:1～2:1～2, and said foam accounts for 8%～15% of water, flyash, sand, cement TV, and the concrete segment of processing is a hollow structure.

Said foam does, whipping agent adds behind the water to 50-100 times of gained foam of its volumetric expansion.

Said sand was 400～500 mesh sieve gained.

Said flyash was 800～1200 mesh sieve gained.

Said cement model is No. 325 cement.

The part by weight of water, flyash, sand, cement is 1～1.2:1～1.2:1～1.2:1～1.2, and said foam accounts for 11～13% of water, flyash, sand, cement TV.

The part by weight of water, flyash, sand, cement is 1.3～1.5:1.1～1.2:1～1.1:1.8～1.9, and said foam accounts for 12～14% of water, flyash, sand, cement TV.

The part by weight of water, flyash, sand, cement is 1.1～1.2:1.2～1.6:1.5～1.9:1.5～1.7, and said foam accounts for 9～11% of water, flyash, sand, cement TV.

Have the blind hole that several are arranged side by side above the said concrete segment, the volume of said blind hole accounts for 30～60% of whole building block TV.

A kind of preparation method of concrete segment, the preparation process is following successively, in cement, adds the water of equivalent weight; Add again after stirring and heavy sand such as cement, add again after stirring and heavy flyash such as cement, after stirring; Add the foam that accounts for front TV 8%～15% again, after stirring, pour in the hollow mould; Solidify rear demoulding, health got final product in 7 days.

Patent of the present invention, foam account for about 10% of building block TV, and advantage is that intensity is big; Weight for therefore bringing simultaneously is big, and solution provided by the invention is to be made into hollow block construction, therefore; Experiment showed, this patent and foamed concrete brick ratio in a large number, equivalent weight and volume are (under the situation such as 190 mm * 190 mm * 390mm); The intensity of foamed concrete is 3～4MPA, and this patent can reach 8～12MPA.This patent and hollow brick ratio, (such as the hollow brick of 190 mm * 190 mm * 390mm), intensity is the same, and hollow brick weight is 25～30 jin, and the weight of this patent is 12～16 jin, about one times of weight saving for equal volume.This patent and Haydite bricks ratio, weight is the same, and intensity is the same, and (the Haydite bricks cost such as 190 mm * 190 mm * 390mm) is 3.38 yuan to equal volume, and the cost of this patent is about 2.11 yuan.Therefore, this patent has overcome the shortcoming of foamed concrete brick, hollow brick and Haydite bricks simultaneously and has shown their advantage, is beneficial to and applies.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Embodiment

Below set forth in detail the preferred embodiment of the present invention.

Embodiment one

Said foam does; Whipping agent is added behind the water to 50-100 times of gained foam of its volumetric expansion, whipping agent can be of the prior art any one, the whipping agent of producing such as Hua Tai company; Or match Gao Su (TRICOSAL) S-45 system infusion, can realize the object of the invention.

Said sand was preferably 400～500 mesh sieve gained, and flyash was 800～1200 mesh sieve gained, and the cement model is No. 325 cement, and the concrete segment intensity of processing is high, and binding property is good.

Its preparation process is following successively, in cement, adds water according to the above ratio, adds sand after stirring again according to the above ratio; Add flyash after stirring in proportion, after stirring, add foam more in proportion; After stirring; Pour into (can be the mould of preparation hollow brick) in the hollow mould, solidify rear demoulding, health got final product in 7 days.

Embodiment two

The difference of present embodiment and embodiment one is; The part by weight of water, flyash, sand, cement is 1～1.2:1～1.2:1～1.2:1～1.2; Said foam accounts for 11～13% of water, flyash, sand, cement TV; With reference to Fig. 1, have four blind holes that are arranged side by side 2 above the made concrete segment 1, the volume of said blind hole accounts for 30～60% of whole building block TV.The number of blind hole and shape should not limit when reality is used, and those skilled in the art can confirm as required, as long as guarantee the ratio between its cubic capacity and the building block TV.

Embodiment three

The difference of present embodiment and embodiment two is; The part by weight of water, flyash, sand, cement is 1.3～1.5:1.1～1.2:1～1.1:1.8～1.9; Said foam accounts for 12～14% of water, flyash, sand, cement TV, and the volume of blind hole accounts for 35% of building block TV above the concrete segment.

Embodiment four

The difference of present embodiment and embodiment two is; The part by weight of water, flyash, sand, cement is 1.1～1.2:1.2～1.6:1.5～1.9:1.5～1.7; Said foam accounts for 9～11% of water, flyash, sand, cement TV, and the volume of blind hole accounts for 55% of building block TV above the concrete segment.

Embodiment five

The difference of present embodiment and embodiment one is; The part by weight of water, flyash, sand, cement is 1:1:1:1; Said foam accounts for 8% of water, flyash, sand, cement TV, and the volume of blind hole accounts for 60% of building block TV above the concrete segment.

Embodiment six

The difference of present embodiment and embodiment two is; The part by weight of water, flyash, sand, cement is 1.2:1.9:1:2; Said foam accounts for 15% of water, flyash, sand, cement TV, and the volume of blind hole accounts for 30% of building block TV above the concrete segment.

Embodiment seven

The difference of present embodiment and embodiment two is; The part by weight of water, flyash, sand, cement is 1.5:2:1:1.8; Said foam accounts for 9～11% of water, flyash, sand, cement TV, and the volume of blind hole accounts for 45% of building block TV above the concrete segment.

Embodiment eight

The difference of present embodiment and embodiment two is; The part by weight of water, flyash, sand, cement is 1:2:1.5:1.7; Said foam accounts for 12% of water, flyash, sand, cement TV, and the volume of blind hole accounts for 40% of building block TV above the concrete segment.

Embodiment nine

The difference of present embodiment and embodiment two is; The part by weight of water, flyash, sand, cement is 1.1:1.6:1:1.5; Said foam accounts for 13% of water, flyash, sand, cement TV, and the volume of blind hole accounts for 37% of building block TV above the concrete segment.

Embodiment ten

The difference of present embodiment and embodiment two is; The part by weight of water, flyash, sand, cement is 1.6:1.8:1.1:1.7; Said foam accounts for 10% of water, flyash, sand, cement TV, and the volume of blind hole accounts for 50% of building block TV above the concrete segment.

This embodiment is the protection domain that the exemplary illustration of this patent is not limited it; Those skilled in the art can also carry out the part to it and change; The short of spirit that exceeds this patent all is regarded as the replacement that is equal to this patent, all within the protection domain of this patent.

Claims

1. concrete segment; It is characterized in that forming by water, flyash, sand, cement and foam; By weight; The ratio of water, flyash, sand, cement is 1～2:1～2:1～2:1～2, and said foam accounts for 8%～15% of water, flyash, sand, cement TV, and the concrete segment of processing is a hollow structure.

2. concrete segment according to claim 1 is characterized in that said foam does, whipping agent adds behind the water to 50-100 times of gained foam of its volumetric expansion.

3. concrete segment according to claim 1 is characterized in that said sand was 400～500 mesh sieve gained.

4. concrete segment according to claim 1 is characterized in that said flyash was 800～1200 mesh sieve gained.

5. concrete segment according to claim 1 is characterized in that said cement model is No. 325 cement.

6. according to any described concrete segment of claim 1-5; The part by weight that it is characterized in that water, flyash, sand, cement is 1～1.2:1～1.2:1～1.2:1～1.2, and said foam accounts for 11～13% of water, flyash, sand, cement TV.

7. according to any described concrete segment of claim 1-5; The part by weight that it is characterized in that water, flyash, sand, cement is 1.3～1.5:1.1～1.2:1～1.1:1.8～1.9, and said foam accounts for 12～14% of water, flyash, sand, cement TV.

8. according to any described concrete segment of claim 1-5; The part by weight that it is characterized in that water, flyash, sand, cement is 1.1～1.2:1.2～1.6:1.5～1.9:1.5～1.7, and said foam accounts for 9～11% of water, flyash, sand, cement TV.

9. according to any described concrete segment of claim 1-5, it is characterized in that having the blind hole that several are arranged side by side above the said concrete segment, the volume of said blind hole accounts for 30～60% of whole building block TV.

10. the preparation method of a concrete segment is characterized in that the preparation process is following successively, in cement, adds the water of equivalent weight; Add again after stirring and heavy sand such as cement, add again after stirring and heavy flyash such as cement, after stirring; The foam that adds front TV 8%～15% again after stirring, is poured in the hollow mould; Solidify rear demoulding, health got final product in 7 days.