CN101037346A

CN101037346A - Porous light hollow brick

Info

Publication number: CN101037346A
Application number: CNA200710027718XA
Authority: CN
Inventors: 陈观生; 张仁元; 柯秀芳
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2007-04-26
Filing date: 2007-04-26
Publication date: 2007-09-19

Abstract

The invention discloses a porous light air brick, which is composed of foam plastic and clay, in which the foam plastic can be a waste packing material hard to be degraded naturally. The proportion of the material is: 20-70% by volume of foam plastic, 80-30% by volume of clay. The process is as follows: blending the materials to make the foam articles distribute uniformly and preparing to the adobe; drying the adobe by natural airiness or sunlight (ensuring the shape maintenance of the adobe during this period); baking the adobe in the kiln after drying; and getting the uneven distributing porous light air brick with different void ratio and void size depending on the difference of the proportion and standard of the foam plastic. The bulk weight, coefficient of heat conductivity, heat-insulating property, loading capacity of the brick changes according to the alteration of the void ratio and void size are obtained.

Description

Porous light hollow brick

Technical field

The invention belongs to building masonry wall insulation and field of energy-saving technology, be specifically related to a kind of porous light hollow brick.

Background technology

The wall body building material requirement is big, uses widely, is the main raw of building the house, and its weight accounts for about 60% of buildings gross weight in construction work.At present, the building of China more than 80% generally adopts the clay solid brick, especially vast Rural areas.Related data shows that the output of China's clay solid brick in 2000 is about 8,000 hundred million.Because the raw materials consumption of clay solid brick is many, unit weight is big, thermal conductivity is high, heat-insulating property is poor, its mass production and use can bring a series of problem: 1) consume a large amount of soil (a lot of or even arable land) resource; 2) consume a large amount of energy in the sintering procedure; 3) thus the weight that increases buildings causes the increase of building foundation and supporting structure cost; 4) expense of buildings winter heating and summer air-conditioning increases.At these shortcomings of clay solid brick, carried out the production and the popularization of a large amount of new wall materials in recent years both at home and abroad, also obtained some progress.The following aspects is arranged specifically:

1) produces exploitation clay hollow brick.This way has certain saving to land resources and energy consumption, but because its hollow hole is that mechanical through hole and single hole space are bigger, and the thermal conductivity of brick is still bigger, its heat-insulating property can not satisfy modern architecture to requirements of saving energy;

2) utilize industrial residue (flyash, coal gangue, slag and slag etc.) to produce sintered hollow block or perforated brick.This way all has certain saving to land resources and energy consumption, and thermal conductivity also decreases because of it can be made into perforated brick, but its production technique is comparatively complicated, and cost is also higher, is subjected to raw-material limiting output also to be difficult to increase sharply in addition;

3) utilize silt to produce hollow brick.Output is subjected to raw-material restriction;

4) produce gas concrete.Cost is higher.

Generally speaking along with the production of these novel wall material of construction is used, played certain effect for the use that reduces the clay solid brick, but because the difficulty that its inherent defective causes big area to promote, therefore using on the total amount still seldom, proportion not high yet (less than total amount 20%), the clay solid brick is still in a large amount of uses.Therefore develop that a kind of raw materials consumption amount is few, unit weight is little, thermal conductivity is low, good heat insulating, bearing capacity meets the requirements and the simple novel wall material of construction of production technique, big area substitutes existing clay solid brick, is a very urgent task.

Summary of the invention

The purpose of this invention is to provide that a kind of land resources consumption is few, unit weight is little, thermal conductivity is low, good heat insulating, bearing capacity meets the requirements and the simple novel wall material of construction of production technique.The present invention is a raw material with porous plastics, clay mainly, mixes the back roasting by porous plastics and clay and forms, and wherein porous plastics can be the discarded wrapping material that are difficult to natural degradation.With desired raw material according to a certain percentage, the volume percent of porous plastics is 20%～70% usually during production, and the volume percent of clay is 80%～30%, mixes stirring and foam beads is evenly distributed, and makes adobe.Utilize natural ventilation or sunshine with brick bat drying, during must guarantee the shape invariance of adobe, put into kiln behind the brick bat drying and fire according to certain technology, maturing temperature is 700～900 ℃.The hole of brick is formed by the porous plastics sintering, and the hole ratio of brick equals the volume percent that porous plastics accounts for raw material.Difference according to porous plastics proportioning and specification, can obtain different hole ratios and bore hole size, the irregular equally distributed porous light hollow brick of hole, performance perameters such as its unit weight, thermal conductivity, heat-insulating property, bearing capacity are respective change with the change of hole ratio and bore hole size.

Comparing the beneficial effect that the present invention has with known technology is:

1) can be that various porous plastics are used to the discarded wrapping material that are difficult to natural degradation, help the protection of environment;

2) consumption of minimizing soil (a lot of or even arable land) resource;

3) save the required energy in the sintering procedure;

4) thus the weight that alleviates buildings reduces the cost of building foundation and supporting structure;

5) expense of reduction buildings winter heating and summer air-conditioning.

Description of drawings

Fig. 1 is a porous light hollow brick internal structure synoptic diagram.

The netted clay layer behind hole 2. sintering behind 1. sintering wherein

Embodiment

Embodiment 1

With volume percent is 20% porous plastics, is to make adobe after 80% the clay mixing and stirring with volume percent, fires by technology, obtains porous light hollow brick.After testing, the unit weight of this brick, thermal conductivity and bearing capacity are respectively: 1448kg/m ³, 0.231W/ (mK), 1.53MPa.

Embodiment 2

With volume percent is 30% porous plastics, is to make adobe after 70% the clay mixing and stirring with volume percent, fires by technology, obtains porous light hollow brick.After testing, the unit weight of this brick, thermal conductivity and bearing capacity are respectively: 1235kg/m ³, 0.207W/ (mK), 1.36MPa.

Embodiment 3

With volume percent is 40% porous plastics, is to make adobe after 60% the clay mixing and stirring with volume percent, fires by technology, obtains porous light hollow brick.After testing, the unit weight of this brick, thermal conductivity and bearing capacity are respectively: 1087kg/m ³, 0.182W/ (mK), 1.18MPa.

Embodiment 4

With volume percent is 50% porous plastics, is to make adobe after 50% the clay mixing and stirring with volume percent, fires by technology, obtains porous light hollow brick.After testing, the unit weight of this brick, thermal conductivity and bearing capacity are respectively: 911kg/m ³, 0.161W/ (mK), 0.916MPa.

Embodiment 5

With volume percent is 60% porous plastics, is to make adobe after 40% the clay mixing and stirring with volume percent, fires by technology, obtains porous light hollow brick.After testing, the unit weight of this brick, thermal conductivity and bearing capacity are respectively: 708kg/m ³, 0.114W/ (mK), 0.63MPa.

Embodiment 6

With volume percent is 70% porous plastics, is to make adobe after 30% the clay mixing and stirring with volume percent, fires by technology, obtains porous light hollow brick.After testing, the unit weight of this brick, thermal conductivity and bearing capacity are respectively: 530kg/m ³, 0.092W/ (mK), 0.54MPa.

Claims

1. a porous light hollow brick is characterized in that this brick mixes the back roasting by porous plastics and clay and forms, and the volume percent that above-mentioned porous plastics accounts for raw material is 20%～70%, and the volume percent that clay accounts for raw material is 80%～30%;

2. porous light hollow brick according to claim 1 is characterized in that the hole of above-mentioned brick is formed by the porous plastics sintering, and the hole ratio of brick equals the volume percent that porous plastics accounts for raw material.

3. porous light hollow brick according to claim 1 and 2, the hole that it is characterized in that above-mentioned brick is irregular uniform distribution, hole ratio and bore hole size account for the ratio and the specifications vary thereof of raw material with porous plastics.

4. porous light hollow brick according to claim 1 is characterized in that unit weight, thermal conductivity, heat-insulating property, the bearing capacity of above-mentioned brick changes with the change of hole ratio and bore hole size.

5. porous light hollow brick according to claim 1 and 2, the maturing temperature that it is characterized in that above-mentioned brick is 700～900 ℃.