What is ceramsite concrete? How many ceramsite grains are needed per cubic meter of ceramsite concre

It is also known as lightweight aggregate concrete (1ightaggregate concrete). It is formulated from cementitious material and light aggregate, and the bulk density is not more than 1900kg m3. It can be divided into full light concrete (with light sand) and sand light concrete (with ordinary sand).

According to the use, it can be divided into thermal insulation: the density is less than 800kg m3; Structural insulation: density of 800 1400kg m3; Structural use:

The density is more than 1400kg m3. The heat resistance and fire resistance of lightweight aggregate concrete are better than those of ordinary concrete, but the elastic modulus is lower. Light aggregate concrete with ceramsite as coarse aggregate and ordinary sand or terracotta sand as fine aggregate is called ceramsite concrete.

The strength of ceramsite concrete for structure can be greater than 40MPa, and the thermal insulation and heat resistance performance are good. It can be used for house construction, bridges, ships and kiln foundations.

According to the apparent density, concrete can be divided into: heavy concrete, ordinary concrete, and light concrete. The difference between these three concrete is the difference in aggregates.

Light concrete is concrete with an apparent density of less than 1950kg m. It can be divided into three categories: 1. Light aggregate concrete, whose apparent density is 800 1950kg m, light aggregate includes pumice, volcanic slag, ceramsite, expanded perlite, expanded slag, slag, etc.

The following introduction is omitted).

So ceramsite concrete is a kind of light aggregate concrete, that is, a kind of light concrete. It differs from ordinary concrete in that the aggregate is ceramsite instead of stone.

Concrete with ceramsite as the main aggregate is called ceramsite concrete. The strength of ceramsite concrete is generally 10MPa, 15MPa, 20MPa, respectively

8-24mm, 8-16mm, 8-12mm, 4-8mm, 2-4mm plus 4-8mm.

It is a lightweight ceramsite mixed with sand and cement, mainly to reduce the load bearing of the ground.

Concrete is one of the most abundant building materials in modern engineering structures." Half of the concrete is cement, the other half is aggregate, the main role of cement is adhesion, and the role of aggregate is support. In the past, aggregates were mostly natural aggregates, natural aggregates such as sand, pebbles, etc., and ceramsite is a light aggregate also known as light aggregate, which generally refers to a porous aggregate with a loose bulk density of less than 1000 kg.

It is mainly used for the preparation of light aggregate concrete, thermal insulation mortar and refractory concrete, etc., and can also be used as thermal insulation loose filler. The performance of light aggregates is very different compared to ordinary aggregates. The main performance indicators to measure the quality of light aggregate are loose bulk density, cylinder compressive strength and water absorption.

Advantages of ceramsite concrete: light weight and high strength, thermal insulation, sound absorption and sound insulation, fire and earthquake resistance, anti-seepage and anti-frost, alkali resistance and crack resistance (self-maintenance). Light weight (high specific strength):

The density of ceramsite is about half of that of ordinary gravel, so the ceramsite concrete is about 20% lighter than that of ordinary concrete, and the burden of transportation and handling is reduced. The bulk density of light aggregate concrete from 40MPa to 50MPa can be maintained at 1700kg m -1900kg m, which is about 1 5 lighter than ordinary concrete. Moisture absorption:

The inside of the ceramsite has a microporous ceramic particle, which can achieve the effect of moisture absorption. In addition, other characteristics such as strong adsorption and dirt interception ability, good physical, chemical and hydraulic properties of ceramsite are suitable filling materials for this specific environment of the bathroom.

Ceramsite concrete, commonly known as "lightweight concrete", solves the defect of small selection margin for surface dry density of ordinary concrete, and makes the selection range of surface dry density of concrete more perfect. The density grades of ceramsite light concrete are divided into; 1000;……1800;1900 (kg/m3)。

Ceramsite concrete has the following characteristics:

1. Ceramsite concrete is light in weight, its dry bulk density is 800---1900kg m3, lighter than ordinary concrete 2 3-1 5, the number can be reached, due to the light weight, the foundation load can be reduced, so the weight of the whole building can be reduced;

2. Ceramsite concrete has good thermal insulation performance and small heat loss. The thermal conductivity of ceramsite concrete is generally more than half lower than that of ordinary concrete, so it can reduce the thickness of the wall, increase the living area accordingly, and greatly improve the thermal insulation performance of the room under the condition of the same wall thickness.

Due to its light weight, low elastic modulus, and large allowable variation performance, ceramsite concrete has good seismic performance.

3. Ceramsite concrete has good impermeability. The surface of ceramsite is rougher than that of gravel and has a certain water absorption capacity, so the adhesion ability between ceramsite and cement sand is stronger, so ceramsite concrete has high impermeability and durability.

4. Ceramsite concrete has good fire resistance. The results of the fire test show that its fire resistance limit temperature can reach more than 3 hours. The refractory limit temperature of ordinary concrete is generally hours.

5 ceramsite concrete has the characteristics of strong construction adaptability, it can not only be based on the different uses and bearing capacity of the building, the preparation of concrete materials with different bulk density and strength (according to the structure or load-bearing structure used for thermal insulation), and the construction is simple, suitable for industrial production of various construction methods, it can not only use the manufacturing process to make various types of components (such as plates, blocks, beams, columns, etc.) and can adopt cast-in-place mechanized construction. The strong adaptability of ceramsite concrete construction is incomparable to any other lightweight building materials (such as aerating, etc.).

Enclosures or thermal structures that are mainly used for thermal insulation.

Structural insulation ceramsite light concrete CL10

cl15；CL201200--1600 is mainly used for envelope structures that are both load-bearing and insulated.

Structure: ceramsite light concrete Cl20 Cl25 ; cl30 cl40 ; cl45 cl50 ;1400--1900 is mainly used for load-bearing structures or structures.

Summary. The amount of ceramsite in the mix ratio of ceramsite concrete is usually between 20% and 50%, which means that the amount of ceramsite required per cubic meter is between 200kg and 500kg. However, the specific dosage needs to be adjusted according to the actual situation.

The amount of ceramsite in the absolute mix ratio of ceramic and grain concrete is usually between 20% and 50%, that is to say, the amount of ceramsite required per cubic meter is between 200kg and 500kg. However, the dosage of the shirt body needs to be adjusted according to the actual situation.

The mix ratio of ceramsite concrete will vary according to the specific engineering requirements and use conditions, so the amount of ceramsite required per cubic meter will also vary.

How much sand, cement, ceramsite is required for one cubic of concrete, and the amount of sand, cement and ceramsite required for one cubic concrete depends on the specific concrete mix ratio. Here are some common concrete mixes and the amount of material they require:1

Ordinary Concrete Mix Ratio: Cement: Sand:

Stone = 1:2:3, water-cement ratio is.

The amount of material required for a cubic of concrete is: about 300kg of cement, about 600kg of sand, and about about light concrete mix ratio: cement:

Sand: expansion differential: water = , water-cement ratio is.

The amount of material required for a cubic of concrete coagulation is about 200kg, about 300kg of sand, about 10kg of expansion agent, and about 10kg of water ceramsite concrete

Sand:ceramsite = 1:1:

2. The water-cement ratio is. The amount of material required for a cubic of concrete is: about 200kg of cement, about 200kg of sand, and about 400kg of ceramsite.

Ceramsite concrete refers to a new type of concrete made by using ceramsite as aggregate and adding an appropriate amount of cement, water, sand, etc. Ceramite concrete, commonly known as "lightweight concrete", solves the defect of small selection of surface dry density of ordinary concrete, makes the selection range of concrete surface dry density more perfect, and is widely used in house construction, bridges, ships and kiln foundations.

Precautions for the use of ceramsite concrete: 1. Material requirements: ceramsite concrete has a lot of superior properties, but if you want to better play these superior properties, you must ensure the cooperation between various materials and the construction process, so when using ceramsite concrete for construction, you must determine the quality of the material in advance, all materials not only need to be selected according to the construction plan, but also need to accept the relevant quality inspection when entering the construction site, after determining the qualification, before it can be put into use.

2. Construction skills: when using ceramsite concrete for construction, it is generally divided into several layers to carry out construction, under normal circumstances, before the surface layer construction at the top position, the bottom cushion should be cured first, and it needs to be maintained in a room temperature environment, and the construction can be carried out only after 3 days of curing. When the surface layer is constructed at the top position, a layer of protective material should also be covered on the cushion, and the mortar should not be stirred on the cushion, and sundries such as paint buckets should not be placed.

3. Mixing water: Compared with ordinary concrete, ceramic concrete has a small surface density, large gaps, and strong water absorption capacity. Therefore, during the construction process, it is necessary to pay attention to mixing on site, and pay attention to strictly controlling the amount of water when stirring.

In addition, after laying the ceramsite concrete, attention should also be paid to the use of mechanical vibration tamping.