CN1151979A

CN1151979A - Prodn process and equipment of self-cured light concrete

Info

Publication number: CN1151979A
Application number: CN96112699A
Authority: CN
Inventors: 彭羽翔; 张世谦; 陈耀珠
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-24
Filing date: 1996-10-24
Publication date: 1997-06-18

Abstract

Self-cured light concrete as a building material is produced with coal ash, cement and water and through high-speed stirring in stirrer, mixing with magnesium chloride as excitant, aluminium sulfate as surfactant, and hydrogen peroxide as foaming agent and through swelling in mould, cutting and demoulding. Without steam curing, the said technological process can save power, reduce production cost, and avoid environment pollution, and the concrete product is superior to steam cured one in compressive, fracture and shock strength and other physcial and chemical indexes.

Description

The making method of self-cured light concrete and equipment

The making method of self-cured light concrete of the present invention and equipment belong to concrete or similar building material field, particularly relate to a kind of method of utilizing flyash to produce light weight concrete.

Utilize flyash to produce light concrete product, the steam-cured mode of general employing, make a large amount of bubble of concrete product portion's generation within it, alleviate the weight of concrete product, improve the quality of concrete product, adopt vapor cure, production unit has high input, energy consumption height, production cost height, and produce new environmental pollution, limited the consumption of light concrete product; Adopt the light concrete product of spontaneous combustion maintenance, the flyash consumption is few, and the resistance to compression of the light concrete product of producing, anti-folding, physical and chemical index such as shock-resistant are low, can not satisfy the demand.

The objective of the invention is to avoid deficiency of the prior art and provide the non-evaporating method of a kind of employing natural curing to produce high-quality fly ash aerated light concrete product.

The objective of the invention is to reach by following measure, it is to utilize to contain a large amount of silicon-dioxide in the flyash, aluminium sesquioxide, cement is hydraulic cementing materials, pass through tensio-active agent, the effect of exciting agent, make the silicon-dioxide in the flyash, free hydrogen calcium oxide generation chemical transformation in aluminium sesquioxide and the cement, generation has high-intensity calsil and aluminum calcium salt etc., it is with flyash 43%-62%, cement 30%-52% sends into stirrer and mixes, add a certain amount of water, through 700 rev/mins of stirrer high-speed stirring, add exciting agent 0.05%-0.08%, tensio-active agent 2.25%-2.92% fully stirs the back and adds whipping agent 2.7%-5%, and it is expanded to put into shaper after the stirring, cutting after 6-10 hour, depanning after 24 hours, natural Health preservation 7-10 days, the use of can dispatching from the factory.Tensio-active agent is to adopt Tai-Ace S 150 or potassium aluminium sulfate, and exciting agent is to adopt magnesium chloride or iron trichloride or sulfuric acid foundary weight, and whipping agent is to adopt hydrogen peroxide or sodium peroxide or Sodium Persulfate.

For strengthening the quality of concrete product, in flyash and cement, add a certain amount of wood powder or polypropylene fiber, the resistance to compression of concrete product, anti-folding, physical and chemical index such as shock-resistant all are greatly improved, the add-on of wood powder is the 8%-10% of flyash and cement weight, and the add-on of polypropylene fiber is 0.1% of flyash and a cement weight.

Stirrer of the present invention is made up of motor, stirring body, stir shaft, dispensing valve, air pump, gas separating net etc., in the bottom of stirring body gas separating net is installed, and links to each other with gas separating net by tracheae at the extra-organismal air pump of stirring.

Technical process of the present invention is simple, simple to operation, no special temperature, pressure requirement, enhance productivity, saved vapor cure, but save energy reduces production costs, avoided environmental pollution, the resistance to compression of the concrete product of producing with present method, anti-folding, physical and chemical index such as shock-resistant all are better than steam-cured similar index.

Accompanying drawing 1 is a process flow sheet of the present invention.

Accompanying drawing 2 is stirrer structural representations of the present invention.

The present invention is further illustrated below in conjunction with accompanying drawing.

As shown in Figure 1, the present invention is with flyash, and cement is sent into stirrer and mixed, and adds a certain amount of water, through 700 rev/mins of stirrer high-speed stirring, add exciting agent magnesium chloride, tensio-active agent Tai-Ace S 150, fully stir the back and add the whipping agent hydrogen peroxide, it is expanded to put into shaper after the stirring, cutting after 6-10 hour, depanning after 24 hours, natural Health preservation 7-10 days, the use of can dispatching from the factory.Tensio-active agent is to adopt Tai-Ace S 150 or potassium aluminium sulfate, and exciting agent is to adopt magnesium chloride or iron trichloride or sulfuric acid foundary weight, and whipping agent is to adopt hydrogen peroxide or sodium peroxide or Sodium Persulfate.

Embodiments of the invention 1: flyash 320kg, cement 400kg, polypropylene fiber 0.72kg sends into stirrer and mixes, add a certain amount of water,, add exciting agent magnesium chloride 0.4kg, tensio-active agent Tai-Ace S 150 17kg through 700 rev/mins of stirrer high-speed stirring, fully stir the back and add whipping agent hydrogen peroxide 20kg, it is expanded to put into shaper after the stirring, cutting after 6-10 hour, depanning after 24 hours, natural Health preservation 7-10 days, the use of can dispatching from the factory.

Embodiments of the invention 2: flyash 180kg, cement 360kg, wood powder 54kg sends into stirrer and mixes, add a certain amount of water,, add exciting agent magnesium chloride 0.5kg, tensio-active agent Tai-Ace S 150 1 7kg through 700 rev/mins of stirrer high-speed stirring, fully stir the back and add whipping agent hydrogen peroxide 25kg, it is expanded to put into shaper after the stirring, cutting after 6-10 hour, depanning after 24 hours, natural Health preservation 7-10 days, the use of can dispatching from the factory.

Embodiments of the invention 3: flyash 300kg, cement 300kg, wood powder 54kg, polypropylene fiber 0.6kg send into stirrer and mix, add a certain amount of water, through 700 rev/mins of stirrer high-speed stirring, add exciting agent magnesium chloride 0.5kg, tensio-active agent Tai-Ace S 150 15kg, fully stir the back and add whipping agent hydrogen peroxide 25kg, it is expanded to put into shaper after the stirring, cutting after 6-10 hour, depanning after 24 hours, natural Health preservation 7-10 days, the use of can dispatching from the factory.

Shown in the accompanying drawing 2, stirrer of the present invention is by motor 1, stirs body 2, stir shaft 3, paddle 4, dispensing valve 6, air pump 9, gas separating net 5, vehicle frame 7, tracheae 8, wheel 10 compositions such as grade are equipped with gas separating net 5 in the bottom of stirring body 2, and the air pump 9 outside stirring body 2 links to each other with gas separating net 5 by tracheae 8.Motor 1 drives stir shaft 3 by belt and do 700 rev/mins rotation in stirring body 2, make the compound thorough mixing, when stirring, air pump 9 passes through tracheae 8 to mixture pump gas, because becoming tiny bubble after by gas separating net 5, the effect of gas separating net 5, gas rest in the compound.

Claims

1, a kind of making method of self-cured light concrete, it is characterized in that flyash 43%-62%, cement 30%-52% are sent into stirrer to be mixed, add a certain amount of water, through 700 rev/mins of stirrer high-speed stirring, add exciting agent 0.05%-0.08%, tensio-active agent 2.25%-2.92%, fully stir the back and add whipping agent 2.7%-5%, it is expanded to put into shaper after the stirring, line of cut after 6-10 hour, depanning after 24 hours, natural Health preservation 7-10 days.

2, the making method of self-cured light concrete according to claim 1, it is characterized in that tensio-active agent is to adopt Tai-Ace S 150 or potassium aluminium sulfate, exciting agent is to adopt magnesium chloride or iron trichloride or sulfuric acid foundary weight, and whipping agent is to adopt hydrogen peroxide or sodium peroxide or Sodium Persulfate.

3, the making method of self-cured light concrete according to claim 1, it is characterized in that in flyash and cement, adding a certain amount of wood powder or polypropylene fiber, or polypropylene fiber and wood powder, the add-on of wood powder is the 8%-10% of flyash and cement weight, and the add-on of polypropylene fiber is 0.1% of flyash and a cement weight.

4, a kind of making equipment of self-cured light concrete, the stirrer by motor, stirring body, stir shaft, dispensing valve etc. are formed is characterized in that in the bottom of stirring body gas separating net being installed, and air pump links to each other with gas separating net by tracheae.