CN104788045A

CN104788045A - Grouting material

Info

Publication number: CN104788045A
Application number: CN201410021926.9A
Authority: CN
Inventors: 王昶
Original assignee: Upper Seamark Bodyguard New Building Materials Factory
Current assignee: Upper Seamark Bodyguard New Building Materials Factory
Priority date: 2014-01-18
Filing date: 2014-01-18
Publication date: 2015-07-22

Abstract

The invention discloses a grouting material which is mainly composed of the following ingredients, by weight, 40.0-40.7% of cement, 3-5% of silicon powder, 1-2% of a water reducer, 0.5-1.5% of an expanding agent, 0.3-0.5% of tartrate, 14-16% of heavy calcium, 0.5-1.5% of bentonite, 35.0-36.5% of an aggregate, 0.4-0.6% of cellulose ether and 0.4-0.6% of an early strength agent. Without the need of considering the temperature factor, the grouting material is easy for construction and is not easy to crack or shrink. Strength can be greatly enhanced. In addition, the grouting material is low-cost and can completely replace a previously-used epoxy resin material. The grouting material is easy for popularization and application.

Description

A kind of grouting material

Technical field

The present invention relates to a kind of material of construction, particularly relate to a kind of grouting material.

Background technology

Grouting material is mainly used in: the back-grouting of the reinforcing of fixing, the road and bridge engineering of the repairing of foot bolt fastening, airstrip, nuclear power generating equipment, machinery bed, steel construction and ground Huai Kou, Equipment Foundations, plant bury reinforcing bar, concrete structure reinforcement and transformation, old concrete structure crack administer, mechanical and electric equipment installation, track and Steel Structure Installation, the stake of silent piling engineering envelope, building reinforce, the thickening of beam cross-section increasing, wall body structure and the reparation of leakage infiltration, subside grouting and the various salvagings etc. of various foundation works.

Grouting material is using high-strength material as aggregate, using cement as bonding agent, is aided with the materials such as upper flow regime, microdilatancy, anti-segregation formulated.It adds a certain amount of water of people at the construction field (site), can use after stirring.It is good that grouting material has self drainage, fast hard, early strong, high-strength, ungauged regions, microdilatancy; Nontoxic, harmless, not aging, to water quality and surrounding environment pollution-free, from features such as close property are good, antirust.There is reliable in quality at construction party mask, reduce costs, reduction of erection time and the advantage such as easy to use.Fundamentally changing plant bottom case stressing conditions, make it the whole load bearing equipment equably, thus meet various machinery, the installation requirement of electrical equipment (heavy equipment high-precision grinder), is the desirable injection material without the pad installation epoch.But existing grouting material cost is higher, also there is easy to crack, contraction, the problems such as insufficient strength.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of grouting material, is easy to construction, and not easy to crack and contraction, greatly can improve intensity, and cost is lower, is easy to apply.

The present invention solves the problems of the technologies described above the technical scheme adopted to be to provide a kind of grouting material, forms: cement, silica flour, water reducer, swelling agent, tartrate, coarse whiting, wilkinite, aggregate, ether of cellulose and hardening accelerator primarily of following component.

Above-mentioned grouting material, wherein, the weight percentage of described each component is:

Cement 40.0% ~ 40.7%;

Silica flour 3% ~ 5%;

Water reducer 1% ~ 2%;

Swelling agent 0.5% ~ 1.5%;

Tartrate 0.3% ~ 0.5%;

Coarse whiting 14% ~ 16%;

Wilkinite 0.5% ~ 1.5%;

Aggregate 35.0% ~ 36.5%;

Ether of cellulose 0.4% ~ 0.6%;

Hardening accelerator 0.4% ~ 0.6%.

Cement 40.3%;

Silica flour 4%;

Water reducer 1.5%;

Swelling agent 1%;

Tartrate 0.4%;

Coarse whiting 15%;

Wilkinite 1%;

Aggregate 35.8%;

Ether of cellulose 0.5%;

Hardening accelerator 0.5%.

Above-mentioned grouting material, wherein, described cement is silicate cement.

Above-mentioned grouting material, wherein, the water-reducing rate of described water reducer is not less than 14%.

Above-mentioned grouting material, wherein, described water reducer is naphthalenesulfonate water reducer, melamine based water reducer or poly carboxylic acid series water reducer.

Above-mentioned grouting material, wherein, described aggregate is the sand that particle is less than 475mm.

Above-mentioned grouting material, wherein, described ether of cellulose is methyl cellulose ether or cellulose ether.

The present invention contrasts prior art following beneficial effect: grouting material provided by the invention, formed by adding cement, silica flour, water reducer, swelling agent, tartrate, coarse whiting, wilkinite, aggregate, ether of cellulose and hardening accelerator, do not need to consider temperature factor, be easy to construction, not easy to crack and shrink, greatly can improve intensity, and cost is lower, the epoxide resin material used in the past can be replaced completely, be easy to apply.

Embodiment

Below in conjunction with specific embodiment, the invention will be further described.

Determinative mainly component and the proportioning of the intensity of grouting material, water cement ratio, aggregate, admixture, the maintenance etc. in degree of compactness and later stage.Grouting material provided by the invention, described grouting material is made up of following component: cement, silica flour, water reducer, swelling agent, tartrate, coarse whiting, wilkinite, aggregate, ether of cellulose and hardening accelerator, by rational component and mix-design, make the intensity of grouting material higher, cost is lower, can replace the epoxide resin material used in the past completely.

Grouting material provided by the invention, selection and the function of each main ingredient are as follows: cement should adopt silicate cement.Silica flour, water reducer, swelling agent etc. are gained in strength as concrete admixture; The preferred water-reducing rate of described water reducer is not less than the high efficiency water reducing agent (also known as superplasticizer) of 14%, as naphthalenesulfonate water reducer, melamine based water reducer or poly carboxylic acid series water reducer.Wilkinite (Bentonite) is the moisture clay pit based on montmorillonite, has bloating tendency, cohesiveness, adsorptivity, catalytic, thixotropy, suspension and cationic exchange preferably.Aggregate selects particle to be less than the sand of 475mm.Coarse whiting is exactly calcite in powder, is the abbreviation of water-ground limestone, is as calcite, marble, Wingdale grind and form by natural carbonate mineral.Be conventional powdery inorganic filler, have that chemical purity is high, inertia greatly, not easily chemical reaction, Heat stability is good, can not decompose below 400 DEG C, the advantage such as whiteness is high, oil absorbency is low, refractive index is low, matter is soft, dry, little, nontoxic, tasteless containing crystal water, the low wear(ing)value of hardness, odorless, good dispersity.Hardening accelerator is also one of concrete admixture, and concrete early strength agent refers to and can improve early age strength of concrete, and to the admixture that later strength does not make significant difference.Ether of cellulose is the macromolecular compound with ether structure be made up of Mierocrystalline cellulose, can water-soluble, dilute alkaline soln and organic solvent, and has thermoplasticity; There are methylcellulose gum, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, Natvosol, Vltra tears, cyanoethyl cellulose, α-tolunitrile ethyl cellulose, carboxymethyl hydroxyethyl cellulose and benzyl cellulose etc. with the difference of etherifying agent used, preferably use methyl cellulose ether or cellulose ether.The Main Function of hardening accelerator is to accelerate hydrated cementitious speed, promotes the development of early strength on coagulation.

Embodiment 1: add silicate cement 40.0kg successively; Silica flour 3kg; Water reducer 1kg; Swelling agent 0.5kg; Tartrate 0.3kg; Coarse whiting 16kg; Wilkinite 1.5kg; The sub-aggregate 36.5kg of fine sand; Ether of cellulose 0.6kg; Hardening accelerator 0.6kg, namely can be made into 100kg grouting material after mixing stirring.

Embodiment 2: add silicate cement 40.7kg successively; Silica flour 5kg; Water reducer 2kg; Swelling agent 1.5kg; Tartrate 0.5kg; Coarse whiting 14kg; Wilkinite 0.5kg; The sub-aggregate 35.0kg of fine sand; Ether of cellulose 0.4kg; Hardening accelerator 0.4kg, namely can be made into 100kg grouting material after mixing stirring.

Embodiment 3: add silicate cement 40.3kg successively; Silica flour 4kg; Water reducer 1.5kg; Swelling agent 1kg; Tartrate 0.4kg; Coarse whiting 15kg; Wilkinite 1kg; The sub-aggregate 35.8kg of fine sand; Ether of cellulose 0.5kg; Hardening accelerator 0.5kg, namely can be made into 100kg grouting material after mixing stirring.

Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little amendment and perfect, therefore protection scope of the present invention is when being as the criterion of defining with claims.

Claims

1. a grouting material, is characterized in that, described grouting material forms primarily of following component: cement, silica flour, water reducer, swelling agent, tartrate, coarse whiting, wilkinite, aggregate, ether of cellulose and hardening accelerator.

2. grouting material as claimed in claim 1, it is characterized in that, the weight percentage of described each component is:

Cement 40.0% ~ 40.7%;

Silica flour 3% ~ 5%;

Water reducer 1% ~ 2%;

Swelling agent 0.5% ~ 1.5%;

Tartrate 0.3% ~ 0.5%;

Coarse whiting 14% ~ 16%;

Wilkinite 0.5% ~ 1.5%;

Aggregate 35.0% ~ 36.5%;

Ether of cellulose 0.4% ~ 0.6%;

Hardening accelerator 0.4% ~ 0.6%.

3. grouting material as claimed in claim 2, it is characterized in that, the weight percentage of described each component is:

Cement 40.3%;

Silica flour 4%;

Water reducer 1.5%;

Swelling agent 1%;

Tartrate 0.4%;

Coarse whiting 15%;

Wilkinite 1%;

Aggregate 35.8%;

Ether of cellulose 0.5%;

Hardening accelerator 0.5%.

4. grouting material as claimed in claim 1, it is characterized in that, described cement is silicate cement.

5. grouting material as claimed in claim 1, it is characterized in that, the water-reducing rate of described water reducer is not less than 14%.

6. grouting material as claimed in claim 5, it is characterized in that, described water reducer is naphthalenesulfonate water reducer, melamine based water reducer or poly carboxylic acid series water reducer.

7. grouting material as claimed in claim 1, it is characterized in that, described aggregate is the sand that particle is less than 475mm.

8. grouting material as claimed in claim 1, it is characterized in that, described ether of cellulose is methyl cellulose ether or cellulose ether.