CN1171823C - High-effective concrete compound additive and its production method - Google Patents

Abstract

The present invention discloses a high-effective composite additive for concrete, which has the components and the weight compounding ratio of 10 to 50 wt% of triethanolmine, 20 to 50 wt% of sodium methylenebisnaphthalene sulsonate, 4 to 8 wt% of bone glue, 10 to 20 wt% of tartaric acid, 3 to 6 wt% of resin, 8 to 10 wt% of stearic acid and 105 to 210 wt% of water. The present invention has the advantages of low cost, little addition quantity, easy transportation and storage and convenience operation, and each index can reach or exceed first-grade standards via the detection of a highway engineering quality detection center of Chongqing City. The present invention can prevent the corrosion of pre-embedded metal and improve the plasticity and the workability of concrete, so bleeding and separation phenomena of the concrete are greatly reduced, and concrete placing is easier to be made uniform and compact. The present invention also has a buffering function to volume expansion generated from water converting to ice and obviously increases freeze-thaw prevention performance and waterproof performance, and meanwhile, certain chemical corrosion prevention capacity is also increased.

Description

High-effective concrete compound additive and production method thereof

Technical field:

The present invention relates to a kind of concrete admixture and production method thereof, especially a kind of high-effective concrete compound additive and production method thereof.

Background technology:

As everyone knows, some active princlple additive of blending in concrete, can effectively improve the quality and the performance of cement products, admixture as far back as eighties of last century the '30s U.S. widespread use bleed type in highway construction, to improve the intensity of flowability and the prefabricated road surface of coagulation in the concrete construction, people are by a large amount of scientific experimentations in recent years, concrete admixture is updated, and develop the different concrete admixture of performance, as hardening accelerator, water reducer, remover, frostproofer, anti-water resistance leaks agent, curing agent etc., there is following defective in available coagulation soil admixture: the one, and function singleness, comprehensive effectiveness is poor; The 2nd, consumption is big, how in some thousandths of, even have up to percentum, bring difficulty for the transportation storage, the mixing difficulty is big in construction simultaneously, inefficiency, the 3rd, cost is higher.

Summary of the invention:

The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of comprehensive effectiveness good, consumption is few, price is low, high-effective concrete compound additive easy to use and production method thereof, purpose of the present invention realizes by following technical proposals: the present invention is formulated by following component and weight ratio:

Trolamine 10-50 sodium metnylene bis-naphthalene sulfonate 20-50

Gelatine 4-8 tartrate 10-20

Rosin 3-6 stearic acid 8-10 water 105-210

Said stearic acid and tartrate can be substituted by sodium laurylsulfonate and sulfonated amino resin respectively.

Production method of the present invention is as follows:

Earlier with rosin, gelatine and water after dissolving under the 100-130 ℃ of condition, add stearic acid again, treat that stearic acid dissolves postcooling to 30-40 ℃, insert in the stirrer and stir, and add tartrate, sodium metnylene bis-naphthalene sulfonate, trolamine and stir and got final product in 4 hours.

The using method of product of the present invention is 3/10000ths to five amounts of getting by cement consumption, gets final product joining in the ready-mixed concrete behind its dilute with water earlier again.

The invention belongs to bleed type concrete admixture, it is mainly by means of chemical surfactant, reduce the surface tension of the aqueous solution, make an amount of micro bubble introduce inside concrete, improve the workability of concrete mixing, naphthalene water reducer makes mixes the system concrete increase slump, guarantee when identical water consumption, can improve workability, improve concrete pumping, being convenient to high-rise construction transports, or when identical workability, reduce water consumption, reduce segregation, reduce bleeding quantity, improve homogeneity, the absorption of its formed complex compound and film and cement molecule (particle) and dissemination are strengthened simultaneously, cause the hydration process of cement to change, making cement reach the middle and later periods hydration rate in early days slows down, changed cement stone pore pore size distribution, the aperture is diminished, concrete density increases, improve early age strength of concrete, shorten maintenance time, the trolamine among the present invention is a kind of chemical substance soluble in water, and it can comparatively fast produce complex compound in concrete, and generate solvable district point at cement surface rapidly, other chemical substance dissolution rate is improved, accelerate with cement in the reaction of relevant composition, before grout hardens, finish volumetric expansion basically, raising, particularly early strength to harden back concrete compactness and ultimate compression strength improve obviously.Unresolvable tartaric acid of the present invention is a kind of retardant, stirs the long needs of back concrete haulage time to satisfy in particular surroundings or special engineering, and it is bleed that rosiny mainly acts on, so that concrete workability and degree of compactness improve.Rosin also has antifreeze impervious effect in addition.The objective of the invention is as can be known to realize from above-mentioned situation.The present invention is through having obtained the favorable comment of exploiting entity and relevant departments in the use aspect railway, bridge, tunnel, highway and the concrete for building.

From reality was used, unit in charge of construction generally reflected, uses cost of the present invention low, and volume is few, was easy to transportation and keeping, and constructing operation is convenient.And detect every index through Chongqing City's highway engineering quality inspection center and meet or exceed the acceptable end product standard, see Table 1.

Table 1 high-effective concrete compound additive performance test results

Sequence number	Test item			Technical indicator	Detected result		Conclusion
								1	Water-reducing rate %			≥8	8.3		Acceptable end product
2	Compressive strength rate %
									3d			≥130	133		Acceptable end product
	7d			≥115	116		Acceptable end product
									28d			≥105	109		Acceptable end product
The difference min of time of coagulation		Initial set	-90～+120			-24	Qualified
								Final set	-30

Annotate: the high-effective concrete compound additive volume is 0.05%

Check conclusion: the index of examining meets the technical requirements of GB8076-1997 acceptable end product,

From actual service condition, product of the present invention has following function to concrete:

(1) improves workability;

(2) reduce segregation, reduce bleeding quantity, improve homogeneity;

(3) reduce or avoid the aggregate sedimentation;

(4) regulate (shorten or delay) just, final setting time, solve high temperature concrete manufacture difficulty;

(5) improve pumping, be easy to the high-rise construction of concrete making and transport;

(6) delay or reduce hydration heat;

(7) improve early stage or later strength;

(8) compensate for shrinkage or microdilatancy;

(9) reduce drying shrinkage and creep;

(10) bonding force of raising concrete and reinforcing bar;

(11) action of rust of prevention built-in metal; Improve concrete plasticity workability, bleeding and segregation phenomenon are reduced greatly.Concrete placing more is easy to do to and spares matter and densification.Also water is changed into the volumetric expansion of icing generation and play shock absorption, significantly improve freeze-thaw resistance and watertightness, also increase the ability of certain chemical resistance of concrete simultaneously.

Embodiment:

Embodiment 1, is equipped with material by following component and weight part:

Trolamine 50 methyl sodium dinaphthalenesulfonates 20

Gelatine 4 tartrate 10 rosin 4

Stearic acid 10 water 120

Production method is as follows:

Earlier with rosin, gelatine and water 100 ℃ dissolve after, add stearic acid again, treat that stearic acid dissolves postcooling to 40 ℃, insert in the stirrer and stir, and add tartrate, sodium metnylene bis-naphthalene sulfonate, trolamine stirs and got final product in 4 hours.

Embodiment 2, are equipped with material by following component and weight part:

Trolamine 40 sodium metnylene bis-naphthalene sulfonates 30

Gelatine 4 tartrate 15 rosin 3

Stearic acid 8 water 105

Production method is as follows:

Earlier rosin, gelatine and water are dissolved under 110 ℃ of steam-heated cal(l)andria conditions, add stearic acid again, treat that stearic acid dissolves postcooling to 30 ℃, insert in the stirrer and stir, and add tartrate, sodium metnylene bis-naphthalene sulfonate, trolamine stirs and got final product in 4 hours.

Embodiment 3, are equipped with material by following component and weight part:

Trolamine 45 methyl sodium dinaphthalenesulfonates 20

Gelatine 5 tartrate 20 rosin 6

Stearic acid 9 water 165

Production method is as follows:

Earlier rosin, gelatine and water are dissolved under 130 ℃ of steam-heated cal(l)andria conditions, add stearic acid again, treat that stearic acid dissolves postcooling to 35 ℃, insert in the stirrer and stir, and add tartrate, sodium metnylene bis-naphthalene sulfonate, trolamine stirs and got final product in 4 hours.

Embodiment 4, are equipped with material by following component and weight part:

Trolamine 10 methyl sodium dinaphthalenesulfonates 50

Gelatine 8 Sodium dodecylbenzene sulfonatees 10

Rosin 5 sulfonated amino resins 20 water 195

Production method is as follows:

Earlier with rosin, gelatine and water 100 ℃ dissolve after, add sulfonated amino resin again, cool off 40 ℃, insert in the stirrer and stir, and add Sodium dodecylbenzene sulfonate, sodium metnylene bis-naphthalene sulfonate, the trolamine stirring got final product in 4 hours.

Embodiment 5, are equipped with material by following component and weight part:

Trolamine 20 methyl sodium dinaphthalenesulfonates 45

Gelatine 4 Sodium dodecylbenzene sulfonatees 15

Rosin 6 sulfonated amino resins 15 water 150

Production method is as follows:

Earlier with rosin, gelatine and water 100 ℃ dissolve after, add sulfonated amino resin again, be cooled to 30 ℃, insert in the stirrer and stir, and add Sodium dodecylbenzene sulfonate, sodium metnylene bis-naphthalene sulfonate, trolamine stirs and got final product in 4 hours.

Claims (3)

1, a kind of high-effective concrete compound additive, formulated by following component and weight ratio:

Trolamine 10-50 sodium metnylene bis-naphthalene sulfonate 20-50

Gelatine 4-8 tartrate 10-20

Rosin 3-6 stearic acid 8-10

Water 105-210

2, according to the said high-effective concrete compound additive of claim 1, it is characterized in that: said stearic acid and tartrate are substituted by sodium laurylsulfonate and sulfonated amino resin respectively.

3, the production method of the said a kind of high-effective concrete compound additive of claim 1 follows these steps to carry out:

Earlier with rosin, gelatine and water after dissolving under the 100-130 ℃ of condition, add stearic acid again, treat that stearic acid dissolves postcooling to 30-40 ℃, insert in the stirrer and stir, and add tartrate, sodium metnylene bis-naphthalene sulfonate, trolamine and stir and got final product in 4 hours.