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当前位置：防水材料招商 > 福建防水材料招商 > 厦门希乐防水科技有限公司 > 新闻列表 > 厦门希乐防水科技有限公司资讯正文

Xile(DPS)ABC

编辑：希乐防水科技发布时间：2010/8/30浏览次数：3995

Xile Deep Penetrating Sealer (DPS) ABC

1 Introduction

Xile inorganic water based penetration waterproofing agent (hereinafter referred to as Xile Deep penetration Sealer ( DPS), is based on buildingbridge waterproofing requirements, combining the actual situation of Chinas resources, developed a consistent national building materials industry standard JC/T1018-2006 waterproof material. It is non-toxic, tastelessenvironment-friendly with high permeability, sprayed directly on the cement mortar, concrete structure surface, can rapidly penetrate the internalcement mixture, the alkali material reaction, coupling generates insoluble in water, gels, within the plugged pores, closed pores channels, increase density to form a permanentreliable waterproofingconcrete structuresimprove the mechanical strength, it has mold, anti-erosion, anti-acid erosion features. Performance equivalent to American, water repellent products. According to information on DPS products in American, Japan, Southeast Asia, besides widely use in construction external waterproofing, also in the runway , airport, highways, bridges, water pipelinesother concrete projects, more generally used for reinforcement, maintenance, sealing, corrosion, resistance to wind erosion, the effect is significant.

Deep penetration Sealer ( DPS )is introduced China since the 90s, has succeeded in Zhejiang, Jiangsu, Fujian, Beijing, Shanghai, SichuanChongqing provincescities on roadsbridges, construction house (ground, wall) surface, the basement, water tower, pool , plantworkshop using the cumulative number of 10 million square meters building area, made more significant economicsocial benefits.

Xiamen Xile Waterproof Technology Co., Ltd. has a more systematic discussion about the use of Deep penetration Sealer ( DPS )functionalitydurability, to facilitate the expansion application, now part of the contents are summarized below.

2 Basic properties

2.1Catalyst,

Xile ( DPS )is activated by inorganic silica carrier, catalyst, additives pose a variety of functional groups. Catalyst is to determine the product quality, We develop the Xile DPS has a strong catalyst for catalysis, coupling effects, Waterproofing agent can penetrate quickly the cement mortar, concreteform a waterproof seal silicate gel, After the test (see Table 1)the major technical indicators have reachclose to the levels of catalyst productswaterproofing agent of American.

Table 1 Performance Comparison of catalyst between Xile ( DPS )and American

Performance parameters

Xile DPS

American

Density (23 ± 1 ℃)

Effective matter content (%)

Viscosity (23 ± 1 ℃, S)

Surface tension (mN / m)

Gel time (min)

（23±1℃，RH70=10）

1.0314

24.7

13.6

24.114

Final setting 386

1.0982

24.5

11.20

24.970

Final setting 350

Note: (1) Both catalyst PH are 7; (2) both the appearance of transparent liquid are yellow, no irritating odor; (3) storage stability are: 10 cycles of qualified, quality store airtight at room temperature constant; (4) catalytic properties are: hardening slurry wellfind more hydrated crystals.

2.2 The product performance

the main properties of Xile DPS meets the standard of JC/T1018-2006, DBJ01-54-2000

. To further understand the quality of the product case, Conducted a comparative test with American waterproofing agents, see the results in Table 2.

Table 2 Performance parameters of the Xile DPS compares with American

Performance parameters

Xile DPS

American

Viscosity (23 ± 1 ℃, S)

Density (23 ± 1 ℃)

Surface tension (mN / m)

Gel time (min)

（23±1℃，RH70=10）

10.40

1.09

24.381

Final setting 386

10.44

1.085

25.675

Final setting 350

Note: (1) Both PH value are 12; (2) the appearance of both are colorlesstransparent, odorless, nonflammable, non-toxic water-based solution; (3) permeability are: 24h penetration depth greater than 10mm , 7d penetration depth greater than 30mm; (4) storage stability are: 10 cycles of qualified, quality store airtight at room temperature constant.

Form Table 2 test results: the surface tension of liquid, appearance, density, PH, permeability, storage stabilityother properties of both are nearly the same; gel time also are similar.

3 Features

3.1Penetration function

Xile DPS has a strong penetration function, mainly due to the introduction of various active catalyst additives penetrant composition. After the application of verification proving that a variety use of new additive auxiliarycatalyst can be formulated a low surface tension, good permeabilitystorage stability of waterproofing products.

3.1.1 Concrete foundfation test

the penetration of Xile DPS in cement mortar, concrete structures is along the capillary channelenter the internal connected micro-cracks. To further understand the relationship between the penetration function of waterproofingthe density of structures , Comparison test conducted impermeability by brushing Xile DPS samplesuncoated blank basis samples.

Impermeability comparative test by GBJ 82-85 " Concrete impermeability test methods ", At first on the uncoated blank specimen take a impermeability test until the seepage to measure impermeability pressure, After unloading mode , specimen face is brushed 3 times with Xile DPS, re-install conservation model for impermeability test after 3d curing to determine impermeability pressure, Comparison of calculated percentage of impermeability pressure,

The results shown in Table 3

Table 3.Comparative impermeability of Xile DPS

Specimen number

seepage pressure (MPa)

anti-Chung pressure increase (%)

Blank reference specimen

brushed Xile DPS specimen

0.4

0.5

0.6

0.7

1.0

1.3

0.8

0.9

1.2

1.3

1.6

100

Impermeability of the Table 3 Comparison of experimental results can be seen after brushing Xile DPS, the impermeability of concrete specimen pressure increased significantly, whereas the rate of increasethe impermeability of the reference specimen. No. 1-4 impermeability pressure low (1MPa below) benchmark test specimen, increased the magnitude of the ratio of 71% to 100%; No. 5-6 impermeability pressure above the benchmark in 1MPa specimens, although the impermeability pressure increased to 1.3 ~ 1.6MPa, but the value increased only by the degree of 23% to 30%. This shows that the use of Xile DPS is more effective where structures is in the worse dense foundation level.

, 3.1.2 Construction impact

In Xile DPS penetration process, the active component is under the action of carrierthe water, due to the low surface tension, while the penetration of the internal structures, so before the construction the basal plane should be fully wetted,to keep wet after construction.

3.2 Sealcompacting function

Xile DPS penetrated form the surface the internal structure of cement mortar concrete

Immediately with the cement hydration process produced Ca (OH) 2 reaction of water-insolublehas a certain strength of the silica gel crystals, precipitation of other alkali substances,

forming a permanent seal with the structures blend waterproofing.

3.2. Close solid feature

Xile DPS is penetrated by the surface structure of cement mortar concrete internally, immediately with the cement hydration process produced Ca (OH) 2 reaction, Generation does not dissolve in waterhas a certain strength of the silica gel crystals, precipitation of other alkali material to form a permanent seal waterproofing with the structures.

3.2.1Gel reaction

Cement mortar, concrete structures by water soaking wet, the internal Ca (OH) 2 is gradually precipitated, the precipitation amount is growing with the time moisture increasing, which provide the the gel reaction conditions for waterproofing. condensation performance in the gel time was found during testing, with the Ca (OH) 2 concentration increases, the time of waterproofing gel initial setting is corresponding shorten, which can show that to master control of Ca (OH) 2 concentration on the improvement to improve sealing function is very important. In construction applications, has taken to extend the base surface moisture soaking timethe old concrete (mortar) 0.3mm these cracks appear, the use of saturated Ca (OH) 2 solution as pretreatment tests have achieved noticeable results.

3.2.2 new silicone gel crystalsprecipitate

To further learn more the effect of the waterproofing agent of Xile DPS in the mixture of cement hydration process on the mineral composition of cement, No. 425 #dinary portland cement use made of the standard grinding,, the grinding is observed cement facies under the polarizing microscope, and with uncoated cement grinding contrast. It is observed that specimen brushing Xile DPS, a large number of gels within the gap is filled, it is clear to see more of the silica gel crystals, the internalganization of dense, blank basis samples uncoated on the test is relatively large interconnected pores, silica gel crystals rare inside. Thus, Xile DPS can accelerate cement hardening, resulting in gel, cement block inside gap, to improveenhance the sealing cement structure, permeability, water resistance.

Cement facies described indicate in Figure 1.

3.2.2 new silicone gel crystals precipitate

To learn more about Xile DPS waterproofing agent in the hydration process of cement mixing material on the mineral composition of cement, use is made of 425 #dinary portland cement standard grinding, the grinding on the polarizing microscope cement facies observed,with the uncoated cement grinding contrast. Observed : brushing Xile DPS on grinding, a large number of gels within is filled, it is clear to see more of the silica gel crystals, the internal compactganization,uncoated blank test grinding within the relatively large interconnected pores, silica gel crystals rare. Thus, Xile DPS can accelerate cement hardening, gel formation, cement block inside gap, to improveenhance the sealing cement structure, permeability, water resistance. Lithofacies depicted in Figure 1.

（a） (b)

Figure 1 coateduncoated Xile DPS cement facies (× 450 single-polarized light)

(A) uncoated Xile DPS (b) coated Xile DPS

Xile DPS forms the new silicon gel crystal while penetrating Internal structures, with the moisture conservation, ground surface will separate out a white precipitate. This means that the waterproofing penetrated deeper base plane, perfect gel reaction,harmful potassium, sodium oxide has been precipitated.

3.3 Reinforcing function

Cement mortar, concrete structures treated after brushing Xile DPS,, produces a new gelsilicate, to form a seal layer to promote cement hydrationfurther improved to increase strength. Therefore, the application of Xile DPS in restoration for old concrete structures always has a reinforcing function.

Reinforced by the Xile DPS after repair , the concrete strength meets the design requirements,achieved satisfactory results.

4 Durability

The most concern question of Xile DPS is durability, CO 2 in atmosphericthe erosion of harmful media of surrounding environment affect the durability is the main erosion factors, for which firstforemost to enhance the durability of concrete to ensure that concrete on the density, pressure resistance, impermeability, resistance to wind erosion so as to achieve carbonationcorrosion. the Xile DPS chemical mechanism and the composition of materials to meet the water-based inorganic coating waterproofing agent in the concrete surface is a necessary condition to ensure durability.

4.1 The anti-wind erosion carbonation

Anti-wind erosion carbonation performance testing in the laboratory, at first production 2 groups, line of 100mm × 100mm × 100mm concrete sample, put the concentration of 95% of CO 2 the test carbon box, concrete specimen coated Xile DPSblank concrete specimens are sealed in the test box 10d for accelerating the carbonation test. Then remove the broken it, measured depth of carbonation, described in Figure 2, Figure 3.

Figure 2 State of blank piece of Figure 3 .State of the piece coated

carbon benchmark test Xile DPS carbon benchmark test

The results show that the carbonation depth of largest gaps in specimen is up to 3cm, an average of 2cm; brushing Xile DPS specimen, the maximum carbonation depth is 1.5cm, an average of 1cm, Anti-wind carbonization performance significantly improved.

4.2 Anti-corrosion

Xile DPS has some corrosion resistance. Both blank concrete specimens treated Xile DPS three timesuntreated specimens are at strong acidic medium solution (PH value <1), soaked for 6 months, take out to test their physicalmechanical properties, to found that the bendingthe compressive strength of soaking handle specimen is better than the untreated samples after soaking, the results shown in Table 4, because one other Xile DPS increases density of the surface concrete (mortar) treated , closed the channel of micro-gaps intruded by media; the other alkaline silicate material itself is anti-corrosive. However, the view of anti-corrosion mechanism, the experimental resultspracticability, it is more sui for the corrosion of acid gas medium,PH value of 4 more (below the middle grade corrosion of the blank concrete) the corrosion for acidic action of parts under the corrosive water.

Table 4 Strength of the treated compared with untreated samples increased rate%

Medium

2% HCL

5% HCL

2% HNO 3

5% HNO 3

Bending to improve

Compressive strength increased

6.6~14.3

28.7~69.2

32.6~39.1

4.8~40

20.1~30.5

9.5~13.4

14.6~23.9

14.4~23.5

5 Conclusion

Xile DPS is a green environmental protection, structural reinforcement, self-repair, multi-performance, simple to apply the unique properties of waterproofing materials, have been widely used in various types of concrete structures, waterproofing, corrosion protection, good effect, significant socialeconomic benefits.

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