產(chǎn)品品牌:海韻牌
產(chǎn)品型號:BT-3003
供貨地:華中地區(qū)
產(chǎn)地:長沙
海韻牌BT-3003型混凝土防裂防水劑Chaton brand BT - 3003 type concrete crack-proof water-proofing agent 執(zhí)行標準:JC474-2003Execution standard: JC474-2003海韻牌BT-3003型混凝土防裂防水劑在BT-3001的基礎(chǔ)上增加了經(jīng)特殊生產(chǎn)工藝和表面處理技術(shù)的工程纖維,可有效提高纖維與基料的握裹力,應(yīng)用于砂漿/混凝土中,可阻止、減少和延緩早期塑性開裂,極大提高砂漿/混凝土的韌性、抗凍性、抗疲勞性、抗沖擊性、抗?jié)B防水等綜合性能?! haton brand BT - 3003 type concrete crack-proof water-proofing agent on BT - based on increased 3001 through special production craft and surface treatment technology project fiber, can effectively improve the fiber with makings grip wrapped force, used in the mortar/in concrete, can prevent and reduce and delay the early-age plastic craze, which improves the mortar/concrete toughness, frost resistance and fatigue resistance, impact resistance, anti the waterproof etc comprehensive performance.一、用途及特點A, use and features1、能降低砂漿、混凝土在靜水壓力下的透水性的外加劑。用于工業(yè)與民用建筑的屋面、地下室、隧道、巷道、給排水池、水泵站等有防水抗?jié)B要求的混凝土工程。1, can reduce mortar and concrete in static water pressure of hydraulic permeability of admixture. Used for industrial and civil architecture roofing, basement, tunnel, tunnels, water supply and drainage pool, water pumping station, etc have waterproof impermeable concrete engineering requirements.2、能提高混凝土密實性和抗裂防滲性能,抗?jié)B等級可達P25,具有補償混凝土收縮和節(jié)約水泥等效果,用于屋面防水、地下防水、廁浴間、混凝土補強、混凝土后澆縫等。作結(jié)構(gòu)自防水,省去外防水作業(yè),延長伸縮間距,連續(xù)澆筑60m不留伸縮縫,縮短工期,防水造價僅為二氈三油價格的1/3,摻入該劑對混凝土強度不降低,對水質(zhì)無污染,對鋼筋無銹蝕作用。2, can improve the consistency of concrete and percolating-proof properties, anti-permeability level can be amounted to do, has compensation shrinkage of concrete and cement effects such as saving, used in roof waterproof, underground waterproof, lavatory bath room, concrete reinforcing, concrete pouring seam, etc. Structural and save from waterproof outside waterproof homework, extend telescopic spacing, continuous RCC 60m leave mageba, shorten the construction period, waterproof cost is only two felt three oil prices 1/3, incorporating the agent on the strength of concrete, not decrease of water pollution, no corrosion of reinforcement effect.3、防水劑與引氣劑組成的復合防水劑中由于引氣劑能引入大量的微細氣泡,隔斷毛細管通道,減少泌水,減少沉降,減少混凝土的滲水通路,從而提高了混凝土的防水性。防水劑與減水劑組成的復合防水劑中由于減水劑的減水作用和改善和易性使混凝土更致密,從而能達到更好的防水效果。3, water-proofing agent and air-entraining agent composed of composite waterproof agent due to air-entraining agent can introduced large quantities of fine bubbles, partition capillary channel, reduce secrete water, decrease subsidence, reduce concrete seepage pathways, thereby improving the concrete water proofing property. Water-proofing agent and jianshuiji composed of composite waterproof agent due to the decrease water reducing agent role and improve the workability make concrete denser, thus can achieve better waterproof effect.二、執(zhí)行標準:JC474-1999Second, executive standard: JC474-1999三、用量與用法Three, dosage and usage1、摻量1, the admixture of
型號 | 普通型 | 早強型 |
代號 | 3003 | 3004 |
摻量,C×%(內(nèi)摻法) | 3-5 | 3-5 |
適用范圍 | 用于0℃以上環(huán)境中施工的防水混凝土或防水砂漿工程,用于泵送混凝土。 | 用于常溫、低溫、負溫(最低氣溫不低于-5℃)環(huán)境中施工的有早強要求的防水混凝土或防水砂漿工程,用于泵送混凝土。 |
2、防水劑混凝土宜采用5~25mm連續(xù)級配石子,攪拌時間應(yīng)較普通混凝土延長30s,本劑與水泥、水、骨料同時摻入攪拌,攪拌時間≥3min。防水劑混凝土應(yīng)加強早期養(yǎng)護,在潮濕狀態(tài)下養(yǎng)護7d以上。在日最低氣溫≤5℃時,應(yīng)采取保溫措施。2, water-proofing agent concrete appropriate USES5~25mm to continuous graded gravel, whisking time should extend than those of normal concrete 30s, the agent and cement, water, stir, stir while incorporating aggregate time ≥3min. Water-proofing agent concrete should strengthen early maintenance, in damp condition maintenance 7d above. In day more than 5℃ minimum temperature when, should adopt insulation measures.四、貯運及包裝:Four, shipping and packing:編織袋50㎏/袋,貯存期:2年。Woven 50 ㎏ / bag, storage period: 2 years.可使混凝土抗?jié)B標號達到 S40 以上,同時具有補償收縮的功能,可提高混凝土的抗裂性,并具有較高的減水性,能大幅度提高混凝土強度和節(jié)約水泥,是目前防滲性最佳的剛性防水材料。Can make concrete anti-permeability label to S40 above, also having shrinkage compensation function, can improve concrete anti-cracking and has high reduce water, can dramatically improve the strength of concrete and cement, is the present impervious to save the best rigid waterproofing material sex.五、防水機理:Five, the waterproof mechanism:1 、 BT-3003型抗裂防水劑是一種復合型防水劑,通過膨脹組份,防止干縮開裂。提高砼抗?jié)B能力。1, BT-3003 type crack water-proofing agent is a kind of compound waterproof agent, through the expansion, m.p., prevent drying shrinkage crack. Improve concrete impermeable abilities.2 、通過減少混凝土拌合用水量,提高砼強度,增加砼密實性。2, by reducing the amount of water consumption, improve the concrete regarding mix-proportion concrete strength, increase concrete course aggregates.3 、通過引入微量封閉小氣泡,堵塞混凝土毛細水管通道,達到防滲目的。3, through the introduction of trace closed little bubble, jams concrete capillary conduit channel, reach the anti-seepage purpose.4 、通過有機材料與混凝土結(jié)合成致密的氧化膜,達到抗?jié)B防水效果。4, through the organic materials and concrete combine into a dense oxidation film, achieve anti-permeability waterproof effect.六、主要技術(shù)性能與指標:Six, main technical performances and index:它除了具有防裂抗?jié)B功能外,還有緩凝、降低水化熱峰值的效果,是春夏氣溫較高時混凝澆筑以及運距較長的商品砼、泵送砼施工的理想防水劑?! t besides having crack-proof anti-permeability function outside, still have a slow coagulation, reduce the effect of the hydration heat peak is chun xia air temperature is higher, when casting and the distance of coagu-flocculation longer commercial concrete, pumping concrete construction ideal water-proofing agent.七、適用范圍:Seven, the applicable scope:1 、可用于蓄水池、貯藏、水電站、大壩、筒倉等有抗?jié)B要求且有一定靜水壓力的工程。1, can be used for storage, storage, hydropower station, DAMS, silos, etc have anti-permeability requirements and have certain hydrostatic pressure of the project.2 、適用于地下建筑、屋面工程、房屋首層地面等,可免做防水層。2 and applicable for underground structures, roofing construction, building the first floors, etc., can avoid doing waterproof layer.3 、適用于公路、鐵路隧道以及城市地鐵的防水工程。3, suitable for highway, railway tunnels and the urban subway waterproof project.八、使用方法及注意事項:Eight, the use method and the matters needing attention:1 、本系列防水劑為粉液狀,可直接與水泥、砂、石子等一起加入拌合,攪拌時間應(yīng)比常規(guī)攪拌時間延長 30 秒- 60 秒。摻量= C ×4% 。1, this series water-proofing agent for powder, can be directly with liquid cement, sand and gravel etc to join, stirring time should be white than conventional mixing prolonged 30 seconds - 60 seconds. The admixture = C x 4%.2 、摻本劑的混凝土澆筑后要振搗密實,不得漏振、欠振或過振。2, the agent of mixed concrete pouring to vibrating close-grained, not after the leakage of vibration, owe vibration or vibration.3 、摻本劑的混凝土終凝成型后應(yīng)及時澆水養(yǎng)護,養(yǎng)護時間不少于 14 天;低溫季節(jié)應(yīng)加強保溫(如覆蓋草袋、薄膜等)。3, the agent of mixed type concrete end researched after water conservation should be timely, curing time not less than 14 days, Low temperature season should strengthen insulation (such as cover sack, film, etc.).九、包裝及保管:Nine, packaging and storage:1 、粉劑采用編織袋和內(nèi)襯雙層包裝,每袋凈重 25kg 。液體用塑桶25KG裝。1, powder using sacks and lined with double packing, 25kg net weight of each bag. Liquid with plastic bucket 25KG outfit.2 、運輸和保管時應(yīng)避免破損和受潮。2, transportation and keeping should avoid breakage and damp.3 、保質(zhì)期為 36個月。3, shelf life for 36 months.混凝土開裂的原因及防止措施Concrete cracking reason and its preventive measures 混凝土開裂是目前建筑工程可中最普遍、最常見的質(zhì)量通病之一,給現(xiàn)在建筑工程帶來了極大的危害,甚至也影響到某些工程項目的前期策劃。本文概述混凝土發(fā)展現(xiàn)狀,分析了混凝土內(nèi)部由于存在著溫度梯度和濕度產(chǎn)生的應(yīng)力而引起開裂現(xiàn)象,并提出了能預(yù)防混凝土開裂的有效措施?! oncrete cracking is currently building engineering can be the most popular, one of the most common quality problems, to the present construction project brings the enormous harm, even also affects certain project preliminary planning. This paper summarizes the concrete development present situation, has analyzed the concrete internal since there exist a temperature gradient and humidity produced stress caused by cracking phenomena, and put forward the concrete cracking could prevent the effective measures.混凝土開裂的原因Concrete cracking reasons 混凝土早期裂縫產(chǎn)生是因為混凝土的收縮變形與混凝土彈性模量和抗拉強度不相適應(yīng)產(chǎn)生的。混凝土的早期收縮包括:塑性階段的收縮和硬化初期的水化熱冷縮與干燥收縮兩部分。塑性收縮是由泌水沉降引起的。當收縮受到約束時,產(chǎn)生內(nèi)拉應(yīng)力,由混凝土斷面上濕度分布的梯度引起內(nèi)應(yīng)力。濕度梯度越大,內(nèi)應(yīng)力就越大,最大拉應(yīng)力在混凝土表面,收縮變形乘以彈性模量大于抗拉強度時開裂。混凝土硬化過程中,彈性模量和抗拉強度都增長,彈性模量增長的速度大于抗拉強度增長速度時,就容易開裂。同樣,混凝土水化產(chǎn)生溫度梯度也產(chǎn)生相同方向的應(yīng)力,由于現(xiàn)在的水泥中 C 3 S 和 C 3 A 的含量比過去的高,所以水化熱也較大,即使普通的梁板結(jié)構(gòu)也不能忽視溫度梯度和濕度梯度的影響。綜合上述,早期裂紋取決于混凝土內(nèi)部的濕度梯度與溫度梯度,收縮值、彈性模量與抗拉強度增長速度。 Early concrete cracks because concrete's shrinkage deformation and concrete elastic modulus and tensile strength does not adapt produces. Concrete shrinkage include: the early stage of plastic shrinkage and hardening of the early hydration heat and cold and dry shrinkage two parts. The plastic shrinkage is caused by secrete water settlement. When contraction restrained within that arise when tensile stress and by concrete section on the distribution of stress in moisture gradient. Humidity gradient is larger, the greater the internal stress, the maximum tensile stress in the concrete surface, contraction deformation multiplied by elastic modulus is greater than tensile strength when craze. Concrete sclerotic process, elastic modulus and tensile strength is growing, elastic modulus growth faster than tensile strength growth, it is easy craze. Similarly, concrete hydration produce temperature gradient also produce the same direction of stress, because now in cement C 3 S and C three A's content than the previous high, so the hydration heat is larger also, if the common beam slab structure also cannot ignore temperature gradient and humidity gradient effect. A combination of the early cracks of concrete, depends on the humidity of gradient and temperature gradient and shrinkage and the elastic modulus and tensile strength growth.防止混凝土開裂的措施Prevent concrete cracking measures 通過對混凝土開裂原因的分析,得出防止混凝土開裂的措施主要有三條,第一是在保證混凝土強度的前提下,原材料的品種選用及配合比設(shè)計原則應(yīng)是最大限度地降低水化熱及推遲水化熱峰出現(xiàn)的時間,減少溫度梯度,降低溫度應(yīng)力。可以通過采用等量取代水泥的膨脹劑,粉煤灰摻合料,正確選用粗集料等措施。第二采用良好保溫措施,控制混凝土表面與空氣間濕度差;采用飽水性微集料,控制混凝土內(nèi)部的相對濕度梯度,減少自收縮應(yīng)力。第三采用在混凝土中加入適量纖維的方法,這能有效地改善混凝土的抗拉、抗彎性能,提高混凝土的韌性和抗沖擊性能,并有效改善混凝土的抗裂性能?! hrough the analysis of the reason of concrete cracking, it is concluded that prevent concrete cracking of measures mainly has three, the first is guaranteed to the strength of concrete under the precondition of raw material breed selection and the principle of mix design should be minimized hydration heat and delay the hydration heat peak appearing time, reduce the temperature gradient, reduce the temperature stress. Can by adopting isometric substitute of expansive agent, fly ash cement admixture, the correct choice of coarse aggregate etc. The second use of good insulation measures to control the concrete surface between with air humidity poor. Adopts full water-borne micro aggregate concrete, control the relative humidity gradient, reduce autogenous shrinkage stress. Article adopted in concrete adding appropriate fiber methods, which can effectively improve the concrete tensile strength, flexural performance, improving the concrete toughness and shock resistance, and effectively improve anti-cracking performance of concrete.通過以上分析,采用下述方法克服混凝土開裂,從而提高混凝土的質(zhì)量。Through the above analysis, adopt the following ways to overcome concrete cracking, so as to improve the quality of concrete.(1)在混凝土中摻入膨脹劑(1) in the concrete mixing expansive agent 在混凝土中摻入適量的膨脹劑,利用約束條件下膨脹變形來彌補混凝土的收縮變形,抵消混凝土結(jié)構(gòu)在收縮過程中產(chǎn)生的全部或大部分的拉應(yīng)力,使混凝土的抗裂應(yīng)力大于混凝土在約束狀態(tài)下,因溫度收縮、化學收縮、干燥收縮和較高的早期彈性模量而產(chǎn)生的內(nèi)部應(yīng)力,從而防止混凝土開裂。煅燒 CaO 是氣硬性膠凝材料,具有在空氣中硬化并產(chǎn)生適應(yīng)膨脹的特性,要以部分抵補因鈣礬石水養(yǎng)護不足產(chǎn)生的收縮,并提高各齡期強度?! n concrete adding appropriate amount of the expansive agent, using the constraint condition of concrete expansive deformation to compensate for the systole, offset concrete structure in the process of shrinking generated in all or most of the tensile stress, concrete crack stress is more than concrete in the constraint condition, because the temperature shrinkage, chemical shrinkage, drying shrinkage and higher early elastic modulus and produce the internal stress, so as to prevent concrete cracking. Calcination CaO is gas rigid cementitious material, have in air sclerosis and generate adapt to the characteristics of expansion, want to be part of offset for ettringite water maintenance deficiencies produce contraction, and improve in all ages intensity. 在膨脹組分中引入煅燒的 MgO 對抑制混凝土的后期收縮,防止開裂有其獨特的益處。 MgO 較好的后期微膨脹性能,在一定程度上彌補了水泥硬化后體積收縮缺陷,增強混凝土的抗裂能力。因此,在膨脹組分中摻入適量煅燒 CaO 和 MgO 辦法來抑制混凝土的開裂,使這三種組分適當組合,取長補短從而獲得適宜的膨脹量和膨脹能,能較好地補償混凝土結(jié)構(gòu)工程的收縮開裂?! n introducing the calcination expansion components to restrain MgO style of concrete shrinkage, prevent craze later has its unique benefits. MgO style better late micro expansion performance, makes up for in some degree after hardened cement volume contraction defects, enhance the concrete the anti-cracking ability. Therefore, in inflation component of adding appropriate calcination CaO and MgO style measures to curb concrete crack, make the three components of the right combination and complement each other so as to achieve the suitable expansion amount and expansion can, they can better compensation concrete structure project shrinkage cracking.(2)在混凝土中摻入膨脹劑和粉煤灰(2) in the concrete mixing expansive agent and fly ash 粉煤灰與膨脹劑同時摻和,能改善硬化混凝土的孔結(jié)構(gòu),使大孔減少,微孔增多,使孔級配更加合理,減少由蒸發(fā)生成孔內(nèi)部負壓產(chǎn)生的收縮力,同時粉煤灰中含有活性的 SiO 2 與 A1 2 O 3 ,他們與水泥的水化產(chǎn)物 Ca(OH) 2 ,形成水泥硅酸鈣與水化鋁酸凝膠體,這兩種凝膠體對混凝土 Ca(OH) 2 強度和密實度的貢獻均比較強,能大幅度提高混凝土的后期強度?! ly ash and expansive agent simultaneously adulterating, can improve hardening of concrete pore structure, make macroporous reduce, microporous increased, make pore gradation more reasonable, reduce by evaporation generation hole internal negative pressure generated contraction forces, and fly ash contained in the activity of the SiO 2 and A1 2 O 3, they and cement hydration products Ca (OH) 2, forming calcium silicate cement hydration aluminates gels, with the two gels of concrete Ca (OH) 2 strength and compactness contributions are relatively strong, can greatly improve the post strength of concrete. 粉煤灰和膨脹土同時使用,在水泥水化初期,粉煤灰微粉分布并包裹在水泥顆粒的表面,起到了延緩和減少水化初期的水化作用,降低早期和總的水化熱,這樣較容易控制混凝土的內(nèi)部溫差,膨脹劑的膨脹作用可以補償混凝土的后期冷縮和干縮,降低混凝土的收縮變形,抵消了混凝土結(jié)構(gòu)在收縮過程中產(chǎn)生的大部分的拉應(yīng)力,從而達到防止混凝土開裂的目的?! ly ash and expansive soil use at the same time, in the initial stage, fly ash cement hydration micro-powder distribution and wrapped in cement particle surface, played a delay and reduce early hydration, reduce early hydration function and total hydration heat, so more easily control the internal temperature of concrete expansive agent can compensate the expansion effect of concrete cold and dry shrinkage later, reduce the concrete's shrinkage deformation, offsetting concrete structure in the process of shrinking generated in most of the tensile stress, achieve prevent concrete cracking of purpose.(3)在混凝土中摻入膨脹劑和纖維(3) in the concrete mixing expansive agent and fiber 為了克服單一膨脹劑的缺陷,在混凝土中引入聚丙烯纖維。由于膨脹劑在水泥水化產(chǎn)物發(fā)生足夠數(shù)量的鈣礬石膨脹源,并在限制膨脹的條件下產(chǎn)生內(nèi)部膨脹應(yīng)力來抵消由于體積收縮產(chǎn)生破壞性拉應(yīng)力,從而達到預(yù)防開裂的目的。雖然膨脹劑對防止早期開裂具有重要作用,、但對后期開裂作用微乎其微,而聚丙烯纖維是在混凝土強度提高到一定程度,使纖維與混凝土基體間有足夠的握裹強度,從而起到相應(yīng)防裂作用。這是由于纖維以單位體積內(nèi)較大數(shù)量均勻分布于混凝土內(nèi)部,在微裂開始形成時,必然遭到纖維所產(chǎn)生的彈性應(yīng)力的阻擋,消耗能量,使微裂難以進一步發(fā)展。 In order to overcome the defects of single expansive agent in concrete, introduction of polypropylene fiber. Because expansion agent in the cement hydration products happened a sufficient number of ettringite expansion sources, and the restricted expansion conditions produce internal stress to offset due to expansion volume contraction devastating tensile stress cracking, so as to achieve the purpose of prevention. Although expansive agent to prevent early-cracking plays an important role, but to little effect, and later cracking in concrete strength polypropylene fiber is raised to a certain degree, fibre and concrete matrix between have enough grip bond strength, thus plays corresponding crack-proof role. This is because fiber with per unit volume larger Numbers evenly among concrete interior, in micro cracked begin to form, the inevitable by fiber produced by elastic stress and preventing, energy consumption, make the micro cracked difficult to further development.(4)在混凝土中摻入膨脹劑同時對混凝土進行微養(yǎng)護(4) in concrete mixing expansive agent simultaneously on the concrete micro curing 高性能混凝土在工程應(yīng)用中最大障礙是早期的開裂問題,這時混凝土通常水泥用量大,水泥水化過程產(chǎn)生化學收縮,在水泥漿體中形成空隙,導致內(nèi)部相對應(yīng)濕度降低和自收縮,致使混凝土結(jié)構(gòu)開裂,因此對于高性能混凝土在加強對外部濕養(yǎng)護的同時,還應(yīng)進行內(nèi)部養(yǎng)護,其中包括利用適量飽水集料提供微養(yǎng)護所需的水分?! igh-performance concrete in engineering application of biggest obstacle is early cracking problem, then concrete usually dosage of cement, cement hydration processes produce chemical contraction, in the slurry formation, resulting in internal gaps correspond humidity is reduced and autogenous shrinkage of concrete structure, causing cracking, so for high-performance concrete in strengthen the external wet maintenance of time, we should carry on the internal maintenance, including using ShuiJi materials provide adequate satisfied micro necessary conservation of water. 輕集料為燒結(jié)熔融材料,其中分布著直徑 10 ~ 100μm 近似球形的孔,提高內(nèi)部相對濕度,對于促使水泥達到最大水化程度,防止混凝土結(jié)構(gòu)早期開裂具有重要作用。在混凝土中摻入膨脹劑,抵消混凝土結(jié)構(gòu)在收縮過程中產(chǎn)生的部分應(yīng)力,并與微養(yǎng)護相結(jié)合,可以有效預(yù)防混凝土開裂?! ightweight aggregate for sintering molten material, including distributed the diameter of10 ~ 100μm approximate spherical hole, improve internal relative humidity, for motivating cement hydration to achieve maximum extent, prevent concrete structure early-cracking plays an important role. In the concrete mixing expansive agent in concrete structure shrinkage and offset produces in the process of stress, and micro part maintenance unifies, can effectively prevent concrete cracking.