Superplastiklashtiruvchi

Concrete Superplasticizer Overview

A water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete basically unchanged. Concrete mixture has a dispersing effect on cement particles, which can improve its workability, reduce the unit water consumption, improve the fluidity of concrete mixture; or reduce the unit cement consumption and save cement.

Types of water reducers

Ishlash bo'yicha, uni oddiy suv reduktoriga bo'lish mumkin, yuqori samarali suv reduktori, va yuqori samarali suv reduktori.
1) Oddiy suv reduktori suvni kamaytirish tezligidan kam bo'lmagan aralashmani anglatadi 8% betonning cho'kishi asosan bir xil bo'lishi sharti bilan.

2) Yuqori samarali suv reduktori suvni pasaytirish tezligidan kam bo'lmagan aralashmani anglatadi. 14% betonning cho'kishi asosan bir xil bo'lishi sharti bilan.

3) Yuqori samarali suv reduktori suvni kamaytirish tezligidan kam bo'lmagan aralashmani anglatadi 25% betonning cho'kishi asosan bir xil bo'lishi sharti bilan. Yuqori samarali suv reduktorlari bilan solishtirganda, u cho'kishni yaxshi ushlab turish ko'rsatkichiga ega, kichik quritish qisqarishi va ma'lum havo kiritish ko'rsatkichlari.

Yuqori samarali suv reduktorining beton modifikatsiyasiga qo'shgan muhim hissasi tufayli, uning qo'llanilishi beton rivojlanish tarixida temir-beton va oldindan zo'riqtirilgan betondan keyin uchinchi yutuq bo'ldi., Bu betonning dastlabki qo'lda quyish yoki osilgan tankni quyishdan nasos konstruktsiyasiga qadar rivojlanishiga imkon berdi, ishchi kuchini tejash, ish samaradorligini oshirish, sifatini ta'minlash, shovqinni yo'q qilish, va betonning texnik darajasi va qurilish darajasida katta sakrash.

Suv reduktorining ta'sir qilish mexanizmi

1) Dispersiya

Tsement suv bilan aralashtirilgandan keyin, tsement shlami flokulyatsiya tuzilishini hosil qiladi, va 10% uchun 30% aralashtirish suvining tsement zarralari bilan o'ralgan va erkin oqim va moylashda ishtirok eta olmaydi., Shunday qilib, beton aralashmaning suyuqligiga ta'sir qiladi. Suv reduktori qo'shilganda, suv reduktor molekulalari tsement zarralari yuzasida bir xil zaryadga ega bo'lishi uchun yo'nalishli adsorbsiyalanishi mumkin. (odatda manfiy zaryad), elektrostatik itarish effektini hosil qiladi, tsement zarralarini bir-birini tarqatishga undash, flokulyatsiya strukturasi parchalanadi, va oqimda ishtirok etish uchun suvning o'ralgan qismini qo'yib yuboring, shu bilan beton aralashmaning suyuqligini oshiradi.

2) Moylash effekti

Suv reduktoridagi hidrofilik guruh juda qutbli. Tsement zarralari yuzasida suv reduktorining adsorbsion plyonkasi suv molekulalari bilan barqaror solvatlangan suv plyonkasini hosil qilishi mumkin.. Ushbu suv plyonkasi yaxshi moylash ta'siriga ega va tsement zarralari orasidagi toymasin qarshilikni samarali ravishda kamaytirishi mumkin, shunda betonning suyuqligi yanada yaxshilanadi..

3) Sterik to'siq

Suv reduktor strukturasidagi gidrofil yon zanjirlar suvli eritmada cho'ziladi va adsorbsiyalangan tsement zarralari yuzasida ma'lum qalinlikdagi gidrofil uch o'lchovli adsorbsion qatlam hosil qiladi.. Tsement zarralari yaqin bo'lganda, adsorbsion qatlamlar ustma-ust tusha boshlaydi, ya'ni, tsement zarralari orasida sterik to'siq paydo bo'ladi. Qanchalik ko'p o'xshashlik, sterik repulsiya qanchalik katta bo'lsa va tsement zarralari orasidagi bog'lanishga shunchalik katta to'sqinlik qiladi, shunda beton yaxshi cho'kishni saqlaydi..

4) Payvandlangan kopolimer yon zanjirlarining sekin-ajralish ta'siri

Yangi suv reduktorlarini tayyorlash jarayonida, polikarboksilik kislota suv reduktorlari kabi, suv reduktorining molekulalarida ba'zi yon zanjirlar payvandlanadi. Yon zanjirlar nafaqat sterik to'siq ta'sirini ta'minlabgina qolmay, balki tsement hidratsiyasining yuqori gidroksidi muhitida ham asta-sekin kesilishi mumkin., tsement zarralarining dispersiya ta'sirini yaxshilash va cho'kish yo'qotilishini nazorat qilish uchun dispers ta'siri bilan polikarboksilik kislotani chiqarish.

Nima uchun beton suvni kamaytirishi kerak?

Beton aralashmasi nisbatining asosiy parametri suv-tsement nisbati hisoblanadi, ya'ni, suvning tsementli materialga nisbati. Suv-tsement nisbati qanchalik yuqori bo'lsa, yangi plastik betonning ish qobiliyati qanchalik yaxshi bo'ladi, qurish qanchalik oson, lekin betonning mustahkamligi qanchalik past bo'lsa. Ushbu qarama-qarshilikni hal qilish uchun, ish qobiliyatini yo'qotmasdan mustahkamlikni yaxshilash yoki ish qobiliyati va mustahkamligini saqlab turganda sement dozasini kamaytirish uchun suv reduktorini qo'shish kerak..

Suv reduktorining asosiy vazifasi betonning suv sarfini kamaytirishdir, va beton materiallar uchun ajralmas xom ashyolardan biridir. Betonning mustahkamligi suv-tsement nisbati bilan chambarchas bog'liq. Muayyan pasayishda, suv iste'moli qanchalik kichik bo'lsa, kuch qanchalik baland bo'lsa. Suv reduktorini qo'shish suv sarfini kamaytirishi mumkin, shu bilan birga tushkunlik o'zgarmasdan qoladi, Shunday qilib, betonning mustahkamligini oshiradi.

C30 dan past bo'lgan past quvvat darajasida, suv reduktoridan foydalanish tsement sarfini kamaytirishi mumkin, xarajatlarni kamaytirish, va plastik betonning ish qobiliyatini yaxshilash.

C40 dan C50 gacha bo'lgan o'rtacha quvvat darajasida, a water reducer is generally required to ensure the workability (pumping) and strength of concrete.

For the high strength grade range above C50, without the use of a high-efficiency or high-performance water reducer, the concrete has basically no workability and cast-in-place concrete is difficult to construct.

Pumped concrete should be mixed with a pumping agent or water reducer, and mineral admixtures should be added; a high-performance water reducer with a water reduction rate of not less than 25% should be used for high-strength concrete above C60; mineral admixtures and slow-setting water reducer should be added to large-volume concrete.

Kompaniya profili

ConcreteFashion is the global leader in Low-Density Cellular Concrete (LDCC), Uyali yengil beton (CLC), va ilg'or muhandislik ko'pikli echimlar. Tadqiqotga sodiqligi bilan butun dunyoga tanilgan, innovatsiya, va amaliy ekspertiza, biz 2012 yil boshidan beri ishlab chiqilgan ko'pikli echimlarni taqdim etmoqdamiz.

Biz yuqori sifatni ta'minlay olamiz superplastiklashtiruvchisuch asNaphthalene Superplasticizer, HPEG 2400 PolycarboxylateSuperplasticizer, High slump retaining type polycarboxylate superplasticizer admixture, Polycarboxylate Ether superplasticizerand otherBeton superplastiklashtiruvchi all over the world.

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Package of Polycarboxylate Superplasticizer Powder

25Kg woven outer bag lined with plastic bag, xona haroratida yorug'likdan uzoqda saqlanadi, namlik va yomg'ir.

Storage of Polycarboxylate Superplasticizer Powder

Plastik qoplar bilan qoplangan qog'oz plastmassa kompozit qadoqlash

FAQs of Concrete Superplasticizer

Q: Just how do superplasticizers function?
A: Superplasticizers work by dispersing concrete particles, minimizing inter-particle rubbing and allowing the mix to move more freely with less water.

Q: Can superplasticizers be utilized with all types of concrete?
A: The majority of superplasticizers are compatible with standard sorts of cement, but compatibility with details blends should be evaluated to make certain optimum efficiency.

Q: Are there any kind of disadvantages to utilizing superplasticizers?
A: While useful, superplasticizers can sometimes create problems such as enhanced blood loss if excessive used or postponed establishing times. Proper does and blending techniques are necessary.

Q: How do I store superplasticizers?
A: Store superplasticizers in a great, quruq joy, shielded from direct sunshine and cold temperatures. Follow manufacturer standards for best outcomes.

Q: What is the life span of a superplasticizer?
A: Life span differs depending on the kind and storage space conditions however normally ranges from 6 months to a year. Constantly examine the producer's referrals.