LESS CEMENT = STRONGER CONCRETE? Let's Talk About Concrete Admixture!
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- Опубликовано: 11 окт 2022
- When mixing concrete on the jobsite, it's quite hard to achieve the compressive strength specified on its mix design, especially when you need around 4,000 up to 7,000 psi of compressive strength.
This is where admixtures for concrete come in.
Ingredients added to concrete, other than Portland cement, aggregates, or water, are referred to as concrete admixtures. While not required, they are sometimes used selectively to improve the concrete mix.
Admixtures are used in concrete to alter its properties in various ways. Some common uses include improving workability, increasing or decreasing cure time, and increasing concrete strength. Admixtures can also be used for aesthetic reasons, such as to change the color of the cement.
Whenever possible, concrete workability, water tightness, and strength should be achieved by selecting suitable types of aggregate, Portland cement, and maintaining a good water-cement ratio.
In this episode, we're going to solve this problem using concrete admixtures, particularly the type of admixture that most small to medium projects need.
- Water-Reducing Admixtures
Water-reducing admixtures reduce the amount of water needed to produce concrete of a given consistency. They can also be used to improve the slump of concrete without requiring additional water, resulting in a lower water-cement ratio.
By lowering the water-cement ratio, water-reducing admixtures can provide greater concrete strength while retaining the same workability. Lignin sulfonic acids and metallic salts are commonly used as water-reducing admixtures.
- Superplasticizers
Superplasticizers are organic compounds that transform a stiff concrete mix into one that flows more freely. They work by coating cement particles, causing them to break away from the lumps that typically result from mixing cement and water.
Superplasticizers give each cement particle a negative charge, which causes them to repel each other providing a more thorough distribution. They are used either to facilitate placement of concrete or to reduce the water content of a concrete mix in order to increase its strength.
- Accelerating Admixtures
Accelerating admixtures, or accelerators for short, make concrete cure more quickly. In addition, they accelerate the strength development of concrete. Strength development can be further accelerated by using Type III high-early-strength Portland cement.
By curing concrete at higher temperatures or lowering the water-cement ratio, additional acceleration can be achieved. Accelerators are typically used in cold weather to develop strength faster in order to offset potential freeze damage.
With that, let's find out how admixtures can save cement cost while allowing you to achieve sufficient strength based on the function of the concrete.
IMPORTANT NOTE: The sample concrete mix designs in the video are not absolute. Proportioning of aggregates, sand, water will still depend on several factors, such as external conditions, dryness of the aggregates, temperature in the area, etc. Onsite testing is still recommended.
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IMPORTANT NOTE: The sample concrete mix designs in the video are not absolute. Proportioning of aggregates, sand, water will still depend on several factors, such as external conditions, dryness of the aggregates, temperature in the area, etc. Onsite testing is still recommended.
Hello
Is it safe to assume that I can omit using temperature bars (steel matting) when adding around 75mm concrete topping for my existing slab with steel deck?
Hoping for your immediate response, thank you :)
is it compatible with waterproofing compound additive which ilikewise to be added to concrete mixture especially for roof decks
Hi, thank you for your inquiry. It is compatible with our Blockout IWL integral waterproofing liquid.
Sana kumpleto po ang buildrite items na i.distribute sa buong pilipinas sir derrick...kasi dito sa davao dalawa lang ang ezclusive distributor ng buildrite...
Kung wala kaming makita na buildrite product from the 2 distributor, we find another product... sana ma.address po ito sir derrick... salamat and more power
Hi Sir/Mam, Thank you for pointing that out. Please send us a direct message on Facebook Messenger so we can refer you to our Area Sales leader assigned in Davao to properly assist you with the availability of stocks and help you find the Buildrite products that you need. Thank you. If you have any more concerns, please feel free to ask so we can help. Here is our official Facebook page: facebook.com/BuildritePhils
sa ACI book po sir TYPE D is water reducing and retarding and yung TYPE E po is water reducing and accelerating po
Hi, thank you for pointing this out. We will immediately review this and correct it once verified.
Sir Derick paturo po paano mixtures nyan sa paggawa ng chb. Thank you in advance
Hi, thank you for your inquiry. Ritemix PC 100, 200 and 300 are not recommended for CHB making. What we recommend to use is our Ritemix Blockspeed or Blocksave.
Ritemix Blockspeed increases the initial rate of chemical reaction between cement and water to accelerate concrete stiffening, hardening, and strength gain - cutting the process to only 1 day instead of 3. This allows early stripping of formworks, increased production rate, and faster delivery time. You can see this post for your reference: facebook.com/BuildritePhils/photos/a.256515081150962/2550880258381088/
RITEMIX BLOCKSAVE is CHLORIDE-FREE, water-reducing admixture. It disperses the fine particles in the concrete mix, enabling the concrete's water content to perform more effectively and improve its consistency. This produces higher levels of workability for the same water content, allowing better water reduction and increased strengths. You can see this post for your reference: facebook.com/BuildritePhils/photos/a.256515081150962/2125501574252294
Sir with due respect, for site mix, it is much more better to use type F as retardation is not needed. From experience, a reduction of is easily attained. By the way, chemical admixtures for concrete are dispersing agent to allow cement particles to be spread with ease for its intent to bind the fillers used in the concrete mix using less water to do. For type F being a high range water reducing admixture, about 20 to 25% of watet is reduced, for mid-range is 15 to 20% and the low water reducer is 10 to 15%. And of course, a lot more value added benefits are made with the use of admixture.
Thank you for taking the time to share your opinion. We hope to have time to share more with you. Please feel free to ask if you have any other concerns. We are more than glad to help.
ano po appropriate ratio of cement and sand mixture(including PC100) for plastering EPS panel?
Hi, thank you for your inquiry. Ritemix PCs are used for concrete mixtures (sand, cement, and aggregates) only. It is not for mortar (sand and cement) mixtures.
Sana ma features nio kung akong adhesive ang ginamit sa graditel walltech panels.. para po sa gusto mag diy gumawa ng panels
Hi, thank you for pointing this out. Your opinions and suggestions are important to us. We will pass this along with the appropriate department.
cement ratio of 1 : 2 : 4 w/o ritemix pc100 is same or greater sa cement ratio 1 : 2.5 : 5 w/ ritemix pc100?
Hi.Thank you for your inquiry.Ritemix Pc 100 400 ml in 1 bag 40 kg cement.
sir. yung concrete mix design po PC100 na pinakita nyo applicable for job site batch for pavement?
Hi, thank you for your inquiry. As long as the concrete mix design reached the load design of the pavement, then you can use it.
Is it safe to use for slab with steel deck?
Hi, thank you for your inquiry. Yes, you can use Ritemix PC on slab with steel deck.
good afternoon po sir
sir advisable po ba na maglagay ng PC100 rite mix sa concrete pump po ?
thank you po sa sagot.
Hi, thank you for your inquiry. Yes, sir. Please message us directly on our official facebook page, so we can talk more about your inquiry.
Sir nkabili n po kmi ng buildrite admixture. Ang balak po nmin ni engineer ay gawin 3000psi ang design mix. 1-2-4 p din po b ang cement-sand-gravel ratio nito? Thanks
Hi, thank you for your inquiry. Admixture is subject for trial mix. In order to fully answer your concern, we would like to request some further details from you. Please send us a message on our official Facebook page: facebook.com/BuildritePhils
Anu maganda pang mix sa hollow block at pambakod?
Hi, thank you for your inquiry. For hollow blocks making admixtures, we have two different products that you can use:
(1) Ritemix Blocksave - it increases production of hollow blocks by 30%. facebook.com/BuildritePhils/photos/a.256515081150962/2125501574252294
(2) Ritemix Blockspeed - it accelerates curing of concrete blocks to 1 day from 3 days. facebook.com/BuildritePhils/photos/a.256515081150962/2550880258381088/
Cgro sa susunod na paggawa nmin ng bhy lht puro buildrite lng para safe .. sakit sa ulo pag tagal
Hi, thank you for your comment. If you need technical assistance, you can message us directly via our official Facebook page: facebook.com/BuildritePhils
Sir puwede po ba hallow blocks yan na panghalo
.
We have two types of admix for CHB production.
1st is Blocksave, you can produce a lot of CHB because you can add sand
and 2nd is Blockspeed, you will be able to produce more because your mixture will dry faster.
shop.magnaprime.com.ph/products/buildrite-ritemix-blocksave-red?_pos=1&_sid=04b69babf&_ss=r
shop.magnaprime.com.ph/products/ritemix-blockspeed?_pos=1&_sid=d7f693a3b&_ss=r
Sir ano po ang pinakamatibay na ratio ng cement to sand for stronger concrete. 1 is to 1 po ba or 1 is to 2 or 1 is to 3. Thanks po
Hi.Thank you for your inquiry.1 is to 3 po sir. In order to fully answer your concern, we would like to request some further details from you. Please send us a message on our official Facebook page: facebook.com/BuildritePhils
Boss tanung ko lng nag cementitious waterproof na sa roof deck gusto kng lagyan ng toppings ano ang pwede ko gamitin na topping materials?
Hi, thank you for your inquiry. We recommend Buildrite's Cement grip and Hardcrete 310 as topping for cementitious waterproofing. You can watch this video for your reference: ruclips.net/video/2NdXHfTcNPc/видео.html
@@BUILDRITECONSTRUCTIONCHEMICALS boss saan nabibili ang produkto ng buildrite? Yun ang gagamitin ko sa roof deck, t&b at exterior wall at interior wall waterproofing.
Good day! You can order online via our Magna Prime Shop (bit.ly/3D8vqLx) or our official Lazada and Shopee shop (s.lazada.com.ph/s.fFwNe) or buy from our partner depots near you (bit.ly/3PKbnZW)
Pwede po malaman ratio ng PC100,cement,sand aggregates and water,thank you
Hi, thank you for your inquiry. Makikita nyo po sa video mismo ang design mix para sa PC 100. ruclips.net/video/iq9DVKF3S0Q/видео.html
Sir anu na mix ng hollow block mag gawa na matibay?
Hi, thank you for your inquiry. For hollowblocks making, we only have (1) Ritemix Blockspeed to accelerate curing: facebook.com/BuildritePhils/photos/a.437112413091227/1980344855434634/
and (2) Ritemix Blocksave that increases the production of hollow blocks by 30%: facebook.com/BuildritePhils/photos/a.256515081150962/2125501574252294/
sir magandang hapun po sir ano kaya po ang maganda sa crak ng cemento
Hi, thank you for your inquiry. It depends on what tyoe of cracks. Please message us on our Facebook page so we can discuss your inquiry: facebook.com/BuildritePhils
Sir anu po kailangan ko admixture Para po sa rooftiles
Hi, thank you for your inquiry. Ano po ba ang gustong ma-achieve sa roof tiles?
Hi sir.. Napanood ko po dun sa isa ninyong video na ang screed ay para sa 1-50mm thickness, otherwise cement topcoat na from 75mm pataas.
May slope kasi sa garahe at kailangan ko pong i-level. Nasa 4-5in po ang hahabulin. Anong cement mix ratio po kaya ang optimal?
Pwede po kayang wala nang aggregates kundi admixture na lang? Need din po ba ng wiremesh?
Hi, thank you for your inquiry. We recommend using cement, sand, and aggregates plus Ritemix PC100 using the same ratio shown on this video. We also recommend to use reinforcements.
sir 2 type ng coarse aggregate ang aggamitin? G1 at 3/8?
Hi, Thanks for your inquiry. Only one aggregate will be used and it depends on the design. For further assistance you may reach us here facebook.com/BuildritePhils
How much % of water can be reduce?
Hi, thank you for your inquiry. It can reduce up to 50% water per bag of cement. However, the exact dosage required is best established by site trials.
Does it consist ion chloride?
Hi,Thanks for your interest to our product. For confirmation of the product content, kindly send us an email request to our Research and Development Department with the specific requirements of your inquiry. Your request will be carefully considered, and an authorized department will address to your concerns. Please send your email at customerservice@magnaprime.com.ph
Where i can buy this in Cebu? Who is your retailer store?
San po nakkabili ng panghalo na yan
Hi, Thank you for your inquiry! You can order online via our Magna Prime Shop (bit.ly/3D8vqLx) , official Lazada and Shopee shop (s.lazada.com.ph/s.fFwNe) or you may send to us your exact address on our official facebook page: facebook.com/BuildritePhils
and we will be more than glad to help you find the nearest store or hardware where you can buy our products.
Sa hollowblocks paano ma achieve kahit 1000psi
Hi, thank you for your inquiry. Our admixtures available for CHB making are Ritemix Blockspeed and Ritemix Blocksave.
(1) Blockspeed is an accelerating type of admixture for concrete blocks that allows early strength development and curing. facebook.com/photo/?fbid=228851479664632&set=a.184760584073722
(2) Blocksave admixture increases production of hollow blocks by 30%. facebook.com/BuildritePhils/photos/a.256515081150962/2212807102188407/
mayroon po kau sa pangasinan area po
Hi, we would like to know where your exact location in(Pangasinan) so we can help you find the nearest store in your area. For product assistance and availability, we have Technical Sales to assist you. Please reply to our personal message for the details.
Mukha mahal sya...mas mura ang tibaymix at mas malaki ang tipid
Hi, thank you for your inquiry. The dosage of Ritemix PC is 400ml per 1 bag of cement. For every 20L cby, it is good for 50 bags of cement. Please find below our prices for Ritemix PC:
Ritemix PC 100 20L/cby - 1,600.00
Ritemix PC 200 20L/cby - 1,800.00
Ritemix PC 300 20L/cby - 2,400.00
here are my questions bale 3 questions po, pero kung “no” ang sagot sa number 1 don’t bother on next two questions po.😊
1.) Pwede po ba sya sa hollow blocks making.. commercial purpose.
if yes…
2.) anung type ang angkop sa chb making?
3.) additional cost vs profit kung sakaling gamitin sya sa chb.
salamat po.
Hi, thank you for your inquiry. We have different admixtures for CHB making.
(1) BLOCKSAVE - it is CHLORIDE-FREE, water-reducing admixture. It disperses the fine particles in the concrete mix, enabling the concrete's water content to perform more effectively and improve its consistency. This produces higher levels of workability for the same water content, allowing better water reduction and increased strengths. You can see this post for your reference: facebook.com/BuildritePhils/photos/a.437112413091227/1977366559065797/
(2) BLOCKSPEED - it increases the initial rate of chemical reaction between cement and water to accelerate concrete stiffening, hardening, and strength gain - cutting the process to only 1 day instead of 3. This allows early stripping of formworks, increased production rate, and faster delivery time. You can see this post for your reference: facebook.com/BuildritePhils/photos/a.256515081150962/2550880258381088/