ConcreteAdditives.net is an independent reference on concrete additives, the chemical admixtures, supplementary cementitious materials, fibers and integral pigments added to a concrete batch, and it states every value with its issuing body, edition and basis. Who publishes it, where do its numbers come from, and why does it sell nothing?
ACI PRC-212.3-16 sorts chemical admixtures into 12 groups, and the reference covers those groups together with supplementary cementitious materials such as fly ash and slag cement, fibers such as steel and polypropylene, and integral pigments such as iron oxide. The four families are compared on the overview of concrete additives.
ConcreteAdditives.net is vendor-neutral and written for producers, specifiers, contractors, distributors and procurement staff. Its values come from 9 kinds of primary sources, for example ASTM C494/C494M-24, EN 934-2:2009+A1:2012 and ACI CODE-318-25, each with edition and status; an EN 934-2 admixture is dosed at not more than 5 % by mass of the cement content. The ConcreteAdditives.net Editorial Team writes under one byline, sells no product and accepts no payment for placement.
Each value is traced to its source: standards and codes to their issuing body, product values to the data sheet named with them, prices to the dated source beside them (methodology and fact-checking).
What Kind of Publication Is ConcreteAdditives.net?#
ConcreteAdditives.net is an independent, vendor-neutral handbook on what each concrete additive is, how it works, how much is dosed, which standard classifies it and how it changes fresh and hardened concrete.
ConcreteAdditives.net sells no product. It is not a standards body, so ASTM, CEN, BIS and ACI documents stay with their issuer, and it is not a testing laboratory, so it runs no tests.
Who is the concrete additives reference written for?#
The reference is written for 5 reader groups, listed below.
- Producers, such as ready-mix and precast quality-control staff and mix designers
- Specifiers, such as structural and materials engineers and writers of DOT and owner specifications
- Contractors, such as shotcrete, pervious concrete and hot- and cold-weather placement crews
- Distributors of admixtures, supplementary cementitious materials, fibers and pigments
- Procurement staff who buy these materials
Residential questions get specification-level answers, never do-it-yourself steps.
What Does ConcreteAdditives.net Cover?#
ConcreteAdditives.net covers 4 additive families (chemical admixtures, SCMs, fibers and integral pigments), plus the substances behind them, the special concretes they make possible, and the properties, durability mechanisms, tests and standards that measure them, as Table 1 shows.
Table 1 lists the sections of the reference and the question each one answers.
| Section | What it answers | Example question |
|---|---|---|
| concrete admixtures | the 12 groups of ACI PRC-212.3-16 and their types | Which admixture type extends slump life? |
| supplementary cementitious materials | fly ash, slag, silica fume and other SCMs | Which SCM controls ASR? |
| fiber-reinforced concrete | steel, synthetic, glass, basalt and other fibers | Steel or macro-synthetic fiber for a slab? |
| concrete pigments and integral color | iron oxide and other integral pigments | How is integral color dosed? |
| concrete additive chemistry | the substances behind admixtures and pigments | What is polycarboxylate ether made of? |
| special concretes | special concretes and hot- and cold-weather practice | Which admixtures make a mix self-compacting? |
| concrete properties | workability, setting time, w/cm, mix design | How does a retarder change setting time? |
| concrete durability | ASR, freeze-thaw, sulfates, chlorides, shrinkage | Which mechanism does entrained air prevent? |
| fresh concrete tests | slump, air content, slump flow, RCPT | Which test accepts an SCC mix? |
| concrete admixture standards | ASTM, EN, IS and ACI documents | What does a C494 Type F claim require? |
| concrete additives compared | type against type | PCE or SNF? |
| concrete admixtures by application | precast, ready-mix, pavements, marine and more | Which admixtures does a bridge deck need? |
| concrete admixture manufacturers and suppliers | how supply works and how data sheets compare | What should an RFQ contain? |
| calculators and quote tools | dosage, w/c and mix design calculators, request forms | How many liters of admixture per batch? |
| concrete additives news | standard revisions and regulatory changes | What changed in a standard? |
A concrete additive is something added to a concrete, mortar, grout or shotcrete batch that a producer, specifier or contractor selects and doses, or the standard, test, property or special concrete that exists because of it. "Concrete additive" is a trade umbrella term, not a term defined by ACI, ASTM or EN.
What the reference leaves out#
The reference stops where a product is no longer something a producer, specifier or contractor adds to a batch; 5 exclusions are listed below.
- No do-it-yourself or bagged-mix instructions.
- No concrete products as such, such as blocks, pipes and precast elements.
- No equipment, such as mixers, pumps and batching plants.
- No local contractor search.
- No brand pages and no brand rankings.
Products applied to the surface of hardened concrete, such as curing compounds, sealers and repair mortars, and additives dosed at the cement mill are outside this reference. A substance with several uses is described for its concrete use only.
Which Primary Sources Does ConcreteAdditives.net Use?#
ConcreteAdditives.net takes its values from 9 kinds of primary sources, each named in the sentence that uses it: standards bodies, a building code institute, EU and US regulators, a highway agency and journals.
The 9 are ASTM International, CEN, the Bureau of Indian Standards (BIS), the American Concrete Institute (ACI) code and reports, ECHA, EUR-Lex, OSHA rules in the eCFR, FHWA reports and peer-reviewed journals. Table 2 shows what each supplies, with one dated example.
| Source | Issuer | Supplies | Example |
|---|---|---|---|
| ASTM standards (ASTM C494) | ASTM International | US product and test standards | ASTM C494/C494M-24, active (ASTM store, updated 2024-08-06), eight types A to G and S |
| EN standards (EN 934-2) | CEN | European product and concrete standards | EN 934-2:2009+A1:2012, harmonised under Regulation (EU) No 305/2011: an admixture is dosed at not more than 5 % by mass of the cement content (3.2.1) |
| Indian Standards (IS 9103) | Bureau of Indian Standards (BIS) | Indian product and code standards | IS 9103:1999, active, reaffirmed 2018, with two amendments (BIS); five admixture types |
| ACI code | American Concrete Institute | building-code limits | ACI CODE-318-25 Table 19.3.2.1: water-soluble chloride at most 0.15 % by mass of cementitious materials for nonprestressed concrete in Exposure Class C2, 0.06 % for prestressed |
| ACI reports (ACI 212.3R) | American Concrete Institute | guidance without requirements | ACI PRC-212.3-16 (formerly ACI 212.3R-16), 76 pages, supersedes ACI 212.3R-10 |
| ECHA | European Chemicals Agency | EU hazard classification | calcium chloride (CAS 10043-52-4): Harmonised CLP Annex VI (index 017-013-00-2): Eye Irrit. 2, H319 |
| EUR-Lex | Publications Office of the EU | EU regulations | Regulation (EU) 2024/3110 applies from 2026-01-08; EN 934 stays harmonised under Regulation (EU) No 305/2011 until a new citation |
| OSHA rules in the eCFR | US Occupational Safety and Health Administration | US workplace exposure limits | OSHA PEL 50 µg/m³ 8-h TWA, action level 25 µg/m³ (29 CFR 1926.1153, effective 2016-06-23) for respirable crystalline silica |
| FHWA reports and peer-reviewed journals | Federal Highway Administration; journal publishers | agency guidance and study results | agency result: about 3 to 5 % lower 28-day compressive strength for each percentage point of air (FHWA-HIF-20-085); study result: lime clasts in Roman concrete linked to crack self-healing (Seymour et al., Science Advances, 2023) |
Manufacturer data sheets and declarations appear only as the value of one named product, never as a requirement. A data sheet never overrides a standard, and a newer official source beats this reference.
How are values checked, dated and labeled?#
Every standard carries its full designation, edition and status, so ASTM C618-26 and EN 206-1:2026 name the exact version a number comes from, and a withdrawn standard such as ASTM C1017 (withdrawn 2022) is labeled withdrawn.
Table 3 sets out the labeling conventions with one example each.
| Value type | Convention | Example |
|---|---|---|
| Standard edition | full designation, edition, status | ASTM C618-26, active since 2026-08-11; EN 206-1:2026 supersedes EN 206:2013+A2:2021 |
| Withdrawn standard | labeled withdrawn, with year | ASTM C1017, withdrawn 2022, no replacement |
| Value read in an older edition | the edition it was read in | Types F and G: water content at most 88 % of the control, stated as ASTM C494/C494M-17 and -19e1 Table 1 values |
| Standard requirement vs product guidance | requirement with edition and clause; guidance labeled as such | ASTM C979/C979M-24 caps the prescribed pigment dose at 10 % by mass of cement (1.4); one pigment supplier's guide recommends 1 to 5 % by mass of cementitious material |
| Study result | study, journal and year named | Seymour et al., Science Advances, 2023 |
| Dose | always with its basis | % by mass of cement or of cementitious materials, mL/100 kg (fl oz/cwt) of cementitious material, kg/m³ (lb/yd³) of concrete |
| Hazard line | harmonised CLP Annex VI with index, else ECHA C&L notified majority, else "see the product safety data sheet" | calcium chloride, Annex VI index 017-013-00-2 |
| Cost and market | dated public-record ranges with region, currency, unit and date; market sizes as analyst estimates with publisher and year | prices appear only as dated ranges |
Each value passes a fact-checking step against its issuing body, and a value no primary source confirms is left out, not estimated. A water-content value from ASTM C494 is stated with the edition it was read in, and a requirement, a product guide and a study result are kept apart; each step is described in our fact-checking methodology.
How Does ConcreteAdditives.net Stay Independent?#
ConcreteAdditives.net stays independent because it sells no product, ranks no brand, and no company pays for placement in its tables, comparisons or answers.
As of 2026-10-23 we have given no company a lead position among the providers and suppliers that receive requests. Topic pages name no company, and we answer brand questions by what a standard requires, for example what an ASTM C494 Type F claim requires.
Two forms exist: one to request quotes from concrete admixture suppliers and one to reach a mix design, testing or specialty placement provider. Independent suppliers and providers receive requests; none pays to appear here (editorial policy).
Who Writes ConcreteAdditives.net?#
Safety statements cite the safety data sheet and the regulator, give no medical advice and never downplay a hazard.
How Can Readers Contact the Editors or Report an Error?#
Readers reach the editors at editorial@concreteadditives.net or through the contact form, for a question about a value, a page or a request.
An error report names the page and the value in question, so the editors can compare it with the issuing body. The form and its fields are on the contact page. Data sent through forms is kept for 24 months, as the privacy policy sets out.
Why do topic pages name no company?#
Topic pages name no company because they compare additive types by standard, class and dose, and a maker appears only as the source of one product value.
Does the reference replace a standard, data sheet or SDS?#
No: for a specific product, its data sheet, declaration and safety data sheet govern, and for a requirement the standard or code itself governs; the reference cites them with edition and clause.
Why are values given in metric and US units?#
Values appear in metric units first with US units in parallel, such as kg/m³ (lb/yd³) and mL/100 kg (fl oz/cwt), because ASTM, EN and IS documents govern the same additives side by side. The conversion factors are 1 kg/m³ = 1.6856 lb/yd³ and 1 fl oz/cwt = 65.2 mL/100 kg.