---
product_id: 79491172
title: "High Performance Concrete Admixture 20 lbs"
brand: "kalmatron"
price: "£100.96"
currency: GBP
in_stock: true
reviews_count: 1
url: https://www.desertcart.co.uk/products/79491172-high-performance-concrete-admixture-20-lbs
store_origin: GB
region: United Kingdom
---

# Improves workability Reduces shrinkage by 3x High density concrete High Performance Concrete Admixture 20 lbs

**Brand:** kalmatron
**Price:** £100.96
**Availability:** ✅ In Stock

## Summary

> 🏗️ Build Better, Build Smarter!

## Quick Answers

- **What is this?** High Performance Concrete Admixture 20 lbs by kalmatron
- **How much does it cost?** £100.96 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/79491172-high-performance-concrete-admixture-20-lbs)

## Best For

- kalmatron enthusiasts

## Why This Product

- Trusted kalmatron brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy to Use:** Designed for seamless integration into your mix, enhancing workability and performance.
- • **Durability Boost:** Craft concrete that’s not just strong, but built to last with high density and resilience.
- • **Cement Efficiency:** Use less cement without compromising quality, making your projects more cost-effective.
- • **Efflorescence-Free:** Say goodbye to unsightly cracks and efflorescence—your surfaces will look pristine.
- • **Shrinkage Reduction:** Experience up to 3 times less shrinkage, ensuring your projects stand the test of time.

## Overview

The Kalmatron High Performance Concrete Admixture is a 20 lb powder designed to enhance concrete quality by reducing shrinkage, improving workability, and ensuring durability. This admixture is perfect for professionals seeking to create high-density, crack-free concrete with less cement.

## Description

Kalmatron KF-A is a powder admixture to concrete, available in gray and bright white colors. KF-A offers great batch workability. No shrinkage cracks - ever. Waterproof, corrosion resistant, KF-A concrete has a signature smooth flow, the "creamy effect" and a dense, beautiful look like natural stone. Application instructions and mix designs for casting, plaster and floor mixes are included with the product. Initial setting time: 4-6 hours, final hardening time: 12 hours. Great for sculptures, countertops, floors and shotcrete and stucco applications. Food and water safe. Simply strew the dry powder KF-A into the batch as it is mixing and mix for 5-7 minutes.

Review: Good product - Well packaged and arrived on time. It reduces slump while making the mix more workable. Will keep using this in my countertop projects.

## Features

- 20 LB. BAG - High Performance Admixture for Concrete - gray color
- Reduces shrinkage up to 3 times
- No shrinkage cracks, efflo or slab curling
- Improves batch workability, needs less cement
- Produces a high density, durable concrete

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Kalmatron |
| Part Number | Kalmatron KF-A Admixture (powder) |
| Item Weight | 20 pounds |
| Product Dimensions | 9 x 6 x 6 inches |
| Item model number | Kalmatron KF-A Admixture (powder) |
| Is Discontinued By Manufacturer | No |
| Color | Gray |
| Finish | Powder |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![High Performance Concrete Admixture 20 lbs - Image 1](https://m.media-amazon.com/images/I/61qhH0j5czL.jpg)
![High Performance Concrete Admixture 20 lbs - Image 2](https://m.media-amazon.com/images/I/51o6JJZUzVL.jpg)
![High Performance Concrete Admixture 20 lbs - Image 3](https://m.media-amazon.com/images/I/51TnHapxp6L.jpg)
![High Performance Concrete Admixture 20 lbs - Image 4](https://m.media-amazon.com/images/I/51Vg0UYfc4L.jpg)
![High Performance Concrete Admixture 20 lbs - Image 5](https://m.media-amazon.com/images/I/51KkIN97ltL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by H***R on June 3, 2019*

Well packaged and arrived on time. It reduces slump while making the mix more workable. Will keep using this in my countertop projects.

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-17*