Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

5 Questions

6 Views

Admixtures in Concrete

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

According to BS EN 934-2, an admixture is a material added during the mixing process of concrete in a quantity not more than ___% by mass of the cement content of the concrete?

10%

15%

5% (correct)

According to BS EN 934-2, admixtures for concrete must comply with which table of BS EN 934-1?

Table 3

Table 1 (correct)

Table 4

Table 2

Which of the following is NOT considered an admixture for concrete according to BS EN 934-2?

Cement

Water

Fine and coarse aggregate

Aggregate (correct)

What is the purpose of a hardening accelerating admixture for concrete?

<p>To increase the rate of development of early strength</p> Signup and view all the answers

What is the purpose of a set accelerating admixture for concrete?

<p>To decrease the setting time</p> Signup and view all the answers

Study Notes

Admixtures for Concrete

An admixture is a material added during the mixing process of concrete in a quantity not more than 5% by mass of the cement content of the concrete.
Admixtures for concrete must comply with Table 1 of BS EN 934-1.
Water is NOT considered an admixture for concrete.
The purpose of a hardening accelerating admixture is to reduce the time required for the concrete to reach its desired strength.
The purpose of a set accelerating admixture is to reduce the time required for the concrete to set.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge on admixtures in concrete with this quiz! Learn about the different types of admixtures, their functions, and how they modify the properties of concrete in both fresh and hardened states. Find out if you're an expert on BS EN 934-2 (2009) standards for admixtures.