(4) Given the information below: • The mixing water content for the required concrete mix is 180 kg/m³; • A water to cement ratio used is 0.5; • Coarse aggregate has a dry-rodded bulk density of 1800 kg/m³, the dry bulk volume of rodded coarse aggregate per unit volume of concrete is 0.69, and the absorption of 0.5%. According to the ACI (American Concrete Institute) procedure for the concrete mix design, determine: (a) How much of cement (kg) is used for a cubic metre of this concrete? (b) How much of dry coarse aggregate (kg) is used for a cubic metre of this concrete? (c) How much of coarse aggregate (kg) on the basis of SSD (saturated surface dry) condition?

(4) Given the information below: • The mixing water content for the required concrete mix is 180 kg/m³; • A water to cement ratio used is 0.5; • Coarse aggregate has a dry-rodded bulk density of 1800 kg/m³, the dry bulk volume of rodded coarse aggregate per unit volume of concrete is 0.69, and the absorption of 0.5%. According to the ACI (American Concrete Institute) procedure for the concrete mix design, determine: (a) How much of cement (kg) is used for a cubic metre of this concrete? (b) How much of dry coarse aggregate (kg) is used for a cubic metre of this concrete? (c) How much of coarse aggregate (kg) on the basis of SSD (saturated surface dry) condition?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Pricing Concrete Work

The concrete work in a project usually holds a high-end cost in terms of cost and value of the work. It becomes an important step in calculating the cost associated with concrete while preparing the project scale. The cost of making concrete depends on the cost of building materials, mixed materials, labor, and machinery. A concrete contractor builds structures from concrete, usually managing all the steps of the process from assembling ingredients to building a holding structure and preparing the mixture. This person or team oversees the delivery and unloading of goods to ensure that they are done properly. Nowadays, most of the concrete in the United States comes from manufacturers working abroad, usually with branches and plants within the provinces. Contributions can range from pre-mixed concrete to basic ingredients, the consumer company then mixes it. Many American-based concrete companies, however, offer concrete products, such as ballads, bricks, countertop, concrete pipe, and building products, as well as concrete construction and installation materials. This article covers both types of suppliers for this set of building materials.

Question

(4) Given the information below:
• The mixing water content for the required concrete mix is 180 kg/m3;
• A water to cement ratio used is 0.5;
• Coarse aggregate has a dry-rodded bulk density of 1800 kg/m³, the dry bulk
volume of rodded coarse aggregate per unit volume of concrete is 0.69, and
the absorption of 0.5%.
According to the ACI (American Concrete Institute) procedure for the concrete mix
design, determine:
(a) How much of cement (kg) is used for a cubic metre of this concrete?
(b) How much of dry coarse aggregate (kg) is used for a cubic metre of this
concrete?
(c) How much of coarse aggregate (kg) on the basis of SSD (saturated surface
dry) condition?

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