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International Concrete Abstracts Portal

Showing 1-3 of 3 Abstracts search results

Document: 

JL69-56

Date: 

October 1, 1972

Author(s):

ACI Committee 309

Publication:

Journal Proceedings

Volume:

69

Issue:

10

Abstract:

class="red">Note: This is a one page synopsis only. The full paper was published in the December 1971 Journal, pg. 893-932 (JL68-76).

Consolidation is the process of removing entrapped air from fresh concrete in the form. Several methods and techniques are available - the choice depending mainly on the workability of the mix, placing conditions, and degree of deaeration desired. Some form of vibration is usually employed. This recommended practice includes up-to-date information on the mechanism of consolidation, and gives recommendations on equipment characteristics and procedures for various classes of construction.

DOI:

10.14359/15230

Document: 

JL65-42

Date: 

August 1, 1968

Author(s):

ACI Committee 302

Publication:

Journal Proceedings

Volume:

65

Issue:

8

Abstract:

Quality of a concrete slab or floor is highly dependent on achieving a hard and durable surface which is plane and free of cracks. The properties that the surface has are determined by the quality of the concreting operations. Furthermore, timing of these concreting operations and finishing techniques is critical. Otherwise, undesirable changes occur at the wearing surface; these may lead to soft or dusting surfaces, permeable concrete, cracking, and poor durability. This recommended practice tells how to produce good quality floors and slabs for various classes of service, emphasizing such aspects of construction as site preparation, concreting materials, concrete mixture proportions, concreting, workmanship, and curing. Adequate supervision and inspection are required of all job operations including particularly those of finishing.

DOI:

10.14359/7497

Document: 

JL45-16

Date: 

December 1, 1948

Author(s):

E. W. Scripture, Jr., and C. H. Sakryd

Publication:

Journal Proceedings

Volume:

45

Issue:

12

Abstract:

An attempt has been made to determine the conditions under which concrete floors can be expected to give good service. Resistance to abrasion was determined on speciemens with and without metallic aggregate after exposure to typical reagents selected from the groups described by the Joint Committee as having corrosive effects of an intermediate nature between no attack and severe attack. On the basis of the experimental results the reagents in the Joint Committee report have been classified in relation to anticipated service of concrete floors.

DOI:

10.14359/12146

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