In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
ACI World Headquarters
38800 Country Club Dr.
Farmington Hills, MI
ACI Middle East Regional Office
Second Floor, Office #207
The Offices 2 Building, One Central
Dubai World Trade Center Complex
Phone: +971.4.516.3208 & 3209
ACI Resource Center
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Showing 1-5 of 10 Abstracts search results
June 1, 2009
F.H. Fouad, J. Farrell, M. Heath, A. Shalaby, and A. Vichare
The housing industry is a critical component of the American economy representing about 4% of the economic activity of the nation. Light weight structural insulated panels (SIP) for walls and roofs are gaining wide acceptance in the construction industry because of the advantages they offer.
Energy savings, sound abatement, disaster resistance and durability are just a few of the benefits of buildings constructed with SIP. A variation of these panels is a structural concrete insulated panel (SCIP), commercially referred to as the MetRock (MR) Panel system. The aim of this paper was to study
the flexural behavior of the SCIP system and discuss the manufacturing and construction aspects of the SCIP system. An analytical method for estimating the panel’s flexural strength was developed and a step-by-step design procedure is provided to predict the load carrying capacity of the panels
and provide the engineer with a reliable tool for designing the panels. An experimental program was conducted and the results were compared to the analytical method for different size panels. The test results were in close agreement with the estimated values thus verifying the validity of the analytical
H. Ball Jr.
Typical demolding times of GFRC cast parts are typically 16 hours. This has limited the acceptance of GFRC, or any cement based product, into products requiring high volume production because of the high costs of multiple molds associated with a material chemistry with such long demolding times. This paper discusses a unique system utilizing Portland Type I cement, a fast setting
cement and specially designed mixing equipment to process the material so that demolding times in the 1 to 2 hour range are possible. A conventional weight formula (128 pcf or 2048 kg/m3 ) and a lightweight formula (71 pcf or 1136 kg/m3) are available. For convenience, the formulas are supplied
A. Fam and Y. Qasrawi
This paper presents an analytical model developed to predict the flexural response of a novel thin-walled pole comprising centrifugally cast concrete into a glass fiber reinforced polymer (GFRP) circular tube. The tube acts as a permanent form and at the same time is effectively considered as reinforcement for the pole by means of layers of fibers oriented in the longitudinal and circumferential directions. The model combines cracked-section analysis, the classical lamination theory of composites and non-linear extended strain softening concrete models, through a layer-bylayer
approach to account for the inherent complex geometry of the section. The model was verified using experimental results and showed good agreement. It was then used in a parametric study to establish the optimum concrete wall thickness for FRP tubes of different proportions of fibers in the longitudinal and circumferential directions as well as tubes of different wall thicknesses. It was
shown that the optimum concrete wall thickness is highly dependent on the FRP tube composition. It increases as the fraction of longitudinal fibers increases, or as the wall thickness of the tube increases.
K.G. Kuder and S.P. Shah
The design versatility of cement-based composites continues to make them attractive for a variety of specialized applications. Advanced processing techniques, including the Hatschek process, extrusion, self-consolidating concrete and slipform-cast concrete paving, offer great promise for improving innovation in the modern construction world. However, to advance the state-of-theart of cement-based products, the fresh state characteristics of these materials need to be well understood. Processing has a significant impact on composite performance, affecting fresh and hardened state properties as well as overall cost. In spite of its importance, relatively little is known about the relationship between processing and composite performance. Recent work at the Center for Advanced Cement-Based Materials (ACBM), headquartered at Northwestern University, has focused on developing a better understanding of this critical relationship. The role of processing on composite performance has been examined for a variety of advanced processing techniques, including the Hatschek process, extrusion, self consolidating concrete and slipform-cast concrete paving. The results indicate that overall composite performance can be enhanced by controlling fresh state properties. This paper presents a review of these studies and discusses ongoing research to link composite performance to microstructural changes.
X. Li and Z. Li
Thermal insulation and thermal energy storage are becoming more and more attractive for residential and industrial buildings due to the need of sustainable development. The economical and efficient technique that can be used to produce building products for insulation and store energy is also the subject of research for a long time. Cement-based products manufactured by extrusion
technique offer advantages in terms of the flexibility of section profiles, material performance enhancement and mass production mode. Different fillers can be used to achieve desired effects on thermal, mechanical and physical characteristics during extrusion process. These fillers include sand and expanded perlite which are good at thermal insulation and phase change composites which can provide high energy storage capacities. It is foreseeable that extruded building products with suitable fillers have potentiality for economical applications for thermal insulation and thermal storage of different kinds of buildings.
Results Per Page
Please enter this 5 digit unlock code on the web page.