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 # 02.01/07
The Offices 02 Building, One Central
Dubai World Trade Center Complex
Phone: +971.4.516.3208 & 3209
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.
Title: Thermal Conductivity of Pervious Concrete for Various Porosities
Author(s): Somayeh Nassiri and Benjamin Nantasai
Publication: Materials Journal
Appears on pages(s): 265-271
Keywords: heat transfer; pervious concrete; porosity, thermal conductivity
Abstract:Thermal conductivity (K) of pervious concrete specimens was measured using the heat-flow meter and the thermal needle probe methods. The two test methods were first conducted on 285.75 mm (11.25 in.) dry square slabs with varying porosities (φ) from 19 to 36%. Strong linear K-φ relationships were obtained based on both methods. On average, K for the slabs was 0.50 W/(mK) using the heat-flow meter, and 0.62 W/(mK) by the needle probe. Using the needle probe, 4% water in the slabs resulted in a 20% increase in K. One-hundred millimeter (4 in.) diameter cylinders were saw cut in half and were tested for K at the top and bottom. K-φ were obtained for the cylinder halves using the needle probe. The mean geometric model showed a near-perfect fit for the slabs in dry conditions. The model fit reasonably well to the top cylinders’ K and overestimated K for bottom cylinders with a mean square error of 0.012 W/(mK).
Click here to become an online Journal subscriber
Please enter this 5 digit unlock code on the web page.