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AbouRizk, S and Shi, J (1994) Automated Construction‐Simulation Optimization. Journal of Construction Engineering and Management, 120(02), 374–85.

AbouRizk, S M, Halpin, D W and Wilson, J R (1994) Fitting Beta Distributions Based on Sample Data. Journal of Construction Engineering and Management, 120(02), 288–305.

Bai, Y and Amirkhanian, S N (1994) Knowledge‐Based Expert System for Concrete Mix Design. Journal of Construction Engineering and Management, 120(02), 357–73.

  • Type: Journal Article
  • Keywords: Expert systems; Concrete; Mixtures; Mixing; Admixtures;
  • ISBN/ISSN: 0733-9364
  • URL: https://doi.org/10.1061/(ASCE)0733-9364(1994)120:2(357)
  • Abstract:
    In the United States, the American Concrete Institute method (ACI 211) is the most widely used concrete mix design. However, ACI 211 does not consider all factors regarding concrete mix design. The acceptance of a freshly mixed concrete depends on concrete quality control test results. If the results indicate that the concrete does not meet the specification, mix design adjustment must be made. Concrete mix design and adjustment are somewhat complicated and time‐consuming tasks that are performed best by experienced persons. In this project, a rule‐based expert system was developed to assist the user in concrete mix design, including the necessary adjustments to the design. The expert system can handle mix designs for normal‐weight concrete, normal‐weight‐mass concrete, normal‐weight no‐slump concrete, heavyweight concrete, and lightweight concrete. Besides workability, consistency, strength, durability, and density, the expert system considers other criteria such as admixtures, transportation, and air temperature that affect the concrete mix design. The system was tested on three projects. The system's selection of concrete proportions compared favorably with the experts' selections.

Everett, J G and Slocum, A H (1994) Automation and Robotics Opportunities: Construction versus Manufacturing. Journal of Construction Engineering and Management, 120(02), 443–52.

Farid, F and Koning, T L (1994) Simulation Verifies Queuing Program for Selecting Loader‐Truck Fleets. Journal of Construction Engineering and Management, 120(02), 386–404.

Furuya, N, Yamaoka, R and Paulson, B C (1994) Construction of Akashi‐Kaikyo Bridge West Anchorage. Journal of Construction Engineering and Management, 120(02), 337–56.

Hinze, J and Tracey, A (1994) The Contractor‐Subcontractor Relationship: The Subcontractor's View. Journal of Construction Engineering and Management, 120(02), 274–87.

Ndekugri, I and Turner, A (1994) Building Procurement by Design and Build Approach. Journal of Construction Engineering and Management, 120(02), 243–56.

Nishigaki, S, Vavrin, J, Kano, N, Haga, T, Kunz, J C and Law, K (1994) Humanware, Human Error, and Hiyari‐Hat: A Template of Unsafe Symptoms. Journal of Construction Engineering and Management, 120(02), 421–42.

Pin, T H and Scott, W F (1994) Bidding Model for Refurbishment Work. Journal of Construction Engineering and Management, 120(02), 257–73.

Severson, G D, Russell, J S and Jaselskis, E J (1994) Predicting Contract Surety Bond Claims Using Contractor Financial Data. Journal of Construction Engineering and Management, 120(02), 405–20.

Thomas, H R, Smith, G R and Mellott, R E (1994) Interpretation of Construction Contracts. Journal of Construction Engineering and Management, 120(02), 321–36.

Williams, T P (1994) Predicting Changes in Construction Cost Indexes Using Neural Networks. Journal of Construction Engineering and Management, 120(02), 306–20.