Construction of Cabuco-Indang diversion road using precast pavement as replacement for conventional road construction : a proposal / by Raymund B. Baradi and Jenielyn L. San Antonio.

Design Project (Bachelor of Science in Civil Engineering) Cavite State University.

Includes bibliographical references.

College of Engineering and Information Technology (CEIT)

Baradi, Raymund B. and San Antonio, Jenielyn L., Construction of Cabuco-Indang Diversion Road Using Precast Pavement as Replacement for Conventional Road Construction: A Proposal Undergraduate Design Project. Bachelor of Science in Civil Engineering. Cavite State University, Indang, Cavite. June 2022. Adviser: Engr. Roslyn P. Peña

This study aspired to utilize alternative ways of road construction, especially nowadays; the volume of traffic is rapidly increasing. Therefore, this study was conducted to produce a design Proposal of Precast Concrete Pavement to be used for the construction of Cabuco - Indang Diversion Road. The authors aimed to lessen the time of construction compared to conventional way of road construction. The general objective of this study was to be able to produce a proposal plan for the construction of Cabuco-Indang Diversion Road using precast concrete pavement. Specifically, the study aimed to determine the following: 1. To produce a design plan based on standard specifications available, 2. To make a comparative analysis between precast concrete pavement and conventional pavement in terms of costing and period of construction; and 3. To determine the advantages and disadvantages of precast concrete pavement In Precast Concrete Pavement, panel fabrication and base preparation can be done at the same time. Precast Concrete Pavement (PCP) has proven to be one of the most effective ways for repairing and replacing concrete pavement, as well as building new pavement, in high-traffic areas. The use of PCP allows for the rapid building of concrete pavement without compromising concrete quality. It is cost-effective because it can be constructed or assembled by a small group of workers using lifting equipment. Precast is prepared in a controlled casting environment, providing for more control over the mix, placement, and curing processes. This process is part of a modern building technology known as prefabricate construction. This study contains design of precast concrete pavement based on standards and data gathered by the researchers. The total length of the road considered was 3.27km including the bridge that was 900mm long and produced 3,180 pieces of panels. The researchers designed a 4.0m by 3.5m panel that help them to analyze the design of the panel itself. Based on the computation, the thickness of the panel was 215.90 millimeters, but the authors adapt 230mm since pavement thickness cannot be less than 230mm. The design panel was also reinforced with 12mm diameter steel bars spaced with 230mm both ways and with a 50mm thickness of concrete cover. Dowel bars and tie bars were also integrated since the design required both dowel bars and tie bars. The cost and estimate were done for the panels and side forms, material cost and manpower cost were also included. The cost of each panel was 41, 259.78 pesos, therefore for 3, 180 pieces of panels the total cost was 119, 190, 454.25 pesos. The side forms costs 891, 812.16 pesos, this includes manpower cost and repair cost of the side forms after 100 usages. Compared to conventional way of road construction, precast panels were more costly because of the equipment used for precast. The amount of precast panel is increased by almost 15% which is about 21 million pesos. But in the long run, the cost of the panels will reduce since the cost of the side forms will be deducted for the reason that the side forms can be used multiple times. The maintenance cost of the side forms may also be removed depends on how side forms was used. The period of construction in precast panels were evidently shorter than the conventional way of road construction clearly because the concreting and excavating can be done simultaneously since the fabrication of the panels was done in a different location. Standard specifications used to produce the panel were based on the DPWH Standard Specification for Highway, Bridges, and Airports, Volume II Revised 2013. The researchers also adapted some of the American Standard for precast pavement.

Submitted to the University Library 07/11/2022 DP-759