HMA pavements may be placed: 1) Over existing pavements, either HMA or concrete 2) On newly constructed aggregate or HMA base courses 3) For widening contracts, on a combination of existing pavement and a base course The existing surface is required to be compacted, stable, and free from
Applicable Base Polymer Properties. Metallocene catalysts have been developed to produce polyolefins with precisely tailored properties. The attributes of metallocene catalyzed polyolefin (mPO) in hot melt adhesives are summarized below. CHAPTER 630 FLEXIBLE PAVEMENT HMA 2020-3-20 · should only be placed over a HMA or concrete surface course and not on an aggregate base. Do not place conventional HMA over a new RHMA unless it is HMA-O. 631.4 Open Graded Friction Course (OGFC) OGFC; formerly known as open graded asphalt concrete (OGAC), is a non-structural wearing course placed primarily on asphalt pavement. Material Properties for Asphalt Mixtures
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HMA pavements may be placed: 1) Over existing pavements, either HMA or concrete 2) On newly constructed aggregate or HMA base courses 3) For widening contracts, on a combination of existing pavement and a base course The existing surface is required to be compacted, stable, and free from
Jun 10, 2020 · Bids must be presented to the Public Works Department, 950 W. Mall Square, Room 110, Alameda, California, under sealed cover, plainly marked on the outside, "2020 Pavement Management, Phase 39, HMA Overlays & Base Repair, P.W. No. 05-20-26”, not later than 2:00 p.m. on June 10, 2020. The Bid opening time is 2:01 p.m. A. Hot Mix Asphalt (HMA) Pavement B. Base Widening 1.02 DESCRIPTION OF WORK A. Includes the requirements for the construction of HMA surface, intermediate, and base courses placed upon a prepared subgrade, subbase, base, or pavement and HMA base widening. B. Comply with Iowa DOT Section 2303 for construction of HMA pavement and base widening, Nov 20, 2019 · Air, base and asphalt mat temperatures can be the key to successful compaction and building a reputation for laying down high-quality, long-lasting paving or patching job HMA pavements may be placed: 1) Over existing pavements, either HMA or concrete 2) On newly constructed aggregate or HMA base courses 3) For widening contracts, on a combination of existing pavement and a base course The existing surface is required to be compacted, stable, and free from A. HMA Base Crushing and Shaping. The Engineer will base payment for HMA Base Crushing and Shaping on plan quantity, in accordance with subsection 109.01.A, regardless of any variation in depth. The unit price for HMA Base Crushing and Shaping includes the cost of water to obtain the required density, and scarifying, crushing, grading, Section 2203. Hot Mix Asphalt Base 2203.01 DESCRIPTION. Construct an HMA base, as specified, upon a prepared or corrected subgrade or a previously constructed base or subbase. 2203.02 MATERIALS. Apply Article 2303.02. 2203.03 CONSTRUCTION. Construct HMA base to the dimensions shown in the contract documents and according to Section 2303. 6.03.12 HMA Base Course A. General B. Wedging C. Widening D. HMA Separation Course E. Minimum Cover Over HMA Course 6.03.13 Deleted 6.03.14 Small Tonnages of HMA 6.03.15 HMA Approaches and Auxiliary Lanes A. Guidelines for Use of HMA Approach Pay Item 6.03.16 HMA Curb A. Guideline for Use B. Curb Shapes C. Pay Items