- 799 - SECTION 1012 -- LIQUID MEMBRANE-FORMING COMPOUNDS FOR CURING CONCRETE
1012.01 Description
1.Liquid membrane-forming compounds are intended for application to concrete surfaces to reduce the loss of water during the early-hardening period. White-pigmented compounds serve the additional purpose of reducing the temperature rise in concrete exposed to radiation from the sun.
1012.02 Material Characteristics
1.Liquid membrane-forming compounds shall conform to the requirements of AASHTO M 148, Type 2.
1012.03 Acceptance Requirements
1.All curing compounds to be approved must be manufactured during the current calendar year with no ca rry-over from the previous years.
2.Approved compounds are on t he Department’s Approved Products List.
3.Products not on the Department’s Approved Products List shall be sampled and tested in accordance with requirements of the Department’s Materials Sampling Guide prior to their use. - 800 - SECTION 1013 -- BITUMINOUS LIQUID COMPOUNDS FOR CURING CONCRETE
1013.01 Description
1.The compound shall consist of an asphaltic base and shall be of a consistency suitable for spraying at tem peratures existing at the time of construction operations. It shall be applied to form a continuous, uniform film. It shall be free of precipitated matter caused by conditions of storage or temperature. The compound shall be relatively nontoxic.
1013.02 Material Characteristics
1.When tested in accordance with AASHTO T 155, the loss of water shall not be more than 0.11 lb/ft² (0.55 kg/m2) of surface area at 3 days, unless otherwise specified by the Engineer.
1013.03 Acceptance Requirements
1.The base material shall confor m to Sections 1030, 1031 and 1032.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 833–833 of 1,048.