Evaluation method of mortar consistency of cement stabilized macadam permeable base

Abstract

The invention relates to an evaluation method of the mortar consistency of a cement stabilized macadam permeable base, which belongs to the field of urban construction, and aims to solve the problems that the existing evaluation method of mortar consistency has strong subjectivity and difficult quantification. The method comprises the following steps that: step 1, a leakage test is carried out for the mixed material of the cement stabilized macadam permeable base to be measured; step2, the mixed material of the cement stabilized macadam permeable base after the leakage forms at least two test pieces; step 3, one or more forming test pieces are uniformly divided into an upper part and a lower part, the voidage of the test pieces at the upper part and the lower part is measured, and whether the voidage of the test pieces at the upper part and the lower part is less than 5 percent is calculated; and step 4, a 7d unconfined compressive strength test is carried out for the remaining forming test pieces, and whether the compressive strength of the remaining forming test pieces is between 4.8MPa and 5MPa is tested; and when the two conditions of the step 3 and the step 4 are simultaneously met, the consistency of cement mortar is judged to meet the standard.

Description

Technical field [0001] The invention relates to a method for evaluating the consistency of cement stabilized crushed stone drainage base mortar and belongs to the field of urban construction. Background technique [0002] In recent years, a large number of early damages have occurred during the use of roads, and water entering the pavement structure is one of the main reasons for these damages. In order to solve such problems, the internal drainage system of the road surface is used extensively. As the main form of the internal drainage system of the pavement, the application of the drainage base layer can extend the service life of the asphalt pavement by 30% and the service life of the cement pavement by 50%, saving a lot of road maintenance and maintenance costs. Since 1998, many test roads with drainage bases have been built in my country, and good results have been achieved. [0003] The drainage base material must have high strength, but also have enough voids to complete t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing evaluation method for mortar consistency is highly subjective and not easy to quantify, and provides an evaluation method for cement-stabilized crushed stone drainage base layer mortar consistency

Images