Modified stabilization-enhanced cement mixture for road, and preparation method of modified stabilization-enhanced cement mixture

Abstract

The invention discloses a modified stabilization-enhanced cement mixture for road, and a preparation method of the modified stabilization-enhanced cement mixture, aiming at solving the technical problems of serious shrinkage cracking and poor durability of a base course of pavement in the prior art. The modified stabilization-enhanced cement mixture is prepared from the following raw materials inparts: 15-35 parts of waste brick coarse aggregates, 30-50 parts of gravel coarse aggregates, 10-17 parts of waste brick fine aggregates, 22-30 parts of gravel fine aggregates, 3-7 parts of cement, 0.2-1.2 parts of rubber particles, 0.5-1.2 parts of steel fibers and 0.1-0.5 part of an improving agent; the method comprises the steps of: mixing the cement and the improving agent to obtain a composite modified cementing material; mixing the rubber particles and the steel fibers with the graded waste brick coarse aggregates, the gravel coarse aggregates, the waste brick fine aggregates and the gravel fine aggregates, and adding the obtained composite modified cementing material into a mixture to obtain the modified stabilization-enhanced cement mixture. The modified stabilization-enhanced cement mixture for road is environmentally friendly, low in cost, excellent in pavement performance, has excellent compressive strength, crack resistance and durability, and has good economic and social benefits.

Description

Technical field [0001] The invention relates to the technical field of road engineering materials, in particular to a modified and stabilized road cement mixture and a preparation method thereof. Background technique [0002] In the prior art, the concrete pavement is made of cement and stone as the main raw materials, processed, pressurized or fired to make various shapes of paving products, which are mainly used in urban roads, blocks and slabs of ground engineering. The above-mentioned pavement paving products need to consume a lot of stone as raw materials. [0003] With the rapid development of road engineering construction, a large amount of stone mining is required. However, the stone resources available for production in our country are limited and unevenly distributed. The cost of mining stone is high and the problem of resource shortage is becoming more and more prominent. It will destroy the ecological environment and cause pollution to the environment, which does not m...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a modified and stabilized road cement mixture, and provide its preparation method, in order to ensure the road performance of the cement-stabilized waste brick mixture, and solve the problem of road base in the prior art. The technical problems of severe shrinkage cracking and poor durability

[0009] After a long period of scientific practice and experimental research, the inventor selected waste clay bricks as the substitute aggregate, and through comprehensive treatment measures such as modification and stabilization, the high crushing value, many voids and poor durability of waste clay bricks were overcome. As a result, the cement-stabilized waste brick mixture can only be used on low-grade roads and cannot be used on a large scale; it has overcome the shrinkage cracks after completion and operation, and the shortened service life of the road has led to the road entering the overhaul or renovation period ahead of time, causing a large number of technical problems of economic loss