Concrete curb prepared from ardealite-based hydraulic composite cementing material and preparation method of concrete curb

A technology of composite cementitious material and phosphogypsum, applied in the field of building materials, can solve problems such as unsuitability for use, and achieve the effects of saving natural resources, excellent mechanical properties and durability, and quick and convenient molding

Inactive Publication Date: 2017-05-31
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among all activated alkalis, water glass (liquid sodium silicate) is the most effective, because water glass is a liquid, but others are not suitable for use in cement plant production

Method used

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  • Concrete curb prepared from ardealite-based hydraulic composite cementing material and preparation method of concrete curb

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1, a concrete curb prepared by using phosphogypsum-based hydraulic composite cementitious material, according to S95 blast furnace slag powder 100, phosphogypsum 25, cement 5, limestone 2.2, anhydrous gypsum 3.5, Na 2 SO 4 1.5, water reducer 1.89, metakaolin 1.1, CaF 2 0.01, the mass ratio of gravel 448, sand 186 is weighed and then mechanically stirred and mixed evenly. Add tap water accounting for 6% of the total weight of raw materials, mechanically stir for 3 minutes, pour into a special mold, and mechanically vibrate for 2 minutes, at 50 o Steam curing at C temperature for 20 hours, demoulding to get the desired product. The performance test results are shown in Table 1.

Embodiment 2

[0048] Example 2, a concrete curb prepared by using phosphogypsum-based hydraulic composite cementitious material, according to S95 blast furnace slag powder 100, phosphogypsum 27.4, cement 6, limestone 2.7, anhydrous gypsum 4, Na 2 SO 4 2.5, water reducer 1.91, metakaolin 1.5, CaF 2 0.02, the mass ratio of gravel 454, sand 189 is weighed and then mechanically stirred and mixed evenly. Add tap water accounting for 8% of the total weight of the raw materials, mechanically stir for 4 minutes, pour into a special mold, and mechanically vibrate for 5 minutes. o Steam curing at C temperature for 25 hours, demoulding to get the desired product. The performance test results are shown in Table 1.

Embodiment 3

[0049] Example 3, a concrete curb prepared by using phosphogypsum-based hydraulic composite cementitious material, according to S105 blast furnace slag powder 100, phosphogypsum 41.6, cement 9, limestone 3.9, anhydrous gypsum 8, Na 2 SO 4 3.2, water reducing agent 2.26, metakaolin 2.1, CaF 2 The mass ratio of 0.04, stone 537, and sand 223 was weighed and then mechanically stirred and mixed evenly. Add tap water accounting for 7% of the total weight of raw materials, mechanically stir for 5 minutes, pour into a special mold, and mechanically vibrate for 4 minutes, at 70 o Steam curing at C temperature for 20 hours, demoulding to get the desired product. The performance test results are shown in Table 1.

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Abstract

The invention belongs to the technical field of building materials and particularly relates to concrete curb prepared from an ardealite-based hydraulic composite cementing material and a preparation method of the concrete curb. The concrete curb is prepared from blast furnace slag, ardealite, cement, limestone, anhydrite, Na2SO4, a water reducing agent, metakaolin, CaF2, stone and sand. Physical and mechanical properties and durability of common plastic concrete can be improved, quick and convenient forming is realized, natural resources and maintenance and replacement costs are saved, and environmental pollution is reduced. The concrete curb is applicable to the fields of highway engineering and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete curb prepared with phosphogypsum-based hydraulic composite cementitious material and a preparation method thereof. Background technique [0002] Concrete curbstone is an indispensable auxiliary material in road engineering, and its usage is increasing day by day. In 2011, my country added 11,000 kilometers of expressways. By the end of 2011, the total mileage of expressways in my country reached 85,000 kilometers. In 2012, the total mileage of expressways in my country reached 96,200 kilometers. my country's "Thirteenth Five-Year Plan" period is the period when my country's highway transportation has the fastest development speed, the best development quality, and the most significant improvement in service levels. In addition, in addition to the need to use curbs on both sides of the road, curb stones are also widely used in closed or semi-cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14E01C11/22
CPCC04B28/143C04B2201/50E01C11/221C04B18/141C04B7/02C04B22/143C04B22/10C04B22/147C04B2103/302C04B22/08C04B22/126C04B14/02C04B14/068C04B40/024
Inventor 孙振平张世杰杨旭冀言亮蒋晓星唐晓博
Owner TONGJI UNIV
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