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The Experimental Research on Crumb Rubber High-performance Self-compaction Grouting Materialing Material at Subzero Temperature

Author: LinRui
Tutor: ZhuHan
School: Tianjin University
Course: Architecture and Civil Engineering
Keywords: Rubber Aggregate Grouting material Compressive strength Negative temperature curing Volume stability Wear resistance
CLC: TU528
Type: Master's thesis
Year: 2010
Downloads: 55
Quote: 0
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Abstract


High-performance vibration-free grouting material in the reinforced concrete structure reinforcement and equipment installation extensive use of building materials . Gravity , rapid hardening , early strength , high strength ; non-toxic , harmless, non-aging , water quality and the surrounding environment pollution , since the density is good , rust, etc.; reliable quality in construction , reduce costs, shorten the duration and ease of use . However , this type of construction materials in the negative temperature curing conditions of rapid hardening early strength is not obvious , Based on the understanding of crumb rubber concrete frost resistance , to join in the grouting compound rubber aggregate preparation of rubber aggregate performance Free vibrators grouting material , research crumb rubber material high - performance vibration-free grouting material in different negative temperature conditions early and late flexural , compressive strength, volume stability and wear resistance . The main conclusions are as follows : (1) preparation of crumb rubber material high - performance vibration-free grout out machine fluidity ≥ 240mm, 30 minutes after the flow of ≥ 220mm ; natural curing conditions : 1d of 5 to 20 MPa compressive strength , 3d the compressive strength of 20 to 35MPa , 28d compressive strength of 40 to 50 MPa ; ( 2 ) the preparation of the rubber aggregate able to achieve high performance vibration-free grouting material -4 ° C environmental conservation conditions : 3d compressive strength set of rubber prepared than ( less intensity than are negative temperature environment and natural conditions, the intensity ratio ) ≥ 80 % , the 7D compressive strength ratio ≥ 90 % , the 28d of compressive strength ratio ≥ 95 % ; ( 3 ) material high-performance vibration-free grouting material in the -8 ° C environmental conservation conditions for 24 hours after the switch to natural curing conditions can be achieved : 3d compressive strength ( strength of the following indicators are negative temperature environment than the strength under natural conditions ) ≥ 75 % 7D compressive strength ratio ≥ 80 % , the 28d of compressive strength ratio ≥ 85 % ; ( 4 ) the preparation of crumb rubber material high-performance vibration-free grouting material is able to reach -8 ° C environmental conservation conditions : 3d the compressive strength than (hereinafter indicators strength ratio of negative temperature environment under natural conditions, the intensity ratio ) ≥ 12 % , the 7D compressive strength ratio ≥ 20 % , 28d compressive strength of ≥ 60% ; (5) the preparation of the rubber aggregate high-performance vibration-free grouting material has good volume stability and wear resistance in the negative temperature curing conditions .

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CLC: > Industrial Technology > Building Science > Building Materials > Non-metallic materials > Concrete and concrete products
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