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Non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as exciting agent, and preparation method of non-steam autoclaved high performance concrete tube pile

A technology of high-performance concrete and calcium silicate hydrate, which is applied in the direction of manufacturing tools, reinforced molding, ceramic molding machines, etc., can solve problems such as ineffective effects, achieve shortened production cycle, high strength in the later stage, good economic benefits and The effect of social benefits

Inactive Publication Date: 2016-07-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods have achieved certain results, the effect is not very obvious.

Method used

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  • Non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as exciting agent, and preparation method of non-steam autoclaved high performance concrete tube pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1, a pressure-free steamed high-performance concrete pipe pile using calcium silicate hydrate seed powder as an activator, selects the bottom mold of a circular steel mold, and puts it into a pre-programmed steel cage; according to 42.5 grades Ordinary Portland cement 100, slag powder 25, calcium silicate hydrate seed powder 2, river sand 120, stone 225, water reducing agent 1.5, defoamer 0.05 weight ratio to weigh the material, according to 26% of the amount of cement Add water and stir for about 60s; add the stirred concrete into the above mold for centrifugal molding; stop for 3 hours after molding, and then perform normal pressure steam curing, the curing temperature is 90°C, and the steam curing time is 8 hours; use and obtain simultaneously with pipe piles The strength of the concrete specimens is tested, and the strength of the specimens is shown in Table 1. The strength of the specimens has reached C80, which means that the strength of the concrete pipe p...

Embodiment 2

[0047]Embodiment 2, a pressure-free steamed high-performance concrete pipe pile using calcium silicate hydrate seed powder as an activator, selects the bottom mold of a circular steel mold, and puts it into a pre-woven steel cage; according to 42.5 grades Ordinary Portland cement 100, slag powder 30, hydrated calcium silicate seed crystal powder 8, river sand 130, stone 215, water reducing agent 2.0, defoamer 0.20 Weigh the material by weight, according to 27% of the cement dosage Add water and stir for about 60s; add the stirred concrete into the above mold for centrifugal molding; stop for 3 hours after molding, and then perform normal pressure steam curing, the curing temperature is 90°C, and the steam curing time is 8 hours; use and obtain simultaneously with pipe piles The strength of the concrete specimens is tested, and the strength of the specimens is shown in Table 1. The strength of the specimens has reached C80, which means that the strength of the concrete pipe pile...

Embodiment 3

[0048] Embodiment 3, a pressure-free steamed high-performance concrete pipe pile using calcium silicate hydrate seed powder as an activator, selects the bottom mold of a circular steel mold, and puts it into a pre-woven steel cage; according to 42.5 grades Ordinary Portland cement 100, slag powder 40, calcium silicate hydrate seed powder 12, river sand 145, stone 200, water reducing agent 2.5, defoamer 0.50 weight ratio to weigh materials, according to 28% of cement consumption Add water and stir for about 60s; add the stirred concrete into the above mold for centrifugal molding; stop for 3 hours after molding, and then perform normal pressure steam curing, the curing temperature is 90°C, and the steam curing time is 8 hours; use and obtain simultaneously with pipe piles The strength of the concrete specimens is tested, and the strength of the specimens is shown in Table 1. The strength of the specimens has reached C80, which means that the strength of the concrete pipe piles h...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as an exciting agent, and a preparation method of the non-steam autoclaved high performance concrete tube pile. The concrete tube pile is prepared from ordinary Portland cement, mineral additives, the calcium silicate hydrate seed powder, sand, stones, a water reducing agent and an antifoaming agent. According to the non-steam autoclaved high performance concrete tube pile and the preparation method thereof disclosed by the invention, the calcium silicate hydrate seed powder is used as the exciting agent, so that a nucleation potential barrier of cement hydration can be reduced, besides, preferential adsorption nucleation is performed on reactant ions, the cement hydration is promoted, the pozzolanic effect of the mineral additives can also be advanced, the early strength of the concrete is improved from many aspects, and the non-steam autoclaved purpose is realized. According to the non-steam autoclaved high performance concrete tube pile and the preparation method thereof disclosed by the invention, the defects of low early strength, complex production technology, high energy consumption and the like of a conventional high performance concrete tube pile can be overcome, the equipment purchase cost and the equipment maintenance cost can also be reduced, and good economic and social benefits can be achieved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a non-pressure steamed high-performance concrete pipe pile using hydrated calcium silicate seed crystal powder as an activator and a preparation method thereof. Background technique [0002] Prestressed high-performance concrete pipe pile (PHC pipe pile for short) is a new type of concrete product developed in the past 30 years. It is an important pile foundation material and is widely used in high-rise buildings, long-span bridges, expressways and ports. Foundation works such as docks. Compared with other pile foundation materials, concrete pipe piles can not only shorten the construction period, but also have the advantages of simple manufacturing process, easy quality assurance, convenient pile planting, good driving resistance, cheap cost, fast construction speed, and good seismic performance of pile foundations. . [0003] In the past few decades, co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B22/08B28B21/56B28B21/92
CPCC04B28/04B28B21/56B28B21/92C04B2111/343C04B2201/52
Inventor 孙振平杨旭冀言亮蒋晓星胡匡艺
Owner TONGJI UNIV
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